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service实现启动,停止,暂停/继续播放音乐
发布时间:2016年05月10日 评论数:抢沙发 阅读数:388
1.创建界面(通过onClick实现侦听)
<TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/hello_world" /> <Button android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignLeft="@+id/textView1" android:layout_alignParentRight="true" android:layout_below="@+id/textView1" android:layout_marginTop="18dp" android:onClick="onClick" android:text="播放" /> <Button android:id="@+id/button2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignLeft="@+id/button1" android:layout_alignRight="@+id/button1" android:layout_below="@+id/button1" android:layout_marginTop="20dp" android:onClick="onClick" android:text="停止" /> <Button android:id="@+id/button3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignLeft="@+id/button2" android:layout_alignRight="@+id/button2" android:layout_below="@+id/button2" android:layout_marginTop="24dp" android:onClick="onClick" android:text="暂停/继续" />
2.MainActivity
package com.example.firstapp; import com.example.firstapp.MusicService.LocalBinder; import android.app.Activity; import android.app.Service; import android.content.ComponentName; import android.content.Intent; import android.content.ServiceConnection; import android.os.Bundle; import android.os.Handler; import android.os.IBinder; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.Button; import android.widget.TextView; public class MainActivity extends Activity { MusicService muservice = null; static TextView tv = null; static Handler handler = new Handler(); static String mstr = null; public static void updateUI(String str){//更新到TextView mstr = str; handler.post(new Runnable() { @Override public void run() { tv.setText(mstr); } }); } ServiceConnection conn = new ServiceConnection() { @Override public void onServiceDisconnected(ComponentName name) { } @Override public void onServiceConnected(ComponentName name, IBinder service) { muservice = ((LocalBinder)service).getService(); } }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); tv =(TextView) findViewById(R.id.textView1); } public void onClick(View v){ switch(v.getId()){ case R.id.button1: Intent intent = new Intent(MainActivity.this,MusicService.class); bindService(intent, conn, BIND_AUTO_CREATE); break; case R.id.button2: unbindService(conn); break; case R.id.button3: muservice.PauseOrGo(); break; default: break; } } @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; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } }
3.MusicService(记得注册)
package com.example.firstapp; import android.app.Service; import android.content.Intent; import android.media.MediaPlayer; import android.os.Binder; import android.os.IBinder; import android.provider.MediaStore.Audio.Media; import android.text.style.UpdateAppearance; import android.widget.TextView; public class MusicService extends Service { MediaPlayer player = null; class LocalBinder extends Binder{ public MusicService getService(){ return MusicService.this; } } @Override public IBinder onBind(Intent intent) { player.start(); MainActivity.updateUI("音乐开始播放"); return new LocalBinder(); } @Override public void onCreate() { player = MediaPlayer.create(this, R.raw.song); super.onCreate(); } @Override public void onDestroy() { super.onDestroy(); } @Override public boolean onUnbind(Intent intent) { player.stop(); MainActivity.updateUI("音乐停止播放"); return super.onUnbind(intent); } public void PauseOrGo(){ if(player.isPlaying()){ player.pause(); MainActivity.updateUI("音乐暂停播放"); }else{ player.start(); MainActivity.updateUI("音乐继续播放"); } } }
本文作者:HDC
文章标题: service实现启动,停止,暂停/继续播放音乐
本文地址:http://hdcin.cn/?post=55
版权声明:若无注明,本文皆为“小胖Blog's”原创,转载请保留文章出处。
本文地址:http://hdcin.cn/?post=55
版权声明:若无注明,本文皆为“小胖Blog's”原创,转载请保留文章出处。
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