/*
* 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 app.test;
import android.app.Activity;
import android.app.AlarmManager;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.Bundle;
import android.os.IBinder;
import android.os.Parcel;
import android.os.RemoteException;
import android.os.SystemClock;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
/**
* This is an example of implementing an application service that will run in
* response to an alarm, allowing us to move long duration work out of an intent
* receiver.
*
* @see AlarmService
* @see AlarmService_Alarm
*/
class AlarmService_Service extends Service {
NotificationManager mNM;
@Override
public void onCreate() {
mNM = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
// show the icon in the status bar
showNotification();
// Start up the thread running the service. Note that we create a
// separate thread because the service normally runs in the process's
// main thread, which we don't want to block.
Thread thr = new Thread(null, mTask, "AlarmService_Service");
thr.start();
}
@Override
public void onDestroy() {
// Cancel the notification -- we use the same ID that we had used to
// start it
mNM.cancel(0);
// Tell the user we stopped.
Toast.makeText(this, "alarm_service_finished",
Toast.LENGTH_SHORT).show();
}
/**
* The function that runs in our worker thread
*/
Runnable mTask = new Runnable() {
public void run() {
// Normally we would do some work here... for our sample, we will
// just sleep for 30 seconds.
long endTime = System.currentTimeMillis() + 15 * 1000;
while (System.currentTimeMillis() < endTime) {
synchronized (mBinder) {
try {
mBinder.wait(endTime - System.currentTimeMillis());
} catch (Exception e) {
}
}
}
// Done with our work... stop the service!
AlarmService_Service.this.stopSelf();
}
};
@Override
public IBinder onBind(Intent intent) {
return mBinder;
}
/**
* Show a notification while this service is running.
*/
private void showNotification() {
// In this sample, we'll use the same text for the ticker and the
// expanded notification
CharSequence text = "alarm_service_started";
// Set the icon, scrolling text and timestamp
Notification notification = new Notification(R.drawable.icon,
text, System.currentTimeMillis());
// The PendingIntent to launch our activity if the user selects this
// notification
PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
new Intent(this, Test.class), 0);
// Set the info for the views that show in the notification panel.
notification.setLatestEventInfo(this,
"alarm_service_label", text, contentIntent);
// Send the notification.
// We use a layout id because it is a unique number. We use it later to
// cancel.
mNM.notify(0, notification);
}
/**
* This is the object that receives interactions from clients. See
* RemoteService for a more complete example.
*/
private final IBinder mBinder = new Binder() {
@Override
protected boolean onTransact(int code, Parcel data, Parcel reply,
int flags) throws RemoteException {
return super.onTransact(code, data, reply, flags);
}
};
}
/**
* This demonstrates how you can schedule an alarm that causes a service to be
* started. This is useful when you want to schedule alarms that initiate
* long-running operations, such as retrieving recent e-mails.
*/
public class Test extends Activity {
private PendingIntent mAlarmSender;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Create an IntentSender that will launch our service, to be scheduled
// with the alarm manager.
mAlarmSender = PendingIntent.getService(Test.this, 0, new Intent(
Test.this, AlarmService_Service.class), 0);
setContentView(R.layout.main);
// Watch for button clicks.
Button button = (Button) findViewById(R.id.start_alarm);
button.setOnClickListener(mStartAlarmListener);
button = (Button) findViewById(R.id.stop_alarm);
button.setOnClickListener(mStopAlarmListener);
}
private OnClickListener mStartAlarmListener = new OnClickListener() {
public void onClick(View v) {
// We want the alarm to go off 30 seconds from now.
long firstTime = SystemClock.elapsedRealtime();
// Schedule the alarm!
AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE);
am.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, firstTime,
30 * 1000, mAlarmSender);
// Tell the user about what we did.
Toast.makeText(Test.this, "repeating_scheduled", Toast.LENGTH_LONG)
.show();
}
};
private OnClickListener mStopAlarmListener = new OnClickListener() {
public void onClick(View v) {
// And cancel the alarm.
AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE);
am.cancel(mAlarmSender);
// Tell the user about what we did.
Toast.makeText(Test.this, "repeating_unscheduled",
Toast.LENGTH_LONG).show();
}
};
}
//main.xml
android:gravity="center_horizontal"
android:layout_width="match_parent" android:layout_height="match_parent">
android:layout_width="match_parent" android:layout_height="wrap_content"
android:layout_weight="0"
android:paddingBottom="4dip"
android:text="alarm_service"/>
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:text="start_alarm_service">
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:text="stop_alarm_service" />