Iphone 将UIButton框架设置在UIImgeView的中心

这是我要在中心设置的代码

UIButton *videoImage = [[UIButton alloc]initWithFrame:CGRectMake((secondImageView.frame.size.width/2)-50,(secondImageView.frame.size.height/2)-50,50,50)];
videoImage.transform = CGAffineTransformMakeRotation(ang*(3.14/180));
[videoImage setBackgroundImage:[UIImage imageNamed:@"PlayButton.png"] forState:UIControlStateNormal];
[videoImage addTarget:self action:@selector(PlayMusicOnClickofButton:) forControlEvents:UIControlEventTouchUpInside];
[secondImageView addSubview:videoImage];
videoImage.tag  = k+1000;
secondImageView.userInteractionEnabled = YES;
[videoImage release];

我面临的问题是，当我改变按钮的方向时，它的位置会改变。它不会停留在中心。请帮忙

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谢谢

您需要处理这个问题。你所做的是正确的。当方向随着父视图的尺寸变化而变化时，需要对其进行调整。执行

willAnimateRotationInterfaceOrientation

delegate。看看这个-

- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation 
                                         duration:(NSTimeInterval)duration
{
    if(toInterfaceOrientation == UIInterfaceOrientationLandscapeLeft||toInterfaceOrientation == UIInterfaceOrientationLandscapeRight)
    {
        //handle how you want to show in landscape mode
    }
    else
    {
        //handle how you want to show in portrait mode
    }
}

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你需要处理这件事。你所做的是正确的。当方向随着父视图的尺寸变化而变化时，需要对其进行调整。执行

willAnimateRotationInterfaceOrientation

delegate。看看这个-

- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation 
                                         duration:(NSTimeInterval)duration
{
    if(toInterfaceOrientation == UIInterfaceOrientationLandscapeLeft||toInterfaceOrientation == UIInterfaceOrientationLandscapeRight)
    {
        //handle how you want to show in landscape mode
    }
    else
    {
        //handle how you want to show in portrait mode
    }
}

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其实你应该用这个方法

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation 
   {
         if(interfaceOrientation == UIInterfaceOrientationLandscapeLeft || interfaceOrientation == UIInterfaceOrientationLandscapeRight)
         {
                    //handle how you want to show in landscape mode
         }
         else
         {
                    //handle how you want to show in portrait mode
         }
         return YES; 
   }

---

其实你应该用这个方法

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation 
   {
         if(interfaceOrientation == UIInterfaceOrientationLandscapeLeft || interfaceOrientation == UIInterfaceOrientationLandscapeRight)
         {
                    //handle how you want to show in landscape mode
         }
         else
         {
                    //handle how you want to show in portrait mode
         }
         return YES; 
   }

---

你需要使用支柱和弹簧。检查uiview类的autoresizingMask属性。尝试使用videoImage.center=secondImageView.center我这样做了，但不起作用。您需要使用支柱和弹簧。检查uiview类的autoresizingMask属性。尝试使用videoImage.center=secondImageView.center我这样做了，但不起作用。我的imageview以特定角度旋转，现在我必须在该视图中添加按钮，该按钮也以相同角度旋转。我如何做到这一点？我没有更改我的图像的方向device@Srikar这个问题与旋转，而不是方向我的图像视图是以特定的角度旋转的，现在我必须在该视图中添加按钮，该按钮也以相同的角度旋转。我如何做到这一点？我没有改变图像的方向device@Srikar这个问题与轮换有关，而不是orientation@dimplepanchal这个问题与轮换有关，不orientation@dimplepanchal这个问题与旋转有关，而不是方向