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Android example source code file (AlarmController.java)
The AlarmController.java Android example source code/* * Copyright (C) 2007 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.example.android.apis.app; // Need the following import to get access to the app resources, since this // class is in a sub-package. import com.example.android.apis.R; import android.app.Activity; import android.app.AlarmManager; import android.app.PendingIntent; import android.content.Intent; import android.os.SystemClock; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.Toast; import java.util.Calendar; /** * Example of scheduling one-shot and repeating alarms. See * {@link OneShotAlarm} for the code run when the one-shot alarm goes off, and * {@link RepeatingAlarm} for the code run when the repeating alarm goes off. * <h4>Demo App/Service/Alarm Controller <h4>Source files <table class="LinkTable"> <tr> <td class="LinkColumn">src/com.example.android.apis/app/AlarmController.java |
<td class="DescrColumn">The activity that lets you schedule alarms
</tr>
<tr>
<td class="LinkColumn">src/com.example.android.apis/app/OneShotAlarm.java
<td class="DescrColumn">This is an intent receiver that executes when the
one-shot alarm goes off</td>
</tr>
<tr>
<td class="LinkColumn">src/com.example.android.apis/app/RepeatingAlarm.java
<td class="DescrColumn">This is an intent receiver that executes when the
repeating alarm goes off</td>
</tr>
<tr>
<td class="LinkColumn">/res/any/layout/alarm_controller.xml
<td class="DescrColumn">Defines contents of the screen
</tr>
</table>
*/
public class AlarmController extends Activity {
Toast mToast;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.alarm_controller);
// Watch for button clicks.
Button button = (Button)findViewById(R.id.one_shot);
button.setOnClickListener(mOneShotListener);
button = (Button)findViewById(R.id.start_repeating);
button.setOnClickListener(mStartRepeatingListener);
button = (Button)findViewById(R.id.stop_repeating);
button.setOnClickListener(mStopRepeatingListener);
}
private OnClickListener mOneShotListener = new OnClickListener() {
public void onClick(View v) {
// When the alarm goes off, we want to broadcast an Intent to our
// BroadcastReceiver. Here we make an Intent with an explicit class
// name to have our own receiver (which has been published in
// AndroidManifest.xml) instantiated and called, and then create an
// IntentSender to have the intent executed as a broadcast.
Intent intent = new Intent(AlarmController.this, OneShotAlarm.class);
PendingIntent sender = PendingIntent.getBroadcast(AlarmController.this,
0, intent, 0);
// We want the alarm to go off 30 seconds from now.
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.add(Calendar.SECOND, 30);
// Schedule the alarm!
AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE);
am.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), sender);
// Tell the user about what we did.
if (mToast != null) {
mToast.cancel();
}
mToast = Toast.makeText(AlarmController.this, R.string.one_shot_scheduled,
Toast.LENGTH_LONG);
mToast.show();
}
};
private OnClickListener mStartRepeatingListener = new OnClickListener() {
public void onClick(View v) {
// When the alarm goes off, we want to broadcast an Intent to our
// BroadcastReceiver. Here we make an Intent with an explicit class
// name to have our own receiver (which has been published in
// AndroidManifest.xml) instantiated and called, and then create an
// IntentSender to have the intent executed as a broadcast.
// Note that unlike above, this IntentSender is configured to
// allow itself to be sent multiple times.
Intent intent = new Intent(AlarmController.this, RepeatingAlarm.class);
PendingIntent sender = PendingIntent.getBroadcast(AlarmController.this,
0, intent, 0);
// We want the alarm to go off 30 seconds from now.
long firstTime = SystemClock.elapsedRealtime();
firstTime += 15*1000;
// Schedule the alarm!
AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE);
am.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP,
firstTime, 15*1000, sender);
// Tell the user about what we did.
if (mToast != null) {
mToast.cancel();
}
mToast = Toast.makeText(AlarmController.this, R.string.repeating_scheduled,
Toast.LENGTH_LONG);
mToast.show();
}
};
private OnClickListener mStopRepeatingListener = new OnClickListener() {
public void onClick(View v) {
// Create the same intent, and thus a matching IntentSender, for
// the one that was scheduled.
Intent intent = new Intent(AlarmController.this, RepeatingAlarm.class);
PendingIntent sender = PendingIntent.getBroadcast(AlarmController.this,
0, intent, 0);
// And cancel the alarm.
AlarmManager am = (AlarmManager)getSystemService(ALARM_SERVICE);
am.cancel(sender);
// Tell the user about what we did.
if (mToast != null) {
mToast.cancel();
}
mToast = Toast.makeText(AlarmController.this, R.string.repeating_unscheduled,
Toast.LENGTH_LONG);
mToast.show();
}
};
}
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