autolayout之后获取uiview的frame

这个只要一行代码就搞定了。详细请看：

In order to get the right frame/bounds of your UIImageView after resizing, you need first ask auto-layout to update that layout using [yourImageView layoutIfNeeded]. that will solve your constraints and update your yourImage.bounds. [myImageView layoutIfNeeded]; NSLog(@"w: %f, h: %f", myImageView.bounds.size.width, myImageView.bounds.size.height);

就一行代码啊！

 

或者在这个方法中获取frame：

- (void)viewDidLayoutSubviews {
// VC just laid off its views
}

 

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