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 }
原文：http://www.cnblogs.com/sunshine-anycall/p/4299896.html