1575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell/* 2575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * Copyright (C) 2012 The Android Open Source Project 3575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * 4575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * Licensed under the Apache License, Version 2.0 (the "License"); 5575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * you may not use this file except in compliance with the License. 6575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * You may obtain a copy of the License at 7575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * 8575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * http://www.apache.org/licenses/LICENSE-2.0 9575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * 10575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * Unless required by applicable law or agreed to in writing, software 11575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * distributed under the License is distributed on an "AS IS" BASIS, 12575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * See the License for the specific language governing permissions and 14575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * limitations under the License. 15575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell */ 16575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell 17575e098da5bc16ff8b95ca080284253fd206fe12Adam Powellpackage android.support.v4.content; 18575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell 19575e098da5bc16ff8b95ca080284253fd206fe12Adam Powellimport android.app.Activity; 20575e098da5bc16ff8b95ca080284253fd206fe12Adam Powellimport android.content.Context; 21575e098da5bc16ff8b95ca080284253fd206fe12Adam Powellimport android.content.Intent; 22575e098da5bc16ff8b95ca080284253fd206fe12Adam Powellimport android.os.Build; 23575e098da5bc16ff8b95ca080284253fd206fe12Adam Powellimport android.os.Bundle; 24575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell 25575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell/** 26575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * Helper for accessing features in {@link android.content.Context} 27575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * introduced after API level 4 in a backwards compatible fashion. 28575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell */ 29575e098da5bc16ff8b95ca080284253fd206fe12Adam Powellpublic class ContextCompat { 30575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell 31575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell /** 32575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * Start a set of activities as a synthesized task stack, if able. 33575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * 34575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * <p>In API level 11 (Android 3.0/Honeycomb) the recommended conventions for 35575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * app navigation using the back key changed. The back key's behavior is local 36575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * to the current task and does not capture navigation across different tasks. 37575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * Navigating across tasks and easily reaching the previous task is accomplished 38575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * through the "recents" UI, accessible through the software-provided Recents key 39575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * on the navigation or system bar. On devices with the older hardware button configuration 40575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * the recents UI can be accessed with a long press on the Home key.</p> 41575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * 42575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * <p>When crossing from one task stack to another post-Android 3.0, 43575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * the application should synthesize a back stack/history for the new task so that 44575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * the user may navigate out of the new task and back to the Launcher by repeated 45575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * presses of the back key. Back key presses should not navigate across task stacks.</p> 46575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * 47575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * <p>startActivities provides a mechanism for constructing a synthetic task stack of 48575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * multiple activities. If the underlying API is not available on the system this method 49575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * will return false.</p> 50575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * 51575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * @param context Start activities using this activity as the starting context 52575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * @param intents Array of intents defining the activities that will be started. The element 53575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * length-1 will correspond to the top activity on the resulting task stack. 54575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * @return true if the underlying API was available and the call was successful, false otherwise 55575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell */ 56575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell public static boolean startActivities(Context context, Intent[] intents) { 57575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell return startActivities(context, intents, null); 58575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell } 59575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell 60575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell /** 61575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * Start a set of activities as a synthesized task stack, if able. 62575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * 63575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * <p>In API level 11 (Android 3.0/Honeycomb) the recommended conventions for 64575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * app navigation using the back key changed. The back key's behavior is local 65575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * to the current task and does not capture navigation across different tasks. 66575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * Navigating across tasks and easily reaching the previous task is accomplished 67575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * through the "recents" UI, accessible through the software-provided Recents key 68575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * on the navigation or system bar. On devices with the older hardware button configuration 69575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * the recents UI can be accessed with a long press on the Home key.</p> 70575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * 71575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * <p>When crossing from one task stack to another post-Android 3.0, 72575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * the application should synthesize a back stack/history for the new task so that 73575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * the user may navigate out of the new task and back to the Launcher by repeated 74575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * presses of the back key. Back key presses should not navigate across task stacks.</p> 75575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * 76575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * <p>startActivities provides a mechanism for constructing a synthetic task stack of 77575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * multiple activities. If the underlying API is not available on the system this method 78575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * will return false.</p> 79575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * 80575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * @param context Start activities using this activity as the starting context 81575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * @param intents Array of intents defining the activities that will be started. The element 82575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * length-1 will correspond to the top activity on the resulting task stack. 83575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * @param options Additional options for how the Activity should be started. 84575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * See {@link android.content.Context#startActivity(Intent, Bundle) 85575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell * @return true if the underlying API was available and the call was successful, false otherwise 86575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell */ 87575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell public static boolean startActivities(Context context, Intent[] intents, 88575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell Bundle options) { 89575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell final int version = Build.VERSION.SDK_INT; 90575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell if (version >= 16) { 91575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell ContextCompatJellybean.startActivities(context, intents, options); 92575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell return true; 93575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell } else if (version >= 11) { 94575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell ContextCompatHoneycomb.startActivities(context, intents); 95575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell return true; 96575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell } 97575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell return false; 98575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell } 99575e098da5bc16ff8b95ca080284253fd206fe12Adam Powell} 100