Re: NSDateFormatter not working on iOS 5.
I will need to think about the best current workaround for this, but right now I am (and have been) swamped, sorry. I've tried the following code and it seems to work for me. Can you think of any reason why it might not work? As I understand from the unicode standard [1], V is supposed to prefer the metazone timezone abbreviation, which is what my users commonly expect (in America: EST, EDT, CST, CDT, MST, MDT, PST, PDT, etc; in India: IST). Thanks! NSLocale *indianEnglishLocale = [[[NSLocale alloc] initWithLocaleIdentifier:@en_IN] autorelease]; NSTimeZone *timeZone = [NSTimeZone timeZoneWithName:@Asia/Kolkata]; NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease]; [dateFormatter setLocale:indianEnglishLocale]; [dateFormatter setDateFormat:@V]; // or @zzz [dateFormatter setTimeZone:timeZone]; NSLog(@V date string: %@, [dateFormatter stringFromDate:[NSDate date]]); [1] http://unicode.org/reports/tr35/tr35-10.html#Date_Format_Patterns -Heath Borders heath.bord...@gmail.com Twitter: heathborders http://heath-tech.blogspot.com On Mon, Feb 13, 2012 at 12:09 PM, Peter Edberg pedb...@apple.com wrote: On Feb 2, 2012, at 7:56 AM, John Joyce wrote: On Feb 2, 2012, at 2:20 AM, Peter Edberg wrote: On Jan 31, 2012, at 2:35 PM, cocoa-dev-requ...@lists.apple.com wrote: -- Message: 1 Date: Tue, 31 Jan 2012 14:10:13 -0600 From: Heath Borders heath.bord...@gmail.com To: cocoa-dev cocoa-dev@lists.apple.com Peter, If I set the locale to en_IN shouldn't that show the short time zone? NSLocale *indianEnglishLocale = [[[NSLocale alloc] initWithLocaleIdentifier:@en_IN] autorelease]; NSTimeZone *timeZone = [NSTimeZone timeZoneWithName:@Asia/Kolkata]; NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease]; dateFormatter.locale = indianEnglishLocale; dateFormatter.dateFormat = @z; dateFormatter.timeZone = timeZone; NSLog(@date string: %@, [dateFormatter stringFromDate:[NSDate date]]); NSLog(@time zone abbreviation: %@, [timeZone abbreviationForDate:[NSDate date]]); output: date string: GMT+05:30 time zone abbreviation: IST -Heath Borders Heath, Yes, you are correct, for the example you provided above, [dateFormatter stringFromDate:[NSDate date]] *should* use the short time zone name IST. The fact that it does not is due to a deficiency in the en_IN locale data in the versions of CLDR data used by ICU in the current OSX and iOS releases (CLDR 1.9.1 and 2.0 respectively). The en_IN locale in those CLDR versions did not override or supplement any of the timezone name data from the base en locale, whose default content is for en_US. This is already fixed for the CLDR 21 release coming in a few days. That is being incorporated into ICU 49 which will be picked up in future OSX and iOS releases. - Peter E Is there any recommended workaround approach for this kind of scenario until those updates are incorporated? More specifically, how would one best implement a workaround that would be easily overridden by (or not clash terribly) the fix when it is eventually incorporated into a release? Any best practices or recommendations in that area? I will need to think about the best current workaround for this, but right now I am (and have been) swamped, sorry. - Peter E ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/heath.borders%40gmail.com This email sent to heath.bord...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: issues using encodeWithCoder: with NSAttributedString for iOS
I don’t know of an easy workaround. Back in the day I would have suggested creating a category on CGColor that adds the required archiving methods, but doing this will get you rejected from the App Store. You may need to write a function that walks through a mutable attributed string and finds all color objects and replaces them with something serializable, and another function that reverses this. How do you create a category for a Foundation type that isn't an Objective-C class? And why would that get you rejected? Sent from my iPad On Feb 27, 2012, at 12:21 AM, Jens Alfke j...@mooseyard.com wrote: On Feb 26, 2012, at 9:44 PM, Michael Swan wrote: the thing that doesn't make any sense is that if NSAttributedString conforms to the NSCoding protocol it must be able to fully pack itself up when encodeWithCoder: is called on it which means that it should already be taking care of encoding the CGColor in whatever way necessary. Archiving doesn’t work that way. Every object asks its instance variables to archive themselves; it’s not in charge of how they do it. NSAttributedString is, basically, an array of dictionaries, each of which can have arbitrary values in it. NSAttributedString itself doesn’t know or care what those keys or values are. (Note that NSAttributedString is implemented in the Foundation framework, which is lower level than UIKit.) What you’re running into is that CGColor isn’t archivable — it doesn’t implement the protocol methods like -encodeWithCoder:. So the attributed string is asking the attribute dictionary to archive itself, and the dictionary asks its keys and values to archive themselves, and the CGColor object fails. I don’t know of an easy workaround. Back in the day I would have suggested creating a category on CGColor that adds the required archiving methods, but doing this will get you rejected from the App Store. You may need to write a function that walks through a mutable attributed string and finds all color objects and replaces them with something serializable, and another function that reverses this. —Jens ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/heath.borders%40gmail.com This email sent to heath.bord...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Stop developer tools access... and gdb-i386-apple-darwin... alerts
I recently upgraded to 10.7.3, and when I try to debug my iOS project in the simulator for the first time after logging in, I'm prompted with the following two alerts: Developer Tools Access needs to take control of another process for debugging to continue. Type your password to allow this. http://i.stack.imgur.com/GeKA8.png gdb-i386-apple-darwin needs to take control of another process for debugging to continue. Type your password to allow this. http://i.stack.imgur.com/sg9rv.png My user is an admin user. I never saw these alerts before. How do I get them to stop? -Heath Borders heath.bord...@gmail.com Twitter: heathborders http://heath-tech.blogspot.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
On iOS5 simulator and device, NSDateFormatter doesn't show time zone abbreviation for Asia/Kolkata for the z or zzz specifier.
On iOS5 simulator and device, NSDateFormatter doesn't show time zone abbreviation for Asia/Kolkata for the z or zzz specifier. NSTimeZone *timeZone = [NSTimeZone timeZoneWithName:@Asia/Kolkata]; NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease]; dateFormatter.dateFormat = @z; // or @zzz dateFormatter.timeZone = timeZone; NSLog(@date string: %@, [dateFormatter stringFromDate:[NSDate date]]); // GMT+05:30, expected IST NSLog(@time zone abbreviation: %@, [timeZone abbreviationForDate:[NSDate date]]); // IST I expect the above code to output IST IST but it outputs GMT+05:30 IST Is this a bug? Am I doing something wrong? People have mentioned that NSDateFormatter has bugs, especially when a time zone is specified in the format string. Could this be one of those bugs?[1] [1] http://stackoverflow.com/a/838934/9636 -Heath Borders heath.bord...@gmail.com Twitter: heathborders http://heath-tech.blogspot.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSDateFormatter not working on iOS 5.
Peter, If I set the locale to en_IN shouldn't that show the short time zone? NSLocale *indianEnglishLocale = [[[NSLocale alloc] initWithLocaleIdentifier:@en_IN] autorelease]; NSTimeZone *timeZone = [NSTimeZone timeZoneWithName:@Asia/Kolkata]; NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease]; dateFormatter.locale = indianEnglishLocale; dateFormatter.dateFormat = @z; dateFormatter.timeZone = timeZone; NSLog(@date string: %@, [dateFormatter stringFromDate:[NSDate date]]); NSLog(@time zone abbreviation: %@, [timeZone abbreviationForDate:[NSDate date]]); output: date string: GMT+05:30 time zone abbreviation: IST -Heath Borders heath.bord...@gmail.com Twitter: heathborders http://heath-tech.blogspot.com On Mon, Nov 21, 2011 at 1:54 AM, Peter Edberg pedb...@apple.com wrote: On Nov 17, 2011, at 10:14 AM, Matt Neuburg wrote: On Wed, 16 Nov 2011 14:43:55 -0800, Peter Edberg pedb...@apple.com said: ... The issue is this: With the *short* timezone formats as specified by z (=zzz) or v (=vvv), there can be a lot of ambiguity. For example, ET for Eastern Time could apply to different time zones in many different regions. To improve formatting and parsing reliability, the short forms are only used in a locale if the cu (commonly used) flag is set for the locale. Otherwise, only the long forms are used (for both formatting and parsing). For the en locale (= en_US), the cu flag is set for metazones such as Alaska, America_Central, America_Eastern, America_Mountain, America_Pacific, Atlantic, Hawaii_Aleutian, and GMT. It is *not* set for Europe_Central. However, for the en_GB locale, the cu flag *is* set for Europe_Central. So a formatter set for short timezone style z or zzz and locale en or en_US will not parse CEST or CET, but if the locale is instead set to en_GB it *will* parse those. The GMT style will be parsed by all. ... Thanks; I suspected that something like this might be the case. But the result, as I pointed out in my bug report (10447767), is that you can't round-trip the abbreviations that the system itself gives you: NSDictionary* d = (NSDictionary*)CFTimeZoneCopyAbbreviationDictionary(); for (NSString* aZone in d.keyEnumerator) NSLog(@%@ %@, aZone, [dateFormatter dateFromString: [NSString stringWithFormat:@2011-11-15 06:50:59.735 %@, aZone]]); These are *your* abbreviations (by you I mean the system) that aren't working. If they aren't going to work why are you giving them to me? Surely there should be some call that provides me with a list of *legal* abbreviations. m. Yes, there is a disconnect here. The dictionary returned by CFTimeZoneCopyAbbreviationDictionary (and by +[NSTImeZone abbreviationDictionary]) is a standard internal mapping that does not depend on locale and is not built from the abbreviations used by ICU, and always maps ambiguous zone abbreviations to a particular zone name (as noted in the documentation) regardless of locale. This is not particularly useful for your purposes. What would be more useful in this case is function that takes a locale parameter, and returns a dictionary of the abbreviation mappings that are meaningful in that locale. This would be built from the locale-specific abbreviations used by ICU. If you agree, please file an enhancement request. - Peter E ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/heath.borders%40gmail.com This email sent to heath.bord...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Why doesn't UIViewController retain its UISearchDisplayController
In the UIViewController documentation about the searchDisplayController property [1] it says: If you create your search display controller programmatically, this property is set automatically by the search display controller when it is initialized. And when I create my UISearchDisplayController thusly: [[[UISearchDisplayController alloc] initWithSearchBar:searchBar contentsController:self] autorelease]; -[UIViewController searchDisplayController] is not nil. However, it is nilled out after the event loop finishes, which causes the search display controller not to show when I touch inside the search bar. Nothing crashes. This is very weird. If I omit the call to autorelease, everything works: [[UISearchDisplayController alloc] initWithSearchBar:searchBar contentsController:self]; However, leaks the UISearchDisplayController (I verified this with Instruments). Since the searchDisplayController property is marked as (nonatomic, retain, readonly) I expect that it would retain the UISearchDisplayController after it is set. This stackoverflow article [2] is related. I cross-posted this question on stackoverflow. [3] [1] http://developer.apple.com/library/ios/#DOCUMENTATION/UIKit/Reference/UIViewController_Class/Reference/Reference.html#//apple_ref/occ/instp/UIViewController/searchDisplayController [2] http://stackoverflow.com/q/2395272/9636 [3] -Heath Borders heath.bord...@gmail.com Twitter: heathborders http://heath-tech.blogspot.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Managed Object Model versions
You specify a URL for the persistent store when you create it. Just find the store at that URL. -Heath On Sep 30, 2011 12:33 AM, Luke Sneeringer lukesneerin...@gmail.com wrote: Hey all, I am working on writing my first Core Data application. I made an entity, did some work to test it, and then made another (linked) entity. The problem is now I'm totally stuck, because when I try to do anything that affects Core Data, I get a completely unhelpful error message: The managed object model version used to open the persistent store is incompatible with the one that was used to create the persistent store. Well, I Googled this, and there's some discussion about making migrations. I don't want to do that. I just want to blow away the old data store -- get it out of the filesystem and have the application make a new one. However, I can't figure out how to do this. I found a blog entry suggesting that I look in ~/Library/Application Support/Application Name/, but my application doesn't seem to have made a folder in ~/Library/Application Support/ at all. So...how can I get rid of my old persistent store? It doesn't have to be programmatic -- in fact, I'd prefer it not be programmatic. I just want to wipe it off the disk. Help! Thanks, Luke Sneeringer___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/heath.borders%40gmail.com This email sent to heath.bord...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Calling -addObserver:forKeyPath:… more than once
You must call remove as many times as you call add. Otherwise, subclasses and superclasses would interfere with each other's observations. -Heath Borders heath.bord...@gmail.com Twitter: heathborders http://heath-tech.blogspot.com On Fri, Aug 26, 2011 at 4:34 AM, Rick Mann rm...@latencyzero.com wrote: Is -addObserver:forKeyPath:… idempotent? I called it multiple times with the same parameters, but called -removeObserver:forKeyPath: only once, and the object continued to receive KVO notifications. After adding code to ensure -addObserver:forKeyPath:… was only called once, -removeObserver:forKeyPath: seemed to work as expected. I couldn't find any clear indication in the docs or searching online, although I did find some things that indicate these APIs rather do suck. -- Rick ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/heath.borders%40gmail.com This email sent to heath.bord...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Sharing a persistent store between iOS and Mac
I've done something similar in two of my projects. However, I only shared the sqlite file, not the momd. I created a command-line build tool, and generated a sqlite coredata store with it. Then I copy the sqlite into my iOS project and add it to the Copy Bundle Resources phase. I do NOT copy the momd. I reference the same xcdatamodel file in both projects and each one builds its own copy. Perhaps the sqlite file is shareable but the momd is not? -Heath On Aug 25, 2011 3:31 PM, Fritz Anderson fri...@manoverboard.org wrote: iOS 4.3 Simulator, Xcode 4.1, Lion 10.7.1 I'm having trouble generating a Core Data store and opening it in an iOS app (in the Simulator so far). My iOS app has to initialize a large, read-only dataset — a 12,000-word vocabulary with definitions. In my early drafts, with 6000 words, I had it parse a text file, but that took alarmingly long, and the watchdog timer would probably kill it if I attempted the full dictionary. So if I'm initializing an SQLite Core Data store anyway, why not do so at build time, with a command-line tool on the Mac side? So I have two targets. They share one managed-object class and a data model. The builds for both compile the data model into a .momd. It's not the same momd, but VersionInfo.plist in both is identical. The command-line tool takes the .momd and the vocabulary text, and produces vocab.sqlite in SRCROOT. Using Navicat for SQLite Lite, I verified that the contents of the file are (as far as I can tell) what I expect. The iOS target copies vocab.sqlite as a resource. I verified (by eye and by an assertion in code) that it is in the .app bundle. I reviewed the build logs and verified that the .sqlite file came from the place to which the command-line tool wrote. I get The model used to open the store is incompatible with the one used to create the store when the iOS app tries to add vocab.sqlite to the persistent store coordinator. There is only one .momd in the .app bundle. The command-line tool takes a .momd as an argument; I've tried pointing it at the .momd inside the bundle; still incompatible. From everything I know to check, I'm doing this right. I've found nothing to suggest you can't put a Mac-generated store into an iOS app, and much to suggest that you should. I'm stymied. What should I try next? — F ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/heath.borders%40gmail.com This email sent to heath.bord...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Core Data Concurrency Issues
A managed object context needs to be used and created from the same thread.
Create and use childContext in a single dispatchAsync block.
-Heath
On Aug 4, 2011 5:32 PM, Jeff Kelley slauncha...@gmail.com wrote:
I’m having some issues with concurrency with Core Data. I create an object
that has a to-many relationship with another object (which in turn has a
to-one reciprocal relationship with the first object), then dispatch_async
onto a private queue. In that queue, I use a separate managed object
context, which I’ve created earlier and only use within that queue. Here’s
a
snippet:
ParentObject *parent = [NSEntityDescription
insertNewObjectForEntityName:@ParentObject]
inContext:[self moc]];
NSManagedObjectID *objectID = [parent objectID];
dispatch_async(dedicatedQueue, ^{
// Note: childContext is an NSManagedObjectContext that has been created
earlier and is only used within this queue.
ParentObject *parent = [childContext objectWithID:userID];
for (NSDictionary *jsonDict in allChildDicts) {
ChildObject *child = [NSEntityDescription
insertNewObjectForEntityName:@ChildObject]
inContext:childContext];
[parent addChildObject:child];
}
});
If I try to save the context within the dedicated queue, I get validation
errors on the child objects with the text “Dangling reference to an
invalid
object.”
It appears to work correctly if I create the parent object within the
dedicated child queue. So, what is the proper way to create these objects
on
the main queue and then update them in the background? Thanks in advance.
Jeff Kelley
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Re: MPMoviePlayerController Fast forward
You could do key-value observing on currentPlaybackRate.
http://developer.apple.com/library/ios/#documentation/mediaplayer/reference/MPMediaPlayback_protocol/Reference/Reference.html#//apple_ref/occ/intfp/MPMediaPlayback/currentPlaybackRate
-Heath Borders
heath.bord...@gmail.com
Twitter: heathborders
http://heath-tech.blogspot.com
On Thu, Jul 28, 2011 at 2:06 PM, Steve Kostrey st...@askvideo.com wrote:
I've implemented MPMoviePlayerController (iPhone/iPad) and I'm playing videos
without trouble but I'm not sure how to receive an event from the Fast
forward overlay button.
I've tried everything the documentation suggests about remote control but I'm
not sure that's the way.
I've tried the following code:
[[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
[self becomeFirstResponder];
- (BOOL)canBecomeFirstResponder {
return YES;
}
- (void)remoteControlReceivedWithEvent:(UIEvent *)event {
if( event.type == UIEventTypeRemoteControl ) {
NSLog(@sub type: %d, event.subtype);
}
}
Not sure where to place this (and when I place it in the header I get
redefinition errors):
typedef enum {
// available in iPhone OS 3.0
UIEventSubtypeNone = 0,
// for UIEventTypeMotion, available in iPhone OS 3.0
UIEventSubtypeMotionShake = 1,
// for UIEventTypeRemoteControl, available in iPhone OS 4.0
UIEventSubtypeRemoteControlPlay = 100,
UIEventSubtypeRemoteControlPause = 101,
UIEventSubtypeRemoteControlStop = 102,
UIEventSubtypeRemoteControlTogglePlayPause = 103,
UIEventSubtypeRemoteControlNextTrack = 104,
UIEventSubtypeRemoteControlPreviousTrack = 105,
UIEventSubtypeRemoteControlBeginSeekingBackward = 106,
UIEventSubtypeRemoteControlEndSeekingBackward = 107,
UIEventSubtypeRemoteControlBeginSeekingForward = 108,
UIEventSubtypeRemoteControlEndSeekingForward = 109,
} UIEventSubtype;
Bottom line is I would love to receive the FF event. Has anyone successfully
done this?
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ANN: HBCollections Blocks Categories
Objective-C categories for functional data structure traversal with blocks. The interface was inspired by Javascript Array Iteration Methods. The implementation was inspired by Mike Ash's Implementating Fast Enumeration Friday QA. https://github.com/hborders/HBCollections I encourage any feedback about ways to make this more efficient or any other convenience APIs or basic functional APIs I could add. Thanks! -Heath Borders heath.bord...@gmail.com Twitter: heathborders http://heath-tech.blogspot.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Why are these objects still faults?
Is your topic node self-referential? Maybe CoreData doesn't prefetch
circular references.
-Heath Borders
heath.bord...@gmail.com
Twitter: heathborders
http://heath-tech.blogspot.com
On Tue, Jul 19, 2011 at 12:21 AM, Gideon King gid...@novamind.com wrote:
Hi, I'm doing a fetch of some objects like this:
entity = [NSEntityDescription entityForName:kNMTopicNodeEntityKey
inManagedObjectContext:[self managedObjectContext]];
request = [[NSFetchRequest alloc] init];
[request setEntity:entity];
[request setRelationshipKeyPathsForPrefetching:[NSArray
arrayWithObjects:@topic,@view, nil]];
results = [[self managedObjectContext] executeFetchRequest:request
error:error];
if (results) {
log4Debug(@Loaded %d topic nodes, [results count])
}
[request release];
The log tells me id loaded my 2,000 topics.
Then later, I do the following:
// This is an array of topic nodes - the things that I have just fetched
NSArray *allTopics = [map.rootTopicNode allDescendantTopicNodesIncludingSelf];
NSSortDescriptor *sd = nil;
if (floor(NSAppKitVersionNumber) NSAppKitVersionNumber10_5) {
sd = [NSSortDescriptor sortDescriptorWithKey:@view.zIndex
ascending:YES];
} else {
sd = [[[NSSortDescriptor alloc] initWithKey:@view.zIndex
ascending:YES] autorelease];
}
for (NMTopicNodeMO *node in [allTopics sortedArrayUsingDescriptors:[NSArray
arrayWithObject:sd]]) {
Do stuff
}
But this was running really slowly, so I commented out the above couple of
lines, and did the following check:
for (NMTopicNodeMO *ttn in allTopics) {
if ([ttn isFault]) {
log4Debug(@Node is a fault);
}
if ([ttn.view isFault]) {
log4Debug(@View is fault);
}
}
...and it told me that the view was a fault for every topic node (but none of
the topic nodes were faults)!
But I told it to pre-fetch the view relationship. Any ideas why it wouldn't
work?
TIA
Gideon
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Re: Core Data search optimizations
I would use CLucene for this. It isn't as easy to use as CoreData (it is written in C++, so you'll need some Objective-C++ as a shim at a minimum), but it is powerful and VERY fast. -Heath From my iTouch4 On Jul 14, 2011, at 1:17 PM, Indragie Karunaratne cocoa...@indragie.com wrote: Hi guys, I'm working on a search feature in one of my Core Data based apps and I'm trying to gather everyone's tips on search optimization to get it as fast as I possibly can. The search needs to be fast enough that it can deliver near-instantaneous results for database of 20,000+ objects. What I've done so far (as far as optimization goes) - Implemented the technique shown in WWDC 2010 session 137, creating a keyword entity and creating a to-many relationship from my main object entities to it. The keyword entity's 'name' attribute is indexed, and keywords are created during the initial import procedure by splitting apart relevant strings in the main entities and normalizing them (stripped of case and diacritics) - Using = and binary comparators instead of BEGINSWITH, etc. My predicate format is: SUBQUERY(keywords, $keyword, ($keyword.name = $LB) AND ($keyword.name $UB)).@count != 0 Where $LB is the lower bounds string and $UB is upper bounds. I create a compound AND predicate using this format and the array of search terms. Right now, I'm executing a fetch once (when the user types the first letter) using a fetch batch size of about 20, and then narrowing down the search results using NSArray's -filteredArrayUsingPredicate method as they continue typing. I also prefetch the keywords relationship because this is used to filter. The part that takes up the most time, obviously, is the initial fetch. There's a noticeable delay of ~1-2s on a library of around 15,000 objects. Time profiling shows that it is indeed the fetch that is causing the delay: http://cl.ly/3a1b2022452M2V323f2H One other thing thats worth noting is that I have to fetch multiple entities for the results. All of the entities have a ranking attribute, but I can't fetch more than one at once so I'm forced to fetch them separately, combine them into a single array, and then sort manually via -sortedArrayUsingDescriptors. Any tips on how to speed this up would be greatly appreciated.___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/heath.borders%40gmail.com This email sent to heath.bord...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: iOS: AVFoundation, AVAssetWriter and caching
I'm pretty sure someone else on the list tried exactly that, and it didn't work. -Heath Borders heath.bord...@gmail.com Twitter: heathborders http://heath-tech.blogspot.com On Wed, Jul 6, 2011 at 11:40 AM, Steve Christensen puns...@mac.com wrote: With the caveat that I haven't actually tried it, would it make more sense to be streaming the movie data to a local file, then specifying the URL/path to the file in the initializer method of one of the movie player classes? If the player can handle the case where not all the movie data is present then it should just do the right thing. The benefit is that you can use the same code to play the movie, no matter how much of it is local. On Jul 5, 2011, at 8:03 PM, John Michael Zorko wrote: I'm interested in caching a movie as I play it from the internet, so that the next time the user asks for the movie, it can play it from the device filesystem. I'm thinking capturing frames and audio and using an AVAssetWriter like I would when recording from the camera, but i'm not sure if this will work when recording from a playing asset. Would anyone illuminate me as to whether this is possible, or if I need to explore other ways of doing this (which would probably be a lot less cool and efficient than doing it this way, alas)? ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/heath.borders%40gmail.com This email sent to heath.bord...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: [Q] Will the be any problem in implementing an NSArray method using fast enumeration?
You might also try HBCollections, a series of collections categories I wrote that makes it easy to do stuff like this. https://github.com/hborders/HBCollections -Heath On Jun 30, 2011 2:10 PM, Dave DeLong davedel...@me.com wrote: ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: MFMailComposeViewController: referencing attached data in HTML body
You could base64 your image data and use a data url to refer to it within your HTML. Then, you wouldn't have to attach it. -Heath Borders heath.bord...@gmail.com Twitter: heathborders http://heath-tech.blogspot.com On Sun, Jun 26, 2011 at 6:14 PM, Pierre Fournier shir...@hotmail.com wrote: Hi,is there a way to reference the attached data within the HTML body?[mailController addAttachmentData:pngDataFooter mimeType:@image/png fileName:@footer.png];[mailController setMessageBody:@htmlbodyimg src=\footer.png\/body/html isHTML:TRUE];When running such code, I get a blue question mark instead of the image, while the image is correctly attached.I want to kind of compose an html email based of different images. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/heath.borders%40gmail.com This email sent to heath.bord...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: iOS: Automatically resizing subviews
Make sure your subviews are small enough to fit inside your view initially. I've had issues with resizing clipped subviews. -Heath On Jun 6, 2011 1:52 AM, Development developm...@fornextsoft.com wrote: I thought I understood how auto resizing worked but I don't According to the docs if I want to automatically resize all the subviews of a view I need to set the View up with [self setAutoresizesSubviews:YES]; self.contentMode =UIViewContentModeScaleToFill; No? I tried this but when I resize the view it's subview remains centered and the same size. Inside of all the subviews I have done the following: [self setAutoresizingMask:UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight]; Is there a step I'm missing? The problem is that the main view's subview rotates. And the whole thing obviously can be resized. If I manually resize the rotated subview I'm doing it wrong because it looses it's shape completely I was hoping I could use autoresizing to solve this issue but I can't get it to work.___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/heath.borders%40gmail.com This email sent to heath.bord...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Core Animation: performing a two-step animation
Perform the second transform after the first animation completes in a separate animation block. You can start the second animation block from the first animation block's completion block. -Heath Borders heath.bord...@gmail.com Twitter: heathborders http://heath-tech.blogspot.com On Wed, Jun 1, 2011 at 9:46 PM, Graham Cox graham@bigpond.com wrote: I'm new to Core Animation, so forgive me if I've missed something really obvious. I want to perform a 2-step animation of a layer's -transform, so it appears to expand then shrink back to end up slightly larger than it started out. I can easily do a 1-step animation by using a scaling transform, but setting it twice doesn't achieve the effect I want: myLayer.transform = CATransform3DMakeScale( 1.5, 1.5, 1.0 ); myLayer.transform = CATransform3DMakeScale( 1.1, 1.1, 1.0 ); Do I need to use a keyframe animation? --Graham ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/heath.borders%40gmail.com This email sent to heath.bord...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Fuzzy string matching
CLucene might be a bit heavy, but it works great for me. -Heath From my iTouch4 On May 31, 2011, at 12:02 PM, Eric E. Dolecki edole...@gmail.com wrote: Thanks - I'm not sure that's going to be flexible enough for me or not, but I'll give it a go. Thanks again! Google Voice: (508) 656-0622 Twitter: eric_dolecki XBoxLive: edolecki PSN: eric_dolecki http://blog.ericd.net On Tue, May 31, 2011 at 12:47 PM, Dave DeLong davedel...@me.com wrote: I've used this in the past with pretty good results: http://weblog.wanderingmango.com/?pg=2 HTH, Dave Sent from my iPad On May 31, 2011, at 9:32 AM, Eric E. Dolecki edole...@gmail.com wrote: Wondering if anyone knows of or has an Obj-C Class that can provide levels of fuzzy string matching... looking for % match or something similar. I have something now but it's returning results that aren't nearly accurate enough for me to employ with confidence. Thank you, Eric Google Voice: (508) 656-0622 Twitter: eric_dolecki XBoxLive: edolecki PSN: eric_dolecki http://blog.ericd.net ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/davedelong%40me.com This email sent to davedel...@me.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/heath.borders%40gmail.com This email sent to heath.bord...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Threading synchronization: does a primitive exists?
Try NSConditionLock. Its documentation should be pretty self-explanatory. -Heath Borders heath.bord...@gmail.com Twitter: heathborders http://heath-tech.blogspot.com On Thu, May 5, 2011 at 8:33 AM, eveningnick eveningnick eveningn...@gmail.com wrote: Hello I have a thread A that spawns a thread B, and should stop, waiting before the thread B allows thread A to continue. In Windows, in a thread A, before spawning a thread B, i would create a synchronization Event primitive in the non signaled mode, the spawn a thread B, and call WaitForSingleObject(), waiting for thread B to switch the Event into the signaled mode, which would release the WaitForSingleObject() and allow the thread A to continue to operate. (WaitForSingleObject() freezes the thread, until the object that it is waiting for - e.g., an Event primitive - is switched into a signaled mode). In OS X i have no idea how to do that :S I guess it is impossible to do the same job using mutexes? Maybe some other primitives exist? I need this _only_ for debugging, it would greatly simplify my life. I am well aware that this is approach is deadlock-prone. Thanks for the response if i get one ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/heath.borders%40gmail.com This email sent to heath.bord...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: UIGestureRecognizer in superview firing
I've seen this behavior as well, and I solved it the same way you did. I hope there is a better way. -Heath Borders heath.bord...@gmail.com Twitter: heathborders http://heath-tech.blogspot.com On Mon, May 2, 2011 at 3:15 AM, Roland King r...@rols.org wrote: I have a UIView subclass which has a number of UIButtons and UISliders on it, it's a sort of control panel. I added UIPanGestureRecognizer to it with the idea that if you stick your finger down outside one of the embedded controls, you can move the window around. Wrote the handler for the gesture recognizer, that worked. However I found that if I press one of the buttons, or try to drag one of the sliders which are subviews of my view, the PanGestureRecognizer fires. That completely breaks those controls as the sliders stop sliding and you cannot drag yourself off the button to cancel the press, you just drag the view around. I've re-read the UIGestureRecognizer documentation again twice and cannot figure out why this is happening. Take the example of a touch going down on the knob of one of the sliders, hitTest:withEvent correctly returns the UISlider (I tested that) and so the touches should go to the slider directly and not to its superview, my UIView subclass or its attached gesture recognizer at all. I understand that gesture recognizers get touches before their attached views, this from the Event Handling Guide For iOS Delivery of events initially follows the usual path: from operating system to the application object to the window object representing the window in which the touches are occurring. But before sending an event to the hit-tested view, the window object sends it to the gesture recognizer attached to that view or to any of that view’s subviews. In this case the hit-tested view was the UISlider so I would expect touches to be sent to any gesture recognizers on that UISlider and its subviews and then to the UISlider itself but not to the UIView of which it's a subview nor its attached gesture recognizer, the slider would work, the view wouldn't try to pan. I did wonder if the UISlider didn't (for some strange reason) respond to touchesBegan:withEvent: and thus the touch was bubbling back up to the superview, my class, and being sent to the gesture recognizer there at the same time, but apart from there being no documentation about such a flow, the UISlider DOES respond to touchesBegan:withEvent:, so thats not it. I can only find documentation which talks about subviews of the hit-tested view and their recognizers receiving touches, nothing can I find about superviews, so this flow is puzzling. I'm going to use the PanGestureRecognizer delegate method gestureRecognizer:shouldReceiveTouch: to stop this happening. Can someone however explain which piece of documentation I've not read or have misunderstood which explains why the PanGR on the superview of the hit-tested view is getting touches at all? Thanks Roland ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/heath.borders%40gmail.com This email sent to heath.bord...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: viewWillDisappear not being called
I've seen this behavior also, specifically on iOS 3.1 while using a UIViewController inside a UINavigationController inside a UITabBarController. -Heath Borders heath.bord...@gmail.com Twitter: heathborders http://heath-tech.blogspot.com On Mon, Apr 25, 2011 at 9:59 PM, Jeffrey Walton noloa...@gmail.com wrote: Hi All, According to the documentation in the headers: // UIViewController.h // Called when the view is dismissed, covered or otherwise hidden. - (void)viewWillDisappear:(BOOL)animated; And Apple's documentation [1]: Notifies the view controller that its view is about to be dismissed, covered, or otherwise hidden from view. I'm not sure if I should be surprised or not, but viewWillDisappear does not appear to be called despite what the documentation claims. The view is part of a custom view controller (built with IB - nothing fancy) and presented modally. To duplicate, show a view modally and press the home button. Thanks in advance, Jeff [1] http://developer.apple.com/library/ios/#documentation/uikit/reference/UIViewController_Class/Reference/Reference.html ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/heath.borders%40gmail.com This email sent to heath.bord...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: viewWillDisappear not being called
It sure would have been helpful if viewWillDisappear was sent as
documented. When the home button is pressed, and the home screen is
presented, the view has clearly disappeared (no offense Alex).
I was seeing this when switching tabs, not when the home button was pressed.
-Heath Borders
heath.bord...@gmail.com
Twitter: heathborders
http://heath-tech.blogspot.com
On Tue, Apr 26, 2011 at 12:19 AM, Jeffrey Walton noloa...@gmail.com wrote:
On Mon, Apr 25, 2011 at 11:04 PM, Heath Borders heath.bord...@gmail.com
wrote:
I've seen this behavior also, specifically on iOS 3.1 while using a
UIViewController inside a UINavigationController inside a
UITabBarController.
YES - that is nearly my setup (iOS 4.3.2). I don't have the
intermediate UINavigationController, but the view has an
UINavigationBar.
Any ideas on how to locate an arbitrary view controller? The following
only locates the 5 associated with the Tab Bar, and not the top most
PasswordPromptController (which was presented modally).
It sure would have been helpful if viewWillDisappear was sent as
documented. When the home button is pressed, and the home screen is
presented, the view has clearly disappeared (no offense Alex).
Jeff
- (void)applicationWillResignActive:(UIApplication *)application
{
if(tabBarController.viewControllers != nil)
[self clearPasswords:tabBarController.viewControllers];
}
- (void)clearPasswords:(NSArray *)viewsControllers
{
Class passwordPromptClass = [PasswordPromptController class];
for (UIViewController * viewController in viewsControllers)
{
if ([viewController isKindOfClass:passwordPromptClass])
[(PasswordPromptController *)viewController clearPassworAndPin];
}
}
On Mon, Apr 25, 2011 at 9:59 PM, Jeffrey Walton noloa...@gmail.com wrote:
Hi All,
According to the documentation in the headers:
// UIViewController.h
// Called when the view is dismissed, covered or otherwise hidden.
- (void)viewWillDisappear:(BOOL)animated;
And Apple's documentation [1]:
Notifies the view controller that its view is about to be dismissed,
covered, or otherwise hidden from view.
I'm not sure if I should be surprised or not, but viewWillDisappear
does not appear to be called despite what the documentation claims.
The view is part of a custom view controller (built with IB - nothing
fancy) and presented modally. To duplicate, show a view modally and
press the home button.
Thanks in advance,
Jeff
[1]
http://developer.apple.com/library/ios/#documentation/uikit/reference/UIViewController_Class/Reference/Reference.html
[SNIP]
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Installing ipa from MobileSafari after deleting app requires restart
I have an iPad1 running ios 4.3.2 I am distributing a beta version of my app with an ipa. I have been able to install from mobile safari without issue for a while. A couple of weeks ago, installing from MobileSafari would fail if I had deleted the app before installing. If I leave the app installed and re-install, everything works fine. If I delete my app, then restart my iPad, then install my app from MobileSafari, everything works fine. When I install from MobileSafari, my old App icon is still present in SpringBoard while a new progress icon shows. Then, the old icon is removed when the progress icon completes. This is different from an App-Store upgrade where there is no old App icon present. I created a small app to launch my app from a URL in case this was just a SpringBoard issue. It can launch my app when the App is successfully installed, but fails to launch my app after a failed install. My console log is below: Apr 22 17:09:53 testdevice kernel[0] Debug: launchd[77] Builtin profile: MobileSafari (sandbox) Apr 22 17:09:53 testdevice configd[26] Debug: CaptiveNetworkSupport:UIAllowedNotifyCallback:70 uiallowed: true Apr 22 17:10:32 testdevice configd[26] Debug: CaptiveNetworkSupport:UIAllowedNotifyCallback:70 uiallowed: false Apr 22 17:10:35 testdevice kernel[0] Debug: startEncoderGated Adjusting tail padding to 20352, Last Requested Tail Padding 16384 Apr 22 17:11:16 testdevice installd[73] Error: libMobileGestalt loadBasebandMobileEquipmentInfo: CommCenter error: 1:45 Apr 22 17:11:16 testdevice installd[73] Error: libMobileGestalt copyInternationalMobileEquipmentIdentity: Could not get mobile equipment info dictionary Apr 22 17:11:19 testdevice installd[73] Error: libMobileGestalt copyInternationalMobileEquipmentIdentity: Could not get mobile equipment info dictionary Thanks! -Heath Borders heath.bord...@gmail.com Twitter: heathborders http://heath-tech.blogspot.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Big Core Data, countForFetchRequest, and GCD
For thread-safety's sake why don't you just create a separate
NSManagedObjectContext for your asyncTask? They are cheap.
-Heath Borders
heath.bord...@gmail.com
Twitter: heathborders
http://heath-tech.blogspot.com
On Tue, Mar 29, 2011 at 4:38 PM, Steve Mykytyn smyky...@gmail.com wrote:
countForFetchRequest seems to bog down on really big collections of
entities. For approx 170K entities it takes around 10 seconds on an iPhone
3GS to count them, which is a problem in a UITableView where you are trying
to display a list of entities and associated counts.
A GCD based solution, that queues up countForFetchRequest on a concurrent
queue for each entity, and then updates the corresponding cell when
finished, seems to work pretty well, although one or two big entity counts
essentially bog down all the requests behind them. Counts are cached so
that countForFetchRequest is only called once for any entity.
Code below, can anyone suggest any further optimization or different
approaches that might be more effective?
(I'm aware of the danger of multi-threading core data - this particular
managed object context never changes and nothing is happening to it on other
threads when this read is going on)
- (void) countEntitiesNamed:(NSString *)entityName
inContext:(NSManagedObjectContext *)context forIndexPath:(NSIndexPath
*)indexPath {
NSNumber *rowCountObject = [self.rowCountMD valueForKey:entityName];
if (rowCountObject) return;
//
http://www.mikeash.com/pyblog/friday-qa-2009-08-28-intro-to-grand-central-dispatch-part-i-basics-and-dispatch-queues.html
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,
0), ^{
NSEntityDescription *ed;
NSFetchRequest *frq;
frq = [[[NSFetchRequest alloc] init] autorelease];
ed = [NSEntityDescription entityForName:entityName
inManagedObjectContext:context];
[frq setEntity:ed];
NSDate *startDate = [NSDate date];
NSUInteger rowCount = [context countForFetchRequest:frq error:nil];
NSTimeInterval timeInterval = -[startDate timeIntervalSinceNow];
DLog(@%0.2lf seconds for %d %@ ,timeInterval,rowCount,entityName);
dispatch_async(dispatch_get_main_queue(), ^{
[rowCountMD setValue:[NSNumber numberWithInteger:rowCount]
forKey:entityName];
UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:indexPath];
cell.detailTextLabel.text = [NSString stringWithFormat:@%@ objects,
[NSNumberFormatter localizedStringFromNumber:[NSNumber
numberWithInteger:rowCount]
numberStyle:NSNumberFormatterDecimalStyle]];
});
});
}
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Re: MPMoviePlayerController setContentURL twice
Your code worked! Thanks! The main difference between our snippets
was that you added the MPMoviePlayerController's view directly to the
UIViewController's view rather than putting it in a holder view (which
I doubt would matter) and that you aren't using the embedded controls.
I'll post back when I figure out what went wrong.
-Heath Borders
heath.bord...@gmail.com
Twitter: heathborders
http://heath-tech.blogspot.com
On Mon, Mar 21, 2011 at 11:50 PM, Matt Neuburg m...@tidbits.com wrote:
On Mon, 21 Mar 2011 22:59:04 -0500, Heath Borders heath.bord...@gmail.com
said:
That's exactly what I did. I have a brand new project with just a
ViewController with 3 views
[SNIP ridiculous quantities of code]
I can't read that. And it isn't what I suggested you do. I said make a
*minimal* project. Enough to prove to yourself that setting the contentURL
works. And no more than that! Here's my code; this is what I mean when I say
minimal and simple and stuff like that:
- (void)viewDidLoad {
[super viewDidLoad];
MPMoviePlayerController *player = [[MPMoviePlayerController alloc] init];
player.shouldAutoplay = NO;
player.controlStyle = MPMovieControlStyleNone;
[player.view setFrame: CGRectMake(0,0,200,150)];
[self.view addSubview: player.view];
self.thePlayer = player;
[player release];
}
- (IBAction)play1:(id)sender { // button 1
[self.thePlayer setContentURL: [[NSBundle mainBundle]
URLForResource:@blend1 withExtension:@mp4]];
[self.thePlayer play];
}
- (IBAction)play2:(id)sender { // button 2
[self.thePlayer setContentURL: [[NSBundle mainBundle]
URLForResource:@xbox withExtension:@mp4]];
[self.thePlayer play];
}
That's all. It works. So then you build up from there towards what you
*really* want to do. When it stops working, that's when you broke it. m.
--
matt neuburg, phd = m...@tidbits.com, http://www.apeth.net/matt/
A fool + a tool + an autorelease pool = cool!
Programming iOS 4!
http://www.apeth.net/matt/default.html#iosbook
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Re: MPMoviePlayerController setContentURL twice
I was able to replicate my issue. In my original code, I was only
allowing the movie to be played with the embedded controls. When I
set the contentURL a second time, my embedded controls were not
showing, so I couldn't play the movie again. As I mentioned
previously, Matt's code worked great. However, I can replicate my
issue by removing line 4 below.
1 - (IBAction)play1:(id)sender { // button 1
2 [self.thePlayer setContentURL: [[NSBundle mainBundle]
3URLForResource:@blend1 withExtension:@mp4]];
4[self.thePlayer play];
5 }
I only want to control the movie from the embedded controls, so I
don't want to programmatically play it. In the MPMediaPlayback
protocol, there is a prepareToPlay method, which must always be called
before the movie starts playing, and which is called if needed by
play.
So, replacing line 4 with
[self.thePlayer prepareToPlay];
makes my code work.
Thanks again for your help, Matt!
-Heath Borders
heath.bord...@gmail.com
Twitter: heathborders
http://heath-tech.blogspot.com
On Tue, Mar 22, 2011 at 8:30 AM, Heath Borders heath.bord...@gmail.com wrote:
Your code worked! Thanks! The main difference between our snippets
was that you added the MPMoviePlayerController's view directly to the
UIViewController's view rather than putting it in a holder view (which
I doubt would matter) and that you aren't using the embedded controls.
I'll post back when I figure out what went wrong.
-Heath Borders
heath.bord...@gmail.com
Twitter: heathborders
http://heath-tech.blogspot.com
On Mon, Mar 21, 2011 at 11:50 PM, Matt Neuburg m...@tidbits.com wrote:
On Mon, 21 Mar 2011 22:59:04 -0500, Heath Borders heath.bord...@gmail.com
said:
That's exactly what I did. I have a brand new project with just a
ViewController with 3 views
[SNIP ridiculous quantities of code]
I can't read that. And it isn't what I suggested you do. I said make a
*minimal* project. Enough to prove to yourself that setting the contentURL
works. And no more than that! Here's my code; this is what I mean when I say
minimal and simple and stuff like that:
- (void)viewDidLoad {
[super viewDidLoad];
MPMoviePlayerController *player = [[MPMoviePlayerController alloc] init];
player.shouldAutoplay = NO;
player.controlStyle = MPMovieControlStyleNone;
[player.view setFrame: CGRectMake(0,0,200,150)];
[self.view addSubview: player.view];
self.thePlayer = player;
[player release];
}
- (IBAction)play1:(id)sender { // button 1
[self.thePlayer setContentURL: [[NSBundle mainBundle]
URLForResource:@blend1 withExtension:@mp4]];
[self.thePlayer play];
}
- (IBAction)play2:(id)sender { // button 2
[self.thePlayer setContentURL: [[NSBundle mainBundle]
URLForResource:@xbox withExtension:@mp4]];
[self.thePlayer play];
}
That's all. It works. So then you build up from there towards what you
*really* want to do. When it stops working, that's when you broke it. m.
--
matt neuburg, phd = m...@tidbits.com, http://www.apeth.net/matt/
A fool + a tool + an autorelease pool = cool!
Programming iOS 4!
http://www.apeth.net/matt/default.html#iosbook
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Re: NSOperation with unit test
Your NSOperation is probably running on a background thread managed by the NSOperationQueue. Your test needs to wait until the NSOperationQueue has processed all its tasks. -Heath Borders heath.bord...@gmail.com Twitter: heathborders http://heath-tech.blogspot.com On Tue, Mar 22, 2011 at 10:35 PM, Shane software.research.developm...@gmail.com wrote: Hi, I am trying to write a unit test for a class that inherits from NSOperation. And I've implemented this class just as I did in my application (which works) and the test case is running, but when the 'addOperation:myClass' on the NSOperationQueue is called within the test method, I don't see that my NSOperation class is being executed. Is there something different about running NSOperations within a unit test? ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/heath.borders%40gmail.com This email sent to heath.bord...@gmail.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
MPMoviePlayerController setContentURL twice
I create an embedded MPMoviePlayerController thusly inside my loadView method: self.moviePlayerController = [[[MPMoviePlayerController alloc] init] autorelease]; // add to view, setup moviePlayerController's view frame, etc And I can later load a movie the user chooses thusly: NSURL *fileUrl = ... self.moviePlayerController.contentURL = fileUrl; and everything works great. However, if I set the contentURL again: NSURL *fileUrl2 = ... self.moviePlayerController.contentURL = fileUrl2; This does not work, even if fileUrl2 == fileUrl1. When I change the contentURL, I get the following playbackState and loadState: After first setContentURL: loadState == playable | playthroughOK playbackState == playing After my second setContentURL: playbackState == stopped loadState == unknown I can of course create a new MPMoviePlayerController for every movie, but I want to make sure this issue isn't indicative of a larger problem. Thanks! -Heath Borders heath.bord...@gmail.com Twitter: heathborders http://heath-tech.blogspot.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: MPMoviePlayerController setContentURL twice
forState:UIControlStateNormal];
[self.view addSubview:loadAudioButton];
UIButton *loadVideoButton = [UIButton
buttonWithType:UIButtonTypeRoundedRect];
loadVideoButton.autoresizingMask =
UIViewAutoresizingFlexibleLeftMargin |
UIViewAutoresizingFlexibleRightMargin |
UIViewAutoresizingFlexibleTopMargin;
loadVideoButton.frame = CGRectMake(CGRectGetMaxX(loadAudioButton.frame),
CGRectGetMaxY(self.moviePlayerHolderView.frame),
CGRectGetWidth(self.view.bounds) / 2,
50);
[loadVideoButton addTarget:self
action:@selector(loadBigVideoFromFile)
forControlEvents:UIControlEventTouchUpInside];
[loadVideoButton setTitle:@Load Video
forState:UIControlStateNormal];
[self.view addSubview:loadVideoButton];
}
- (void)viewDidUnload {
self.moviePlayerHolderView = nil;
self.moviePlayerController = nil;
[[NSNotificationCenter defaultCenter] removeObserver:self];
[super viewDidUnload];
}
-
(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return YES;
}
#pragma mark -
#pragma mark private API
- (void)loadBigAudioFromFile {
NSURL *fileUrl = [[NSBundle mainBundle] URLForResource:@heath
withExtension:@mov];
[self loadAssetFromFileUrl:fileUrl];
}
- (void)loadBigVideoFromFile {
NSURL *fileUrl = [[NSBundle mainBundle] URLForResource:@heath2
withExtension:@mov];
[self loadAssetFromFileUrl:fileUrl];
}
- (void)loadAssetFromFileUrl: (NSURL *) fileUrl {
[self.moviePlayerController stop];
self.moviePlayerController.contentURL = fileUrl;
NSLog(@after setContentURL to %@: %@, fileUrl,
self.moviePlayerController.contentURL);
}
- (void)moviePlayerPlaybackStateDidChange {
switch (self.moviePlayerController.playbackState) {
case MPMoviePlaybackStateStopped:
NSLog(@stopped);
break;
case MPMoviePlaybackStatePlaying:
NSLog(@playing);
break;
case MPMoviePlaybackStatePaused:
NSLog(@paused);
break;
case MPMoviePlaybackStateInterrupted:
NSLog(@interrupted);
break;
case MPMoviePlaybackStateSeekingForward:
NSLog(@seeking forward);
break;
case MPMoviePlaybackStateSeekingBackward:
NSLog(@seeking backward);
break;
default:
NSLog(@Unexpected playback state);
break;
}
}
- (void)moviePlayerLoadStateDidChange {
MPMovieLoadState loadState = self.moviePlayerController.loadState;
if (loadState == MPMovieLoadStateUnknown) {
NSLog(@unknown);
} else {
MPMovieLoadState loadStates[3] = {
MPMovieLoadStatePlayable, MPMovieLoadStatePlaythroughOK,
MPMovieLoadStateStalled
};
for (int i=0; i 3; i++) {
switch (loadState loadStates[i]) {
case MPMovieLoadStatePlayable:
NSLog(@playable);
break;
case MPMovieLoadStatePlaythroughOK:
NSLog(@playthroughOK);
break;
case MPMovieLoadStateStalled:
NSLog(@stalled);
break;
default:
break;
}
}
}
NSLog(@ContentURL: %@, self.moviePlayerController.contentURL);
}
@end
-Heath Borders
heath.bord...@gmail.com
Twitter: heathborders
http://heath-tech.blogspot.com
On Mon, Mar 21, 2011 at 10:47 PM, Matt Neuburg m...@tidbits.com wrote:
On Mon, 21 Mar 2011 16:04:52 -0500, Heath Borders heath.bord...@gmail.com
said:
I create an embedded MPMoviePlayerController thusly inside my loadView method:
self.moviePlayerController = [[[MPMoviePlayerController alloc] init]
autorelease];
// add to view, setup moviePlayerController's view frame, etc
Re: XML Namespace Definitions on Non-Root Elements
That worked! I actually changed it to: nodesForXPath:@/root/*[name() = \example:foo\] Thanks! -Heath Borders heath.bord...@gmail.com Twitter: heathborders http://heath-tech.blogspot.com On Sat, Mar 5, 2011 at 2:27 PM, Matt Neuburg m...@tidbits.com wrote: On Fri, 04 Mar 2011 14:25:06 -0600, Heath Borders heath.bord...@gmail.com said: I'm trying to parse a document with a namespace declared on a non-root element: rootexample:foo xmlns:example=http://example.com/foo;This is an exemplary foo!/example:foo/root I can read this xml into an NSXMLDocument just fine, but the following XPath query on root returns a non-nil, but empty NSArray: NSXMLNode *rootNode = ...// create my root node somehow NSArray *exampleFooElements = [rootNode nodesForXPath:@/root/example:foo error:nil]; // exampleFooElements != nil [exampleFooElements count] == 0 However, if I add the namespace declaration to the root element, everything is fine: root xmlns:example=http://example.com/foo;example:fooThis is an exemplary foo!/example:foo/root NSXMLNode *rootNode = ...// create my root node somehow NSArray *exampleFooElements = [rootNode nodesForXPath:@/root/example:foo error:nil]; // exampleFooElements != nil [exampleFooElements count] == 1 I can do this change programmatically, but I'd rather not have to modify the document. This namespace usage should be legal. Am I doing something wrong? It's no use just saying example:; you have to have a way to tell it what example: *is* - i.e. you have to bind the namespace - and you don't have a way to do that from here. One option is to bypass the namespace altogether: nodesForXPath:@//*[local-name()='foo'] m. -- matt neuburg, phd = m...@tidbits.com, http://www.apeth.net/matt/ A fool + a tool + an autorelease pool = cool! Programming iOS 4! http://www.apeth.net/matt/default.html#iosbook ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Proper way to construct an Attribute NSXMLNode so that its prefix is included in its XMLString
I have the following NSXMLDocument: document xmlns=http://example.com/document; xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance; /document I want to add an xsi:schemaLocation to the document so that I can validate it. The documentation says: attributeWithName:URI:stringValue: Returns an NSXMLNode object representing an attribute node with a given qualified name and string. + (id)attributeWithName:(NSString *)name URI:(NSString *)URI stringValue:(NSString *)value Parameters name A string that is the name of an attribute. URI A URI (Universal Resource Identifier) that qualifies name. value A string that is the value of the attribute. Return Value An NSXMLNode object of kind NSXMLAttributeKind or nil if the object couldn't be created. Discussion For example, in the attribute “bst:id=`12345’”, “bst” is the name qualifier (derived from the URI), “id” is the attribute name, and “12345” is the attribute value. Thus, I do the following: NSXMLElement rootXmlElement = ... NSXMLNode *schemaLocationAttributeXmlNode = [NSXMLNode attributeWithName:@schemaLocation URI:@xsi stringValue:@http://example.com/document document.xsd]; [rootXmlElement addAttribute:schemaLocationAttributeXmlNode]; However, this yields the following xml: document xmlns=http://example.com/document; xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance; schemaLocation=@http://example.com/document document.xsd /document Notice that there should be an xsi prefix on the schemaLocation attribute. and if I call try to get the attribute from the rootXmlElement, I get nothing: [rootXmlElement attributeForLocalName:@schemaLocation URI:@http://www.w3.org/2001/XMLSchema-instance;] == nil Since this didn't work, I tried using the namespace URI instead of the prefix when creating the attribute: NSXMLElement rootXmlElement = ... NSXMLNode *schemaLocationAttributeXmlNode = [NSXMLNode attributeWithName:@schemaLocation URI:@http://www.w3.org/2001/XMLSchema-instance; stringValue:@http://example.com/document document.xsd]; [rootXmlElement addAttribute:schemaLocationAttributeXmlNode]; This still yielded bad xml: document xmlns=http://example.com/document; xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance; schemaLocation=@http://example.com/document document.xsd /document However, this time I can at least get the attribute from my rootXmlElement: [rootXmlElement attributeForLocalName:@schemaLocation URI:@http://www.w3.org/2001/XMLSchema-instance;] != nil // closer! So, now, I tried specifying the prefix in the attribute name when creating the attribute: NSXMLElement rootXmlElement = ... NSXMLNode *schemaLocationAttributeXmlNode = [NSXMLNode attributeWithName:@xsi:schemaLocation URI:@http://www.w3.org/2001/XMLSchema-instance; stringValue:@http://example.com/document document.xsd]; [rootXmlElement addAttribute:schemaLocationAttributeXmlNode]; Success! I got good xml: document xmlns=http://example.com/document; xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance; xsi:schemaLocation=@http://example.com/document document.xsd /document This doesn't seem consistent with the documentation. Am I hacking here? Thanks! -Heath Borders heath.bord...@gmail.com Twitter: heathborders http://heath-tech.blogspot.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Validating NSXMLDocument with xml:space attributes
I have the following document:
root xmlns=http://example.com/root;
xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance;
xsi:schemaLocation=http://example.com/root root.xsdfoo
xml:space=preserve there is leading and trailing whitespace here
/foo/root
With the following XSD:
?xml version=1.0 encoding=utf-8?
xs:schema elementFormDefault=qualified
xmlns:xs=http://www.w3.org/2001/XMLSchema;
targetNamespace=http://example.com/root;
xmlns=http://example.com/root;
xs:import namespace=http://www.w3.org/XML/1998/namespace;
schemaLocation=http://www.w3.org/2001/03/xml.xsd; /
!-- Complex types describing all parts of the document --
xs:complexType name=fooType
xs:simpleContent
xs:extension base=xs:string
xs:attribute ref=xml:space fixed=preserve
/
/xs:extension
/xs:simpleContent
/xs:complexType
!-- The actual schema itself --
xs:element name=root
xs:complexType
xs:sequence
xs:element name=foo type=fooType
minOccurs=0 maxOccurs=unbounded /
/xs:sequence
/xs:complexType
/xs:element
/xs:schema
When I try to validate by reading in my document and then calling:
NSXMLDocument *document = ...
NSError *error = nil;
[document validateAndReturnError:error];
I always get the following errors:
Element '{http://example.com}foo', attribute 'space': The attribute
'space' is not allowed.
Element '{http://example.com}foo', attribute 'space': The attribute
'space' is not allowed.
Element '{http://example.com}foo', attribute 'space': The attribute
'space' is not allowed.
-Heath Borders
heath.bord...@gmail.com
Twitter: heathborders
http://heath-tech.blogspot.com
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Re: NSXMLElement children doesn't return whitespace text nodes
That worked! Embarrassingly, I looked at the documentation for NSXMLDocumentTidyXML and found my answer, as well: Changes malformed XML into valid XML during processing of the document. It also eliminates “pretty-printing” formatting, such as leading tab characters. However, it respects the xmlns:space=preserve attribute. (Input) Available in Mac OS X v10.4 and later. Declared in NSXMLNodeOptions.h. -Heath Borders heath.bord...@gmail.com Twitter: heathborders http://heath-tech.blogspot.com On Thu, Mar 3, 2011 at 10:33 PM, Gideon King gid...@novamind.com wrote: I recall that I had problems with that too, and IIRC, the NSXMLNodePreserveWhitespace didn't seem to work, but right now I have xml:space=preserve in the XML and parse it with just the NSXMLDocumentTidyXML option, and that works. I believe I just went through all the combinations and permutations until I found that magic combination, and have just stuck with it. HTH Regards Gideon On 04/03/2011, at 3:02 AM, Heath Borders wrote: I have the following xml: rootfooA foo./foo barA bar./bar/root Is there a way to access the whitespace-only NSXMLTextKind NSXMLNode? I've also tried changing my document thusly: root xml:space=preservefooA foo./foo barA bar./bar/root I specify NSXMLNodePreserveWhitespace as my option to NSXMLDocument's initWithXMLString:options:error: selector. Thanks! ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
XML Namespace Definitions on Non-Root Elements
I'm trying to parse a document with a namespace declared on a non-root element: rootexample:foo xmlns:example=http://example.com/foo;This is an exemplary foo!/example:foo/root I can read this xml into an NSXMLDocument just fine, but the following XPath query on root returns a non-nil, but empty NSArray: NSXMLNode *rootNode = ...// create my root node somehow NSArray *exampleFooElements = [rootNode nodesForXPath:@/root/example:foo error:nil]; // exampleFooElements != nil [exampleFooElements count] == 0 However, if I add the namespace declaration to the root element, everything is fine: root xmlns:example=http://example.com/foo;example:fooThis is an exemplary foo!/example:foo/root NSXMLNode *rootNode = ...// create my root node somehow NSArray *exampleFooElements = [rootNode nodesForXPath:@/root/example:foo error:nil]; // exampleFooElements != nil [exampleFooElements count] == 1 I can do this change programmatically, but I'd rather not have to modify the document. This namespace usage should be legal. Am I doing something wrong? Thanks! -Heath Borders heath.bord...@gmail.com Twitter: heathborders http://heath-tech.blogspot.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: NSXMLElement children doesn't return whitespace text nodes
From the Tree-Based XML Programming Guide: http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/NSXML_Concepts/Articles/CreatingXMLDoc.html#//apple_ref/doc/uid/TP40001255-BCIGHBDI Preservation. The enum constants beginning with NSXMLNodePreserve support document fidelity. They allow you to ensure that aspects of the string XML input—for instance, quoting style of attribute values, CDATA sections, attribute and namespace order—remain the same when XML text is written out from the NSXMLDocument object. If you do not specify a preservation option for an aspect, NSXMLDocument handles it in a predetermined manner. For example, when NSXMLDocument reads in and parses an XML document, it normally strips white-space characters used in formatting (including tabs and carriage returns); however, if you specify NSXMLNodePreserveWhitespace these characters are kept hidden in the internal representation of the XML document. (“Hidden” means the white-space characters are retained for the output of the document, but are not visible within the tree representation.) Note that white space in text nodes is always preserved, and is not affected by the NSXMLNodePreserveWhitespace option. Notice the last sentence: Note that white space in text nodes is always preserved, and is not affected by the NSXMLNodePreserveWhitespace option. If my text node has non-whitespace in it, it gets recognized as a text node, and whitespace is preserved in the stringValue: rootfooA foo./foomyText a space on either side /myTextbarA bar./bar/root NSXMLElement *myTextElement = ... // get myText element somehow [myTextElement stringValue]; // returns a space on either side However: rootfooA foo./foomyText /myTextbarA bar./bar/root NSXMLElement *myTextElement = ... // get myText element somehow [myTextElement stringValue]; // returns (empty) This seems inconsistent with Note that white space in text nodes is always preserved, and is not affected by the NSXMLNodePreserveWhitespace option. -Heath Borders heath.bord...@gmail.com Twitter: heathborders http://heath-tech.blogspot.com On Fri, Mar 4, 2011 at 9:40 AM, Heath Borders heath.bord...@gmail.com wrote: That worked! Embarrassingly, I looked at the documentation for NSXMLDocumentTidyXML and found my answer, as well: Changes malformed XML into valid XML during processing of the document. It also eliminates “pretty-printing” formatting, such as leading tab characters. However, it respects the xmlns:space=preserve attribute. (Input) Available in Mac OS X v10.4 and later. Declared in NSXMLNodeOptions.h. -Heath Borders heath.bord...@gmail.com Twitter: heathborders http://heath-tech.blogspot.com On Thu, Mar 3, 2011 at 10:33 PM, Gideon King gid...@novamind.com wrote: I recall that I had problems with that too, and IIRC, the NSXMLNodePreserveWhitespace didn't seem to work, but right now I have xml:space=preserve in the XML and parse it with just the NSXMLDocumentTidyXML option, and that works. I believe I just went through all the combinations and permutations until I found that magic combination, and have just stuck with it. HTH Regards Gideon On 04/03/2011, at 3:02 AM, Heath Borders wrote: I have the following xml: rootfooA foo./foo barA bar./bar/root Is there a way to access the whitespace-only NSXMLTextKind NSXMLNode? I've also tried changing my document thusly: root xml:space=preservefooA foo./foo barA bar./bar/root I specify NSXMLNodePreserveWhitespace as my option to NSXMLDocument's initWithXMLString:options:error: selector. Thanks! ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
NSXMLElement children doesn't return whitespace text nodes
I have the following xml: rootfooA foo./foo barA bar./bar/root Is there a way to access the whitespace-only NSXMLTextKind NSXMLNode? I've also tried changing my document thusly: root xml:space=preservefooA foo./foo barA bar./bar/root I specify NSXMLNodePreserveWhitespace as my option to NSXMLDocument's initWithXMLString:options:error: selector. Thanks! -Heath Borders heath.bord...@gmail.com Twitter: heathborders http://heath-tech.blogspot.com ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
