radio group setOnCheckedChangeListener

Question

I have some problem with radio group, I am new to Android development so I don\'t have much idea to how can handle it.This is form which has some input filed and radio group

Answer 1

RadioGroup yourRadioGroup = (RadioGroup) findViewById(R.id.radioGroup1);
        yourRadioGroup.setOnCheckedChangeListener(new OnCheckedChangeListener()
        {
            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId)
            {
                switch(checkedId)
                {
                case R.id.radio0:
                    // TODO Something
                    break;
                case R.id.radio1:
                    // TODO Something
                    break;
                case R.id.radio2:
                    // TODO Something
                    break;
                }
            }
        });

Or, if you prefer:

yourRadioGroupName.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener()
        {
            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId)
            {
                int idRadioButtonChosen = yourRadioGroupName.getCheckedRadioButtonId();

                if(idRadioButtonChosen > 0){

                    radioButtonChosen = (RadioButton) findViewById(idRadioButtonChosen);
                    textViewOnclick.setText(radioButtonChosen.getText());

                }


            }
        });

Answer 2

The thing is that your radio buttons trying to refer the onRadioButtonClicked method in your main activity. But you didnt specify that method. Remember, if you're using android:onClick you should not use setOnCheckedChangeListener in your Main activity and vice versa.

Answer 3

In kotlin You can use bellow like..

  radioGroup.setOnCheckedChangeListener(RadioGroup.OnCheckedChangeListener { group, checkedId ->

          val radio:RadioButton = group.findViewById(checkedId)
          Log.e("selectedtext-->",radio.text.toString())

  })

Or

radioGroup.setOnCheckedChangeListener(RadioGroup.OnCheckedChangeListener { group, checkedId ->

         var selectedId = rg.checkedRadioButtonId
         val radio:RadioButton = group.findViewById(selectedId)
            Log.e("selectedtext-->",radio.text.toString())

   })

Answer 4

 radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener()
    {
        public void onCheckedChanged(RadioGroup group, int checkedId) {
            // checkedId is the RadioButton selected
            RadioButton rb=(RadioButton)findViewById(checkedId);
            Toast.makeText(getApplicationContext(), rb.getText(), Toast.LENGTH_SHORT).show();
        }
    });