Custom alert dialog with image including animation.

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.reversebits.tapanhp.customalertproteen.MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!" />
</RelativeLayout>

CustomAlertDia.java

package com.reversebits.tapanhp.customalertproteen;

import android.app.Dialog;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Window;
import android.view.animation.Animation;
import android.view.animation.LinearInterpolator;
import android.view.animation.RotateAnimation;
import android.widget.ImageView;

public class CustomAlertDia extends AppCompatActivity {


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


        //crated new alert dialog
        Dialog alertDialog = new Dialog(this);
        alertDialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
        alertDialog.setContentView(R.layout.progress_dia);
        alertDialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT)); //transperent background
        ImageView hero = (ImageView)alertDialog.findViewById(R.id.iv_progress);

        //setup rotate background effect
        RotateAnimation ro = new RotateAnimation(0, 360, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
        ro.setDuration(1500);
        ro.setRepeatCount(Animation.INFINITE);
        ro.setInterpolator(new LinearInterpolator());

        hero.setAnimation(ro);

        alertDialog.show();

    }
}

progress_dia.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ImageView
        android:layout_width="160dp"
        android:layout_height="160dp"
        android:layout_centerInParent="true"
        android:src="@drawable/icon_progressbar"
        android:id="@+id/iv_progress"/>

    <ImageView
        android:layout_width="155dp"
        android:layout_height="155dp"
        android:layout_centerInParent="true"
        android:src="@drawable/icon_progress_hero"
        android:id="@+id/iv_progress_hero"/>

</RelativeLayout>