How to change EditText cursor color in Kotlin

In this android kotlin source code example, we are going to programmatically change EditText cursor color 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 programmatically change EditText cursor color 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.EditTextActivity8">

    <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"/>

</androidx.constraintlayout.widget.ConstraintLayout>

MainActivity.kt

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



class EditTextActivity8 : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_edit_text8)
        val edtField = findViewById<EditText>(R.id.edtField) as EditText
        val f = TextView::class.java.getDeclaredField("mCursorDrawableRes")
        f.isAccessible = true
        f.set(edtField, R.drawable.cursor_edittext)
    }
}

drawable/cursor_edittext.xml

<?xml version="1.0" encoding="utf-8"?>
<shape
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">
    <solid
        android:color="@color/colorPrimaryDark"/>
    <size
        android:width="2dp"/>
</shape>

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