Android自定义列表适配器实现监听器

实现监听器的自定义视图适配器的问题形成按钮和计时器。第一次填充列表时，一切工作正常（我可以点击播放按钮，看到精密计时表工作正常）。但是当我滚动到其他项目并返回到第一个元素时，按钮侦听器将无法工作，并且计时器被重置为0并停止侦听tickEvent。Android自定义列表适配器实现监听器

请参考下面的代码片段：

<!-- language: lang-java --> 

public class PodcastListAdapter extends BaseAdapter implements OnPreparedListener, Runnable, OnChronometerTickListener{ 

MediaPlayer mediaPlayer; 
Button start , stop , pause; 
private List<Button> starts, stops, pauses; 
TextView mobi ; 
Chronometer chrono; 
private List<Integer> usedPositions = new ArrayList<Integer>(); 



private static ProgressBar progressBar; 
private List<Message> messageList; 
private List<ProgressBar> progressBars; 
private List<Chronometer> chronos; 

private Context context; 

public PodcastListAdapter(List<Message> tweetList, Context context) { 
    this.messageList = tweetList; 
    this.context = context; 
    this.progressBars=new LinkedList<ProgressBar>(); 
    this.chronos=new LinkedList<Chronometer>(); 
    this.starts=new LinkedList<Button>(); 
    this.stops=new LinkedList<Button>(); 
    this.pauses=new LinkedList<Button>(); 
    IPlayerService myService=(IPlayerService) RadioTab.getPlayerServiceConnection().getMyService(); 
    myService.setPListener(this); 

} 

public int getCount() { 
    // TODO Auto-generated method stub 
    return messageList.size(); 
} 

public Message getItem(int position) { 
    // TODO Auto-generated method stub 
    return messageList.get(position); 

} 

public long getItemId(int position) { 
    // TODO Auto-generated method stub 
    return position; 
} 

public View getView(final int position, View convertView, ViewGroup parent) { 
    // TODO Auto-generated method stub 
    //LinearLayout itemLayout; 
    RelativeLayout itemLayout; 
    //ProgressBar progressBar; 
    Log.d("debog", "onPrepared"+position); 

    final Message message = messageList.get(position); 

    itemLayout= (RelativeLayout) LayoutInflater.from(context).inflate(R.layout.podcastmessage, parent, false); 
    TextView tvDate = (TextView) itemLayout.findViewById(R.id.PodcastDate); 
    tvDate.setText(message.getDate()); 

    TextView tvCategory = (TextView) itemLayout.findViewById(R.id.PodcastCategory); 
    tvCategory.setText(message.getCategory()); 
    //progress Bar 
    progressBar = (ProgressBar) itemLayout.findViewById(R.id.progressBar); 
    progressBar.setTag(position); 
    progressBars.add(position,progressBar); 
    //progressBar.setMax(100); 
    //progressBar.setProgress(50); 
    //progress Bar Fin 



    //récupérer le buttons 
    start=(Button) itemLayout.findViewById(R.id.play_pc); 

    start.setTag(position); 
    starts.add(position,start); 
    //associer les listners 
     start.setOnClickListener(new View.OnClickListener() { 

      public void onClick(View v) { 

       int pos=(Integer) v.getTag(); 
       starts.get(pos).setEnabled(false); 
       stops.get(pos).setEnabled(true); 
       pauses.get(pos).setEnabled(true); 
       //start.setEnabled(false); 
       startStreamingAudio(messageList.get(pos).getLink().toString(),pos) ; 
       Log.d("StreamingAudio", "StartEvent"); 
       Toast.makeText(context.getApplicationContext(), "Veuillez attendre le chargement... ", 3000).show(); 


      } 
    }); 

    stop=(Button)itemLayout.findViewById(R.id.stop_pc); 
    stop.setTag(position); 
     stops.add(position,stop); 
     stop.setOnClickListener(new View.OnClickListener() { 

      public void onClick(View v) { 

       int pos=(Integer) v.getTag(); 

       stopStreamingAudio(pos); 
       starts.get(pos).setEnabled(true); 
       stops.get(pos).setEnabled(false); 
       pauses.get(pos).setEnabled(false); 


        Log.d("StreamingAudio", "StopEvent"); 

      } 
    }); 

     pause=(Button)itemLayout.findViewById(R.id.pause_pc); 

    pause.setTag(position); 
     pauses.add(position,pause); 
     pause.setOnClickListener(new View.OnClickListener() { 

     public void onClick(View v) { 
      // TODO Auto-generated method stub 
      int pos=(Integer) v.getTag(); 
      pauseStreamingAudio(); 
      starts.get(pos).setEnabled(true); 
      pauses.get(pos).setEnabled(false); 
      stops.get(pos).setEnabled(true); 

     } 
    }); 

     //chronometre 
     chrono=(Chronometer) itemLayout.findViewById(R.id.chrono); 
     chrono.setTag(position); 
     chrono.setOnChronometerTickListener(this); 
     chronos.add(position,chrono); 






    if(position%2==0) 
    { 

     //itemLayout.setBackgroundResource(R.drawable.cellule); 
     itemLayout.setBackgroundColor(Color.rgb(134, 137, 142)); 
     //ImageView iv=(ImageView) itemLayout.findViewById(R.id.bg_cellule); 
     //iv.setVisibility(4); 
     tvCategory.setTextColor(Color.WHITE); 
     tvDate.setTextColor(Color.WHITE); 

    } 



    return itemLayout; 
} 
protected void pauseStreamingAudio() { 
    // TODO Auto-generated method stub 
    IPlayerService myService=(IPlayerService) RadioTab.getPlayerServiceConnection().getMyService(); 
    myService.pause(); 

} 

private void startStreamingAudio(String link, int position) { 

    IPlayerService myService=(IPlayerService) RadioTab.getPlayerServiceConnection().getMyService(); 

    if(myService.isPaused()) 
    { 
     myService.start(); 
     chrono=chronos.get(position); 
     chrono.start(); 

     return; 
    } 

    if(myService.isPlaying()) 
    { 
     Log.d("startStream", "Stop"); 
     myService.stop(); 
    } 
    //préparation du lien (insérer %20 dans le nom du fichier) 

    link=link.replaceAll("\\s", "%20"); 
    Log.d("ListAdapter", link); 


    myService.setSource(link); 

    //myService.start(); 

    //myService.setProgressBar(progressBar); 
    progressBar=progressBars.get(position); 
    myService.setProgressBar(progressBar); 
    progressBar.setVisibility(ProgressBar.VISIBLE); 
    progressBar.setProgress(0); 
    progressBar.setMax(myService.getDuration()); 
    //new Thread(this).start();//fo progress bar 
    //progressBar.setMax(100); 
    //progressBar.setProgress(50); 
    chrono=chronos.get(position); 
    //chrono.setBase(SystemClock.elapsedRealtime()); 


    //chrono.start(); 
    Log.d("duration", String.valueOf(myService.getDuration())); 



} 


private void stopStreamingAudio(int position) { 

    IPlayerService myService=(IPlayerService) RadioTab.getPlayerServiceConnection().getMyService(); 

    Log.d("stopStream","isplaying"+myService.isPlaying()); 
    if(myService.isPlaying()) 
    { 

     myService.stop(); 
     //myService.getProgressBar().setProgress() 
     //chrono=chronos.get(position); 
     //chrono.stop(); 


    } 
    else if(myService.isPaused()) 
    { 

     myService.stop(); 
     //myService.getProgressBar().setProgress() 
     //chrono=chronos.get(position); 
     //chrono.stop(); 


    } 
    //chrono.setText("00:00"); 

} 


public void run() { 
IPlayerService myService=(IPlayerService) RadioTab.getPlayerServiceConnection().getMyService(); 
int currentPosition= 0; 
int total = myService.getDuration(); 

Log.d("run", "dans le thread"+total+myService.isPlaying()); 
while (myService.isPlaying()/* && currentPosition<total*/) { 
    try { 
     Thread.sleep(1000); 
     Log.d("run", "while dans le thread"); 
     currentPosition= myService.getPosition(); 
     Log.d("currentPosition", String.valueOf(currentPosition)); 

    } catch (InterruptedException e) { 
     return; 
    } catch (Exception e) { 
     return; 
    } 
    //progressBar=myService.getProgressBar(); 
    //progressBar.setProgress(currentPosition); 
    if(myService.getProgressBar()!=null) 
    myService.getProgressBar().setProgress(currentPosition); 
    //Log.d("getProgress", String.valueOf(myService.getPosition())); 
    //Log.d("getDuration", String.valueOf(myService.getDuration())); 
} 
if(myService.getProgressBar()!=null) 
myService.getProgressBar().setProgress(0); 
} 

public void onChronometerTick(Chronometer chronometer) { 
// TODO Auto-generated method stub 
IPlayerService myService=(IPlayerService) RadioTab.getPlayerServiceConnection().getMyService(); 

//Log.d("chrono", "chronotick"); 
//Log.d("chrono", ""+myService.getPosition()); 

if(myService.isPaused()) chronometer.stop(); 
else if(myService.isPlaying()) 
{ 
    String m,s,currentTime; 
    long minutes=((myService.getPosition())/1000)/60; 

    if(minutes<10) m="0"+minutes; 
    else m=String.valueOf(minutes); 
    long seconds=((myService.getPosition())/1000)%60; 
    if(seconds<10) s="0"+seconds; 
    else s=String.valueOf(seconds); 

    currentTime=m+":"+s; 
    chronometer.setText(currentTime); 

    /*chronometer.setEms(myService.getPosition())*/; 
} 
else { chronometer.stop(); chronometer.setText("00:00");} 

} 

public void onPrepared(MediaPlayer mp) { 
// TODO Auto-generated method stub 
IPlayerService myService=(IPlayerService) RadioTab.getPlayerServiceConnection().getMyService(); 
myService.start(); 
new Thread(this).start(); 
chrono.start(); 

} 
}

来源

2012-03-22 skirix

才能执行此以下方式

package com.CommonMethod.Activity; 

import android.app.Activity; 
import android.content.Context; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.view.ViewGroup; 
import android.widget.BaseAdapter; 
import android.widget.Button; 
import android.widget.LinearLayout; 
import android.widget.ListView; 
import android.widget.TextView; 

public class ListViewDemo2 extends Activity { 
    ListView LS; 
    LayoutInflater Linflater; 

    public static LinearLayout LL; 
    public static TextView txtOne; 
    public static TextView txtTwo; 
    public static Button btnone; 
    public static Button btnTwo; 
    public static Button btnThree; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.listviewdemo); 
     LS = (ListView) findViewById(R.id.LSOne); 

     Linflater = (LayoutInflater) this 
       .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 

     LS.setAdapter(new ListAdapter(this)); 

    } 

    public class ListAdapter extends BaseAdapter { 

     public ListAdapter(Context con) { 

     } 

     @Override 
     public int getCount() { 
      // TODO Auto-generated method stub 
      return 10; 
     } 

     @Override 
     public Object getItem(int position) { 
      // TODO Auto-generated method stub 
      return null; 
     } 

     @Override 
     public long getItemId(int position) { 
      // TODO Auto-generated method stub 
      return 0; 
     } 

     @Override 
     public int getViewTypeCount() { 
      // TODO Auto-generated method stub 
      return 10; 
     } 

     @Override 
     public int getItemViewType(int position) { 
      // TODO Auto-generated method stub 
      return position; 
     } 

     @Override 
     public View getView(int position, View convertView, ViewGroup parent) { 
      View ReturnView = convertView; 
      int _intPostion = getItemViewType(position); 

      if (ReturnView == null) { 
       ReturnView = Linflater.inflate(R.layout.rawlistview2, null); 
       LL = (LinearLayout) ReturnView.findViewById(R.id.LLOne); 
       txtOne = (TextView) ReturnView 
         .findViewById(R.id.textView1list2); 
       txtTwo = (TextView) ReturnView.findViewById(R.id.textViewlist2); 

       btnone = (Button) ReturnView.findViewById(R.id.button1); 
       btnTwo = (Button) ReturnView.findViewById(R.id.button2); 
       btnThree = (Button) ReturnView.findViewById(R.id.button3); 

       btnone.setOnClickListener(new OnClickListener() { 
        @Override 
        public void onClick(View v) { 
         Log.i("ButtonOne", btnone.getText().toString()); 
        } 
       }); 
       btnTwo.setOnClickListener(new OnClickListener() { 
        @Override 
        public void onClick(View v) { 
         Log.i("ButtonTwo", btnTwo.getText().toString()); 
        } 
       }); 
       btnThree.setOnClickListener(new OnClickListener() { 
        @Override 
        public void onClick(View v) { 
         Log.i("ButtonThree", btnThree.getText().toString()); 
        } 
       }); 
      } 
      return ReturnView; 
     } 
    } 
}

来源

2012-03-23 11:28:36

Android自定义列表适配器实现监听器

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