UIImageView 旋转后不居中

发布于 2024-10-07 10:05:33 字数 292 浏览 1 评论 0原文

我手动将 UIImageView 添加到我的 UIView 并将其居中，这工作正常，但旋转设备后，UIImageView 不再居中（它移至左下角）。我该如何解决这个问题？

logoView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"wi-fi-sticker.png"]];
logoView.center = self.view.center;
[self.view addSubview:logoView];

问候，萨沙

原文

I manually add an UIImageView to my UIView and center it, this works fine, but after rotating the device, the UIImageView isn't centered anymore (it's moved to the lower left). How can I fix this?

logoView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"wi-fi-sticker.png"]];
logoView.center = self.view.center;
[self.view addSubview:logoView];

Regards,
Sascha

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一桥轻雨一伞开 2024-10-14 10:05:33

每次使用这样的东西我都能正确居中

-(void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration:{
       CGRect screen = [[UIScreen mainScreen] bounds];
       float pos_y, pos_x;
       pos_y = UIDeviceOrientationIsLandscape(toInterfaceOrientation) ? screen.size.width/2  : screen.size.height/2;
       pos_x = UIDeviceOrientationIsLandscape(toInterfaceOrientation) ? screen.size.height/2 : screen.size.width/2;

       myImageView.center = CGPointMake(pos_x, pos_y);
}

I was able to center mine correctly every time using something like this

-(void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration:{
       CGRect screen = [[UIScreen mainScreen] bounds];
       float pos_y, pos_x;
       pos_y = UIDeviceOrientationIsLandscape(toInterfaceOrientation) ? screen.size.width/2  : screen.size.height/2;
       pos_x = UIDeviceOrientationIsLandscape(toInterfaceOrientation) ? screen.size.height/2 : screen.size.width/2;

       myImageView.center = CGPointMake(pos_x, pos_y);
}

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