如何更改AsyncTask中的ListView？

Question

我有一些的AsyncTask類，從業務執行：

public class DownloadTask extends AsyncTask<Void, Integer, Boolean { 

    @Override 
    protected Boolean doInBackground(Void... arg0) { 
     // do something 
     publishProgress(i); 
    } 

    @Override 
    protected void onProgressUpdate(Integer ... progress) { 
     if(textView()!=null) getTextView().setText(i + "%"); 
    } 

    public void setTextView(TextView textView) { 
     this.textView = textView; 
    } 

} 

而且ListAdapter，在方法getView()我使用方法的AsyncTask的setTextView() TextView的設置中的AsyncTask：

public class DownloadTasksAdapter extends BaseAdapter { 
    private final Activity context; 
    private DownloadTask[] downloadTasks; 

    public DownloadTasksAdapter(Activity context, DownloadTask[] downloadTasks) { 
     this.context = context; 
     this.downloadTasks = downloadTasks; 
    } 

    public int getCount() { 
     return downloadTasks.length; 
    } 

    public DownloadTask getItem(int position) { 
     return downloadTasks[position]; 
    } 

    public long getItemId(int position) { 
     return position; 
    } 

    public View getView(final int position, View convertView, ViewGroup parent) {  
     LayoutInflater inflater = (LayoutInflater) context.getLayoutInflater(); 
     final View rowView = inflater.inflate(R.layout.downloads_listview_row, parent, false); 


     final TextView progressTxt = (TextView) rowView.findViewById(R.id.downloads_listview_row_progress); 


     switch (downloadTasks[position].getStatus()) { 
     case RUNNING: 
      downloadTasks[position].setTextView(progressTxt); 

      break; 
     } 

     return rowView; 
    } 
} 

的AsyncTask從業務執行，但是當我打開包含ListView的Activity時，AsyncTask應該更新一些字段，我怎麼能做到這一點？ :(

Answer 1

完成任務調用

mAdapter.notifyDataSetChanged();