//获取屏幕的宽度
WindowManager wm=(WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
DisplayMetrics outMetrics=new DisplayMetrics();
wm.getDefaultDisplay().getMetrics(outMetrics);
mScreenWidth=outMetrics.widthPixels; // 该mScreenWidth便是手机屏幕的宽度
WindowManager wm=(WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
DisplayMetrics outMetrics=new DisplayMetrics();
wm.getDefaultDisplay().getMetrics(outMetrics);
mScreenWidth=outMetrics.widthPixels; // 该mScreenWidth便是手机屏幕的宽度