Re: Looking for a FTP framework
Le 11 août 2010 à 01:15, David Alter a écrit : I'm adding FTP support to a Mac application. It actually needs to support SFTP. I need to support upload and downloading. If a connection is dropped I need to be able to re-establish a connection and finish the operation. It looks like there are some choices out there and I wanted to see what people where suggesting. Here are the choices I have come across. 1) I have seen some information about ConnectionKit. It looks like this was written back in 2007. The original open source project appears to have vanished. However it looks like it was resurrected as a iOS framework. Sounds like it was well supported back in 2007. I'm wondering if it is still a good solution. I'm thinking changing it to work on the Mac would not be that hard to do. Here is where the project is hosted connectionkit - Project Hosting on Google Code http://code.google.com/p/connectionkit/ Nope. This project at googlecode has nothing to do with the original connection kit which is still alive: http://github.com/karelia/ConnectionKit -- Jean-Daniel ___ 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
Update Window of Snow Leopard's Dock Exposé
Hi, when holding down the mouse button on an running app in Snow Leopard's Dock, you get Exposé showing all the windows of that app. Problem: when the app is hidden, the windows are not updated. You can easily reproduce it e.g. with the QuickTime Player: Play a movie in QuickTime Player and try out the Dock Exposé feature. When QuickTime Player is not hidden, the movie plays well in the Exposé window. But when the QuickTime Player is hidden (Cmd+H), the movie does not play; Exposé is just displaying a frozen state of the video. My question: Is there any way to update the window content that is displayed by Dock Exposé if my app is hidden? Or can this be considered as a bug in Snow Leopard? Regards, Mani -- http://mani.de - friendly software iVolume - listen to music hands-free LittleSecrets - the encrypted notepad Sahara - sand in your pocket Watchdog - baffle the curious ___ 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: Custom zones...
On Aug 10, 2010, at 9:12 AM, Alastair Houghton wrote: That said, is the part about objects escaping zones really true for *NS*Zone? It's true for malloc zones, for sure, but the docs for NSRecycleZone say: Frees zone after adding any of its pointers still in use to the default zone. (This strategy prevents retained objects from being inadvertently destroyed.) Right -- I was talking about the historical, generic, use of NSZone. which seems to imply otherwise. You *are* just talking about *NS*Zone, right? malloc zones are very useful and I definitely don't want to see those go away (I'm thinking of a certain million-plus node data structure we maintain that we'd have to go calling free() a million or more times to release...) Right. Just NSZone. Malloc zones aren't going anywhere. b.bum ___ 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
Disable return-edit in text cell
Hello, I've got a standard NSTableView with text cells. I want the field editor to pop up when the user clicks on the cell, but not when pressing the return key (which triggers another action). How can I accomplish this? I've got a feeling there's a real simple solution, but I just cannot find that magic button in IB. -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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Disable return-edit in text cell
On Wed, Aug 11, 2010 at 10:12 AM, slasktrattena...@gmail.com slasktrattena...@gmail.com wrote: Hello, I've got a standard NSTableView with text cells. I want the field editor to pop up when the user clicks on the cell, but not when pressing the return key (which triggers another action). How can I accomplish this? I've got a feeling there's a real simple solution, but I just cannot find that magic button in IB. This is discussed in the text view documentation: http://developer.apple.com/mac/library/documentation/Cocoa/Conceptual/TextEditing/Tasks/InterceptKeys.html --Kyle Sluder ___ 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: Updating timestamp on save = merge error
On 2010 Aug 10, at 21:48, Gideon King wrote: I have a managed object I want to update with a last saved timestamp on save. I have the update done on the NSPersistentDocument -saveToURL:ofType:forSaveOperation:error: method. This works fine, except on save as. I know that the save as creates a new document and updates from the managed objects, and then saves, and it seems that there is a managed object context merge happening in there. In my case, the timestamp has changed, so I get an error message saying that it can't merge the changes. Is there a way that I can tell that it's in the process of merging changes in the middle of a save as, and therefore not update the timestamp? Or some other method that I can accomplish my goal of having a save timestamp without running into this issue that happens during a Save As operation. I've probably oversimplified your problem, but it seems that not updating your timestamp in -saveToURL:ofType:forSaveOperation:error: if the forSaveOperation: parameter == NSSaveAsOperation would help. Core Data doesn't do anything until you invoke super in there. And/or as far as can't merge the changes, you can clear those with -[NSManagedObjectContext setMergePolicy:]. ___ 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: CGImage to NSImage, or PDFPage?
On Aug 10, 2010, at 6:49 PM, Brian Postow wrote: Also, I know that a PDF File stores the resolution for each image that's on a page, however, once I've turned it into a PDFDocument/PDFPage, is there any way to get the resolution out? I happen to know that every page in the document is a separate, single image with (probably) non-72DPI resolution, created with initWithImage, with an NSImage that has it's size in 72DPI points, but it's one representation's size in pixels. I know that that information is in there somewhere, but all of the boxes are in user units (72dpi), not pixels... Brian Postow Senior Software Engineer Acordex Imaging Systems ___ 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: Disable return-edit in text cell
Thanks! I read that prior to posting, and tried to intercept the keystroke with control:textView:doCommandBySelector: - but it's only called when ending the editing session. Anyway, I found the solution I was looking for by simply catching the return key in keyDown: in the table view. Duh... -F On Wed, Aug 11, 2010 at 7:16 PM, Kyle Sluder kyle.slu...@gmail.com wrote: On Wed, Aug 11, 2010 at 10:12 AM, slasktrattena...@gmail.com slasktrattena...@gmail.com wrote: Hello, I've got a standard NSTableView with text cells. I want the field editor to pop up when the user clicks on the cell, but not when pressing the return key (which triggers another action). How can I accomplish this? I've got a feeling there's a real simple solution, but I just cannot find that magic button in IB. This is discussed in the text view documentation: http://developer.apple.com/mac/library/documentation/Cocoa/Conceptual/TextEditing/Tasks/InterceptKeys.html --Kyle Sluder ___ 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: CGImage to NSImage, or PDFPage?
Hi, Images are stored as XObjects in the PDF Stream. Either you can parse the stream yourself, or you use the Voyeur.app sample code, and you will get the image with its size. Regards, Rafael Le 11 août 2010 à 13:50, Brian Postow a écrit : On Aug 10, 2010, at 6:49 PM, Brian Postow wrote: Also, I know that a PDF File stores the resolution for each image that's on a page, however, once I've turned it into a PDFDocument/PDFPage, is there any way to get the resolution out? I happen to know that every page in the document is a separate, single image with (probably) non-72DPI resolution, created with initWithImage, with an NSImage that has it's size in 72DPI points, but it's one representation's size in pixels. I know that that information is in there somewhere, but all of the boxes are in user units (72dpi), not pixels... Brian Postow Senior Software Engineer Acordex Imaging Systems ___ 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/rafael.cerioli%40gmail.com This email sent to rafael.ceri...@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: Disable return-edit in text cell
On Wed, Aug 11, 2010 at 11:02 AM, slasktrattena...@gmail.com slasktrattena...@gmail.com wrote: Thanks! I read that prior to posting, and tried to intercept the keystroke with control:textView:doCommandBySelector: - but it's only called when ending the editing session. Anyway, I found the solution I was looking for by simply catching the return key in keyDown: in the table view. Duh... Oh, you wanted Return to perform you action when the field editor wasn't active? I'm sorry for misreading it as if you wanted it to do something special from within the field editor. --Kyle Sluder ___ 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: Handling NSManagedObjectContextDidSaveNotification from different threads
On Aug 10, 2010, at 2:55 PM, Rick Mann wrote: We have an app that uses a main NSManagedObjectContext (MOC) for all UI-related work, and has background threads that add and update data via their own dedicated MOCs. When they call -save: on their MOC, the main MOC gets the NSManagedObjectContextDidSaveNotification and calls -mergeChangesFromContextDidSaveNotification:. The problem is, this actually happens on the thread that called -save:, not on the main thread. We're seeing occasional crashes, and suspect that it is due to this problem. However, I didn't see anything in the docs that said we had to call -save: from the main thread, or take any special steps when handling that notification. Did I just overlook something, or should this work safely always? It seems like the latter is unlikely, since two threads could be accessing a MOC simultaneously. Are you following or taking into account everything shown here: http://developer.apple.com/mac/library/documentation/Cocoa/Conceptual/CoreData/Articles/cdMultiThreading.html#//apple_ref/doc/uid/TP40003385-SW1 ? Keary Suska Esoteritech, Inc. Demystifying technology for your home or business ___ 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: Handling NSManagedObjectContextDidSaveNotification from different threads
On Aug 11, 2010, at 12:55:26, Keary Suska wrote: On Aug 10, 2010, at 2:55 PM, Rick Mann wrote: We have an app that uses a main NSManagedObjectContext (MOC) for all UI-related work, and has background threads that add and update data via their own dedicated MOCs. When they call -save: on their MOC, the main MOC gets the NSManagedObjectContextDidSaveNotification and calls -mergeChangesFromContextDidSaveNotification:. The problem is, this actually happens on the thread that called -save:, not on the main thread. We're seeing occasional crashes, and suspect that it is due to this problem. However, I didn't see anything in the docs that said we had to call -save: from the main thread, or take any special steps when handling that notification. Did I just overlook something, or should this work safely always? It seems like the latter is unlikely, since two threads could be accessing a MOC simultaneously. Are you following or taking into account everything shown here: http://developer.apple.com/mac/library/documentation/Cocoa/Conceptual/CoreData/Articles/cdMultiThreading.html#//apple_ref/doc/uid/TP40003385-SW1 ? We did, as far as anyone here knows. I just find it interesting that the preferred approach, to use multiple MOCs and one PSC, creates a situation in which a MOC is likely to be manipulated by multiple threads: when handling the didSave notification. Keary Suska Esoteritech, Inc. Demystifying technology for your home or business ___ 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: Handling NSManagedObjectContextDidSaveNotification from different threads
On Wed, Aug 11, 2010 at 1:07 PM, Rick Mann rm...@latencyzero.com wrote: We did, as far as anyone here knows. I just find it interesting that the preferred approach, to use multiple MOCs and one PSC, creates a situation in which a MOC is likely to be manipulated by multiple threads: when handling the didSave notification. This question comes up on the list periodically. -mergeChangesFromContextDidSaveNotification: is specifically designed to handle multiple threads correctly. I filed rdar://problem/6933634 last May about this being poorly documented in response to this thread, which contains a response from Ben Trumbull: http://www.cocoabuilder.com/archive/message/cocoa/2009/5/29/237809 --Kyle Sluder ___ 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: Handling NSManagedObjectContextDidSaveNotification from different threads
Thanks much for that! On Aug 11, 2010, at 13:16:28, Kyle Sluder wrote: On Wed, Aug 11, 2010 at 1:07 PM, Rick Mann rm...@latencyzero.com wrote: We did, as far as anyone here knows. I just find it interesting that the preferred approach, to use multiple MOCs and one PSC, creates a situation in which a MOC is likely to be manipulated by multiple threads: when handling the didSave notification. This question comes up on the list periodically. -mergeChangesFromContextDidSaveNotification: is specifically designed to handle multiple threads correctly. I filed rdar://problem/6933634 last May about this being poorly documented in response to this thread, which contains a response from Ben Trumbull: http://www.cocoabuilder.com/archive/message/cocoa/2009/5/29/237809 --Kyle Sluder ___ 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
iphone large image downloading
Hi, Can any one have an idea of what is the maximum image limit(size and resolution) in iphone?. There are some images in web server. In my application , I am getting these as NSData (one image at a time) and displaying the image using the following code NSData *imageData = [[NSData alloc]initWithContentsOfURL:[NSURL URLWithString:imageURLString]]; UIImage *sampleImage = [UIImage imageWithData:imageData]; This is working fine for small images ( upto 1MB of size and resolution of 1024*1024). But for large images ( 3MB size and resolution of 2500*2500), the application is getting crashed. Can any one advise me on this. Thanks in advance. Thanks, Santhosh Kumar Gundu ___ 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
Split View
Hi,
I am trying to make a drill down (table1 table2 detail view) using a split
view template. I would like to reuse the same table view and the same table
view controller.
The problem is that the cells are empty, if I drill down to the 2nd level.
I based my code on a nice tutorial
http://www.iphonesdkarticles.com/2009/03/uitableview-drill-down-table-view.html.
It worked fine for a navigation based template.
I tried to modify it for a split view template as following:
RootViewController.m
...
- (void)tableView:(UITableView *)TableView didSelectRowAtIndexPath:(NSIndexPath
*)indexPath {
//Get the dictionary of the selected data source.
NSDictionary *dictionary = [self.tableDataSource
objectAtIndex:indexPath.row];
//Get the children of the present item.
NSArray *Children = [dictionary objectForKey:@Children];
if([Children count] == 0) {
detailViewController.detailItem = [dictionary objectForKey:@Title];
}
else {
RootViewController *rvController = [RootViewController alloc];
//Increment the Current View
rvController.CurrentLevel += 1;
//Set the title;
rvController.CurrentTitle = [dictionary objectForKey:@Title];
//Push the new table view on the stack
[self.navigationController pushViewController:rvController
animated:YES];
rvController.tableDataSource = Children;
[rvController release];
}
}
How do I have to change the code? I guess the error is:
RootViewController *rvController = [RootViewController alloc];
Thanks in advance for your help.
Best
Gerd
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Re: iphone large image downloading
On Aug 11, 2010, at 12:46 AM, SanthoshKumarGundu wrote: Can any one have an idea of what is the maximum image limit(size and resolution) in iphone?. There are some images in web server. In my application , I am getting these as NSData (one image at a time) and displaying the image using the following code NSData *imageData = [[NSData alloc]initWithContentsOfURL:[NSURL URLWithString:imageURLString]]; UIImage *sampleImage = [UIImage imageWithData:imageData]; This is working fine for small images ( upto 1MB of size and resolution of 1024*1024). But for large images ( 3MB size and resolution of 2500*2500), the application is getting crashed. What kind of crash are you getting? I would bet that the exception code is 0x8badf00d (see TN2151 for information on what that means and how to read crash reports). You are actually pretty lucky that the first version works at all, and I bet that if you are on a slow or broken network that it won't work and you will get a similar crash. Generally any using -initWithContentsOfURL: for remote URLs will fail if you are trying to do so on the main thread (and if you are using UIKit, you are probably trying to do so on the main thread, like the above code). The correct solution here is to use asynchronous networking to download the data and once you finish the download you can create a UIImage from the gathered data. Using synchronous networking (like you are above) is generally discouraged. -- David Duncan ___ 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
NSKeyedArchiver on OSX to NSKeyedUnarchiver iOS
Greetings
I'm having problems unarchiving my data in the iphone.
here is the workout.
1: I archive a AttributedString to my CoreData NSData property using
NSKeyedarchiver
2: Transfer the database to the iphone.
3: load the data using NSKeyedUnarchiver on the iphone.
NSAttributedString *as = (NSAttributedString*)[NSKeyedUnarchiver
unarchiveObjectWithData:attributedStringData];
that crashes saying:
-[NSKeyedUnarchiver decodeObjectForKey:]: cannot decode object of class (NSFont)
I understand that the NSFont is UIFont on the iphone, or has similarities.
so i implemented a Delegate method to replace the class.
//--
- (Class)unarchiver:(NSKeyedUnarchiver *)unarchiver
cannotDecodeObjectOfClassName:(NSString *)name originalClasses:(NSArray
*)classNames{
if ([name isEqualToString:@NSFont])
return [UIFont class];
return nil;
}
but that never gets called because the class method does not allow for a
delegate and instantiating the unarchiver class confuses me in how I should
trigger the decoding once it is instantiated.
Any pointers ?
Sandro Noel.
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Re: NSKeyedArchiver on OSX to NSKeyedUnarchiver iOS
On Aug 11, 2010, at 3:53 PM, Sandro Noël wrote:
Greetings
I'm having problems unarchiving my data in the iphone.
here is the workout.
1: I archive a AttributedString to my CoreData NSData property using
NSKeyedarchiver
2: Transfer the database to the iphone.
3: load the data using NSKeyedUnarchiver on the iphone.
NSAttributedString *as = (NSAttributedString*)[NSKeyedUnarchiver
unarchiveObjectWithData:attributedStringData];
that crashes saying:
-[NSKeyedUnarchiver decodeObjectForKey:]: cannot decode object of class
(NSFont)
I understand that the NSFont is UIFont on the iphone, or has similarities.
so i implemented a Delegate method to replace the class.
//--
- (Class)unarchiver:(NSKeyedUnarchiver *)unarchiver
cannotDecodeObjectOfClassName:(NSString *)name originalClasses:(NSArray
*)classNames{
if ([name isEqualToString:@NSFont])
return [UIFont class];
return nil;
}
but that never gets called because the class method does not allow for a
delegate and instantiating the unarchiver class confuses me in how I should
trigger the decoding once it is instantiated.
Any pointers ?
You're going to run into worse problems - UIFont is not NSFont, nor can you
trivially substitute one for the other.
In general, while you can archive an NSAttributedString on OS X and unarchive
it on iOS, it's not going to work the way you want it to. Any of the
interesting properties that define things like appearance of the string, are
platform specific. There is no NSForegroundAttributeName, for example, on
iOS, and even if you explicitly look for appropriate key, on OS X this will
contain an NSColor, which, of course, does not exist on iOS (and UI color is
similar, but the encoding of NSColor is undocumented, so even if you attempt to
manually handle the decoding and try to make a UIColor, it would require that
undocumented information - not to mention that there are parts of NSColor such
as color space that don't exist at all on iOS). Similarly for font
information, paragraph style (including alignment, tabs, margins), embedded
images, etc...
You might be able to get away with using CoreText and it's attributes (which
are based on CG/CT objects like CGColor and CTFont), but obviously that's not
what you're going to get from AppKits default attributed string support. So
you'll probably have to give up on using AppKit's NSAttributedString extensions
all together, and switch to the CoreText ones (and take advantage of the
CFAttributedString/NSAttributedString toll free bridging).
Glenn Andreas gandr...@gandreas.com
The most merciful thing in the world ... is the inability of the human mind to
correlate all its contents - HPL
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Re: Handling NSManagedObjectContextDidSaveNotification from different threads
On Aug 11, 2010, at 13:16:28, Kyle Sluder wrote: http://www.cocoabuilder.com/archive/message/cocoa/2009/5/29/237809 This thread refers to a debug version of Core Data. I looked through my ADC assets, but don't see that anywhere. Does anyone know where I can find it? -- 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/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Updating timestamp on save = merge error
Thanks Jerry Yes, those are the things I had thought of - unfortunately the save type comes across as Save As for the first save too, and also I really should be setting it for a Save As anyway. I could get around it by using the merge policy, but that may well hide some other, real issues. It may be my best option though. I'm surprised nobody else appears to have faced this problem, or even chimed in to say that they were setting a timestamp and didn't have the problem, in which case I would go looking elsewhere for the real cause, but from what I can see at the moment, it really does look like a simple case of you can't set a value between the saveDocument: and the actual saving of the document, without it giving the merge error. Yes, I have tried moving the update right up to the saveDocument: and saveDocumentAs:, and I have another attribute that gets updated called saveCount, and if I only update that attribute, I still get the merge error, but if I update neither, then the Save As works fine. So I'm pretty sure I have narrowed it down to that one thing. So I guess I'll just have to bite the bullet and change the merge policy. Thanks again I've probably oversimplified your problem, but it seems that not updating your timestamp in -saveToURL:ofType:forSaveOperation:error: if the forSaveOperation: parameter == NSSaveAsOperation would help. Core Data doesn't do anything until you invoke super in there. And/or as far as can't merge the changes, you can clear those with -[NSManagedObjectContext setMergePolicy:]. ___ 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: NSKeyedArchiver on OSX to NSKeyedUnarchiver iOS
On Aug 11, 2010, at 4:32 PM, glenn andreas wrote:
On Aug 11, 2010, at 3:53 PM, Sandro Noël wrote:
Greetings
I'm having problems unarchiving my data in the iphone.
here is the workout.
1: I archive a AttributedString to my CoreData NSData property using
NSKeyedarchiver
2: Transfer the database to the iphone.
3: load the data using NSKeyedUnarchiver on the iphone.
NSAttributedString *as = (NSAttributedString*)[NSKeyedUnarchiver
unarchiveObjectWithData:attributedStringData];
that crashes saying:
-[NSKeyedUnarchiver decodeObjectForKey:]: cannot decode object of class
(NSFont)
I understand that the NSFont is UIFont on the iphone, or has similarities.
so i implemented a Delegate method to replace the class.
//--
- (Class)unarchiver:(NSKeyedUnarchiver *)unarchiver
cannotDecodeObjectOfClassName:(NSString *)name originalClasses:(NSArray
*)classNames{
if ([name isEqualToString:@NSFont])
return [UIFont class];
return nil;
}
but that never gets called because the class method does not allow for a
delegate and instantiating the unarchiver class confuses me in how I should
trigger the decoding once it is instantiated.
Any pointers ?
You're going to run into worse problems - UIFont is not NSFont, nor can you
trivially substitute one for the other.
In general, while you can archive an NSAttributedString on OS X and unarchive
it on iOS, it's not going to work the way you want it to. Any of the
interesting properties that define things like appearance of the string,
are platform specific. There is no NSForegroundAttributeName, for example,
on iOS, and even if you explicitly look for appropriate key, on OS X this
will contain an NSColor, which, of course, does not exist on iOS (and UI
color is similar, but the encoding of NSColor is undocumented, so even if you
attempt to manually handle the decoding and try to make a UIColor, it would
require that undocumented information - not to mention that there are parts
of NSColor such as color space that don't exist at all on iOS). Similarly
for font information, paragraph style (including alignment, tabs, margins),
embedded images, etc...
You might be able to get away with using CoreText and it's attributes (which
are based on CG/CT objects like CGColor and CTFont), but obviously that's not
what you're going to get from AppKits default attributed string support. So
you'll probably have to give up on using AppKit's NSAttributedString
extensions all together, and switch to the CoreText ones (and take advantage
of the CFAttributedString/NSAttributedString toll free bridging).
What you could do is continue to use the best possible API on both OS flavors.
Then, instead of archiving platform-specific objects, archive primitives that
describe the object instead.
For example, if you have an NSColor on Mac OS X, archive the color components,
etc. as needed. Then, when unarchiving on iOS, rebuild up an appropriate
UIColor.
This is I think the only thing you can do to basically future-proof your code
(or come very close to it). Attempting to pick a set of objects that just
happen to be archived the same exact way between OS flavors just seems too
fragile. And, using those objects may not be the simplest thing to do on each
specific OS.
___
Ricky A. Sharp mailto:rsh...@instantinteractive.com
Instant Interactive(tm) http://www.instantinteractive.com
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Re: iphone large image downloading
The UIImage class docs indicate you shouldn't create images larger than 1024 x 1024. You will either need to make sure your server will never send down an image larger than that, or download the image and downsample it to a reasonable size. Dave On Aug 11, 2010, at 12:46 AM, SanthoshKumarGundu wrote: Hi, Can any one have an idea of what is the maximum image limit(size and resolution) in iphone?. There are some images in web server. In my application , I am getting these as NSData (one image at a time) and displaying the image using the following code NSData *imageData = [[NSData alloc]initWithContentsOfURL:[NSURL URLWithString:imageURLString]]; UIImage *sampleImage = [UIImage imageWithData:imageData]; This is working fine for small images ( upto 1MB of size and resolution of 1024*1024). But for large images ( 3MB size and resolution of 2500*2500), the application is getting crashed. Can any one advise me on this. ___ 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: iphone large image downloading
On Aug 11, 2010, at 3:31 PM, Dave Camp wrote: The UIImage class docs indicate you shouldn't create images larger than 1024 x 1024. You will either need to make sure your server will never send down an image larger than that, or download the image and downsample it to a reasonable size. This particular language has been relaxed somewhat. As of iOS 3, creating and using images larger than 1024 in either dimension should work, as long as you have the memory for it. Of course, a 2.5K square image consumes about 24MB when decompressed. That should generally work on devices that have more built in memory, but is almost certain to fail on older devices that do not. But 24MB is still a huge amount of memory to consume on a single image that the user can't even see all at once. -- David Duncan ___ 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: NSKeyedArchiver on OSX to NSKeyedUnarchiver iOS
Glenn Ricky thank you for the insight. The reason I am trying to pass the attributed string from one platform to the other is exactly because I am using CoreText to render the string. is there a way to render plain RTF strings with core Text? best regards. On 2010-08-11, at 5:32 PM, glenn andreas wrote: You might be able to get away with using CoreText and it's attributes (which are based on CG/CT objects like CGColor and CTFont), but obviously that's not what you're going to get from AppKits default attributed string support. So you'll probably have to give up on using AppKit's NSAttributedString extensions all together, and switch to the CoreText ones (and take advantage of the CFAttributedString/NSAttributedString toll free bridging). Glenn Andreas gandr...@gandreas.com The most merciful thing in the world ... is the inability of the human mind to correlate all its contents - HPL ___ 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: NSKeyedArchiver on OSX to NSKeyedUnarchiver iOS
On Wed, Aug 11, 2010 at 3:56 PM, Sandro Noël apple.li...@gestosoft.com wrote: is there a way to render plain RTF strings with core Text? As David Duncan suggested in the previous thread you posted, you need to write and read this information yourself. There is no RTF support on iOS. You might want to look into using a custom plist-based representation. --Kyle Sluder ___ 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: CGImage to NSImage, or PDFPage?
On Aug 11, 2010, at 2:03 PM, Rafael Cerioli wrote: Hi, Images are stored as XObjects in the PDF Stream. Either you can parse the stream yourself, or you use the Voyeur.app sample code, and you will get the image with its size. Yeah, I was hoping there was a way to do it without doing that... Using Voyeur, I was able to confirm that I am successfully putting the resolution INTO the PDF. The media box is correctly in pts, 612 x 792, and the images are correctly in pixels. However, when I get the image OUT of the PDF, I lose the pixel data, only getting the media box size. I've tried getting the image out in two ways: one was to get the datarepresentation of the PDFPage, and then put that into an NSImage. The NSImage is 612x792 pixels. The other is to draw the PDFPage into an offscreen graphics context. Unfortunately, in order for that to work correctly, I need to know the size of the image in pixels before hand! Is there any way to get access to the xObjects in the PDFPage, other than parsing through the PDF data? Brian Postow Senior Software Engineer Acordex Imaging Systems ___ 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: NSKeyedArchiver on OSX to NSKeyedUnarchiver iOS
That's a good idea, i did not think of that, i could store the basic properties and rebuild it on the other side... a little more work but independent. thank you! Sandro. P.S. : I did look at the RTF Class from Omni, but it is tied to the framework and I did not want to include a framework for just a little fancy text. You might want to look into using a custom plist-based representation. --Kyle Sluder ___ 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: CGImage to NSImage, or PDFPage?
On Aug 11, 2010, at 5:27 PM, Brian Postow wrote: Is there any way to get access to the xObjects in the PDFPage, other than parsing through the PDF data? Unfortunately, no. Hackish as it may be, perhaps you can store the original image resolution/size as metadata in the PDF. All this back and forth between bitmap formats and PDF-as-container format though has me wondering if there isn't a better way. I don't know what you're trying to accomplish though so perhaps you have the optimal solution. John Calhoun— ___ 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: CGImage to NSImage, or PDFPage?
On Aug 11, 2010, at 8:42 PM, John Calhoun wrote: On Aug 11, 2010, at 5:27 PM, Brian Postow wrote: Is there any way to get access to the xObjects in the PDFPage, other than parsing through the PDF data? Unfortunately, no. Hackish as it may be, perhaps you can store the original image resolution/size as metadata in the PDF. Am I allowed to invent metaData to put into my PDFs? hmmm, yeah, that's pretty hackish... All this back and forth between bitmap formats and PDF-as-container format though has me wondering if there isn't a better way. I don't know what you're trying to accomplish though so perhaps you have the optimal solution. Oh, I realized that already. I got rid of the PDF as container. instead I have an NSMutableArray of CGImages. (actually a simple class with a CGImage and the resolution) Now I'm worried about loading PDF files that have been saved... Brian Postow Senior Software Engineer Acordex Imaging Systems ___ 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
iPhone Camera
Can an iPhone app get input from the camera? -koko ___ 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: iPhone Camera
On Aug 11, 2010, at 6:24 PM, k...@highrolls.net wrote: Can an iPhone app get input from the camera? Yes. -jcr ___ 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: iPhone Camera
On Wed, Aug 11, 2010 at 6:24 PM, k...@highrolls.net wrote: Can an iPhone app get input from the camera? No, all of the easily-findable documentation about using the camera is lying to you. As are all of the camera-using apps in the App store. --Kyle Sluder ___ 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
