第一种：
public Point getDisplayMetrics() {
DisplayMetrics dm = new DisplayMetrics();
dm = getApplicationContext().getResources().getDisplayMetrics();
int screenWidth = dm.widthPixels;
int screenHeight = dm.heightPixels;
return new Point(screenWidth ,screenHeight );
}
第二种：
- WindowManager windowManager = getWindowManager();
- Display display = windowManager.getDefaultDisplay();
- screenWidth = display.getWidth();
- screenHeight = display.getHeight();
- return new Point(screenWidth ,screenHeight );
- }