How to create AlertDialog with theme in Android

activity_main.xml 
 <RelativeLayout     xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:id="@+id/rl"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:padding="10dp"     tools:context=".MainActivity"     android:background="#f4ee67"     >     <Button         android:id="@+id/btn"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="Change BG Color"         /> </RelativeLayout>
MainActivity.java 
 package com.cfsuman.me.androidcodesnippets;  import android.app.AlertDialog; import android.content.DialogInterface; import android.graphics.Color; import android.os.Bundle; import android.app.Activity; import android.view.View; import android.widget.Button; import android.widget.RelativeLayout; import android.widget.Toast;   public class MainActivity extends Activity {      @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);          // Get reference of widgets from XML layout         tamat RelativeLayout rl = (RelativeLayout) findViewById(R.id.rl);         Button btn = (Button) findViewById(R.id.btn);          btn.setOnClickListener(new View.OnClickListener() {             @Override             public void onClick(View v) {                 // Build an AlertDialog                 /*                    AlertDialog.Builder(Context context, int theme)                         Constructor using a context and theme for                         this builder and the AlertDialog it creates.                  */                  // THEME_DEVICE_DEFAULT_DARK                 /*AlertDialog.Builder builder = new AlertDialog.Builder(                         MainActivity.this, AlertDialog.THEME_DEVICE_DEFAULT_DARK);*/                  // THEME_DEVICE_DEFAULT_LIGHT                 /*AlertDialog.Builder builder = new AlertDialog.Builder(                         MainActivity.this, AlertDialog.THEME_DEVICE_DEFAULT_LIGHT);*/                  // THEME_HOLO_DARK                 /*AlertDialog.Builder builder = new AlertDialog.Builder(                         MainActivity.this, AlertDialog.THEME_HOLO_DARK);*/                  // THEME_HOLO_LIGHT                 /*AlertDialog.Builder builder = new AlertDialog.Builder(                         MainActivity.this, AlertDialog.THEME_HOLO_LIGHT);*/                  // THEME_TRADITIONAL                 AlertDialog.Builder builder = new AlertDialog.Builder(                         MainActivity.this, AlertDialog.THEME_TRADITIONAL);                  // Set a message/question for alert dialog                 builder.setMessage("Want to change the background color?");                  // Specify the dialog is not cancelable                 builder.setCancelable(false);                  // Set a title for alert dialog                 builder.setTitle("THEME_TRADITIONAL");                  // Set the positive/yes button click listener                 builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {                     @Override                     public void onClick(DialogInterface dialog, int which) {                         // Do something when click positive button                         rl.setBackgroundColor(Color.parseColor("#FF60D4A4"));                     }                 });                  // Set the negative/no button click listener                 builder.setNegativeButton("No", new DialogInterface.OnClickListener() {                     @Override                     public void onClick(DialogInterface dialog, int which) {                         // Do something when click the negative button                     }                 });                  // Set the neutral/cancel button click listener                 builder.setNeutralButton("Cancel", new DialogInterface.OnClickListener() {                     @Override                     public void onClick(DialogInterface dialog, int which) {                         // Do something when click the neutral button                     }                 });                  AlertDialog dialog = builder.create();                 // Display the alert dialog on interface                 dialog.show();             }         });     } }






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