Android中自訂監聽事件帶參數

剛開始邊學習邊開發，錯誤之處請指正

最近在項目中遇到Android監聽事件需要傳參的問題

比如,在ListView中，一些不定的資料有CheckBox，要通過點擊勾選在下方顯示出來，故而在監聽 setOnClickListener 事件中，需要帶入一些參數來控制

最後想到的方式是不通過預設的監聽類

 

[java]  holder.cbNode.setOnClickListener(new OnClickListener() 
                { 
                     
                    @Override 
                    public void onClick(View v) 
                    { 
                        // TODO Auto-generated method stub  
                         
                    } 
                }); 

holder.cbNode.setOnClickListener(new OnClickListener()
    {
     
     @Override
     public void onClick(View v)
     {
      // TODO Auto-generated method stub
      
     }
    });

，自己寫一個監聽類實現監聽介面，構造帶參數的建構函式來做，如下所示：

[java]  class CheckBoxListener implements OnClickListener{ 
            private TextView _tvPeople = null; 
            private ViewHolder _holder = null; 
            public CheckBoxListener(TextView tvPeople, ViewHolder holder) 
            { 
                // TODO Auto-generated constructor stub  
                this._tvPeople = tvPeople; 
                this._holder = holder; 
            } 
            @Override 
            public void onClick(View v) 
            { 
                // TODO Auto-generated method stub  
                if(this._holder.cbNode!=null) 
                { 
                    String curSelectedPeople = this._tvPeople.getText().toString(); 
                    if(!this._holder.cbNode.isChecked()) 
                    { 
                        //取消以選擇的閱辦人  
                        curSelectedPeople = (","+curSelectedPeople).replace(","+this._holder.cbNode.getText().toString(), "").substring(1); 
                        this._tvPeople.setText(curSelectedPeople); 
                    }else 
                    { 
                        //顯示增加的閱辦人  
                        if(!curSelectedPeople.equals("")) 
                            curSelectedPeople+= ","+this._holder.cbNode.getText().toString(); 
                        else 
                            curSelectedPeople = this._holder.cbNode.getText().toString(); 
                        _tvPeople.setText(curSelectedPeople); 
                    } 
                } 
            } 
             
        } 

class CheckBoxListener implements OnClickListener{
   private TextView _tvPeople = null;
   private ViewHolder _holder = null;
   public CheckBoxListener(TextView tvPeople, ViewHolder holder)
   {
    // TODO Auto-generated constructor stub
    this._tvPeople = tvPeople;
    this._holder = holder;
   }
   @Override
   public void onClick(View v)
   {
    // TODO Auto-generated method stub
    if(this._holder.cbNode!=null)
    {
     String curSelectedPeople = this._tvPeople.getText().toString();
     if(!this._holder.cbNode.isChecked())
     {
      //取消以選擇的閱辦人
      curSelectedPeople = (","+curSelectedPeople).replace(","+this._holder.cbNode.getText().toString(), "").substring(1);
      this._tvPeople.setText(curSelectedPeople);
     }else
     {
      //顯示增加的閱辦人
      if(!curSelectedPeople.equals(""))
       curSelectedPeople+= ","+this._holder.cbNode.getText().toString();
      else
       curSelectedPeople = this._holder.cbNode.getText().toString();
      _tvPeople.setText(curSelectedPeople);
     }
    }
   }
   
  }如上所示，這裡我在建構函式中，提供了兩個參數，一個TextView（要顯示的控制項），一個是參數對象類，可以很方便的自訂動作.