Android开发中获取屏幕的宽和高

public static int DEVICE_WIDTH=0;
public static int DEVICE_HEIGHT=0;

//获取设备的宽高
getActivityWidthAndHeight();

    public void getActivityWidthAndHeight(){
        DisplayMetrics dm = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(dm);
        DEVICE_WIDTH=dm.widthPixels;
        DEVICE_HEIGHT=dm.heightPixels;
    }