0101-APP-Alarm -controller

展示通过AlarmManager显示单次和重复定时调用

这个应用我在红米和HTC S510e上都进行了测试，在s510上达到到预期的效果但是红米上却有很大的延迟甚至reciver甚至无法收到消息

/*
* 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</h4>
App/Service/Alarm Controller

<h4>Source files</h4>
<table class="LinkTable">
<tr>
<td class="LinkColumn">src/com.example.android.apis/app/AlarmController.java</td>
<td class="DescrColumn">The activity that lets you schedule alarms</td>
</tr>
<tr>
<td class="LinkColumn">src/com.example.android.apis/app/OneShotAlarm.java</td>
<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>
<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>
<td class="DescrColumn">Defines contents of the screen</td>
</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();
}
};
}

注释:

RepeatingAlarm.class

OneShotAlarm.class

都是一个简单的Recevier