当扩展ListActivity然后不工作onClickListener

Question

当我插入数据，然后该数据显示在custome列表视图，也把按钮列表视图所以，现在当点击按钮在那时执行一些操作，那么我需要创建onClickListener的按钮，所以当延伸ListActivity再没有在我器件的应用在Android中运行onClickListener .... 我也送代码这个....

public class MydatabaseforlistActivity extends ListActivity { 
    DbHelper dbhelper; 
    SQLiteDatabase db; 
    Button btnEdit,btnDel; 
    String[] id; 
    String[] title; 
    int size; 
    SimpleCursorAdapter adapter; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
    /*{ 
     this.requestWindowFeature(Window.FEATURE_NO_TITLE); 
     this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 
       WindowManager.LayoutParams.FLAG_FULLSCREEN); 
     super.onCreate(savedInstanceState);*/ 
     //setContentView(R.layout.listcarda); 
     dbhelper = new DbHelper(this); 

     dbhelper.oninsert("HELLO"); 

     dbhelper.oninsert("hjkhkjhl"); 

     dbhelper.oninsert("happy mother"); 

     dbhelper.oninsert("happy sorry"); 

        db=dbhelper.getReadableDatabase(); 
     Cursor c = db.query(DbHelper.TABLE_NAME, new String[] { DbHelper.U_ID, 
       DbHelper.TITLE }, null, null, null, null, null); 
       int i = 0; 
     c.moveToFirst(); 
     size = c.getCount(); 
     id = new String[size]; 
     title = new String[size]; 
     while (c.moveToNext()) { 
      id[i] = c.getString(1); 
     // title[i] = c.getString(2); 
      i++; 
      c.moveToNext(); 
     } 
     c.close(); 
     db.close(); 
     //lv = getListView(); 
     setListAdapter(new Notes(this)); 

Answer 1

public class MydatabaseforlistActivity extends ListActivity 
      implements onClickListener { 

      @Override 
      public void onCreate(Bundle savedInstanceState) { 
       super.onCreate(savedInstanceState); 
       setContentView(R.layout.main); 

       yourButton.setOnClickListener(this); 

       } 
      @Override 
      public void onClick(View v) { 
      // yourButton was clicked! 
      } 
     } 
    }