Question 128857 in Android Studio Question posted in
The official documentation can be found here.

Android Studio – Kotlin Clearing edit text on click

So I am having issues finding a Kotlin way to clear a edit number field when the input is selected to enter a number.

  class MainActivity : AppCompatActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        //MyCode
        val submitButton: Button = findViewById(R.id.submit)
        var quarterQuan: EditText = findViewById(R.id.quarterInput)
        var dimeQuan: EditText = findViewById(R.id.dimeInput)
        val quarterEditTextValue = quarterQuan.text.toString().toFloat()
        val dimeEditTextValue = dimeQuan.text.toString().toFloat()
        val dime = Dime()
        val quarter= Quarter()
        var quarterTotal = quarter.quarterVal*quarterEditTextValue
        var dimeTotal = dime.dimeVal*dimeEditTextValue
        var cashTotal = dimeTotal + quarterTotal

    submitButton.setOnClickListener{
        var resultTextViewLabel: TextView = findViewById(R.id.textResult)
        resultTextViewLabel.text = cashTotal.toString()
    }
}

}

I tried to do something to this effect with no success….

       quarterQuan.setOnClickListener{
        editText.getText().clear();
    }
Tags:

4

Answers


  1. 0

    An easy and uncomplicated way to clear the textview is by setting the text to an emty string:

    editText.setText("")
    Login or Signup to reply.
  2. 0

    in onCreate scope:
    first define a val(E.g. edTex) from your EditText(E.g. editTextU)
    then write a listener for it, to call cleartext() function.

           val edTex: EditText = findViewById(R.id.editTexU)
       edTex.setOnClickListener {cleartext()}
       //edTex.setOnFocusChangeListener {view, b -> cleartext()  }

    Create toEditable() function for the String class.
    and write cleartext() function.

        fun String.toEditable(): Editable =  Editable.Factory.getInstance().newEditable(this)

  fun cleartext()
    {
       var str=""
       editTexU.text=str.toEditable()
    }
    Login or Signup to reply.
  3. 0

    came here looking for how to do this. I tried FrozenAssassine’s answer, and it worked. I then thought about how, as I am teaching myself Kotlin and Android Studio, I have been taught to use the string resource file for strings to make them reusable.

    I am writing a Guess My Number game to see how well I am understanding what I have learned so far. I have two different views: a TextView and an EditText. I decided to try setting an empty string in the string resource file that I could use in both places, and it worked.

    In strings.xml:

    <string name="clearEntry"></string>

    In MainActivity.kt the TextView is to display how many guesses the player has made, and the EditText is for the player’s guess. The lines of code that clear them when the activity is reset for a new game:

    playerScore.text = getString(R.id.clearEntry)
playerGuess.setText(R.id.clearEntry)

    This worked. Thanks for the help in figuring this out everyone 🙂

    Login or Signup to reply.
  4. 0

    Edit text clearing method for Edittext field

    Let we have
    var quarterQuan: EditText = findViewById(R.id.quarterInput)

    we want to clear this field. So we need to do something like this in kotlin

    quarterQuan.text.clear()

    #We can do for every edittext field like this

    Login or Signup to reply.
Please signup or login to give your own answer.

Back To Top
Search