ViewController 方向改变

Question

当 iPhone 将方向更改为横向时，我正在推送 ViewController，并且在更改 ViewController 的方向时遇到问题。

我使用了那个代码：

    - (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
Storage *strg = [Storage sharedStorage];

if ([strg.orient intValue] == 2) 
{
    [[UIApplication sharedApplication] setStatusBarOrientation:
     UIInterfaceOrientationLandscapeRight];

    UIScreen *screen = [UIScreen mainScreen];
    CGFloat screenWidth = screen.bounds.size.width;
    CGFloat screenHeight = screen.bounds.size.height;
    UIView *navView = [[self navigationController] view];
    navView.bounds = CGRectMake(0, 0, screenHeight, screenWidth);
    navView.transform = CGAffineTransformIdentity;
    navView.transform = CGAffineTransformMakeRotation(1.57079633);
    navView.center = CGPointMake(screenWidth/2.0, screenHeight/2.0);
    [UIView commitAnimations];
}
if ([strg.orient intValue] == 1)
{
    [[UIApplication sharedApplication] setStatusBarOrientation:
     UIInterfaceOrientationLandscapeLeft];

    UIScreen *screen = [UIScreen mainScreen];
    CGFloat screenWidth = screen.bounds.size.width;
    CGFloat screenHeight = screen.bounds.size.height;
    UIView *navView = [[self navigationController] view];
    navView.bounds = CGRectMake(0, 0, screenHeight, screenWidth);
    navView.transform = CGAffineTransformIdentity;
    navView.transform = CGAffineTransformMakeRotation(4.71238898);
    navView.center = CGPointMake(screenWidth/2.0, screenHeight/2.0);
    [UIView commitAnimations];
}
}

结果不一致；有时它进入正确的方向，有时它是颠倒的。

当我从 LandcapeRight 到 LandscapeLeft 海峡时（反之亦然），它工作正常，只有当我进入纵向模式时才会出现问题。

任何想法我做错了什么？

Answer 1

如果您确实在响应设备方向更改，那么您可能不应该使用 setStatusBarOrientation。我认为您最好使用 shouldAutorotateToInterfaceOrientation 和 deviceDidRotateSelector 通知让您的视图控制器旋转到支持的方向。

[[NSNotificationCenter defaultCenter] addObserver: self selector: @selector(deviceDidRotateSelector:) name: UIDeviceOrientationDidChangeNotification object: nil];

-(void)deviceDidRotateSelector:(NSNotification*) notification {
// respond to rotation here
}


- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
//Return YES for supported orientations
return YES;
}