Java tutorial
//package com.java2s; import android.content.Context; import android.content.pm.PackageManager; import android.content.pm.PackageManager.NameNotFoundException; public class Main { public static boolean isInstalled(Context context, String packageName) { PackageManager manager = context.getPackageManager(); try { manager.getPackageInfo(packageName, PackageManager.GET_ACTIVITIES); return true; } catch (NameNotFoundException e) { return false; } } }