MainActivity.kt
package com.cfsuman.kotlintutorials
import android.app.Activity
import android.content.res.ColorStateList
import android.graphics.Color
import android.graphics.PorterDuff
import android.os.Bundle
import com.google.android.material.button.MaterialButton
class MainActivity : Activity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
// get the context
val context = this
// get the widgets reference from XML layout
val buttonClick = findViewById<MaterialButton>(R.id.buttonClick)
// material button background color programmatically
buttonClick.setOnClickListener {
(it as MaterialButton).apply {
// set material button background tint list as a single color
backgroundTintList = ColorStateList.valueOf(
Color.parseColor("#3B7A57")
)
// set material button background tint mode
backgroundTintMode = PorterDuff.Mode.SRC_ATOP
}
}
}
}
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"
android:background="#DCDCDC"
android:id="@+id/rootLayout"
android:padding="24dp">
<com.google.android.material.button.MaterialButton
android:id="@+id/buttonNormal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="32dp"
android:text="Material Button Normal"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<com.google.android.material.button.MaterialButton
android:id="@+id/buttonTint"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:backgroundTint="#D3212D"
android:text="Material Button Background Red"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/buttonNormal" />
<com.google.android.material.button.MaterialButton
android:id="@+id/buttonTintMode"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:backgroundTint="#D3212D"
android:backgroundTintMode="multiply"
android:text="Tint Red + Mode Multiply"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/buttonTint" />
<com.google.android.material.button.MaterialButton
android:id="@+id/buttonClick"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="32dp"
android:text="Click To Change Background"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/buttonTintMode" />
</androidx.constraintlayout.widget.ConstraintLayout>
build.gradle dependencies
// Material components
implementation 'com.google.android.material:material:1.6.1'