1 /* 2 * Copyright (C) 2011 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.net; 18 19 import android.content.Context; 20 import android.content.pm.ApplicationInfo; 21 import android.content.pm.PackageInfo; 22 import android.content.pm.PackageManager; 23 import android.content.pm.PackageManager.NameNotFoundException; 24 import android.content.pm.UserInfo; 25 import android.content.res.Resources; 26 import android.graphics.drawable.Drawable; 27 import android.net.ConnectivityManager; 28 import android.net.TrafficStats; 29 import android.os.UserManager; 30 import android.text.TextUtils; 31 import android.util.SparseArray; 32 33 import com.android.settings.R; 34 import com.android.settings.Utils; 35 import com.android.settings.users.UserUtils; 36 37 /** 38 * Return details about a specific UID, handling special cases like 39 * {@link TrafficStats#UID_TETHERING} and {@link UserInfo}. 40 */ 41 public class UidDetailProvider { 42 private final Context mContext; 43 private final SparseArray<UidDetail> mUidDetailCache; 44 buildKeyForUser(int userHandle)45 public static int buildKeyForUser(int userHandle) { 46 return -(2000 + userHandle); 47 } 48 UidDetailProvider(Context context)49 public UidDetailProvider(Context context) { 50 mContext = context.getApplicationContext(); 51 mUidDetailCache = new SparseArray<UidDetail>(); 52 } 53 clearCache()54 public void clearCache() { 55 synchronized (mUidDetailCache) { 56 mUidDetailCache.clear(); 57 } 58 } 59 60 /** 61 * Resolve best descriptive label for the given UID. 62 */ getUidDetail(int uid, boolean blocking)63 public UidDetail getUidDetail(int uid, boolean blocking) { 64 UidDetail detail; 65 66 synchronized (mUidDetailCache) { 67 detail = mUidDetailCache.get(uid); 68 } 69 70 if (detail != null) { 71 return detail; 72 } else if (!blocking) { 73 return null; 74 } 75 76 detail = buildUidDetail(uid); 77 78 synchronized (mUidDetailCache) { 79 mUidDetailCache.put(uid, detail); 80 } 81 82 return detail; 83 } 84 85 /** 86 * Build {@link UidDetail} object, blocking until all {@link Drawable} 87 * lookup is finished. 88 */ buildUidDetail(int uid)89 private UidDetail buildUidDetail(int uid) { 90 final Resources res = mContext.getResources(); 91 final PackageManager pm = mContext.getPackageManager(); 92 93 final UidDetail detail = new UidDetail(); 94 detail.label = pm.getNameForUid(uid); 95 detail.icon = pm.getDefaultActivityIcon(); 96 97 // handle special case labels 98 switch (uid) { 99 case android.os.Process.SYSTEM_UID: 100 detail.label = res.getString(R.string.process_kernel_label); 101 detail.icon = pm.getDefaultActivityIcon(); 102 return detail; 103 case TrafficStats.UID_REMOVED: 104 detail.label = res.getString(UserManager.supportsMultipleUsers() 105 ? R.string.data_usage_uninstalled_apps_users 106 : R.string.data_usage_uninstalled_apps); 107 detail.icon = pm.getDefaultActivityIcon(); 108 return detail; 109 case TrafficStats.UID_TETHERING: 110 final ConnectivityManager cm = (ConnectivityManager) mContext.getSystemService( 111 Context.CONNECTIVITY_SERVICE); 112 detail.label = res.getString(Utils.getTetheringLabel(cm)); 113 detail.icon = pm.getDefaultActivityIcon(); 114 return detail; 115 } 116 117 // Handle keys that are actually user handles 118 if (uid <= -2000) { 119 final int userHandle = (-uid) - 2000; 120 final UserManager um = (UserManager) mContext.getSystemService(Context.USER_SERVICE); 121 final UserInfo info = um.getUserInfo(userHandle); 122 if (info != null) { 123 detail.label = res.getString(R.string.running_process_item_user_label, info.name); 124 detail.icon = UserUtils.getUserIcon(um, info, res); 125 return detail; 126 } 127 } 128 129 // otherwise fall back to using packagemanager labels 130 final String[] packageNames = pm.getPackagesForUid(uid); 131 final int length = packageNames != null ? packageNames.length : 0; 132 try { 133 if (length == 1) { 134 final ApplicationInfo info = pm.getApplicationInfo(packageNames[0], 0); 135 detail.label = info.loadLabel(pm).toString(); 136 detail.icon = info.loadIcon(pm); 137 } else if (length > 1) { 138 detail.detailLabels = new CharSequence[length]; 139 for (int i = 0; i < length; i++) { 140 final String packageName = packageNames[i]; 141 final PackageInfo packageInfo = pm.getPackageInfo(packageName, 0); 142 final ApplicationInfo appInfo = pm.getApplicationInfo(packageName, 0); 143 144 detail.detailLabels[i] = appInfo.loadLabel(pm).toString(); 145 if (packageInfo.sharedUserLabel != 0) { 146 detail.label = pm.getText(packageName, packageInfo.sharedUserLabel, 147 packageInfo.applicationInfo).toString(); 148 detail.icon = appInfo.loadIcon(pm); 149 } 150 } 151 } 152 } catch (NameNotFoundException e) { 153 } 154 155 if (TextUtils.isEmpty(detail.label)) { 156 detail.label = Integer.toString(uid); 157 } 158 159 return detail; 160 } 161 } 162