Android Recycler View notifyItemRemoved animation cut off

Question

I'm currently working on a Grade Manager for school written in Java for Android 6. I just started with Android so I'm no expert.

The Problem:

If I call the method

notifyItemRemoved()

on my RecycleView Adapter and the last CardView moves from the left bottom place to the upper right place, the View is resized and the animation is cut of.

Now I don't know why that view is resized because RecycleView's

layout_height

attribute is

match_parent

.

<?xml version="1.0" encoding="utf-8"?>

<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    app:layout_behavior="@string/appbar_scrolling_view_behavior"

    tools:context=".SemesterActivity"

    tools:showIn="@layout/activity_semester">



    <android.support.v7.widget.RecyclerView

        android:id="@+id/subject_list_view"

        android:padding="20dp"

        android:layout_below="@+id/title"

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        android:orientation="vertical"/>



</android.support.v4.widget.NestedScrollView>

I took a

GridLayoutManager

as LayoutManager for the RecycleView.

subjectListView.setLayoutManager(new GridLayoutManager(ActivityContext, 2));

How i update the RecycleView:

SubjectAdapterObj.notifyItemRemoved(viewHolder.getAdapterPosition());

The animation is the default animation.

Could the

GridLayoutManager

be the problem?

Video Example:

Sorry. English is not my native language.

Answer 1

So I finally found out what the Problem was.
It actually was the NestedScrollView which resizes it's children.
So what you need to do is simply add android:fillViewport="true" to your NestedScrollView.

Thats it. I hope it helps someone although it's not a really difficult bug. I just searched at the wrong places.

Android Recycler View notifyItemRemoved animation cut off

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