我们如何以编程方式获取UIImageView的坐标？

Question

I would like to get the coordinates of an UIImageView programmatically. How do I do this?

For example I have a square. I want to get the coordinates of all the corners. How must i proceed?

NSLog("%f", ImageView.frame.origin.x);
NSLog("%f", ImageView.frame.origin.y);

I get the topleft coordinate of the square.

I must say that the square (imageview) rotates and that's why I must get it's coordinates.

Answer 1

The coordinates in whose coordinate space?

Each UIView has its own coordinate space. You can refer to a view's size in its own coordinate space by asking for its bounds .

A view's size and position in its parent view is called its frame . In your example, you're asking for the image view's top left corner in its parent view's coordinate space.

If that's what you want to do, then try these:

frame.origin.x
frame.origin.y
frame.size.width
frame.size.height

By adding those together you can get any coordinate: for example, the x coordinate of the top right would be

frame.origin.x + frame.size.width