Android实现简易闹钟功能

2023-08-21 13:52:05 69

本文实例为大家分享了Android通过广播来实现闹钟的具体代码，供大家参考，具体内容如下

1.创建广播接收RepeatingAlarm.java

importandroid.content.BroadcastReceiver;
importandroid.content.Context;
importandroid.content.Intent;
importandroid.util.Log;

publicclassRepeatingAlarmextendsBroadcastReceiver{

@Override
publicvoidonReceive(Contextcontext,Intentintent){
if(intent.getAction()!=null&&intent.getAction().equals("com.gcc.alarm")){//自定义的action
intent=newIntent(context,AlarmActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);
}
}
}

2.广播在Manifest.xml中配置：

3.通过代码设置一个闹钟

Intentintent=newIntent(this,RepeatingAlarm.class);
intent.setAction("com.gcc.alarm");
PendingIntentsender=PendingIntent.getBroadcast(this,0,intent,0);
//Schedulethealarm!
AlarmManageram=(AlarmManager)getSystemService(ALARM_SERVICE);
am.set(AlarmManager.RTC,
c.getTimeInMillis(),sender);//c为设置闹钟的时间的Calendar对象

4.通过代码取消一个闹钟：

/**
*取消闹钟
*/
privatevoidcancleAlarm(){
Intentintent=newIntent(AlarmActivity.this,RepeatingAlarm.class);
intent.setAction("com.gcc.alarm");
PendingIntentsender=PendingIntent.getBroadcast(AlarmActivity.this,0,intent,0);
//Andcancelthealarm.
AlarmManageram=(AlarmManager)getSystemService(ALARM_SERVICE);
am.cancel(sender);//取消闹钟
}

5.闹钟响是弹出的对化框并播放音乐用AlarmActivity.java类实现

importandroid.app.Activity;
importandroid.app.AlarmManager;
importandroid.app.AlertDialog;
importandroid.app.PendingIntent;
importandroid.content.Context;
importandroid.content.DialogInterface;
importandroid.content.Intent;
importandroid.content.res.AssetFileDescriptor;
importandroid.media.MediaPlayer;
importandroid.os.Bundle;

publicclassAlarmActivityextendsActivity{

MediaPlayermp;

@Override
protectedvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.aty_alarm);
mp=newMediaPlayer();
AssetFileDescriptorfile=getResources().openRawResourceFd(R.raw.beep);
try{
mp.setDataSource(file.getFileDescriptor(),file.getStartOffset(),
file.getLength());
mp.prepare();
file.close();
}catch(IOExceptione){
e.printStackTrace();
}
mp.setVolume(0.5f,0.5f);
mp.setLooping(true);
mp.start();
alarmOialog();
}

@Override
protectedvoidonResume(){
super.onResume();
}

@Override
protectedvoidonDestroy(){
super.onDestroy();
if(mp!=null){
if(mp.isPlaying()){
mp.stop();
}
mp.release();
}
}

publicvoidalarmOialog(){
AlertDialog.Builderbuilder=newAlertDialog.Builder(this);
builder.setMessage("你有未处理的事件");
builder.setPositiveButton("稍后提醒",
newDialogInterface.OnClickListener(){

@Override
publicvoidonClick(DialogInterfacedialogInterface,inti){
alarm();
finish();
}
});

builder.setNegativeButton("停止",newDialogInterface.OnClickListener(){

@Override
publicvoidonClick(DialogInterfacedialogInterface,inti){
cancleAlarm();
finish();//关闭窗口
}
});
builder.show().setCanceledOnTouchOutside(false);
;

}

/**
*取消闹钟
*/
privatevoidcancleAlarm(){
//Createthesameintent,andthusamatchingIntentSender,for
//theonethatwasscheduled.
Intentintent=newIntent(AlarmActivity.this,RepeatingAlarm.class);
intent.setAction("com.gcc.alarm");
PendingIntentsender=PendingIntent.getBroadcast(AlarmActivity.this,
0,intent,0);

//Andcancelthealarm.
AlarmManageram=(AlarmManager)getSystemService(ALARM_SERVICE);
am.cancel(sender);
}

privatevoidalarm(){
//获取系统的闹钟服务
AlarmManageram=(AlarmManager)getSystemService(Context.ALARM_SERVICE);
//触发闹钟的时间（毫秒）
longtriggerTime=System.currentTimeMillis()+10000;
Intentintent=newIntent(this,RepeatingAlarm.class);
intent.setAction("com.gcc.alarm");
PendingIntentop=PendingIntent.getBroadcast(this,0,intent,0);
//启动一次只会执行一次的闹钟
am.set(AlarmManager.RTC,triggerTime,op);
//指定时间重复执行闹钟
//am.setRepeating(AlarmManager.RTC,triggerTime,2000,op);
}

}

6.注：

1.aty_alarm.xml为空布局，不需添加任何组件
2.使用MediaPlayer播放res/raw目录下音频文件的方法如下：

mp=newMediaPlayer();
AssetFileDescriptorfile=getResources().openRawResourceFd(R.raw.beep);
try{
mp.setDataSource(file.getFileDescriptor(),file.getStartOffset(),
file.getLength());

7.功能不是很完善，需要的可以修改使用，闹钟时间设定可通过上篇博文来获取Calendar对象。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持毛票票。

Android实现简易闹钟功能

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