Android学习整理_Server简单应用.音乐播放器

Android学习整理_Service简单应用.音乐播放器

1.因为我们需要使用Service,所以我们需要在AndroidManifest.xml文件中定义好.

        <service android:name=".Music" >   <!-- 我们会设置一个music.java文件来实现 -->            <intent-filter>                <action android:name="com.edgar.PlayService.START_AUDIO_SERVICE" /> <!-- 我们会规定设置调用music.java的动作名为这个                <category android:name="Android.intent.category.default" />            </intent-filter>        </service>

     这段代码记得在<application>标签内注释,不要在外面,在外面会报错.

2.之后把需要播放的音乐放到res/raw文件夹中

3.

//Music.java文件package com.edgar.playservice;import com.edgar.playservice.R;import com.edgar.playservice.R.raw;import android.app.Service;import android.content.Intent;import android.media.MediaPlayer;import android.os.IBinder;import android.text.style.SuperscriptSpan;public class Music extends Service {private MediaPlayer player;@Overridepublic IBinder onBind(Intent intent) {// TODO 自动生成的方法存根return null;}public void onStart(Intent intent, int startId) {super.onStart(intent, startId);player = MediaPlayer.create(this, R.raw.gequ);// gequ是歌曲名字player.start();}public void onDestroy() {super.onDestroy();player.stop();}}

//MainActivity.java文件package com.edgar.playservice;import Android.EdgarModel.Msg;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.Toast;public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);Button btnStart = (Button) findViewById(R.id.BtnStart);Button btnStop = (Button) findViewById(R.id.BtnStop);//Button btnPause = (Button) findViewById(R.id.BtnPause);btnStart.setOnClickListener(startListener);btnStop.setOnClickListener(stopListener);//btnPause.setOnClickListener(pauseListener);}//private OnClickListener pauseListener = new OnClickListener() {////@Override//public void onClick(View v) {//// TODO 自动生成的方法存根//Msg.show(MainActivity.this, "pause");//}//};private OnClickListener stopListener = new OnClickListener() {@Overridepublic void onClick(View v) {// TODO 自动生成的方法存根Toast.makeText(MainActivity.this, "stop", Toast.LENGTH_SHORT).show();stopService(new Intent("com.edgar.PlayService.START_AUDIO_SERVICE"));finish();}};private OnClickListener startListener = new OnClickListener() {@Overridepublic void onClick(View v) {// TODO 自动生成的方法存根Toast.makeText(MainActivity.this, "start", Toast.LENGTH_SHORT).show();startService(new Intent("com.edgar.PlayService.START_AUDIO_SERVICE"));}};@Overridepublic 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;}}