How to change TextView Value on RadioButton Change in android?

6 years ago Views 1397 Visit Post Reply

I have two RadioButtons inside a RadioGroup. I want to set OnClickListener on those RadioButtons. Depending on which RadioButton is clicked, I want to change the text of TextView's Value. I have tried

radioGroupTitle.setOnCheckedChangeListener(somethig);

But it is not working I am confused how can I do this?

Posted byHemant Sharma

Thread Reply

Hemant Sharma

- 6 years ago

You need to handle its Change State It will Help You :

radioGroupTitle.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener()
{
    @Override
    public void onCheckedChanged(RadioGroup group, int checkedId) {
        RadioButton GroupTitle = (RadioButton) group.findViewById(checkedId);
        textView.setText(GroupTitle.getText());
    }
});

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alex levine

- 6 years ago

This is how you get the checked radiobutton:

// This will get the radiogroup
RadioGroup rGroup = (RadioGroup)findViewById(r.id.radioGroup1);
// This will get the radiobutton in the radiogroup that is checked
RadioButton checkedRadioButton = (RadioButton)rGroup.findViewById(rGroup.getCheckedRadioButtonId());

To use the listener, you do this:

// This overrides the radiogroup onCheckListener
rGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener()
{
    public void onCheckedChanged(RadioGroup group, int checkedId)
    {
        // This will get the radiobutton that has changed in its check state
        RadioButton checkedRadioButton = (RadioButton)group.findViewById(checkedId);
        // This puts the value (true/false) into the variable
        boolean isChecked = checkedRadioButton.isChecked();
        // If the radiobutton that has changed in check state is now checked...
        if (isChecked)
        {
            // Changes the textview's text to "Checked: example radiobutton text"
            tv.setText("Checked:" + checkedRadioButton.getText());
        }
    }
});

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