cocoa-touch

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How do you know if a task executes in the background when your app sleeps?

With Objective C memory management, we have the general rule that if you create an object with any of the following techniques, you need to release the object later.[详细]

2023-04-12 05:28 分类：问答
iOS app can't be launched on iOS 5 [closed]

Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow.[详细]

2023-04-12 04:18 分类：问答
Nib-created view retaining file's owner prevents deallocation of UIViewController

I have a view controller that I want to be released (and then possibly reallocated later in the application).The problem is that its view se开发者_运维百科ems to hold a strong reference to it as shown[详细]

2023-04-12 03:48 分类：问答
How to link Device Frameworks dynamically in iOS app?

Now My app is using Assets library Frameworks which is only available on iOS 4.0 and later for multi-choosing photos, but I want my app runs on devices with iOS 3.2.[详细]

2023-04-12 03:21 分类：问答
setNeedsLayout in UIView subviews

I have a UIViewController and in willRotateToInterfaceOrientation, i am calling [self view] setNeedsLayout];[详细]

2023-04-12 03:21 分类：问答
How can I hide navigation bar through CAAnimation?

Actually For show/hide I am using UIView Animation. And Simple methods like animated : YES/NO. But it does not give me smooth response..[详细]

2023-04-12 03:18 分类：问答
Edge detetction in iOS application

I have a requirement to implement a functionality to draw edge of a object in a given image. So, when the user taps on a object in the Image ,it should draw its edge. For Eg:if I have a Image which ha[详细]

2023-04-12 02:37 分类：问答
Issue with CGRectMake for Button Size

I am having an issue with resizing my button with CGRectMake. As you can see below, it should be working, but it doesn\'t change at all.[详细]

2023-04-12 02:02 分类：问答
“EXC_BAD_ACCESS” in Xcode

while run iphone simulation, I show the error for \"EXC_BAD_ACCESS\" in Xcode code is below : Test.h @interface Test : UIViewController[详细]

2023-04-12 01:38 分类：问答
Can i pass the parameter to clickedButtonAtIndex that is iphone method?

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex { .... } I\'m developing iphone app by Xcode.[详细]

2023-04-12 01:24 分类：问答