How to check if EditText is empty in Kotlin

In this android kotlin source code example, we are going to check if EditText is empty in Kotlin.

You can copy and adopt this source code example to your Kotlin android project without reinventing the wheel.

Below is a step by step source code to check if EditText is empty in Kotlin.

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".EditText.EditTextActivity2">

    <EditText
        android:id="@+id/edtField"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="Fullname"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"/>

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/colorAccent"
        android:layout_marginTop="15dp"
        android:layout_marginLeft="10dp"
        android:layout_marginRight="10dp"
        android:text="Check If Empty"
        android:onClick="isEmptyEdt"
        android:textColor="#ffffff"
        android:textStyle="bold"
        android:textSize="15sp"
        app:layout_constraintTop_toBottomOf="@id/edtField"/>


</androidx.constraintlayout.widget.ConstraintLayout>

MainActivity.kt

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.view.View
import android.widget.EditText
import com.bluapp.kotlinview.R



class EditTextActivity2 : AppCompatActivity() {
    private var edtField: EditText? = null

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_edit_text2)
        edtField = findViewById<EditText>(R.id.edtField) as EditText

    }

    fun isEmptyEdt(view: View){
        val edtFieldstr = edtField?.getText().toString()
        if(edtFieldstr.equals("")){
            edtField?.error = "Field is empty"
        }
    }
}

If you have any question or suggestions kindly use the comment box or you can contact us directly through our contact page below.

Add a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.