您可以这样管理 Orientation:-
-(BOOL)shouldAutorotate
{
return YES;
}
并每次检查ViewWillApear
设备方向,例如:-
- (void)willRotateToOrientation:(UIInterfaceOrientation)newOrientation {
if (UIDeviceOrientationIsLandscape([UIDevice currentDevice].orientation))
{
if (newOrientation == UIInterfaceOrientationLandscapeLeft || newOrientation == UIInterfaceOrientationLandscapeRight) {
//set your landscap View Frame
[self supportedInterfaceOrientations];
}
}
else if (UIDeviceOrientationIsPortrait([UIDevice currentDevice].orientation))
{
if(newOrientation == UIInterfaceOrientationPortrait || newOrientation == UIInterfaceOrientationPortraitUpsideDown){
//set your Potrait View Frame
[self supportedInterfaceOrientations];
}
}
// Handle rotation
}
-(void)viewWillAppear:(BOOL)animated
{
[self willRotateToOrientation:[[UIDevice currentDevice] orientation]];
[super viewWillAppear:YES];
}
更新
很可能人们使用下面这样的检查设备orientation
将这条线放入ViewWillApear
:-
[[UIApplication sharedApplication] statusBarOrientation];
[[UIDevice currentDevice] orientation];
[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(deviceRotated:) name:UIDeviceOrientationDidChangeNotification object:nil];
和
-(void)deviceRotated:(NSNotification*)notification
{
UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
if(orientation == UIInterfaceOrientationLandscapeLeft || orientation == UIInterfaceOrientationLandscapeRight)
{
//Do your stuff for landscap
}
else if(orientation == UIInterfaceOrientationPortrait || toInterfaceOrientation == UIInterfaceOrientationPortraitUpsideDown)
{
//Do your stuff for potrait
}
}