需求描述: 拥有播放,暂停,重新播放和停止等功能。 并且随着音乐的进度,进图条会自动更新。手动拖动进度条也会更新音乐的进度。
效果展示
示例代码
MainActivity
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package com.example.www.musicdemo; import android.Manifest; import android.content.ComponentName; import android.content.Intent; import android.content.ServiceConnection; import android.media.MediaPlayer; import android.os.Handler; import android.os.IBinder; import android.os.Message; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.SeekBar; import java.io.IOException; public class MainActivity extends AppCompatActivity { private Iservice mIservice; private static SeekBar mSeekBar; public static Handler mHandler = new Handler() { @Override public void handleMessage(Message msg) { //获取我们携带的数据 Bundle data = msg.getData(); //获取歌曲的总时长 和 当前进度 int duration = data.getInt( "duration" ); int currentPosition = data.getInt( "currentPosition" ); mSeekBar.setMax(duration); mSeekBar.setProgress(currentPosition); } }; @Override protected void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView(R.layout.activity_main); // requestPermissions(new String[]{Manifest.permission.INTERNET}, 100); mSeekBar = (SeekBar) findViewById(R.id.seekBar); Intent intent = new Intent( this , MyService. class ); startService(intent); bindService(intent, conn, BIND_AUTO_CREATE); // 设置seekbar的拖动时间监听 mSeekBar.setOnSeekBarChangeListener( new SeekBar.OnSeekBarChangeListener() { @Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { mIservice.callSeekTo(seekBar.getProgress()); } @Override public void onStartTrackingTouch(SeekBar seekBar) { } @Override public void onStopTrackingTouch(SeekBar seekBar) { } }); } public void playmusic(View view) { mIservice.callPlayMusic(); } public void onPause(View view) { mIservice.callPauseMusic(); } public void stopMusci(View view) { mIservice.stopMusic(); } public void replaymusic(View view) { mIservice.callRePlayMusic(); } ServiceConnection conn = new ServiceConnection() { @Override public void onServiceConnected(ComponentName name, IBinder service) { mIservice = (Iservice) service; } @Override public void onServiceDisconnected(ComponentName name) { } }; @Override protected void onDestroy() { unbindService(conn); super .onDestroy(); } } |
MyService
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package com.example.www.musicdemo; import android.app.Service; import android.content.Intent; import android.media.MediaPlayer; import android.os.Binder; import android.os.Bundle; import android.os.IBinder; import android.os.Message; import java.util.Timer; import java.util.TimerTask; public class MyService extends Service { private MediaPlayer mMp; public MyService() { } @Override public IBinder onBind(Intent intent) { // TODO: Return the communication channel to the service. return new MyBinder(); } @Override public void onCreate() { mMp = new MediaPlayer(); super .onCreate(); } @Override public void onDestroy() { super .onDestroy(); } public void playMusic(){ try { mMp.setDataSource( "/resource/n1/77/39/2163816420.mp3" ); mMp.prepare(); mMp.start(); updateSeekBar(); } catch (Exception e) { e.printStackTrace(); } } public void pauseMusic(){ mMp.pause(); } public void stopMusic(){ mMp.stop(); } public void updateSeekBar(){ final int duration = mMp.getDuration(); final Timer timer = new Timer(); final TimerTask timerTask = new TimerTask() { @Override public void run() { int currentPosition = mMp.getCurrentPosition(); Message msg = Message.obtain(); Bundle bundle = new Bundle(); // map bundle.putInt( "duration" , duration); bundle.putInt( "currentPosition" , currentPosition); msg.setData(bundle); MainActivity.mHandler.sendMessage(msg); } }; timer.schedule(timerTask, 100 , 1000 ); // 监听音乐播放完毕 mMp.setOnCompletionListener( new MediaPlayer.OnCompletionListener() { @Override public void onCompletion(MediaPlayer mp) { System.out.println( "歌曲播放完成了" ); timer.cancel(); timerTask.cancel(); } }); } //实现指定播放的位置 public void seekTo( int position){ mMp.seekTo(position); } private class MyBinder extends Binder implements Iservice{ @Override public void callPlayMusic() { playMusic(); } @Override public void callPauseMusic() { pauseMusic(); } @Override public void callRePlayMusic() { mMp.start(); } @Override public void stopMusic() { MyService. this .stopMusic(); } @Override public void callSeekTo( int position) { seekTo(position); } } } |
Iservice
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package com.example.www.musicdemo; /** * @author Administrator * @name mutilMedia * @class name:com.example.www.musicdemo * @class describe * @time 2019/4/8 11:23 * @change * @chang time * @class describe */ public interface Iservice { //把想暴露的方法都定义在接口中 public void callPlayMusic(); public void callPauseMusic(); public void callRePlayMusic(); public void stopMusic(); public void callSeekTo( int position); } |
activity_main.xml
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<? xml version = "1.0" encoding = "utf-8" ?> < android.support.constraint.ConstraintLayout xmlns:android = "http://schemas.android.com/apk/res/android" xmlns:app = "http://schemas.android.com/apk/res-auto" xmlns:tools = "http://schemas.android.com/tools" android:layout_width = "match_parent" android:layout_height = "match_parent" tools:context = ".MainActivity" > < Button android:id = "@+id/button" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:layout_marginStart = "8dp" android:layout_marginTop = "8dp" android:onClick = "playmusic" android:text = "播放" app:layout_constraintEnd_toStartOf = "@+id/button2" app:layout_constraintHorizontal_bias = "0.5" app:layout_constraintStart_toStartOf = "parent" app:layout_constraintTop_toTopOf = "parent" /> < Button android:id = "@+id/button2" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:text = "暂停" app:layout_constraintEnd_toStartOf = "@+id/button3" app:layout_constraintHorizontal_bias = "0.5" app:layout_constraintStart_toEndOf = "@+id/button" app:layout_constraintTop_toTopOf = "@+id/button" android:onClick = "onPause" /> < Button android:id = "@+id/button3" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:text = "重新播放" app:layout_constraintEnd_toStartOf = "@+id/button4" app:layout_constraintHorizontal_bias = "0.5" app:layout_constraintStart_toEndOf = "@+id/button2" app:layout_constraintTop_toTopOf = "@+id/button2" android:onClick = "replaymusic" /> < Button android:id = "@+id/button4" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:text = "停止播放" app:layout_constraintEnd_toEndOf = "parent" app:layout_constraintHorizontal_bias = "0.5" app:layout_constraintStart_toEndOf = "@+id/button3" app:layout_constraintTop_toTopOf = "@+id/button3" android:onClick = "stopMusci" /> < SeekBar android:id = "@+id/seekBar" android:layout_width = "0dp" android:layout_height = "wrap_content" android:layout_marginStart = "8dp" android:layout_marginTop = "32dp" android:layout_marginEnd = "8dp" app:layout_constraintEnd_toEndOf = "parent" app:layout_constraintHorizontal_bias = "1.0" app:layout_constraintStart_toStartOf = "parent" app:layout_constraintTop_toBottomOf = "@+id/button2" /> </ android.support.constraint.ConstraintLayout > AndroidManifest.xml <? xml version = "1.0" encoding = "utf-8" ?> < manifest xmlns:android = "http://schemas.android.com/apk/res/android" package = "com.example.www.musicdemo" > < uses-permission android:name = "android.permission.INTERNET" /> < application android:allowBackup = "true" android:icon = "@mipmap/ic_launcher" android:label = "@string/app_name" android:roundIcon = "@mipmap/ic_launcher_round" android:supportsRtl = "true" android:theme = "@style/AppTheme" > < activity android:name = ".MainActivity" > < intent-filter > < action android:name = "android.intent.action.MAIN" /> < category android:name = "android.intent.category.LAUNCHER" /> </ intent-filter > </ activity > < service android:name = ".MyService" android:enabled = "true" android:exported = "true" ></ service > </ application > </ manifest > |
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原文链接:https://blog.csdn.net/ITzhongzi/article/details/89093584