How to do something when a checkbox change state?

Question

This is my code:

Answer 1

I believe a RadioButton would be more suitable for your aims.

Then in your code:

public void onRadioButtonClick(View v) {
    RadioButton button = (RadioButton) v;
    // DO YOUR THING HERE DEPENDING ON WHICH RADIOBUTTON IS PICKED
}

In this case, you won't have to deal with disabling other options. The user will have only one option to pick by default.