You can set a custom restorationClass on a per view controller basis,
passing the process of instantiating the controller during restoration
through your own code that knows how to check whether the document is still
there. (We do something similar in our app in some places to make sure that
our Co
On Wed, Jan 27, 2016 at 10:29 AM, Jens Alfke wrote:
> I believe that text refers to an *SSL* server "with no certificate, or a
> self-signed, expired, or hostname-mismatched certificate”. There is a
> _separate_ key that allows non-SSL connections.
>
Reading over the rest of the page, I'm fairly
On Tue, Jan 26, 2016 at 11:18 PM, Jens Alfke wrote:
> I believe you’re using the wrong key. If you need non-SSL connections to
> work, the key you want is NSAllowsArbitraryLoads. The key you’re using is
> for situations where you make an SSL connection but the SSL server doesn’t
> meet ATS’s secu
Are you maybe looking for the UINavigationControllerDelegate method that
lets you provide an animation controller for the push? That appears to be
the way one hooks into the operation of the navigation controller in order
to override the default animations.
https://developer.apple.com/library/ios/
You might want to include some of your code for loading the model, to make
this discussion less hypothetical.
Also, when you say that "ObjC works just fine", what does that mean?
Objective-C code in the same app that's trying to load the same model that
Swift code in that app can't load? Or some s
On Sun, Sep 20, 2015 at 9:55 PM, Jens Alfke wrote:
> But honestly, if you're going this route, it will be much faster to
> transmit QR codes, since each code contains thousands of bits.
>
Especially given that recent versions of iOS can detect and decode QR codes
automatically, much like face de
On Thu, Aug 6, 2015 at 9:31 AM, Jens Alfke wrote:
> As far as I know, there’s no good Cocoa solution for super-simple
> persistence — something like a persistent NSDictionary that can efficiently
> store any number of keys. This would be pretty easy to implement using a
> bare-bones key/value sto
On Tue, Jul 14, 2015 at 10:48 AM, Dave wrote:
> Does anyone know of a tool/framework that allows C# code to be compiled
> and called from Cocoa?
>
You mean like http://xamarin.com/platform ?
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On Thu, Jul 9, 2015 at 12:02 AM, Roland King wrote:
> I did get an update the other day which just told me a new version is on
> the way, or just released perhaps. I think I have Dash 2, this is Dash 3
> and is an extra 10 bucks which I will probably end up paying eventually.
> How that works thr
Using client-side certificates in TLS is pretty standard stuff, and should
be well-supported by the system. You might start here:
https://developer.apple.com/library/ios/documentation/Cocoa/Conceptual/URLLoadingSystem/Articles/AuthenticationChallenges.html
The biggest issue with something like thi
On Fri, May 16, 2014 at 4:46 PM, William Squires wrote:
> Why doesn't NSData have a +[NSData dataWithString:(NSString *)] or
> -[NSData initWithString:(NSString *)] method? i.e. how do I convert the
> contents of an NSString object into an NSData object?
Try -[NSString dataUsingEncoding:] or
-
On Tue, Mar 18, 2014 at 5:30 PM, William Squires wrote:
> My best guess is to:
>
> 1) Make an ObjC class, and have it implement those methods that subclasses
> don't have to override. For those the subclasses must override, implement a
> stub that raises an exception if a message is sent to it (as
On Wed, Mar 19, 2014 at 12:38 AM, Luther Baker wrote:
> On Wed, Mar 19, 2014 at 12:14 AM, Sixten Otto wrote:
>
>> The significant difference, though, between an abstract class in Java or
>>
> C#, and a protocol in Objective-C, is that the former may have substantial
>>
On Tue, Mar 18, 2014 at 7:29 PM, Luther Baker wrote:
> A _better_ analogy to an Objective-C @protocol would be a formal Java
> interface.
>
Sure. And the same in C# (which the OP was asking about).
> So, Kyle may have good reasons for his answer - but if I understand the
> essence of your ques
On Thu, Oct 17, 2013 at 5:05 PM, Sixten Otto wrote:
> Let me be clear: I'm not talking about borrowing the "none" constant from
> Enumeration A and using it when calling something that expects values from
> Enumeration B. I agree that that would be confusing, and possib
appen in other circumstances).
On Fri, Mar 7, 2014 at 2:47 PM, Rick Mann wrote:
>
> On Mar 7, 2014, at 13:44 , Sixten Otto wrote:
>
> > FWIW: trying to access a managed object that has been deleted, but to
> which something still has a reference, can produce symptoms like the
FWIW: trying to access a managed object that has been deleted, but to which
something still has a reference, can produce symptoms like the second kind
of access you describe.
Sixten
On Fri, Mar 7, 2014 at 2:21 PM, Rick Mann wrote:
> It seems that objects can be faulted in two ways. In the firs
First off, you don't need to build the string ahead of time; NSLog()
supports vararg formatting:
NSLog(@"<%@> -(void)myMethod", myClassName);
Off the top of my head, I can't recall whether Class objects get formatted
as the class name automatically:
NSLog(@"<%@> -(void)myMethod", [self cla
library object loaded.)
Sixten
On Sat, Mar 1, 2014 at 8:33 AM, Koen van der Drift <
koenvanderdr...@gmail.com> wrote:
> You are right about the [cd], which is not supposed to be here, blame it
> on poor copy-paste skills.
>
> So how can I fix the predicate to compare entities
Two things:
1. No, doing a string comparison with contains (and case and diacritical
folding active) is one of the slower kinds of string comparison. Straight
equality should be much faster.
2. You say that there are two entities, with a relationship defined. Why,
then, are you doing a string com
The fetched results controller needs to be able to do its sorting in the
database (assuming a SQLite store). The section keypath itself doesn't
necessarily need to be a persistent property, as long as its values match
the ordering of the sort descriptors. (For instance: a table that sections
the re
WDC 2013 session 220 has some info
> about iOS's version of this which is very similar to Cococa's.
>
> TJ
>
>
> On Fri, Jan 17, 2014 at 10:43 AM, Sixten Otto wrote:
>
>> Using the methods in the UIStringDrawing category on NSString, it's pretty
>> str
Using the methods in the UIStringDrawing category on NSString, it's pretty
straightforward to measure the size of a string as it will appear on
screen, or to draw it into some constrained area. And I love that UIKit
handles all of the logic to truncate the string to fit.
But I find myself in a sit
> Gideon
>
> On 14 Jan 2014, at 8:28 am, Sixten Otto wrote:
>
> > I tend to agree that it's problematic, but it is deliberate. From the
> > documentation:
> >
> >
> …
>
>
>
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I tend to agree that it's problematic, but it is deliberate. From the
documentation:
Discussion
When presenting the popover, this method adds the toolbar that owns the
button to the popover’s list of passthrough views. Thus, taps in the
toolbar result in the action methods of the corresponding to
On Thu, Oct 17, 2013 at 3:15 PM, Quincey Morris <
quinceymor...@rivergatesoftware.com> wrote:
> Yeah. It seems to me there are two prime reasons to use a specific
> constant:
>
But I'm explicitly talking about APIs where there exists no such constant,
and calling code would generally use a litera
On Thu, Oct 17, 2013 at 11:22 AM, Seth Willits wrote:
> I would be hesitant to get used to such a constant.
>
I'll bite: why?
> Many APIs have their own constants for default options. (Search for
> DefaultOptions, OptionsDefault, NoOptions, and OptionsNone.)
>
Obviously. And those generally s
This has been driving me crazy, and hopefully someone on the list will know
off the top…
I remember coming across a reference somewhere recently to a constant
defined in Foundation or Core Foundations (I think!) that has a zero value,
and semantically means "I choose no options". Something that wo
Out of curiosity, does it matter if you change this line:
[content addAttribute:NSParagraphStyleAttributeName value:para
range:NSMakeRange(title.length,1)];
to this?
[content addAttribute:NSParagraphStyleAttributeName value:para
range:NSMakeRange(title.length,blurb.length)];
I don't know that
On Sun, Nov 4, 2012 at 12:25 AM, Rick Mann wrote:
> Ah, interesting! Still doesn't go quite as far as I want Apple to go: I want
> a power-cycled device to skip Springboard and launch my app. I want the
> watchdog to kill and restart my app.
>
Check out the Lock to App feature available with iO
On Fri, Aug 10, 2012 at 10:46 AM, Kyle Sluder wrote:
> Don't forget bout languages where numbers read right-to-left.
Like which? (I had, shamefully, completely forgotten r-t-l text in
this scheme. But some casual googling leads me to believe that Hebrew
and Arabic, at least, write numbers in big-
10, 2012, at 8:58 AM, Sixten Otto wrote:
>
> In order to make the columns line up, and to know how much space I'll
> need, what I'd like to do is to figure out, for each set of numbers,
> the width of the format I'll need. In other words, the maximum number
> of integer
I'm working on an app where I need to take several sets of numeric
values (currently stored as NSDecimalNumber), and display them in
columns. Each set will have approximately the same magnitude, but the
magnitude of each set may change, and I won't know ahead of time what
they are. So one might be
On Tue, Jul 24, 2012 at 11:27 AM, Sean McBride wrote:
> Yes. My object is a subclass of NSObject and I don't override isEqual:. As
> I test, I overrode it and always return NO. At first, I thought this did the
> trick, since Core Data passed through this and saved properly; but alas, it
> on
On Mon, Jul 23, 2012 at 3:03 PM, Sean McBride wrote:
> when I change it, instead of the usual setAttribute:newValue I mutate the
> object directly.
> - will/didChangeValueForKeyPath: but that's not a sufficient 'kick'
Out of random curiousity, does this big mutable object you're updating
change
On Thu, Jul 5, 2012 at 10:31 PM, Laurent Daudelin
wrote:
> But, do I follow the same naming convention as for the app icon by adding a
> "@2x" to the file name?
Absolutely. That's a general convention for naming hidpi resources.
https://developer.apple.com/library/ios/documentation/2DDrawing/Co
On Wed, Nov 30, 2011 at 7:59 PM, James West wrote:
> Is it possible to override the default behavior of the UITableView index so
> it only shows over the right side of a subsection of a table - scrolling with
> it, etc?
Yeah, that really isn't how the index works at all (even leaving out
the pa
On Thu, Nov 3, 2011 at 12:40 PM, Eric E. Dolecki wrote:
> Then in my code:
>
> UIStoryboard *storyboard = [UIStoryboard storyboardWithName:
> @"MainStoryboard" bundle:[NSBundle mainBundle]];
> HomeUIViewController *hv = [storyboard
> instantiateViewControllerWithIdentifier:@"deanna"];
> [splitView
On Thu, Sep 1, 2011 at 2:56 PM, Andrew Kinnie wrote:
> Last I looked at mogenerator, it didn't support Xcode 4.
mogenerator supports Xcode 4 just fine (it's the command-line tool).
It's Xmo'd (the Xcode plugin) that no longer works. So, you need to
regenerate the code manually when you change the
On Fri, Aug 19, 2011 at 1:14 PM, Steve Christensen wrote:
> Is there any reason why you can't put the downloaded file in your app's
> private cache directory (...//Library/Caches), i.e., what gets
> returned by NSSearchPathForDirectoriesInDomains(NSCachesDirectory,
> NSUserDomainMask, YES)? That
On Thu, Aug 18, 2011 at 10:14 PM, Quincey Morris
wrote:
> c. Can you show us the actual line of code that does the replacement?
Here's the original code (plus the addition of an assert on the file
manager). The property self.filePath has the path to the current
version of the file that's already
On Thu, Aug 18, 2011 at 10:38 PM, Ken Thomases wrote:
> My thinking is that -replaceItemAtURL:... is a wrapper around
> exchangedata() or FSExchangeObjects(). Those functions, and the general
> operation that they perform, require that the files to be exchanged be on
> the same file system. It
On Thu, Aug 18, 2011 at 10:14 PM, Quincey Morris <
quinceymor...@rivergatesoftware.com> wrote:
> a. What version of iOS did this fail on?
>
The 4.3 simulator (running on Snow Leopard, Xcode 4.0.2).
> b. Can you assert that the receiver of the 'replace…' method is not nil?
> (If it was nil, the
I have an iOS app where I'm storing files in the app's Documents directory,
and occasionally downloading new versions from the server to replace them.
The actual code is split across a number of files and classes, but the end
of the process goes like this:
- The download of the new data to a tempo
On Fri, Dec 10, 2010 at 2:50 PM, Jon Sigman wrote:
> I have a Cocoa app that uses a dedicated thread to receive messages, and I
> would
> like that thread to post those messages as notifications so they can be
> processed asynchronously, outside my receiving loop (but not on the main
> thread).
>
On Thu, Dec 9, 2010 at 6:20 AM, ico wrote:
> I want to develop an iPhone app which will consume a soap web service.
> I tried to use wsdl2objc (http://code.google.com/p/wsdl2objc/) to generate
> the Objective C stub codes, they can be compiled but it does not work.
>
You say that it doesn't work
On Thu, Jun 10, 2010 at 1:41 PM, Greg Parker wrote:
> If you suspect a use-after-free bug somewhere, and NSZombie doesn't find it,
> then try this:
> 1. Verify that NSZombie is operating. Add `NSMutableString alloc] init]
> release] release]` to your code. Make sure NSZombie catches it.
Wel
There are many, many questions and articles and discussions out there
about tracking down memory leaks, and finding over-release bugs.
Neither of those, AFAICT, is what's happening to me. If there's a good
article or Fine Manual out there that I should read, I haven't found
it.
In my iPhone app, I
On Tue, Jun 1, 2010 at 9:57 AM, Uli Kusterer
wrote:
> I think there are also some open source NNTP clients out there
> (Newswatcher for example, but I don't know what license it's under
When I was poking around fairly recently, it appeared that most of the
Open Source apps for Mac were, in fact,
On Tue, Jun 1, 2010 at 6:03 AM, Joshua Tucker
wrote:
> has anyone got any sample code for a POST request for interfacing with an API
> such as the DirectAdmin API?
I believe the usual StackOverflow answer is to consider
ASIHTTPRequest, which gives a somewhat higher-level API than
NSURLConnection
On Fri, May 21, 2010 at 3:42 PM, K.Darcy Otto wrote:
> I've tried prefacing the text file with a BOM in this way:
You may well already know this, and that may be something you're
attempting out of desperation, but:
"The endian order entry for UTF-8 in Table 2-4 is marked N/A because
UTF-8 code u
On Mon, May 10, 2010 at 12:28 PM, Patrick M. Rutkowski
wrote:
> I'm really not getting what the "key" argument to CCHmacInit() is
> supposed to be. I'm trying to implement oauth linked-in integration,
Not really an answer to your question, but are you trying to implement
OAuth from scratch? Is th
On Wed, Apr 28, 2010 at 6:11 PM, Laurent Daudelin
wrote:
> I've seen in a few apps a little rounded corners status window appearing
> [snip]
> Anybody knows how to do that?
http://github.com/jdg/MBProgressHUD ?
Sixten
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On Thu, Jan 28, 2010 at 6:16 PM, Keith Blount wrote:
> I am using the NSXML classes to generate and parse my own XML files.
> Sometimes these files store strings of text that has been brought in from
> other applications (for instance, there might be a plain text representation
> of some text t
On Tue, Jan 19, 2010 at 1:24 PM, Jens Alfke wrote:
> On Jan 19, 2010, at 8:53 AM, Shawn Rutledge wrote:
>> I didn't try CFDictionary yet; is that appropriate for an iPhone app?
>
> But try NSMapTable first. It's sort of halfway between the two — it's an
> Objective-C class but it has greater flexi
On Mon, Jan 18, 2010 at 3:17 AM, Eric Boo wrote:
> I'm trying to find a C/Objective-C function or library that will help me
> pack javascript, something like YUI Compressor or Dean Edwards's packer.
It may not be as aggressive as you'd like, but Doug Crockford's jsmin
has C source code available:
On Mon, Sep 21, 2009 at 4:58 PM, Jens Alfke wrote:
>> connections available to the application. Somehow I need to track
>> which/how many connections are idle, and dequeue requests to those
>> connections.
>
> Just keep a mutable array of free connections.
As I think about it more, I think you ma
On Mon, Sep 21, 2009 at 4:15 PM, Erick Calder wrote:
> ok, perhaps there's another way I can solve my problem. I have a little app
> called Trapster that uses something called "push technology"... I think what
> it means is that some server can send my app a signal and even though the
> app isn't
On Mon, Sep 21, 2009 at 12:20 PM, Jens Alfke wrote:
> You don't need concurrency or threads to handle socket connections. The 'Mac
> way' is to use asynchronous I/O, hooking up the socket connections to the
> runloop and getting callbacks when data is available.
That's true, and I knew better tha
I'm trying to work out in my head the best way to structure a Cocoa
app that's essentially a concurrent download manager. There's a server
the app talks to, the user makes a big list of things to pull down,
and the app processes that list. (It's not using HTTP or FTP, so I
can't use the URL-loading
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