获取屏幕分辨率

第一种 不含状态栏

public int getWindowWidth(){
        WindowManager wm = (WindowManager) (this.getSystemService(Context.WINDOW_SERVICE));
        DisplayMetrics dm = new DisplayMetrics();
        assert wm != null;
        wm.getDefaultDisplay().getMetrics(dm);
        return dm.widthPixels;
    }

第二种，实际分辨率

public int getWindowWidth2(){
        DisplayMetrics metrics =new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getRealMetrics(metrics);
        int width = metrics.widthPixels;
        int height = metrics.heightPixels;
        System.out.println("===屏幕宽width = "+width);
        System.out.println("===屏幕宽height = "+height);
        return width;
    }