1 /* 2 * Copyright (C) 2017 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 com.android.settings.applications; 18 19 import android.content.Context; 20 import android.content.Intent; 21 import android.content.pm.ApplicationInfo; 22 import android.content.pm.InstallSourceInfo; 23 import android.content.pm.PackageManager.NameNotFoundException; 24 import android.content.pm.ResolveInfo; 25 import android.util.Log; 26 27 // This class provides methods that help dealing with app stores. 28 public class AppStoreUtil { 29 private static final String LOG_TAG = "AppStoreUtil"; 30 resolveIntent(Context context, Intent i)31 private static Intent resolveIntent(Context context, Intent i) { 32 ResolveInfo result = context.getPackageManager().resolveActivity(i, 0); 33 return result != null ? new Intent(i.getAction()) 34 .setClassName(result.activityInfo.packageName, result.activityInfo.name) : null; 35 } 36 37 // Returns the package name of the app that we consider to be the user-visible 'installer' 38 // of given packageName, if one is available. getInstallerPackageName(Context context, String packageName)39 public static String getInstallerPackageName(Context context, String packageName) { 40 String installerPackageName; 41 try { 42 InstallSourceInfo source = 43 context.getPackageManager().getInstallSourceInfo(packageName); 44 // By default, use the installing package name. 45 installerPackageName = source.getInstallingPackageName(); 46 // Use the recorded originating package name only if the initiating package is a system 47 // app (eg. Package Installer). The originating package is not verified by the platform, 48 // so we choose to ignore this when supplied by a non-system app. 49 String originatingPackageName = source.getOriginatingPackageName(); 50 String initiatingPackageName = source.getInitiatingPackageName(); 51 if (originatingPackageName != null && initiatingPackageName != null) { 52 ApplicationInfo ai = context.getPackageManager().getApplicationInfo( 53 initiatingPackageName, 0); 54 if ((ai.flags & ApplicationInfo.FLAG_SYSTEM) != 0) { 55 installerPackageName = originatingPackageName; 56 } 57 } 58 } catch (NameNotFoundException e) { 59 Log.e(LOG_TAG, "Exception while retrieving the package installer of " + packageName, e); 60 installerPackageName = null; 61 } 62 return installerPackageName; 63 } 64 65 // Returns a link to the installer app store for a given package name. getAppStoreLink(Context context, String installerPackageName, String packageName)66 public static Intent getAppStoreLink(Context context, String installerPackageName, 67 String packageName) { 68 Intent intent = new Intent(Intent.ACTION_SHOW_APP_INFO) 69 .setPackage(installerPackageName); 70 final Intent result = resolveIntent(context, intent); 71 if (result != null) { 72 result.putExtra(Intent.EXTRA_PACKAGE_NAME, packageName); 73 return result; 74 } 75 return null; 76 } 77 78 // Convenience method that looks up the installerPackageName for you. getAppStoreLink(Context context, String packageName)79 public static Intent getAppStoreLink(Context context, String packageName) { 80 String installerPackageName = getInstallerPackageName(context, packageName); 81 return getAppStoreLink(context, installerPackageName, packageName); 82 } 83 } 84