Androidの携帯電話の画面の幅の高さを取得する5つの方法

public class DisplaySizeUtil {

    public static Point getDisplaySizeInfo(Context context) {
        WindowManager manager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        Display display = manager.getDefaultDisplay();
        Point sizePoint = new Point();
        display.getSize(sizePoint);
        int width1 = sizePoint.x;
        int height1 = sizePoint.y;

        int width2 = manager.getDefaultDisplay().getWidth();
        int height2 = manager.getDefaultDisplay().getHeight();

        DisplayMetrics outMetrics = new DisplayMetrics();
        manager.getDefaultDisplay().getMetrics(outMetrics);
        int width3 = outMetrics.widthPixels;
        int height3 = outMetrics.heightPixels;


        Resources resources = context.getResources();
        DisplayMetrics dm = resources.getDisplayMetrics();
        float density = dm.density;
        int width4 = dm.widthPixels;
        int height4 = dm.heightPixels;

        Activity activity = new Activity();
        WindowManager wm1 = activity.getWindowManager();
        int width5 = wm1.getDefaultDisplay().getWidth();
        int height5 = wm1.getDefaultDisplay().getHeight();

        return sizePoint;
    }

}