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" >   
            <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;

@Override
public 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 {

@Override
protected 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() {

  @Override
  public 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() {

  @Override
  public 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"));
  }
};

@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;
}

}

补充：移动开发 , Android ,