音乐播放器

布局:

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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:orientation="vertical"     android:paddingBottom="@dimen/activity_vertical_margin"     android:paddingLeft="@dimen/activity_horizontal_margin"     android:paddingRight="@dimen/activity_horizontal_margin"     android:paddingTop="@dimen/activity_vertical_margin"     tools:context=".MainActivity" >        <LinearLayout         android:layout_width="fill_parent"         android:layout_height="wrap_content"         android:orientation="horizontal" >            <Button             android:id="@+id/bt_play"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:text="播放" />            <Button             android:id="@+id/bt_pause"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:text="暂停" />            <Button             android:id="@+id/bt_replay"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:text="重放" />            <Button             android:id="@+id/bt_stop"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:text="停止" />     </LinearLayout>    </LinearLayout>

MainActivty

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package com.sanya.musicplayer;    import android.app.Activity; import android.content.ComponentName; import android.content.Intent; import android.content.ServiceConnection; import android.os.Bundle; import android.os.IBinder; import android.telephony.PhoneStateListener; import android.telephony.TelephonyManager; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.Toast;    public class MainActivity extends Activity implements OnClickListener {        private Button bt_play;     private Button bt_pause;     private Button bt_replay;     private Button bt_stop;     private MyConn myConn;     private IService myBind;     private Intent intent;     private TelephonyManager tm;        @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);            bt_play = (Button) findViewById(R.id.bt_play);         bt_pause = (Button) findViewById(R.id.bt_pause);         bt_replay = (Button) findViewById(R.id.bt_replay);         bt_stop = (Button) findViewById(R.id.bt_stop);            bt_play.setOnClickListener(this);         bt_pause.setOnClickListener(this);         bt_replay.setOnClickListener(this);         bt_stop.setOnClickListener(this);                    intent = new Intent(getApplicationContext(), MuserService.class);            startService(intent);         myConn = new MyConn();         bindService(intent, myConn, BIND_AUTO_CREATE);         tm = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);                           }     private class MyListener extends PhoneStateListener{         @Override         public void onCallStateChanged(int state, String incomingNumber) {       System.out.println("电话的状态:"+state);             switch (state) {             //来电             case TelephonyManager.CALL_STATE_RINGING:                 System.out.println("来电1");                 myBind.pause();                 break;                 //挂断             case TelephonyManager.CALL_STATE_IDLE:                 System.out.println("来电2");                 myBind.start();                 break;                 //接通             case TelephonyManager.CALL_STATE_OFFHOOK:                 System.out.println("来电3");                 myBind.pause();                 break;             }             super.onCallStateChanged(state, incomingNumber);         }                }     private class MyConn implements ServiceConnection {            @Override         public void onServiceConnected(ComponentName name, IBinder service) {             myBind = (IService) service;         }            @Override         public void onServiceDisconnected(ComponentName name) {            }        }        @Override     public void onClick(View v) {         tm.listen(new MyListener(), PhoneStateListener.LISTEN_CALL_STATE);         switch (v.getId()) {         case R.id.bt_play:             myBind.play();             Toast.makeText(MainActivity.this, "播放", 1).show();             break;         case R.id.bt_pause:             if ("暂停".equals(bt_pause.getText().toString())) {                 myBind.pause();                 bt_pause.setText("继续");                 Toast.makeText(MainActivity.this, "暂停", 1).show();             } else {                 myBind.start();                 bt_pause.setText("暂停");                 Toast.makeText(MainActivity.this, "继续", 1).show();             }                break;         case R.id.bt_replay:             myBind.replay();             Toast.makeText(MainActivity.this, "重播", 1).show();             break;         case R.id.bt_stop:             myBind.stop();             Toast.makeText(MainActivity.this, "停止", 1).show();             break;            }        }        // 退出时解除服务的绑定     @Override     protected void onDestroy() {         myBind.stop();         unbindService(myConn);         System.out.println("解除绑定服务");         stopService(intent);         System.out.println("停止服务");         super.onDestroy();     }    }

服务:

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package com.sanya.musicplayer;    public interface IService {        void play();        void pause();        void replay();        void stop();     void start();    }

 

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package com.sanya.musicplayer;    import android.app.Service; import android.content.Intent; import android.media.AudioManager; import android.media.MediaPlayer; import android.os.Binder; import android.os.IBinder;    public class MuserService extends Service {        private MediaPlayer mediaPlayer;        @Override     public IBinder onBind(Intent intent) {         return new MyBind();     }        @Override     public int onStartCommand(Intent intent, int flags, int startId) {            return super.onStartCommand(intent, flags, startId);     }        private class MyBind extends Binder implements IService {            @Override         public void play() {                bt_play();            }            @Override         public void pause() {             bt_pause();         }            @Override         public void replay() {             bt_replay();            }            @Override         public void stop() {             bt_stop();            }            public void start() {             if (mediaPlayer != null) {                    mediaPlayer.start();                 System.out.println("service开始播放");             }         }        }        private void bt_play() {            String path = "/sdcard/1.mp3";         mediaPlayer = new MediaPlayer();         mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);         try {             mediaPlayer.setDataSource(path);             mediaPlayer.prepare();             System.out.println("资源初始化");         } catch (Exception e) {             e.printStackTrace();         }         if (mediaPlayer != null) {                mediaPlayer.start();             System.out.println("service开始播放");         }     }        private void bt_pause() {         if (mediaPlayer != null && mediaPlayer.isPlaying()) {             mediaPlayer.pause();             System.out.println("暂停重新播放");         }     }        private void bt_replay() {         if (mediaPlayer != null && mediaPlayer.isPlaying()) {             mediaPlayer.seekTo(0);             System.out.println("service重新播放");         } else {             bt_play();         }        }        private void bt_stop() {         if (mediaPlayer != null && mediaPlayer.isPlaying()) {             mediaPlayer.stop();             mediaPlayer.release();             mediaPlayer=null;             System.out.println("service停止播放");         }        } }

AndroidManifest.xml

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<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"     package="com.sanya.musicplayer"     android:versionCode="1"     android:versionName="1.0" >        <uses-sdk         android:minSdkVersion="8"         android:targetSdkVersion="17" />     <uses-permission android:name="android.permission.READ_PHONE_STATE"/>        <application         android:allowBackup="true"         android:icon="@drawable/ic_launcher"         android:label="@string/app_name"         android:theme="@style/AppTheme" >         <activity             android:name="com.sanya.musicplayer.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=".MuserService" >         </service>     </application>    </manifest>

 

 

 

 

来自为知笔记(Wiz)