IOS 5.1中的定位问题？

Question

我已经在IOS 6.0中实现了示例代码，并具有方向支持功能，但可以正常运行，但如果我不支持以ipad 1（IOS 5.1）方向运行相同的应用程序，我知道IOS 6.0在iOS 5.1中已弃用某些方法如何解决此问题？

Answer 1

You need to implement the old rotation methods in you view controllers to support iOS 5 or lower rotation.

Yes the methods have been deprecated but are still need by the older versions of iOS.

Answer 2

For iOS 6+ use these methods

- (NSUInteger)supportedInterfaceOrientations {

    return UIInterfaceOrientationMaskPortrait;
}

- (BOOL)shouldAutorotate {

    return UIInterfaceOrientationMaskPortrait;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
    return UIInterfaceOrientationPortrait;
}

and for iOS 5.0 and all previous use this

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{  
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

Answer 3

Use the following code in .m file.

// Override to allow orientations other than the default portrait orientation.

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {

if(interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown)  {
           return NO;
}
else {
    return YES;
}

}

This works in iOS 5.1,6.1.3 and 7.0.2.