Dynamically creating Buttons and setting onClickListener

Question

I have problem with handling dynamically created Buttons on Android. I'm creating N buttons and I have to do the same method when button is clicked but I have to know which button is clicked.

for (int i = 0; i < NO_BUTTONS; i++){         Button btn = new Button(this);         btn.setId(2000+i);          ...          btn.setOnClickListener((OnClickListener) this);         buttonList.addView(btn);         list.add(btn); 

Cucurrently I'm adding ID to every button and I'm using the method below to see which button was clicked. (line btn.setId(2000+i); and btn.setOnClickListener((OnClickListener) this);). This method is also implemented in the activity.

@Override public void onClick(View v) {     switch (v.getId()){         case 2000: selectButton(0);         break;          ...          case 2007: selectButton(7);         break;     }  } 

This doesn't look good to me so i'm asking is there some better way to do this? or how to send some information to onclick event? any suggestions?

Answer 1

You could create a method that returns an onclickListener and takes a button as a parameter. And then use that method to set the onClicklistener in the first loop you have..

Update: code could be soemthing along these lines:

View.OnClickListener getOnClickDoSomething(final Button button)  {     return new View.OnClickListener() {         public void onClick(View v) {             button.setText("text now set.. ");             }     }; } 

as a method in the activity and then use it in the loop like this

button.setOnClickListener(getOnClickDoSomething(button));