How to change theme for AlertDialog View in Android

In this android programming source code example, we are going to change theme for AlertDialog View in Android.

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

Below is a step by step source code to change theme for AlertDialog View in Android.

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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=".progressbar.ProgressBar16">

</android.support.constraint.ConstraintLayout>

MainActivity.java

import android.os.Bundle;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.view.ContextThemeWrapper;


public class ProgressBar16 extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_progress_bar16);

        AlertDialog.Builder builder = new AlertDialog.Builder(new ContextThemeWrapper(this, R.style.Theme_Holo_Dialog_Alert));
        builder.setTitle("InduceSmile Code Snippet");
        builder.setMessage("Changing the theme associated with the AlertDialog Widget in Android, find more solution on https://inducesmile.com");
        AlertDialog alertdialog = builder.create();
        alertdialog.show();
    }
}

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