1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.system.helpers; 18 19 import android.app.Instrumentation; 20 import android.content.pm.PackageManager; 21 import android.os.SystemClock; 22 import android.system.helpers.CommandsHelper; 23 24 /** 25 * Implement common helper methods for package management. 26 * eg. Delete package data. 27 */ 28 public class PackageHelper { 29 public final int TIMEOUT = 500; 30 public static PackageHelper sInstance = null; 31 private Instrumentation mInstrumentation = null; 32 private CommandsHelper cmdHelper = null; 33 private PackageManager mPackageManager = null; 34 PackageHelper(Instrumentation instrumentation)35 public PackageHelper(Instrumentation instrumentation) { 36 mInstrumentation = instrumentation; 37 cmdHelper = CommandsHelper.getInstance(instrumentation); 38 mPackageManager = instrumentation.getTargetContext().getPackageManager(); 39 } 40 getInstance(Instrumentation instrumentation)41 public static PackageHelper getInstance(Instrumentation instrumentation) { 42 if (sInstance == null) { 43 sInstance = new PackageHelper(instrumentation); 44 } 45 return sInstance; 46 } 47 48 /** 49 * Deletes all data associated with the package. 50 * @param packageName package name 51 */ cleanPackage(String packageName)52 public void cleanPackage(String packageName) { 53 cmdHelper.executeShellCommand(String.format("pm clear %s", packageName)); 54 SystemClock.sleep(2 * TIMEOUT); 55 } 56 57 /** 58 * Check if certain package is installed on the device. 59 * @param packageName package name 60 * @return true/false 61 */ isPackageInstalled(String packageName)62 public Boolean isPackageInstalled(String packageName) { 63 try { 64 mPackageManager.getPackageInfo(packageName, PackageManager.GET_ACTIVITIES); 65 return true; 66 } catch (PackageManager.NameNotFoundException e) { 67 return false; 68 } 69 } 70 } 71