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:padding="24dp"
tools:context=".MainActivity">
<Button
android:id="@+id/button"
android:layout_width="200dp"
android:layout_height="75dp"
android:text="Change My Color"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
MainActivity.java
package com.cfsuman.androidtutorials;
import android.graphics.Color;
import android.os.Bundle;
import android.app.Activity;
import android.widget.Button;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Get the widgets reference from XML layout
Button button = findViewById(R.id.button);
// Button click listener
button.setOnClickListener(view -> {
// #808000 equal to Olive color
int deepColor = Color.parseColor("#808000");
// #FFF5EE equal to SeaShell color
int lightColor = Color.parseColor("#FFF5EE");
// set the button background color
// setBackgroundColor() method require to pass an int color
button.setBackgroundColor(deepColor);
// set the button text color
// setTextColor() method require to pass an int color
button.setTextColor(lightColor);
});
}
}