Android实战Service BroadcastReceiver与AlarmManager

核心提示：SleepMusicService.class);//停止服务stopService(sleepMusicService);}};@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);se

SleepMusicService.class);

//停止服务

stopService(sleepMusicService);

}

};

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

// ...... 代码省略

// 获取Layout中的按钮

startButton = (Button) findViewById(R.id.b_start);

cancelButton = (Button) findViewById(R.id.b_cancel);

startButton.setOnClickListener(startButtonClickListener);

cancelButton.setOnClickListener(cancelButtonClickListener);

restartButton = (Button) findViewById(R.id.b_restart);

restartButton.setOnClickListener(restartButtonClickListener);

}

}

完成了这个Activity之后，就容易的多了，剩下的就是BroadcastReceiver了，新建一个类继承BroadcastReceiver

并且实现onReceive()方法

package com.shinestudio.sleepMusic;

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;

import android.widget.Toast;

public class AlarmReceiver extends BroadcastReceiver {

@Override

public void onReceive(Context context, Intent intent) {

Toast.makeText(context, "时间到", Toast.LENGTH_SHORT).show();

}

}

当Service中的AlarmManager完成计时后将广播消息给AlarmReceiver，这样就会显示Toast给用户了。

在AndroidManifest.xml中添加activity、service、和receiver的设置

package="com.shinestudio.sleepMusic" android:versionCode="1"

android:versionName="1.0">

android:theme="@android:style/Theme.Black.NoTitleBar">

附加提供的一点点代码片

打开HTC HERO 自带的HTC Music Player