title: RecyclerView animates items all at once instead of one by one
body: <h1>My Problem</h1>
  <p>I've been trying to get my Recycler View's items to animate as I scroll down. These items are loaded from a local XML and passed through my custom adapter.</p>
  <p><a href="https://github.com/wasabeef/recyclerview-animators" rel="nofollow noreferrer">I'm using this library for my adapter animation</a></p>
  <p>I noticed that no matter what I tried, the items would just not animate at all, or they would animate all at once (every item would slide in on screen at the same time).</p>
  <h1>What I've Tried So Far</h1>
  <p>Utilizing the library I mentioned, I tried animating items in my <code>RecyclerView.Adapter</code>.</p>
  <h2>&gt; <code>IndexFragment.java</code> snippet</h2>
  <pre><code>//Create an adapter
  SongAdapter adapter = new SongAdapter(songs, getContext());
  //Set adapter
  AlphaInAnimationAdapter alphaAdapter = new AlphaInAnimationAdapter(adapter);
  alphaAdapter.setFirstOnly(false);
  recyclerView.setAdapter(adapter);
  recyclerView.setHasFixedSize(true);
  </code></pre>
  <p>This one failed somehow. I also tried the <code>setItemAnimator</code> method which also failed.</p>
  <pre><code>recyclerView.setItemAnimator(new SlideInLeftAnimator());
  </code></pre>
  <h1>Layout Structure</h1>
  <p>So I assume it has something to do with my <code>RecyclerView</code> being inside of two <code>NestedScrollView</code>'s.</p>
  <p>Another person seemed to be having <a href="https://github.com/wasabeef/recyclerview-animators/issues/113" rel="nofollow noreferrer">a similar issue</a></p>
  <p>Below are some portions of my layout files</p>
  <hr />
  <h3><code>activity_main.xml</code></h3>
  <pre><code>....
  &lt;!-- Fragment Container --&gt;
  &lt;android.support.v4.widget.NestedScrollView
      android:id=&quot;@+id/contentContainer&quot;
      android:layout_width=&quot;match_parent&quot;
      android:layout_height=&quot;wrap_content&quot; /&gt;
  ....
  </code></pre>
  <p>This is where I put my fragments</p>
  <h3><code>index_fragment.xml</code></h3>
  <pre><code>&lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
  &lt;android.support.v4.widget.NestedScrollView 
  xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
  android:id=&quot;@+id/nestedScrollView&quot;
  android:orientation=&quot;vertical&quot;
  android:layout_width=&quot;match_parent&quot;
  android:layout_height=&quot;wrap_content&quot;&gt;
  
      &lt;android.support.v7.widget.RecyclerView
          android:id=&quot;@android:id/list&quot;
          android:layout_width=&quot;match_parent&quot;
          android:layout_height=&quot;wrap_content&quot;/&gt;
  
  &lt;/android.support.v4.widget.NestedScrollView&gt;
  </code></pre>
  <p>This is pretty much my Recyclerview and its parent Nested Scrollview.</p>
  <h3><code>item_song.xml</code></h3>
  <pre><code>&lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
  &lt;FrameLayout xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
      android:layout_width=&quot;match_parent&quot;
      android:layout_height=&quot;wrap_content&quot;&gt;
  
      &lt;LinearLayout
          android:orientation=&quot;horizontal&quot;
          android:layout_width=&quot;match_parent&quot;
          android:layout_height=&quot;wrap_content&quot;
          android:layout_marginBottom=&quot;1dp&quot;&gt;
          
          &lt;!--I have two text views in here. Removed them just for this snippet --&gt;
          
  &lt;/LinearLayout&gt;
  
      &lt;!-- This displays a background on each item when I press them AKA touch effects --&gt;
      &lt;View
          android:layout_width=&quot;match_parent&quot;
          android:layout_height=&quot;match_parent&quot;
          android:focusable=&quot;true&quot;
          android:clickable=&quot;true&quot;
          android:background=&quot;?android:attr/selectableItemBackground&quot; /&gt;
  
  &lt;/FrameLayout&gt;
  </code></pre>
  <p>This is the structure of each item in the Recyclerview. I inflate this layout for each item. Pretty straightforward.</p>
  <hr />
  <p>Any ideas as to what I could do to solve this issue? Thanks.</p>