@Override
public void onWindowFocusChanged(boolean hasFocus) {
super.onWindowFocusChanged(hasFocus);
Rect frame = new Rect();
getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
int statusBarHeight = frame.top;
// 获取标题栏高度
Window window = getWindow();
int contentViewTop = getWindow()
.findViewById(Window.ID_ANDROID_CONTENT).getTop();
// statusBarHeight是上面所求的状态栏的高度
titleBarHeight = contentViewTop - statusBarHeight;
Log.i("test", "statusBarHeight=" + statusBarHeight + " contentViewTop="
+ contentViewTop + " titleBarHeight=" + titleBarHeight);
}