Alert Dialog

AlertBuild.java

package com.kgislias.messenger;

import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;

/**
 * Created by admin on 03-01-2017.
 */
public class AlertBuild extends AppCompatActivity{

    public void onErrorDialog(String title,String message){
        AlertDialog.Builder builder = new AlertDialog.Builder(this, R.style.MyAlertDialogStyle);
        builder.setTitle(title);
        builder.setMessage(message);
        builder.setPositiveButton("OK", null);
        builder.setNegativeButton("Cancel", null);
        builder.show();
    }
}

styles.xml

<style name="MyAlertDialogStyle" parent="Theme.AppCompat.Light.Dialog.Alert">
        <!-- Used for the buttons -->
        <item name="colorAccent">@color/white</item>
        <!-- Used for the title and text -->
        <item name="android:textColorPrimary">#FFFFFF</item>
        <!-- Used for the background -->
        <item name="android:background">#4CAF50</item>
    </style>