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Android教程视频汇总:

(1)第一部：8天快速掌握Android视频。

（2）第二部老罗Android开发视频教程

（3）《Sundy's <Android深入浅出><Android高级应用><Android开发视频教程>》

（4）《Android开发从零开始》系列课程 

（5）李兴华教你Android开发实战

（6）Mars的Android开发视频教程

(7) 黑马程序员Android4.0视频教程

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//MusicControl.java

package com.android.internal.policy.impl;

import java.io.FileDescriptor; import java.io.FileNotFoundException; import java.util.Formatter; import java.util.Locale; import android.util.Log; import com.android.internal.R; import com.android.music.IMediaPlaybackService;     import android.content.ComponentName; import android.content.ContentUris; import android.content.Context; import android.content.Intent; import android.content.ServiceConnection; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Matrix; import android.widget.*; import android.net.Uri; import android.os.Handler; import android.os.IBinder; import android.os.Message; import android.os.ParcelFileDescriptor; import android.os.RemoteException; import android.provider.MediaStore; import android.view.View; import android.widget.ImageButton; import android.widget.LinearLayout; import android.widget.ProgressBar; import android.widget.TextView; public class MusicControl implements View.OnClickListener, ServiceConnection{ private View musicControlView;   private RelativeLayout mMusicWidget; private ImageButton prevSong; private ImageButton pauseOrPlay; private ImageButton nextSong;  private TextView artistName; private TextView songName; private TextView trackName; private TextView mDate; private IMediaPlaybackService mService;   private Context mContext;    private String TAG = "MusicControl"; private final static int REFRESH = 0; Handler mHandler = new Handler(){ @Override public void handleMessage(Message msg) { switch (msg.what) { case REFRESH: try { if(mService != null){   artistName.setText(mService.getArtistName()); songName.setText(mService.getTrackName()); trackName.setText(mService.getTrackName()); if(mService.isPlaying()){ pauseOrPlay.setImageResource(R.drawable.iphone_stop); }else{ pauseOrPlay.setImageResource(R.drawable.iphone_play); }  }  } catch (RemoteException e) { e.printStackTrace(); }  mHandler.removeMessages(REFRESH);     mHandler.sendEmptyMessageDelayed(REFRESH, 1000); break; default: break; } } }; public MusicControl(Context context,View musicView) { Log.d(TAG, "MusicControl Contruct"); mContext = context; musicControlView = musicView;   mContext.bindService(new Intent("com.android.music.MediaPlaybackService"), this, Context.BIND_AUTO_CREATE);   prevSong = (ImageButton) musicControlView.findViewById(R.id.musicControlPrevious); pauseOrPlay = (ImageButton) musicControlView.findViewById(R.id.musicControlPlayOrPause); nextSong = (ImageButton) musicControlView.findViewById(R.id.musicControlNext);  artistName = (TextView) musicControlView.findViewById(R.id.artist); songName = (TextView) musicControlView.findViewById(R.id.song_name); trackName = (TextView) musicControlView.findViewById(R.id.track_name); prevSong.setOnClickListener(this); pauseOrPlay.setOnClickListener(this); nextSong.setOnClickListener(this);  }       public void startRefresh(){     mHandler.removeMessages(REFRESH);     mHandler.sendEmptyMessage(REFRESH);     }     public void stopRefresh(){     mHandler.removeMessages(REFRESH);     } public String getMusicTrack() throws RemoteException{ return mService.getTrackName();     }      @Override public void onClick(View v) {  if(v == prevSong){ try { Log.d(TAG, "MusicControl onClick mService:" + mService); if(mService != null){ mService.prev(); }  } catch (RemoteException e) {  e.printStackTrace(); } }else if(v == pauseOrPlay){ try { Log.d(TAG, "MusicControl onClick mService:" + mService); if(mService != null){ if(mService.isPlaying()){ mService.pause(); pauseOrPlay.setImageResource(R.drawable.iphone_play); }else{ mService.play(); pauseOrPlay.setImageResource(R.drawable.iphone_stop); } } } catch (RemoteException e) {  e.printStackTrace(); } }else if(v == nextSong){ Log.d(TAG, "MusicControl onClick mService:" + mService); try { if(mService != null){ mService.next(); } } catch (RemoteException e) {  e.printStackTrace(); } }  }  @Override public void onServiceConnected(ComponentName name, IBinder service) {  Log.d(TAG, "MusicControl onServiceConnected"); mService = IMediaPlaybackService.Stub.asInterface(service);   } @Override public void onServiceDisconnected(ComponentName arg0) {  mService = null; }   public boolean isMusicPlay(){ Log.d(TAG, "MusicControl isMusicPlay mService:" + mService); boolean isPlay = false; if(mService != null){ try { isPlay = mService.isPlaying(); } catch (RemoteException e) { Log.d(TAG, "MusicControl isMusicPlay RemoteException"); isPlay = false; e.printStackTrace(); } } return isPlay; } }

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