Android获取屏幕宽度的4种方法，

方法一：

    WindowManager wm = (WindowManager) this            .getSystemService(Context.WINDOW_SERVICE);    int width = wm.getDefaultDisplay().getWidth();    int height = wm.getDefaultDisplay().getHeight();

方法二：

    WindowManager wm1 = this.getWindowManager();    int width1 = wm1.getDefaultDisplay().getWidth();    int height1 = wm1.getDefaultDisplay().getHeight();

方法一与方法二获取屏幕宽度的方法类似，只是获取WindowManager 对象时的途径不同。

方法三：

    WindowManager manager = this.getWindowManager();    DisplayMetrics outMetrics = new DisplayMetrics();    manager.getDefaultDisplay().getMetrics(outMetrics);    int width2 = outMetrics.widthPixels;    int height2 = outMetrics.heightPixels;

方法四：

    Resources resources = this.getResources();    DisplayMetrics dm = resources.getDisplayMetrics();    float density1 = dm.density;    int width3 = dm.widthPixels;    int height3 = dm.heightPixels;