How to get the X Y coordinates and pixel size of a

问题:

Given a TextView, is it possible to know at runtime the X and Y coordinates of where it is drawn? Is it also possible to know the size (width/length) in pixels?

回答1:

There are getLeft(), getTop(), getWidth(), getHeight() methods for a view, it works for textView too. for more information , see the following link...

getLeft() and getTop() will return you the starting x,y co-ordinates.

http://developer.android.com/reference/android/view/View.html

回答2:

Coordinates relative to parent

int x = textView.getLeft();
int y = textView.getTop();

Absolute coordinates

int[] location = new int[2];
textView.getLocationOnScreen(location);
int x = location[0];
int y = location[1];

See this answer for more.

Pixel size

int width = textView.getWidth();
int height = textView.getHeight();

Notes

• If you are getting (0,0) it could be because you are getting the relative coordinates related to the parent layout (and it is sitting in the top left corner of the parent). It could also be because you are trying to get the coordinates before the view has been laid out (for example, in onCreate()).