Java tutorial
//package com.java2s; /* * Copyright (C) 2015 The CyanogenMod Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License */ import android.content.Context; import android.content.pm.PackageManager; import android.content.pm.PackageManager.NameNotFoundException; public class Main { private static boolean isV4AInstalled(Context context) { PackageManager pm = context.getPackageManager(); try { pm.getPackageInfo("com.vipercn.viper4android_v2", PackageManager.GET_ACTIVITIES); return true; } catch (NameNotFoundException e) { return false; } } }