自定义警报视图不会随着设备旋转而旋转

Question

实现了自定义警报视图

我从http://iphonedevelopment.blogspot.com /2010/05/custom-alert-views.html

但我想在设备方向改变时使自定义警报视图旋转。当我第一次在 iPhone 模拟器的纵向方向运行该应用程序时，自定义警报视图方向是横向，但是当我将设备旋转到左侧横向时，自定义警报视图方向是横向。以多种方式旋转设备后，我发现自定义警报方向遵循主页按钮的位置。

我实现了这几种方法：

-(void) willAnimateSecondHalfOfRotationFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation duration:(NSTimeInterval)duration {
NSLog(@"kkksksksk");    

}

-(void) willAnimateFirstHalfOfRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration{
 NSLog(@"aaa"); 

}

-(void) willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration{
 NSLog(@"bbb");

}

-(void) willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration{
 NSLog(@"bbb");

}

-(void) willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration{
NSLog(@"ccc");

}

-(BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation{
return YES;
NSLog(@"shouldAutorotateToInterfaceOrientation");

}，

但没有人被叫到... 谁能帮我解决为什么自定义警报视图没有像我想要的那样旋转？

更新 ： 我实现了这样的 viewWillAppear 方法

-(void)viewWillAppear:(BOOL)animated {

UIInterfaceOrientation toOrientation = self.interfaceOrientation;
if(toOrientation == UIInterfaceOrientationPortrait){
    CGAffineTransform affine = CGAffineTransformMakeRotation (M_PI * 180 / 180.0f);
    NSLog(@"vwa : portrait upside down");

    [self.alertView setTransform:affine];
    [self.backgroundView setTransform:affine];

    //[self.view setTransform:affine];
    self.view.center = CGPointMake(160, 240);
    NSLog(@"affine : %f", affine);

}else if(toOrientation == UIInterfaceOrientationPortraitUpsideDown){
    CGAffineTransform affine = CGAffineTransformMakeRotation (0.0);

    NSLog(@"vwa : Portrait ");

    [self.alertView setTransform:affine];
    [self.backgroundView setTransform:affine];
    self.view.center = CGPointMake(160, 240);
    NSLog(@"affine : %f", affine);
}else if(toOrientation == UIInterfaceOrientationLandscapeLeft){
    CGAffineTransform affine = CGAffineTransformMakeRotation (M_PI * 270 / 180.0f);

    [self.alertView setTransform:affine];
    [self.backgroundView setTransform:affine];
    self.view.center = CGPointMake(160, 240);

    NSLog(@"vwa : landscpae left");

    NSLog(@"affine : %f", affine);
}else{
    CGAffineTransform affine = CGAffineTransformMakeRotation ( M_PI * 90 / 180.0f);
    [self.alertView setTransform:affine];
    [self.backgroundView setTransform:affine];
    self.view.center = CGPointMake(160, 240);

    NSLog(@"vwa : landscape right");
    NSLog(@"affine : %f", affine);
}

}

但条件只是在第一次启动应用程序时满足，之后，即使我多次旋转设备，也没有条件和语句被调用

Answer 1

完成了...
请参阅关于 iPhone 的方向
寻找答案:)

Answer 2

UIView无法接受UIViewController的委托消息。因此，您应该注册为观察者以接收 UIDeviceOrientationDidChangeNotification 通知。