| /* |
| * Copyright (C) 2015 The Android 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. |
| */ |
| package com.android.car.pm; |
| |
| import android.annotation.Nullable; |
| import android.content.Context; |
| import android.content.pm.ActivityInfo; |
| import android.content.pm.PackageInfo; |
| import android.content.pm.PackageManager; |
| import android.content.pm.PackageManager.NameNotFoundException; |
| import android.os.Bundle; |
| import android.util.Log; |
| |
| import com.android.car.CarLog; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Read App meta data and look for Distraction Optimization(DO) tags. |
| * An app can tag a distraction optimized activity to be DO by adding the following meta-data |
| * to that <activity> element: |
| * |
| * <pre>{@code |
| * <activity> |
| * <meta-data android:name="distractionOptimized" android:value="true"/> |
| * </activity> |
| * }</pre> |
| * |
| */ |
| public class CarAppMetadataReader { |
| /** Name of the meta-data attribute of the Activity that denotes distraction optimized */ |
| private static final String DO_METADATA_ATTRIBUTE = "distractionOptimized"; |
| |
| /** |
| * Parses the given package and returns Distraction Optimized information, if present. |
| * |
| * @return Array of DO activity names in the given package |
| */ |
| @Nullable |
| public static String[] findDistractionOptimizedActivitiesAsUser(Context context, |
| String packageName, int userId) throws NameNotFoundException { |
| final PackageManager pm = context.getPackageManager(); |
| |
| // Check if any of the activities in the package are DO by checking all the |
| // <activity> elements. |
| PackageInfo pkgInfo = |
| pm.getPackageInfoAsUser( |
| packageName, PackageManager.GET_ACTIVITIES |
| | PackageManager.GET_META_DATA |
| | PackageManager.MATCH_DIRECT_BOOT_AWARE |
| | PackageManager.MATCH_DIRECT_BOOT_UNAWARE, |
| userId); |
| if (pkgInfo == null) { |
| return null; |
| } |
| |
| ActivityInfo[] activities = pkgInfo.activities; |
| if (activities == null) { |
| if (Log.isLoggable(CarLog.TAG_PACKAGE, Log.DEBUG)) { |
| Log.d(CarLog.TAG_PACKAGE, "Null Activities for " + packageName); |
| } |
| return null; |
| } |
| List<String> optimizedActivityList = new ArrayList(); |
| for (ActivityInfo activity : activities) { |
| Bundle mData = activity.metaData; |
| if (mData != null && mData.getBoolean(DO_METADATA_ATTRIBUTE, false)) { |
| if (Log.isLoggable(CarLog.TAG_PACKAGE, Log.DEBUG)) { |
| Log.d(CarLog.TAG_PACKAGE, |
| "DO Activity:" + activity.packageName + "/" + activity.name); |
| } |
| optimizedActivityList.add(activity.name); |
| } |
| } |
| if (optimizedActivityList.isEmpty()) { |
| return null; |
| } |
| return optimizedActivityList.toArray(new String[optimizedActivityList.size()]); |
| } |
| } |