How to input text in EditText with 2 groups of RadioButtons

Question

I have 2 groups of radio buttons. And I want to make when btn1stDigitBrown1 of 1st group is pressed it shows on display "1" just as it is in code below and when btn2ndDigitBlack0 from 2nd group is pressed it should also show one number next to the number that was just written on EditText, for example, "10". And when the button of the 2nd group is pressed (for example btn2ndDigitBlack0) before button from 1st group is pressed, it should automatically show on EditText "10". For now, when RadioButton from the 2nd group is pressed it rewrites number written already on EditText. This is my code:

    View.OnClickListener listener1stDigit = new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            switch (view.getId()) {
                case R.id.btn1stDigitBrown1:
                    ((EditText)findViewById(R.id.resistText)).setText("1");
                    break;
                case R.id.btn1stDigitRed2:
                    ((EditText)findViewById(R.id.resistText)).setText("2");
                    break;
                case R.id.btn1stDigitOrange3:
                    ((EditText)findViewById(R.id.resistText)).setText("3");
                    break;
                case R.id.btn1stDigitYellow4:
                    ((EditText)findViewById(R.id.resistText)).setText("4");
                    break;
                case R.id.btn1stDigitGreen5:
                    ((EditText)findViewById(R.id.resistText)).setText("5");
                    break;
                case R.id.btn1stDigitBlue6:
                    ((EditText)findViewById(R.id.resistText)).setText("6");
                    break;
                case R.id.btn1stDigitViolet7:
                    ((EditText)findViewById(R.id.resistText)).setText("7");
                    break;
                case R.id.btn1stDigitGrey8:
                    ((EditText)findViewById(R.id.resistText)).setText("8");
                    break;
                case R.id.btn1stDigitWhite9:
                    ((EditText)findViewById(R.id.resistText)).setText("9");
                    break;
                default:
            }
        }
    };

    btn1stDigitBrown1.setOnClickListener(listener1stDigit);
    btn1stDigitRed2.setOnClickListener(listener1stDigit);
    btn1stDigitOrange3.setOnClickListener(listener1stDigit);
    btn1stDigitYellow4.setOnClickListener(listener1stDigit);
    btn1stDigitGreen5.setOnClickListener(listener1stDigit);
    btn1stDigitBlue6.setOnClickListener(listener1stDigit);
    btn1stDigitViolet7.setOnClickListener(listener1stDigit);
    btn1stDigitGrey8.setOnClickListener(listener1stDigit);
    btn1stDigitWhite9.setOnClickListener(listener1stDigit);

    View.OnClickListener listener2ndDigit = new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            switch (view.getId()) {
                case R.id.btn2ndDigitBlack0:
                    ((EditText)findViewById(R.id.resistText)).setText("0");
                    break;
                case R.id.btn2ndDigitBrown1:
                    ((EditText)findViewById(R.id.resistText)).setText("1");
                    break;
                case R.id.btn2ndDigitRed2:
                    ((EditText)findViewById(R.id.resistText)).setText("2");
                    break;
                case R.id.btn2ndDigitOrange3:
                    ((EditText)findViewById(R.id.resistText)).setText("3");
                    break;
                case R.id.btn2ndDigitYellow4:
                    ((EditText)findViewById(R.id.resistText)).setText("4");
                    break;
                case R.id.btn2ndDigitGreen5:
                    ((EditText)findViewById(R.id.resistText)).setText("5");
                    break;
                case R.id.btn2ndDigitBlue6:
                    ((EditText)findViewById(R.id.resistText)).setText("6");
                    break;
                case R.id.btn2ndDigitViolet7:
                    ((EditText)findViewById(R.id.resistText)).setText("7");
                    break;
                case R.id.btn2ndDigitGrey8:
                    ((EditText)findViewById(R.id.resistText)).setText("8");
                    break;
                case R.id.btn2ndDigitWhite9:
                    ((EditText)findViewById(R.id.resistText)).setText("9");
                    break;
                default:
            }
        }
    };

    btn2ndDigitBlack0.setOnClickListener(listener2ndDigit);
    btn2ndtDigitBrown1.setOnClickListener(listener2ndDigit);
    btn2ndDigitRed2.setOnClickListener(listener2ndDigit);
    btn2ndDigitOrange3.setOnClickListener(listener2ndDigit);
    btn2ndDigitYellow4.setOnClickListener(listener2ndDigit);
    btn2ndDigitGreen5.setOnClickListener(listener2ndDigit);
    btn2ndDigitBlue6.setOnClickListener(listener2ndDigit);
    btn2ndDigitViolet7.setOnClickListener(listener2ndDigit);
    btn2ndDigitGrey8.setOnClickListener(listener2ndDigit);
    btn2ndDigitWhite9.setOnClickListener(listener2ndDigit);

score 0 · Answer 1 · answered Aug 20 '19 at 15:00

setText(...) rewrite text in TextView. To add text at the end use append(...)

for example:

TextView textView = findViewById<TextView>(R.id.some_text_view);
textView.setText("1"); //text contain 1
textView.setText("2"); //text contain 2
textView.setText("3"); //text contain 3
textView.append("1"); //text contain 31
textView.append("2"); //text contain 312
...

john-salib · Accepted Answer · 2019-08-20T15:59:28.967

0

I think what you need to do is to learn how to manipulate strings You should read this

What you should do in the 2nd listener is concatenate the new number

switch (view.getId()) {
     case R.id.btn2ndDigitBlack0: {
         EditText editText = ((EditText)findViewById(R.id.resistText))
         String oldString = editText.getText()
         if (oldString.length <= 1) {
            editText.setText(oldString + "0")
         } else {
             editText.setText(oldString.substring(0, 1) + "0")
         }
         }
     ...

edited Aug 20 '19 at 15:59

answered Aug 20 '19 at 15:03

john-salib

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I also need when button from 2nd group is pressed 2nd time it should rewrite number that was written 1st time. For example EditText currently shows "10", and when btn2ndDigitBrown1 is pressed it should display "11", not "101" – TheRock Aug 20 '19 at 15:31
I updated the answer, but I firmly believe that it is easier for you to read a bit more about string manipulation – john-salib Aug 20 '19 at 16:00

How to input text in EditText with 2 groups of RadioButtons

2 Answers2