如何取得一个 View 在屏幕中上的 Rect

/**
 * Get the boundary of a view in screen coordinates.
 * 类似 Windows SDK 中的 GetWindowRect + ClientToScreen
 * @param v
 * @param r The result.
 */
private void getRectInScreen(View v, Rect r) {
final int w = v.getWidth();
final int h = v.getHeight();

r.left = v.getLeft();
r.top = v.getTop();
r.right = r.left + w;
r.bottom = r.top + h;

ViewParent p = v.getParent();
while(p instanceof View) {
v = (View)p;
p = v.getParent();

r.left += v.getLeft();
r.top += v.getTop();
r.right = r.left + w;
r.bottom = r.top + h;
}

}

http://blog.csdn.net/uoyevoli/article/details/4899211