res/layout/main.xml
xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="20dp"
android:textColor="@android:color/white"
android:textStyle="bold"
android:text="使用Service播放音乐"
android:gravity="center"
/>
<Button
android:id="@+id/playButton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Play Music"
/>
<Button
android:id="@+id/pauseButton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Pause Music"
/>
<Button
android:id="@+id/stopButton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Stop Music"
/>
<Button
android:id="@+id/stopService"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Stop Service"
/>
LinearLayout>
MusicService.java
package com.zeph.android.service;
import android.app.Service;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.IBinder;
public class MusicService extends Service {
private MediaPlayer mMediaPlayer;
@Override
public IBinder onBind(Intent arg0) {
return null;
}
@Override
public void onCreate() {
super.onCreate();
mMediaPlayer = MediaPlayer.create(this, R.raw.music01);
}
@Override
public void onDestroy() {
super.onDestroy();
mMediaPlayer.stop();
mMediaPlayer.release();
}
@Override
public void onStart(Intent intent, int startId) {
super.onStart(intent, startId);
int operate = intent.getIntExtra("operate", 3);
switch (operate) {
case 0:
if (!mMediaPlayer.isPlaying()) {
mMediaPlayer.start();
}
break;
case 1:
if (mMediaPlayer.isPlaying()) {
mMediaPlayer.pause();
}
break;
case 2:
if (mMediaPlayer.isPlaying()) {
mMediaPlayer.stop();
mMediaPlayer = MediaPlayer.create(this, R.raw.music01);
}
break;
default:
break;
}
}
}
ServiceTestActivity.java
package com.zeph.android.service;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class ServiceTestActivity extends Activity {
private Button playButton;
private Button pauseButton;
private Button stopButton;
private Button stopService;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
playButton = (Button) findViewById(R.id.playButton);
pauseButton = (Button) findViewById(R.id.pauseButton);
stopButton = (Button) findViewById(R.id.stopButton);
stopService = (Button) findViewById(R.id.stopService);
playButton.setOnClickListener(new ButtonOnClickListener());
pauseButton.setOnClickListener(new ButtonOnClickListener());
stopButton.setOnClickListener(new ButtonOnClickListener());
stopService.setOnClickListener(new ButtonOnClickListener());
}
public class ButtonOnClickListener implements OnClickListener {
@Override
public void onClick(View view) {
Intent intent = new Intent();
intent.setClass(getApplicationContext(), MusicService.class);
if (view == playButton) {
intent.putExtra("operate", 0);
startService(intent);
} else if (view == pauseButton) {
intent.putExtra("operate", 1);
startService(intent);
} else if (view == stopButton) {
intent.putExtra("operate", 2);
startService(intent);
} else if (view == stopService) {
stopService(intent);
}
}
}
}
