1 /* 2 * Copyright (C) 2007 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.example.android.apis.app; 18 19 // Need the following import to get access to the app resources, since this 20 // class is in a sub-package. 21 import com.example.android.apis.R; 22 23 import android.app.Activity; 24 import android.app.AlarmManager; 25 import android.app.PendingIntent; 26 import android.content.Intent; 27 import android.os.SystemClock; 28 import android.os.Bundle; 29 import android.view.View; 30 import android.view.View.OnClickListener; 31 import android.widget.Button; 32 import android.widget.Toast; 33 34 import java.util.Calendar; 35 36 /** 37 * Example of scheduling one-shot and repeating alarms. See 38 * {@link OneShotAlarm} for the code run when the one-shot alarm goes off, and 39 * {@link RepeatingAlarm} for the code run when the repeating alarm goes off. 40 * <h4>Demo</h4> 41 App/Service/Alarm Controller 42 43 <h4>Source files</h4> 44 <table class="LinkTable"> 45 <tr> 46 <td class="LinkColumn">src/com.example.android.apis/app/AlarmController.java</td> 47 <td class="DescrColumn">The activity that lets you schedule alarms</td> 48 </tr> 49 <tr> 50 <td class="LinkColumn">src/com.example.android.apis/app/OneShotAlarm.java</td> 51 <td class="DescrColumn">This is an intent receiver that executes when the 52 one-shot alarm goes off</td> 53 </tr> 54 <tr> 55 <td class="LinkColumn">src/com.example.android.apis/app/RepeatingAlarm.java</td> 56 <td class="DescrColumn">This is an intent receiver that executes when the 57 repeating alarm goes off</td> 58 </tr> 59 <tr> 60 <td class="LinkColumn">/res/any/layout/alarm_controller.xml</td> 61 <td class="DescrColumn">Defines contents of the screen</td> 62 </tr> 63 </table> 64 65 */ 66 public class AlarmController extends Activity { 67 Toast mToast; 68 69 @Override 70 protected void onCreate(Bundle savedInstanceState) { 71 super.onCreate(savedInstanceState); 72 73 setContentView(R.layout.alarm_controller); 74 75 // Watch for button clicks. 76 Button button = (Button)findViewById(R.id.one_shot); 77 button.setOnClickListener(mOneShotListener); 78 button = (Button)findViewById(R.id.start_repeating); 79 button.setOnClickListener(mStartRepeatingListener); 80 button = (Button)findViewById(R.id.stop_repeating); 81 button.setOnClickListener(mStopRepeatingListener); 82 } 83 84 private OnClickListener mOneShotListener = new OnClickListener() { 85 public void onClick(View v) { 86 // When the alarm goes off, we want to broadcast an Intent to our 87 // BroadcastReceiver. Here we make an Intent with an explicit class 88 // name to have our own receiver (which has been published in 89 // AndroidManifest.xml) instantiated and called, and then create an 90 // IntentSender to have the intent executed as a broadcast. 91 Intent intent = new Intent(AlarmController.this, OneShotAlarm.class); 92 PendingIntent sender = PendingIntent.getBroadcast(AlarmController.this, 93 0, intent, 0); 94 95 // We want the alarm to go off 30 seconds from now. 96 Calendar calendar = Calendar.getInstance(); 97 calendar.setTimeInMillis(System.currentTimeMillis()); 98 calendar.add(Calendar.SECOND, 30); 99 100 // Schedule the alarm! 101 AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE); 102 am.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), sender); 103 104 // Tell the user about what we did. 105 if (mToast != null) { 106 mToast.cancel(); 107 } 108 mToast = Toast.makeText(AlarmController.this, R.string.one_shot_scheduled, 109 Toast.LENGTH_LONG); 110 mToast.show(); 111 } 112 }; 113 114 private OnClickListener mStartRepeatingListener = new OnClickListener() { 115 public void onClick(View v) { 116 // When the alarm goes off, we want to broadcast an Intent to our 117 // BroadcastReceiver. Here we make an Intent with an explicit class 118 // name to have our own receiver (which has been published in 119 // AndroidManifest.xml) instantiated and called, and then create an 120 // IntentSender to have the intent executed as a broadcast. 121 // Note that unlike above, this IntentSender is configured to 122 // allow itself to be sent multiple times. 123 Intent intent = new Intent(AlarmController.this, RepeatingAlarm.class); 124 PendingIntent sender = PendingIntent.getBroadcast(AlarmController.this, 125 0, intent, 0); 126 127 // We want the alarm to go off 30 seconds from now. 128 long firstTime = SystemClock.elapsedRealtime(); 129 firstTime += 15*1000; 130 131 // Schedule the alarm! 132 AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE); 133 am.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, 134 firstTime, 15*1000, sender); 135 136 // Tell the user about what we did. 137 if (mToast != null) { 138 mToast.cancel(); 139 } 140 mToast = Toast.makeText(AlarmController.this, R.string.repeating_scheduled, 141 Toast.LENGTH_LONG); 142 mToast.show(); 143 } 144 }; 145 146 private OnClickListener mStopRepeatingListener = new OnClickListener() { 147 public void onClick(View v) { 148 // Create the same intent, and thus a matching IntentSender, for 149 // the one that was scheduled. 150 Intent intent = new Intent(AlarmController.this, RepeatingAlarm.class); 151 PendingIntent sender = PendingIntent.getBroadcast(AlarmController.this, 152 0, intent, 0); 153 154 // And cancel the alarm. 155 AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE); 156 am.cancel(sender); 157 158 // Tell the user about what we did. 159 if (mToast != null) { 160 mToast.cancel(); 161 } 162 mToast = Toast.makeText(AlarmController.this, R.string.repeating_unscheduled, 163 Toast.LENGTH_LONG); 164 mToast.show(); 165 } 166 }; 167 } 168 169
