/* * 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;/** * 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 AlarmService 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(AlarmService.this,                0, new Intent(AlarmService.this, AlarmService_Service.class), 0);                setContentView(R.layout.alarm_service);        // 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(AlarmService.this, R.string.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(AlarmService.this, R.string.repeating_unscheduled,                    Toast.LENGTH_LONG).show();        }    };}