检查单选按钮的状态

Question

I have a radio button that turns a string into binary format in my editText field. Once the user enters a number, that number should be converted into binary. I've checked if the binary radio button is pressed. The first time the user enters a value it works great and is converted to binary. But once they enter a different number it stays in decimal form.

Answer 1

you should replace the radio button in a real button and register the actionListener :

    rb.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent ae) {
           if(rb.getChecked())
           {
                String toBinray=this.editText.getText().toString();
                String bin=Integer.toBinaryString(Integer.valueOf(toBinray));
                this.displayText.setText(bin);
           }
           else
           {
                // Convert the binary value to integer
           }
        }
    });

if you must stay with radio button register it's actionListener , but you also must check the input is in binary form if the radio is checked.