如何在iOS5中获取默认的LandscapeLeft方向？

对不起，如果这个问题是重复的，但我找不到相同的解决scheme。 在iOS6中，如果我想为一个UIViewController设置默认方向，我只需使用：

- (BOOL)shouldAutorotate { return YES; } - (NSUInteger)supportedInterfaceOrientations{ return UIInterfaceOrientationMaskLandscapeLeft; } 

但是如何在iOS5中做同样的事情，我testing了两个：

 - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation { return (toInterfaceOrientation == UIInterfaceOrientationLandscapeLeft);//not default } and - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation { return (toInterfaceOrientation == UIInterfaceOrientationMaskLandscapeLeft);// = return NO; } 

但默认的方向总是肖像。任何build议？

Answer 1

调用下面的方法，你要检查orientation.happy编码的状态:-)

 - (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration { [self CheckForViewForOrientation:toInterfaceOrientation]; } - (void) CheckForViewForOrientation:(UIInterfaceOrientation)orientation { if (orientation == UIInterfaceOrientationPortrait || orientation == UIInterfaceOrientationPortraitUpsideDown) { //Ur lable portrait view } else if (orientation == UIInterfaceOrientationLandscapeLeft || orientation == UIInterfaceOrientationLandscapeRight) { //Ur lable for landscape view } } 

Answer 2

如果您想为整个应用程序实现此目的，请在app.plist文件中更改支持的方向UISupportedInterfaceOrientations

Answer 3

 - (BOOL)shouldAutorotate { UIInterfaceOrientation orientation = [[UIDevice currentDevice] orientation]; if (orientation==UIInterfaceOrientationPortrait) { // do some } return YES; } 

包括同时支持5和6的两种方法

Answer 4

你需要提供

 - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { UIInterfaceOrientationIsLandscape(interfaceOrientation); } 

为那个单一的视图控制器。