Change size of imageview, sprite, label, etc. depending on screen size iOS

Question

在iPhone 6上创建UIImageViews ，我遇到了这个问题，它非常适合，但在4s上，它非常大！有没有办法在ViewDidLoad添加一些逻辑来更改px大小，无论是图片，图片，标签等。

Answer 1

只需使用自动布局和尺寸类（您可以在IB中访问它们，然后为iPhone选择sizi类）

Answer 2

There are a few ways to do this, you could use auto-layout, or you can take a different route. If you chose not to take auto-layout, I would recommend do this, however the down side is that there is a lot of programming.

CGRect screenRect = [[UIScreen mainScreen] bounds]; 
CGFloat screenHeight = screenRect.size.height;

if (screenHeight == 480) {
    // do iPhone 4s stuff
} else if (screenHeight == 568) {
    // do iPhone 5, 5s, 5c stuff
} else if (screenHeight == 667) {
    // do iPhone 6 stuff
} else if (screenHeight == 736) {
    //do iPhone 6 plus stuff
}