TaskStackBuilder.java revision 5c43ec9328ba98fa88acc452b140f2d682a3042c
1dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell/* 2dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * Copyright (C) 2012 The Android Open Source Project 3dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * 4dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * Licensed under the Apache License, Version 2.0 (the "License"); 5dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * you may not use this file except in compliance with the License. 6dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * You may obtain a copy of the License at 7dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * 8dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * http://www.apache.org/licenses/LICENSE-2.0 9dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * 10dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * Unless required by applicable law or agreed to in writing, software 11dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * distributed under the License is distributed on an "AS IS" BASIS, 12dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * See the License for the specific language governing permissions and 14dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * limitations under the License. 15dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell */ 16dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell 17dd8fab2629131b09367df747afd9a61e42dd1992Adam Powellpackage android.app; 18dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell 19dd8fab2629131b09367df747afd9a61e42dd1992Adam Powellimport android.content.ComponentName; 20dd8fab2629131b09367df747afd9a61e42dd1992Adam Powellimport android.content.Context; 21dd8fab2629131b09367df747afd9a61e42dd1992Adam Powellimport android.content.Intent; 22dd8fab2629131b09367df747afd9a61e42dd1992Adam Powellimport android.content.pm.ActivityInfo; 23dd8fab2629131b09367df747afd9a61e42dd1992Adam Powellimport android.content.pm.PackageManager; 24dd8fab2629131b09367df747afd9a61e42dd1992Adam Powellimport android.content.pm.PackageManager.NameNotFoundException; 25f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powellimport android.os.Bundle; 26dd8fab2629131b09367df747afd9a61e42dd1992Adam Powellimport android.util.Log; 27dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell 28dd8fab2629131b09367df747afd9a61e42dd1992Adam Powellimport java.util.ArrayList; 29dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell 30dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell/** 31dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * Utility class for constructing synthetic back stacks for cross-task navigation 32dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * on Android 3.0 and newer. 33dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * 34dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * <p>In API level 11 (Android 3.0/Honeycomb) the recommended conventions for 35dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * app navigation using the back key changed. The back key's behavior is local 36dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * to the current task and does not capture navigation across different tasks. 37dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * Navigating across tasks and easily reaching the previous task is accomplished 38dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * through the "recents" UI, accessible through the software-provided Recents key 39dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * on the navigation or system bar. On devices with the older hardware button configuration 40dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * the recents UI can be accessed with a long press on the Home key.</p> 41dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * 42dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * <p>When crossing from one task stack to another post-Android 3.0, 43dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * the application should synthesize a back stack/history for the new task so that 44dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * the user may navigate out of the new task and back to the Launcher by repeated 45dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * presses of the back key. Back key presses should not navigate across task stacks.</p> 46dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * 47dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * <p>TaskStackBuilder provides a way to obey the correct conventions 48dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * around cross-task navigation.</p> 49dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * 50dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * <div class="special reference"> 51dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * <h3>About Navigation</h3> 52dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * For more detailed information about tasks, the back stack, and navigation design guidelines, 53dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * please read 54dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * <a href="{@docRoot}guide/topics/fundamentals/tasks-and-back-stack.html">Tasks and Back Stack</a> 55dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * from the developer guide and <a href="{@docRoot}design/patterns/navigation.html">Navigation</a> 56dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * from the design guide. 57dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * </div> 58dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell */ 59f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powellpublic class TaskStackBuilder { 60dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell private static final String TAG = "TaskStackBuilder"; 61dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell 62dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell private final ArrayList<Intent> mIntents = new ArrayList<Intent>(); 63dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell private final Context mSourceContext; 64dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell 65dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell private TaskStackBuilder(Context a) { 66dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell mSourceContext = a; 67dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell } 68dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell 69dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell /** 70dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * Return a new TaskStackBuilder for launching a fresh task stack consisting 71dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * of a series of activities. 72dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * 73dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * @param context The context that will launch the new task stack or generate a PendingIntent 74dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * @return A new TaskStackBuilder 75dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell */ 76f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell public static TaskStackBuilder create(Context context) { 77dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell return new TaskStackBuilder(context); 78dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell } 79dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell 80dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell /** 81dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * Add a new Intent to the task stack. The most recently added Intent will invoke 82dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * the Activity at the top of the final task stack. 83dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * 84dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * @param nextIntent Intent for the next Activity in the synthesized task stack 85dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * @return This TaskStackBuilder for method chaining 86dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell */ 87dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell public TaskStackBuilder addNextIntent(Intent nextIntent) { 88dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell mIntents.add(nextIntent); 89dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell return this; 90dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell } 91dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell 92dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell /** 93f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * Add a new Intent with the resolved chain of parents for the target activity to 94f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * the task stack. 95f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * 96f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * <p>This is equivalent to calling {@link #addParentStack(ComponentName) addParentStack} 97f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * with the resolved ComponentName of nextIntent (if it can be resolved), followed by 98f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * {@link #addNextIntent(Intent) addNextIntent} with nextIntent.</p> 99f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * 100f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * @param nextIntent Intent for the topmost Activity in the synthesized task stack. 101f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * Its chain of parents as specified in the manifest will be added. 102f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * @return This TaskStackBuilder for method chaining. 103f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell */ 104f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell public TaskStackBuilder addNextIntentWithParentStack(Intent nextIntent) { 105f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell ComponentName target = nextIntent.getComponent(); 106f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell if (target == null) { 107f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell target = nextIntent.resolveActivity(mSourceContext.getPackageManager()); 108f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell } 109f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell if (target != null) { 110f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell addParentStack(target); 111f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell } 112f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell addNextIntent(nextIntent); 113f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell return this; 114f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell } 115f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell 116f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell /** 117dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * Add the activity parent chain as specified by the 1183c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell * {@link Activity#getParentActivityIntent() getParentActivityIntent()} method of the activity 1193c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell * specified and the {@link android.R.attr#parentActivityName parentActivityName} attributes 1203c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell * of each successive activity (or activity-alias) element in the application's manifest 1213c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell * to the task stack builder. 122dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * 123dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * @param sourceActivity All parents of this activity will be added 124dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * @return This TaskStackBuilder for method chaining 125dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell */ 126dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell public TaskStackBuilder addParentStack(Activity sourceActivity) { 127dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell final int insertAt = mIntents.size(); 128dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell Intent parent = sourceActivity.getParentActivityIntent(); 129dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell PackageManager pm = sourceActivity.getPackageManager(); 130dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell while (parent != null) { 131dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell mIntents.add(insertAt, parent); 132dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell try { 133dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell ActivityInfo info = pm.getActivityInfo(parent.getComponent(), 0); 134dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell String parentActivity = info.parentActivityName; 135dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell if (parentActivity != null) { 136dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell parent = new Intent().setComponent( 137dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell new ComponentName(mSourceContext, parentActivity)); 138dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell } else { 139dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell parent = null; 140dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell } 141dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell } catch (NameNotFoundException e) { 142dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell Log.e(TAG, "Bad ComponentName while traversing activity parent metadata"); 143dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell throw new IllegalArgumentException(e); 144dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell } 145dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell } 146dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell return this; 147dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell } 148dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell 149dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell /** 150dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * Add the activity parent chain as specified by the 151dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * {@link android.R.attr#parentActivityName parentActivityName} attribute of the activity 152dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * (or activity-alias) element in the application's manifest to the task stack builder. 153dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * 154dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * @param sourceActivityClass All parents of this activity will be added 155dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * @return This TaskStackBuilder for method chaining 156dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell */ 157dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell public TaskStackBuilder addParentStack(Class<?> sourceActivityClass) { 158dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell final int insertAt = mIntents.size(); 159dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell PackageManager pm = mSourceContext.getPackageManager(); 160dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell try { 161dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell ActivityInfo info = pm.getActivityInfo( 162dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell new ComponentName(mSourceContext, sourceActivityClass), 0); 163dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell String parentActivity = info.parentActivityName; 164dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell Intent parent = new Intent().setComponent( 165dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell new ComponentName(mSourceContext, parentActivity)); 166dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell while (parent != null) { 167dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell mIntents.add(insertAt, parent); 168dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell info = pm.getActivityInfo(parent.getComponent(), 0); 169dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell parentActivity = info.parentActivityName; 170dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell if (parentActivity != null) { 171dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell parent = new Intent().setComponent( 172dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell new ComponentName(mSourceContext, parentActivity)); 173dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell } else { 174dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell parent = null; 175dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell } 176dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell } 177dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell } catch (NameNotFoundException e) { 178dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell Log.e(TAG, "Bad ComponentName while traversing activity parent metadata"); 179dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell throw new IllegalArgumentException(e); 180dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell } 181dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell return this; 182dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell } 183dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell 184dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell /** 1853c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell * Add the activity parent chain as specified by the 1863c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell * {@link android.R.attr#parentActivityName parentActivityName} attribute of the activity 1873c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell * (or activity-alias) element in the application's manifest to the task stack builder. 1883c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell * 1893c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell * @param sourceActivityName Must specify an Activity component. All parents of 1903c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell * this activity will be added 1913c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell * @return This TaskStackBuilder for method chaining 1923c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell */ 1933c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell public TaskStackBuilder addParentStack(ComponentName sourceActivityName) { 1943c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell final int insertAt = mIntents.size(); 1953c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell PackageManager pm = mSourceContext.getPackageManager(); 1963c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell try { 1973c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell ActivityInfo info = pm.getActivityInfo(sourceActivityName, 0); 1983c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell String parentActivity = info.parentActivityName; 1995c43ec9328ba98fa88acc452b140f2d682a3042cAdam Powell while (parentActivity != null) { 2005c43ec9328ba98fa88acc452b140f2d682a3042cAdam Powell Intent parent = new Intent().setComponent( 2015c43ec9328ba98fa88acc452b140f2d682a3042cAdam Powell new ComponentName(info.packageName, parentActivity)); 2023c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell mIntents.add(insertAt, parent); 2033c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell info = pm.getActivityInfo(parent.getComponent(), 0); 2043c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell parentActivity = info.parentActivityName; 2053c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell } 2063c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell } catch (NameNotFoundException e) { 2073c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell Log.e(TAG, "Bad ComponentName while traversing activity parent metadata"); 2083c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell throw new IllegalArgumentException(e); 2093c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell } 2103c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell return this; 2113c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell } 2123c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell 2133c464bdefe37f75153e8a8c978c3457ae4d1f37eAdam Powell /** 214dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * @return the number of intents added so far. 215dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell */ 216dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell public int getIntentCount() { 217dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell return mIntents.size(); 218dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell } 219dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell 220dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell /** 221f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * Return the intent at the specified index for modification. 222dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * Useful if you need to modify the flags or extras of an intent that was previously added, 223dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * for example with {@link #addParentStack(Activity)}. 224dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * 225dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * @param index Index from 0-getIntentCount() 226dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * @return the intent at position index 227dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell */ 228f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell public Intent editIntentAt(int index) { 229dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell return mIntents.get(index); 230dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell } 231dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell 232f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell /** 233f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * Start the task stack constructed by this builder. 234f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell */ 235f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell public void startActivities() { 236f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell startActivities(null); 237dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell } 238dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell 239dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell /** 240dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * Start the task stack constructed by this builder. 241f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * 242f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * @param options Additional options for how the Activity should be started. 243f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * See {@link android.content.Context#startActivity(Intent, Bundle) 244f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * Context.startActivity(Intent, Bundle)} for more details. 245dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell */ 246f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell public void startActivities(Bundle options) { 247dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell if (mIntents.isEmpty()) { 248dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell throw new IllegalStateException( 249dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell "No intents added to TaskStackBuilder; cannot startActivities"); 250dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell } 251dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell 252dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell Intent[] intents = mIntents.toArray(new Intent[mIntents.size()]); 253dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell intents[0].addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | 254dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell Intent.FLAG_ACTIVITY_CLEAR_TASK | 255dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell Intent.FLAG_ACTIVITY_TASK_ON_HOME); 256f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell mSourceContext.startActivities(intents, options); 257dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell } 258dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell 259dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell /** 260dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * Obtain a {@link PendingIntent} for launching the task constructed by this builder so far. 261dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * 262dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * @param requestCode Private request code for the sender 263dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * @param flags May be {@link PendingIntent#FLAG_ONE_SHOT}, 264dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * {@link PendingIntent#FLAG_NO_CREATE}, {@link PendingIntent#FLAG_CANCEL_CURRENT}, 265dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * {@link PendingIntent#FLAG_UPDATE_CURRENT}, or any of the flags supported by 266dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * {@link Intent#fillIn(Intent, int)} to control which unspecified parts of the 267dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * intent that can be supplied when the actual send happens. 268f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * 269dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell * @return The obtained PendingIntent 270dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell */ 271dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell public PendingIntent getPendingIntent(int requestCode, int flags) { 272f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell return getPendingIntent(requestCode, flags, null); 273f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell } 274f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell 275f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell /** 276f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * Obtain a {@link PendingIntent} for launching the task constructed by this builder so far. 277f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * 278f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * @param requestCode Private request code for the sender 279f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * @param flags May be {@link PendingIntent#FLAG_ONE_SHOT}, 280f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * {@link PendingIntent#FLAG_NO_CREATE}, {@link PendingIntent#FLAG_CANCEL_CURRENT}, 281f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * {@link PendingIntent#FLAG_UPDATE_CURRENT}, or any of the flags supported by 282f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * {@link Intent#fillIn(Intent, int)} to control which unspecified parts of the 283f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * intent that can be supplied when the actual send happens. 284f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * @param options Additional options for how the Activity should be started. 285f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * See {@link android.content.Context#startActivity(Intent, Bundle) 286f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * Context.startActivity(Intent, Bundle)} for more details. 287f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * 288f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * @return The obtained PendingIntent 289f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell */ 290f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell public PendingIntent getPendingIntent(int requestCode, int flags, Bundle options) { 2918ab700cbbab60f7a01a86cbf16496e1f34236dd6Adam Powell if (mIntents.isEmpty()) { 2928ab700cbbab60f7a01a86cbf16496e1f34236dd6Adam Powell throw new IllegalStateException( 2938ab700cbbab60f7a01a86cbf16496e1f34236dd6Adam Powell "No intents added to TaskStackBuilder; cannot getPendingIntent"); 2948ab700cbbab60f7a01a86cbf16496e1f34236dd6Adam Powell } 2958ab700cbbab60f7a01a86cbf16496e1f34236dd6Adam Powell 296dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell Intent[] intents = mIntents.toArray(new Intent[mIntents.size()]); 2978ab700cbbab60f7a01a86cbf16496e1f34236dd6Adam Powell intents[0].addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | 2988ab700cbbab60f7a01a86cbf16496e1f34236dd6Adam Powell Intent.FLAG_ACTIVITY_CLEAR_TASK | 2998ab700cbbab60f7a01a86cbf16496e1f34236dd6Adam Powell Intent.FLAG_ACTIVITY_TASK_ON_HOME); 300f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell return PendingIntent.getActivities(mSourceContext, requestCode, intents, flags, options); 301f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell } 302f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell 303f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell /** 304f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * Return an array containing the intents added to this builder. The intent at the 305f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * root of the task stack will appear as the first item in the array and the 306f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * intent at the top of the stack will appear as the last item. 307f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * 308f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell * @return An array containing the intents added to this builder. 309f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell */ 310f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell public Intent[] getIntents() { 311f78a8444a9b21b0d1daca8667d580dd0ec04a310Adam Powell return mIntents.toArray(new Intent[mIntents.size()]); 312dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell } 313dd8fab2629131b09367df747afd9a61e42dd1992Adam Powell} 314