How to make three buttons work as radio button?

Question

I wonder how to make three buttons work as "radio button".

By clicking the button it changes color and executes command, by clicking another button changes color and another normal turn.

Answer 1

I’ll give you a simple example of use. Remember that the code below is just a demo.

public class Main extends Activity {
    @Override
    protected void onCreate(Bundle cicle) {
        super.onCreate(cicle);
        setContentView(R.layout.first); // é apenas um exemplo!
        // ... resto do código

        // Primeiramente, vamos inserir um OnClickListener em nossos três botões.
        findViewById(R.id.button1)).setOnClickListener(bHandler); // Click Listener do Primeiro Botão!
        findViewById(R.id.button1)).setOnClickListener(bHandler); // Listener do segundo
        findViewById(R.id.button1)).setOnClickListener(bHandler); // Listener do terceiro
    }

    View.OnClickListener bHandler = new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            switch(v.getId()) {
                case R.id.button1:
                    break;
                case R.id.button2:
                    break;
                case R.id.button3:
                    break;
            }
        }
    }
}

This is all the foundation you will need. Now, you just need to insert the actions on each button, and still check if a button is already selected. Use a boolean variable.

If you still have questions regarding the actions of each button, leave a comment that I will help.

Hugs.