Go语言视频零基础入门到精通

jspfan

       Android有个贪吃蛇的游戏，但是打开这个游戏非常枯燥，给加个背景音乐吧

       1、增加一个类，这个类是继承Service的，如下。

java代码：
package com.example.android.snake;



import android.app.Service;

import android.content.Intent;

import android.media.MediaPlayer;

import android.os.IBinder;



public class MusicServer extends Service {

private MediaPlayer mediaPlayer;



@Override

public IBinder onBind(Intent intent) {

// TODO Auto-generated method stub

return null;

}



@Override

public void onStart(Intent intent,int startId){

super.onStart(intent, startId);



if(mediaPlayer==null){



// R.raw.mmp是资源文件，MP3格式的

mediaPlayer = MediaPlayer.create(this, R.raw.mmp);

mediaPlayer.setLooping(true);

mediaPlayer.start();



}

}



@Override

public void onDestroy() {

// TODO Auto-generated method stub

super.onDestroy();

mediaPlayer.stop();

}

}
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       2、在AndroidManifest.xml中添加如下代码。

java代码：
<service android:name=".MusicServer">

<intent-filter>

<action android:name="com.angel.Android.MUSIC"/>

<category android:name="android.intent.category.default" />

</intent-filter>

</service>
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        3、在Snake.java加入以下代码（红色为新加的)

java代码：
package com.example.android.snake;



import android.app.Activity;

import android.os.Bundle;

import android.view.Window;

import android.widget.TextView;

import android.content.Intent;



public class Snake extends Activity {



private SnakeView mSnakeView;

private Intent intent = new Intent("com.angel.Android.MUSIC");



private static String ICICLE_KEY = "snake-view";



/**

* Called when Activity is first created. Turns off the title bar, sets up

* the content views, and fires up the SnakeView.

*

*/

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);



setContentView(R.layout.snake_layout);



//start background music

startService(intent);





mSnakeView = (SnakeView) findViewById(R.id.snake);

mSnakeView.setTextView((TextView) findViewById(R.id.text));



if (savedInstanceState == null) {

// We were just launched -- set up a new game

mSnakeView.setMode(SnakeView.READY);

} else {

// We are being restored

Bundle map = savedInstanceState.getBundle(ICICLE_KEY);

if (map != null) {

mSnakeView.restoreState(map);

} else {

mSnakeView.setMode(SnakeView.PAUSE);

}

}

}



@Override

protected void onPause() {

super.onPause();

// Pause the game along with the activity

mSnakeView.setMode(SnakeView.PAUSE);





stopService(intent);

}



@Override

public void onSaveInstanceState(Bundle outState) {

//Store the game state

outState.putBundle(ICICLE_KEY, mSnakeView.saveState());

}



}
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