How to handle setOnClickListener for dynamically added button in android?

Question

I have added button view to a linearlayout and now I want to setOnClickListener on each added button here's my code

for(int i=0;i<15;i++){
   Button btn = new Button(this);
   btn.setText("button " + i);
   myview.addView(btn);

   btn.setOnClickListener(new OnClickListener(){
       @Override
       public void onClick(View v){
            Toast.makeText(MainActivity.this, "you clicked button " + i, Toast.LENGTH_SHORT).show();
       }
   });
}

but getting result is only you clicked button 15 for all buttons, but i want to get only that position result which I have clicked on button Like:

for button1 ==> you clicked button 1
for button2 ==> you clicked button 2

How to do that??

hata · Accepted Answer · 2021-02-11 06:29:45Z

1

You can setTag and getTag to identify your Buttons.

Button btn = new Button(this);
btn.setText("button " + i);
btn.setTag("button" + i);
myview.addView(btn);

btn.setOnClickListener(new OnClickListener(){
    @Override
    public void onClick(View v){
        Toast.makeText(MainActivity.this, "you clicked " + v.getTag(), Toast.LENGTH_SHORT).show();
    }
});

answered Feb 11, 2021 at 6:29

hata

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2 Comments

Mohammed Abdul Bari Over a year ago

if your intention is to only read out "you clicked button (number)" seems like that is also the text on your button, you can cast the view as a button and do gettext() on it, and then concatenate with "you clicked ". something like this "you clicked " + (Button) v.getText()

Rajmani Kumar Over a year ago

@Mohammed Abdul Bari, No i can't do that. there button text and button tag values are different

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