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Recent questions tagged objective
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objective c - JSON parsing using NSJSONSerialization in iOS
I am parsing a JSON in my code. But I am getting some unexpected issues while retrieving data of ... happening because of NSJSONSerialization? See Question&Answers more detail:os...
asked
Oct 17, 2021
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Technique[技术]
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71.8m
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objective
0
votes
395
views
1
answer
objective c - What is this double underscore in Cocoa
The single underscore in Objective-C is apparently reserved for Apple's "internal" use (and was available for ... -underscore has me perplexed. See Question&Answers more detail:os...
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Oct 17, 2021
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Technique[技术]
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71.8m
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0
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442
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answer
objective c - Updating UILabel in the middle of a for() loop
I have a method with a for() loop. In that loop, mylabel.text is updated many times. However, the actual label ... there is a way to do this. See Question&Answers more detail:os...
asked
Oct 17, 2021
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Technique[技术]
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71.8m
points)
objective
0
votes
399
views
1
answer
objective c - Can you hard code IBActions and IBOutlets, rather than drag them manually in Interface Builder?
Is it possible to to hard code the IBActions and IBOutlets in code, instead of drag-connecting them in Interface Builder? See Question&Answers more detail:os...
asked
Oct 17, 2021
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Technique[技术]
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71.8m
points)
objective
0
votes
591
views
1
answer
objective c - Put a transparent NSWindow permanently on top of another NSWindow
I want to have some UI controls on top of a NSWebView and because of this problem " https://stackoverflow.com ... to properly use Outlets etc. See Question&Answers more detail:os...
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Oct 17, 2021
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Technique[技术]
by
深蓝
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71.8m
points)
objective
0
votes
346
views
1
answer
objective c - Blocks and stack
I know that blocks are created in the stack. However, since I don't have enough knowledge about stack and local variables, I ... %d ", b[i]()); See Question&Answers more detail:os...
asked
Oct 17, 2021
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Technique[技术]
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深蓝
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71.8m
points)
objective
0
votes
303
views
1
answer
objective c - Is possible send a array in Obj-c for a variable arguments function?
In python it is easy to build a dictionary or array and pass it unpacked to a function with variable parameters I have ... ?, ?)" ,??values]; See Question&Answers more detail:os...
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Oct 17, 2021
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Technique[技术]
by
深蓝
(
71.8m
points)
objective
0
votes
335
views
1
answer
objective c - Is garbage collection supported for iPhone applications?
Does the iPhone support garbage collection? If it does, then what are the alternate ways to perform the operations ... that you can provide. See Question&Answers more detail:os...
asked
Oct 17, 2021
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Technique[技术]
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71.8m
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objective
0
votes
275
views
1
answer
objective c - Phonegap: completely removing the black bar from the iPhone keyboard
We're using Phonegap to develop our mobile app, and we borrowed code from here to remove the black next/prev/ ... that has solved this problem? See Question&Answers more detail:os...
asked
Oct 17, 2021
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Technique[技术]
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71.8m
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objective
0
votes
297
views
1
answer
objective c - NSFetchedResultsController doesn't call controllerDidChangeContent: after update to non-fetched NSManagedObject
I populate and save: an initial NSManagedObjectContext setup an NSFetchedResultsController with a different ... show; @end See Question&Answers more detail:os...
asked
Oct 17, 2021
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Technique[技术]
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深蓝
(
71.8m
points)
objective
0
votes
433
views
1
answer
objective c - How do I add custom pins to the iPhone MapKit?
I'm testing out the MapKit framework on the iPhone and would really much like to switch the standard pin that ... self; } @end Thank you! See Question&Answers more detail:os...
asked
Oct 17, 2021
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Technique[技术]
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深蓝
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71.8m
points)
objective
0
votes
455
views
1
answer
objective c - Creating Excel (.xlsx) files in Cocoa
I'm writing a Cocoa application and I'm trying to export to the Excel XML format (ISO/IEC 29500-1) which ... files using Cocoa and Objective-c? See Question&Answers more detail:os...
asked
Oct 17, 2021
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Technique[技术]
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深蓝
(
71.8m
points)
objective
0
votes
419
views
1
answer
objective c - Private ivar in @interface or @implementation
Is there any reason to declare a private ivar in @interface instead of @implementation? I see code like this ... do something with _foo @end See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
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深蓝
(
71.8m
points)
objective
0
votes
365
views
1
answer
objective c - Check if my IOS application is updated
I need to check when my app launches if it was being updated, because i need to make a view that only ... to appear again after being updated. See Question&Answers more detail:os...
asked
Oct 17, 2021
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Technique[技术]
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深蓝
(
71.8m
points)
objective
0
votes
540
views
1
answer
objective c - NSAutoreleasePool is unavailable
I am following "Programming in Objective-C" 3rd edition and I am having problems with the first example. ... will be greatly appreciated. See Question&Answers more detail:os...
asked
Oct 17, 2021
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Technique[技术]
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深蓝
(
71.8m
points)
objective
0
votes
553
views
1
answer
objective c - Warning : Format string is not a string literal (potentially insecure)
I get the warning in the NSLog line Format string is not a string literal(potentially insecure) From the ... gone? NSLog(immutableString,nil); See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
objective
0
votes
740
views
1
answer
objective c - Interface type cannot be statically allocated?
I tried to put this in the header file of my view object: @property (nonatomic) UIColor color; to ... ownership or storage attribute? See Question&Answers more detail:os...
asked
Oct 17, 2021
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Technique[技术]
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深蓝
(
71.8m
points)
objective
0
votes
280
views
1
answer
objective c - UITableView: Handle cell selection in a mixed cell table view static and dynamic cells
I am trying to mix dynamic and static cells in a grouped table view: I would like to get two sections ... I really would appreciate your help See Question&Answers more detail:os...
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Oct 17, 2021
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Technique[技术]
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深蓝
(
71.8m
points)
objective
0
votes
376
views
1
answer
objective c - iOS - Facebook Connect logout not deleting login details?
I have used Facebook Connect on another project with relatively few problems, however on my current project it seems ... as it should be. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
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深蓝
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71.8m
points)
objective
0
votes
396
views
1
answer
objective c - How can I preserve an ordered list in Core Data
I'm writing an API method that returns a list of objects from a web service. This service also caches results and ... the best way to do it? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
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深蓝
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71.8m
points)
objective
0
votes
259
views
1
answer
objective c - Facebook App invites notification not working in ios
I had implemented Facebook App invites in Demo Application. It worked fine but did not get notification. I have ... :nil] show]; } See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
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深蓝
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71.8m
points)
objective
0
votes
405
views
1
answer
objective c - GROUP BY with SUM() using Core Data
I came across similar questions but none of them had a complete example of how to accomplish it. The SQL query I ... :]: object cannot be nil' See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
objective
0
votes
395
views
1
answer
objective c - Cast closures/blocks
In Objective-C, I often pass around blocks. I use them very often to implement patterns that help avoid storing stuff ... in a pure Swift way? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
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深蓝
(
71.8m
points)
objective
0
votes
315
views
1
answer
objective c - Two UITableView in the same view
I want to know if it's allowed to use Multiple UItableView in the same View (i don't see any ... in viewDidLoad for each UITableView? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
objective
0
votes
316
views
1
answer
objective c - How to programmatically get iOS's alphanumeric version string
I've been working with the nice PLCrashReport framework to send to my server the crash reports from my user ... everywhere I could imagine. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
objective
0
votes
435
views
1
answer
objective c - How can I compare two dates, return a number of days
how can I compare two dates return number of days. Ex: Missing X days of the Cup. look my code. NSDateFormatter ... (Missing X days of the Cup) See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
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深蓝
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71.8m
points)
objective
0
votes
454
views
1
answer
objective c - Hide the status bar on iPhone on a single view?
I want to show the status bar in my app in all views but one. I have tried modifying the 'status bar is ... how everything works but it does. See Question&Answers more detail:os...
asked
Oct 17, 2021
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Technique[技术]
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深蓝
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71.8m
points)
objective
0
votes
1.4k
views
1
answer
objective c - "Missing context for method declaration" for overridden description method
Am getting a "Missing context for method declaration" for my overridden description method. Can you tell ... return descriptionString; } @end See Question&Answers more detail:os...
asked
Oct 17, 2021
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Technique[技术]
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深蓝
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71.8m
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objective
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