Java tutorial
//package com.java2s; import android.content.Context; import android.content.Intent; import android.content.pm.PackageManager; import android.content.pm.ResolveInfo; import java.util.List; public class Main { protected static boolean isAvailable(Intent intent, Context context) { List<ResolveInfo> infos = context.getPackageManager().queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY); if (infos.size() > 0) return true; else return false; } }