Recent questions tagged iPhone

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iphone - CGAffineTransformMakeRotation counter clockwise always

I an trying to animate a UIImageView to rotate counter clockwise when a user touches it and moves its finger ... user ended rotating the image. 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

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iphone - iOS app missing screenshot

Since iOS 6 came out and Apple is requiring screenshots for any apps you update, I'm having problems with ... missing screenshots! Thank you! See Question&Answers more detail:os...

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

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265 views

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iphone - Objective-C Category and new iVar

I try to extend the functionality of SimpleAudioEngine of cocos2d with the ability to play several sound effect one ... also be very thankful. See Question&Answers more detail:os...

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

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381 views

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iphone - In Objective-c, safe and good way to compare 2 BOOL values?

I want to compare 2 BOOL values in objective-c. I found out that (3)-(6) of the following code works. (1)-(2) doesn't ... 1 (4) 1 (5) 1 (6) 1 See Question&Answers more detail:os...

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

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294 views

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iphone - Is it possible to animate an UIImage?

I'm wondering if there's anyway to animate an UIImage. I know that UIImageViews are possible to ... MPMediaItemArtwork? 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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447 views

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iphone - Getting "Expected a property attribute before 'strong'" when compiling an ARC file with LLVM-GCC

I have a project that contains some files that are using ARC, and some are not. The ones that are not ... Isn't strong synonymous with retain? See Question&Answers more detail:os...

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

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288 views

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iphone - Build information in iOS Application (date/time app was built)

I'm looking for a way to dynamically add in information about the application during the build process of ... should be generated dynamically. See Question&Answers more detail:os...

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

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399 views

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iphone - how to convert nsstring to uicolor?

I have one string(NSString) in string there is one value like string=@"black" now i want to use textcolore ... it not working can suggest me? See Question&Answers more detail:os...

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

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476 views

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iphone - didFailLoadWithError is called with UIWebView even though page later loads

I have a UIViewController which is a UIWebViewDelegate and has a UIWebView inside of it. I am trying to load ... website actually failed or not? See Question&Answers more detail:os...

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

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448 views

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iphone - iOS UIImageJPEGRepresentation error: Not a JPEG file: starts with 0xff 0xd9

I am writing a .jpg file to my app's Documents directory like this: NSData *img = UIImageJPEGRepresentation( ... convert the UIImage to NSData. See Question&Answers more detail:os...

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

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391 views

1 answer

iphone - AVAudioPlayer gives no sound output

I have imported audio toolbox and avfoundation to my class and added the frameworks to my project and am using ... However I get zero sound. See Question&Answers more detail:os...

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

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272 views

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iphone - failed to send the qLaunchSuccess packet, can't debug in the device

When I run the application, it is installed in the device, but will crash immediately. I want to debug in ... dyld armv7 /usr/lib/dyld 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

1 answer

iphone - Navigation Bar Title Font Size

I need to change the size of the Navigation Bar title text for one view controller in my iPhone app. I' ... this only applies to the tabBarItem. 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

1 answer

iphone - Why can't I register my iOS application to handle the image file type?

I have a problem registering image file types to my application. I tried adding the code below to my plist but ... and how could I fix 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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478 views

1 answer

iphone - Save NSCache Contents to Disk

I'm writing an app that needs to keep an in-memory cache of a bunch of objects, but that doesn't get out of ... 4+ and not just OS X. 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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345 views

1 answer

iphone - Implementing pull to refresh view feature

Can we implement pull to refresh feature on a custom view controller?. My view controller is not a table view ... can I implement this feature? See Question&Answers more detail:os...

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

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343 views

1 answer

iphone - Unit Test can't find Core Data model file

I've created a project with a Core Data model in it. The application looks for the model file (.momd) and ... unit test target? Thanks, -Luther See Question&Answers more detail:os...

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

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319 views

1 answer

iphone - Is there an issue with CGColorGetComponents?

When I call CGColorGetComponents with the CGColor returned from a UIColor, it seems to work properly except with white ... I should be doing? See Question&Answers more detail:os...

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

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418 views

1 answer

iphone - Replace a character at a certain index in NSString

I'm looking for a way to replace a character at a certain index of a NSString. For example: myString = @" ... I achieve this? 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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449 views

1 answer

iphone - NSMutableArray of ClLocationCoordinate2D

I'm trying to create then retrieve an array of CLLocationCoordinate2D objects, but for some reason the array is ... be going wrong? Thanks! See Question&Answers more detail:os...

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

0 votes

455 views

1 answer

iphone - Dismissing multiple modal view controllers at once?

So have a stack with three view controllers where A is root, B is first modal view controller and C is ... help on this is greatly appriciated. See Question&Answers more detail:os...

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

0 votes

443 views

1 answer

iphone - vertically align text in a CATextLayer?

I am working on a CATextLayer that I want to use in both Mac and iOS. Can I control the vertical alignment of the ... but I can't make it work. See Question&Answers more detail:os...

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

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636 views

1 answer

iphone - Can I stop UIImageView Animation at last frame?

I have an animation using a UIImageView myAnimatedView.animationImages = myImages; myAnimatedView.animationDuration = 1; ... you 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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378 views

1 answer

iphone - how to generate crash report using code like crash report provided by Apple

i want to generate crash report for Symbolicate iOS Crash to View Crash Logs,so i want to get the crash report ... want to get the same report See Question&Answers more detail:os...

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

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372 views

1 answer

iphone - Are there examples of how to use UIPopoverController on iOS?

I've seen some demos where UIPopoverController is used and would like to use it in my apps. So does anyone ... type of a switch view function? See Question&Answers more detail:os...

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

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309 views

1 answer

iphone - Check URL validity

Can someone confirm that -checkResourceIsReachableAndReturnError: method of NSURL is working as expected. I have tried using ... .1. Thank you. See Question&Answers more detail:os...

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

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382 views

1 answer

iphone - Why was my application still rejected after excluding files from iCloud backup using this code?

I have added the following code to exclude files from iCloud backup, but my application was still rejected: - (BOOL) ... my mistake is in 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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371 views

1 answer

iphone - Figure out time by latitude/longitude?

Here's the deal. I have a latitude/longitude set of a location. I need to figure out what the current time ... lat/lon pair? 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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