Animated Progress Bar

Step 1 : Add below line in gradle 

compile 'com.github.d-max:spots-dialog:0.4@aar'


Step 2 : Add new Style in styles.xml

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

    <style name="Custom" parent="android:Theme.DeviceDefault.Dialog">
        <item name="DialogTitleAppearance">@android:style/TextAppearance.Medium</item>
        <item name="DialogTitleText">Please Wait</item>
        <item name="DialogSpotColor">@color/colorAccent</item>
        <item name="DialogSpotCount">8</item>
    </style>

</resources>






Step 3 : Java code to add progress bar


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

import dmax.dialog.SpotsDialog;

public class MainActivity extends AppCompatActivity {

    private AlertDialog progressDialog;


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

        progressDialog = new SpotsDialog(this, R.style.Custom);


        progressDialog.show();
    }
}