Here you can find the source of getDisplayWidth(Context context)
public static int getDisplayWidth(Context context)
//package com.java2s; //License from project: Open Source License import android.content.Context; import android.util.DisplayMetrics; import android.view.WindowManager; public class Main { private static int displayWidth = 0; public static int getDisplayWidth(Context context) { if (displayWidth <= 0) { WindowManager wm = (WindowManager) context .getApplicationContext().getSystemService( Context.WINDOW_SERVICE); DisplayMetrics dm = new DisplayMetrics(); wm.getDefaultDisplay().getMetrics(dm); displayWidth = dm.widthPixels; }//from w ww . j a v a2 s .com return displayWidth; } }