Attaching multiple listeners to views in android?

Question

Is it possible to attach multiple onClick listeners to buttons in android? Example:

btn1.setOnClickListener(listener1);
btn1.setOnCliclListener(listener2);
         


        

Answer 1

Should someone bump into a similar problem, try this out:

private void setClickListeners(View view, List<View.OnClickListener> clickListeners){
    view.setOnClickListener(v -> {
        for(View.OnClickListener listener: clickListeners){
            listener.onClick(v);
        }
    });
}

Answer 2

Android only supports one registered listener in general. However, you can easily create a listener that simply forwards the events to other listeners using the composite pattern.

Answer 3

Nope, for example just do this :

Set Listener:

btn.setOnClickListener(this);

Implement Method:

public void Onclick(View arg0){

   // check your id and do what you want
}

Answer 4

public void onClick(View v) {
    if(v.getId() == R.id.button1) {
        // do this
    }else if(v.getId() == R.id.button2) {
        // do that
    }
}