android Service
效果:点击start 按钮,开始播放音乐,点击end 按钮,暂停音乐,手机按home键,音乐依旧进行。LocalService.java
package com.example.servicedemo;
import android.app.Service;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.IBinder;
public class LocalService extends Service{
private MediaPlayer player;
@Override
public IBinder onBind(Intent arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public void onCreate() {
// TODO Auto-generated method stub
super.onCreate();
}
@Override
public void onDestroy() {
// TODO Auto-generated method stub
player.stop();
super.onDestroy();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
// TODO Auto-generated method stub
player=MediaPlayer.create(this, R.raw.home);
player.start();
return super.onStartCommand(intent, flags, startId);
}
}
MainActivity.java
package com.example.servicedemo;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends Activity {
Button start,end;
TextView tv;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
start=(Button)findViewById(R.id.start);
end=(Button)findViewById(R.id.end);
start.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent=new Intent("intent.LocalService");
startService(intent);
}
});
end.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent=new Intent("intent.LocalService");
stopService(intent);
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.servicedemo"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.servicedemo.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:name=".LocalService">
<intent-filter>
<action android:name="intent.LocalService"></action>
<category android:name="android.intent.category.DeFAULT"></category>
</intent-filter>
</service>
</application>
</manifest>
文档来源:51CTO技术博客https://blog.51cto.com/u_15322177/3266594
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