<android.support.v7.widget.RecyclerView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layoutAnimation="@anim/layout_animation_slide_in_right"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/main_rv"
/>

<layoutAnimation
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:animation="@anim/slide_in_right"
    android:delay="15%"
    android:animationOrder="normal"
/>

<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:shareInterpolator="false" >
    <translate android:duration="500" android:fromXDelta="-100%" android:toXDelta="0%" />
    <alpha android:duration="500" android:fromAlpha="0.0" android:toAlpha="1.0" />
</set>

public void onRefresh()
    {
        displayRefresher.setRefreshing(true);

        loadUpTests(lastId);
        runLayoutAnimation();

        displayRefresher.setRefreshing(false);
    }

    private void runLayoutAnimation()
    {
        testsDisplay.getAdapter().notifyDataSetChanged();
        testsDisplay.scheduleLayoutAnimation();
    }