Recent questions tagged iPhone

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iphone - Integrating Facebook SDK in iOS

In iOS getting this error while i am integrating facebook sdk in my application "FBSDKLog: Cannot use the Facebook ... a seperate app in ios. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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307 views

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iphone - frame by frame animation

i wanna knw an alternate to this animation code.. -(void)movetree{ //[tree1 release]; treeMove = YES; tree1. ... heavier and it crashes alot.. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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374 views

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iphone - In iOS, Is it possible to add a font to the app during runtime?

In my app I want to let the user download and use fonts, but I don't know how to do this dynamically. ... is a subclass of UILabel. Please help See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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521 views

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iphone - Weird objective-c syntax - square brackets and @ sign

I'm using GHSidebarNav in one of my projects and I came across this code allocating an array of objects. ... withRevealBlock:revealBlock]] ] ]; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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412 views

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iphone - How to prepare an NSURL from an NSString continaing international characters?

I have to access a web server using a GET with international characters (Hebrew in my case but could be anything). ... in Objective-c to do so? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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546 views

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iphone - Retrieving the serial number from the device

How do we get the serial number of the device through objective C? I want to retrieve the iPod/iPhone/ ... number from within my application. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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390 views

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iphone - Is NSDictionary key order guaranteed the same as initialized if it never changes?

I've run into the same problem as found in this question. However, I have a follow-up question. I seem ... keys if the dictionary never changes? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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416 views

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iphone - Fragment Shader - Average Luminosity

Does any body know how to find average luminosity for a texture in a fragment shader? I have access to both ... average number from this array. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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451 views

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iphone - CGAffineTransformInvert: singular matrix in UIImagePickerController with showsCameraControls = NO

I tried this twice with two different apps and I get the same thing. I have a set up a UIImagePIckerController ... what I should do about this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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569 views

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iphone - ARC Semantic Issue: No visible @interface for Class declares the selector

Pretty basic stuff but i am unable to troubleshoot where the problem is. In my project, i have a ... /gist.github.com/jessicamoore112/5558473 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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477 views

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iphone - iOS - Interface Builder: UIButton title disappears when setting image

I have made a project previously where I set a UIButton to have both text and also an image (in interface ... I'd appreciate it! Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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490 views

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iphone - Where is NSAlert.h in the iOS SDK?

According to iOS's Using and Creating Error Objects, one can display a error object with the following code. ... Any help would be appreciated. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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528 views

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iphone - Force UIViewController to only show in landscape mode

My app runs in portrait mode, but i want to show one screen in landscape mode only as it is a chart. ... force it into landscape mode only? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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496 views

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iphone - Set textbox focus in mobile safari

Hey, I was wondering how to set the focus to a text box in Mobile Safari. I've tried document.myForm. ... have the iPhone keyboard pop up. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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392 views

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iphone - willRotateToInterfaceOrientation not being called

I'm returning YES in my view controller's shouldAutorotateToInterfaceOrientation function, and I can see using breakpoints ... Any ideas? Mike See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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437 views

1 answer

iphone - Objective-C, .m / .mm performance difference?

I tend to use the .mm extension by default when creating new classes so that I can use ObjC++ later on if I ... is generally faster than C++)? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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651 views

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iphone - Slow down internet for iOS simulator

I have a random crash in my iOS app. This happens when on slow internet connection. My office internet speed ... regenerate the crash? Any help? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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313 views

1 answer

iphone - What does the /private prefix on an iOS file path indicate?

I have a bug when my app runs on the iPhone but not when it runs on the simulator. I was using ... -8770-A4D3FBD281F1/Documents/TempDir/test.jpg See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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402 views

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iphone - NSUrlConnectionDelegate - Getting http status codes

in iOS, how can I receive the http status code (404,500 200 etc) for a response from a web server. I am ... -C or Monotouch .NET answer ok. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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543 views

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iphone - UIScroll View Delegate not calling ScrollViewDidEndScrollingAnimation

I have implemented the UIScrollViewDelegate protocol in my .h file and i have implemented the - (void) ... this. Thanks and regards See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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769 views

1 answer

iphone - iOS get physical screen size programmatically?

Is this possible? I want the number of inches, not the number of pixels. I know it is approximately 160 ppi. But not exactly. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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479 views

1 answer

iphone - ld: symbol dyld_stub_binding_helper not found, normally in crt1.o/dylib1.o/bundle1.o for architecture i386 xcode 5

I created iphone/ipad app that was working well by xcode 4 and iOS6 and I installed xcode 5 and I'm trying ... help me. Thanks in advance. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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539 views

1 answer

iphone - CABasicAnimation unlimited repeat without HUGE_VALF?

I'm trying to perform auto repeat of my image rotation animation with CABasicAnimation. I have tried to search on ... value is hardcoded for it? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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444 views

1 answer

iphone - How do I programmatically set the Return Key for a particular UITextField?

I can't believe that this question hasn't been asked yet, but I have been unable to find it so that is my ... both keys appear as Done. Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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441 views

1 answer

iphone - Calculate UIWebView height depending on its content

I have a class named Announcement, it has a Title (NSString), a Publishing Date (NSString) and a Body ( ... only the UIWebView content. Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

606 views

1 answer

iphone - Notify app when iPad date time settings changed

I would like to get notified when ipad's date-time settings is changed. Is there any way for that?. I am ... it only when settings is changed. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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411 views

1 answer

iphone - UINavigationBar gradient details

I'm trying to recreate the look of a UINavigationBar. The background of the bar is drawn using a gradient, but ... done anything in this area? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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367 views

1 answer

iphone - Using AVMutableAudioMix to adjust volumes for tracks within asset

I'm applying an AVMutableAudioMix to a asset I've created, the asset generally consists of 3-5 audio tracks ... , please provide an example. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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