问题
Could somebody show me how to get the x and y position of a UIButton in cocoa?
The button moves on the screen when clicked and I want to use it's current position to position another UIBUtton relative to it.
I've tried using
CGRect rect=[myButton imageRectForContentRect];
The compiler tells me that myButton may not respond to imageRectForContentRect.
回答1:
Use
myButton.frame
Specifically for position, use myButton.frame.origin.x and myButton.frame.origin.y. That would be the top left corner. This is the easiest solution for finding a button's position.
回答2:
CGPoint position = myButton.frame.origin;
This works for any UIView.
The compiler is right (as it's prone to be): there is no method called imageRectForContentRect. There is, however, imageRectForContentRect: which takes a CGRect as its argument. You don't have to use it to get the position.
来源：https://stackoverflow.com/questions/2319642/how-to-get-the-x-and-y-position-of-a-ui-button-iphone