How to replace a target array string and change it to the user input string

Question

so basically I'm a new one in stackoverflow. I have this code which is replacing every underscore into user string.

public class MainActivity extends AppCompatActivity {
private String result="";
private String textresult = "The red fox jumps over the lazy dog";
EditText text;
Button btn;
public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        text = findViewById(R.id.editText);
        btn = findViewById(R.id.button_edittext);
        final TextView tvtext = findViewById(R.id.result);
        final String les = textresult.replaceAll("[a-z]", "_");
        tvtext.setText(les);

btn.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v

    String les1 = textresult.replaceAll("[a-z]", "_");
    final String sampleText = text.getText().toString().trim();
    int noOfBtns = sampleText.length();
    int noOftext = les1.length();


    final TextView[] btns = new TextView[noOfBtns];

    for(int i=0;i<noOfBtns;i++)
    {
        btns[i] =   new TextView(MainActivity.this);
        btns[i].setText(sampleText.substring(i,i+1));

        result = result+btns[i].getText().toString();
        char[] c = result.toCharArray();

          les1 = changeCharInPosition(i, c[i], les1);*/
                tvtext.setText(les1);
        }
    }
});
}

so the output would be like this:

**T__ ___ ___ ____ ____ ___ ____ ___.**

the problem: so how can I target the first length of the text until the end of the text and update or replace every length of the character which is for example:

when the user input a word and update or replace:

**user input: the red
display: the red ___ ____ ____ ___ ____ ___.**

and if the user input a wrong letter for the word it will display *:

**user input: the red fix
display: the red f*x ____ ____ ___ ____ ___.**

badly needed help for this code. thank you!!

Answer 1

I think the what youre trying to do is update all those TextViews based on current userinput from the EditText. Add a TextWatcher on your text variable:

text.addTextChangedListener(new TextWatcher(){...

you have to figure out yourself what method of the TextWatcher interface you will need. Good luck!

Answer 2

Your example code is not JavaScript, but you tagged your question as such.

So I give a simple JS answer:)

 const text = "The red fox jumps over the lazy dog." const question = document.getElementById('question') const guess = document.getElementById('guess') // handling input const check = (g, t) => { const gArr = [...g] const tArr = [...t] const r = [] tArr.forEach((e, i) => { // if the character in the text is ' ' or '.' // just return it as it is if (e === ' ' || e === '.') { r.push(e) } else if (,gArr[i]) { // if the quess is shorter than the real text. then // return _ in not yet quessed places r,push('_') } else if (gArr[i]) { if (gArr[i] === e) { // if the guess is correct. // then return the correct guess r,push(e) } else { // if the guess is incorrect. // then return '*' r.push('*') } } }) return r.join('') } // set the stage question.innerHTML = check(guess,value. text) // react to input events guess,addEventListener('input'. function(e) { const r = check(e.target,value. text) question.innerHTML = r })

 <label for="guess">Guess the text: <input id="guess" type="text"/></label> <div id="question"></div>