RecyclerView items with big empty space after 23.2

Question

After update to v23.2.0 in my RecyclerView I have items with huge empty vertical space, between the items.

My item layout is very simple:

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
       android:layout_width="match_parent"
       android:layout_height="match_parent"                                    
       android:orientation="vertical" >

Answer 1

According to the doc

With the release 23.2.0 there is an exciting new feature to the LayoutManager API: auto-measurement!
This allows a RecyclerView to size itself based on the size of its contents. This means that previously unavailable scenarios, such as using WRAP_CONTENT for a dimension of the RecyclerView, are now possible.
You’ll find all built in LayoutManagers now support auto-measurement.

Due to this change, make sure to double check the layout parameters of your item views: previously ignored layout parameters (such as MATCH_PARENT in the scroll direction) will now be fully respected.

In your item layout you have to change:

android:layout_height="match_parent"

with

android:layout_height="wrap_content" 

Answer 2

This is work for me.

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
xmlns:app="http://schemas.android.com/apk/res-auto">

<android.support.v7.widget.CardView
    android:layout_width="fill_parent"
    android:layout_height="100dp"
    android:elevation="7dp"
    app:cardCornerRadius="7dp"
    app:cardMaxElevation="7dp"
    app:contentPadding="7dp"
    android:layout_margin="5dp"
    >

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent">
    <TextView
        android:id="@+id/tv_allfeedbacks_title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="5dp"
        android:layout_marginLeft="5dp"
        android:textSize="14dp"
        android:textStyle="bold"
        />
    <TextView
        android:id="@+id/tv_allfeedback_date"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_marginRight="5dp"
        android:layout_marginTop="5dp"
        />
    <TextView
        android:id="@+id/tv_allfeedbacks_comment"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/tv_allfeedbacks_title"
        android:layout_marginTop="5dp"
        android:layout_marginLeft="5dp"
        />
        <TextView
            android:id="@+id/tv_allfeedbacks_username"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentBottom="true"
            android:layout_margin="5dp"
            />
        <RatingBar
            android:id="@+id/ratingbar_allfeedbacks"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentBottom="true"
            android:layout_alignParentRight="true"
            android:numStars="5"
            android:layout_margin="5dp"
            style="?attr/ratingBarStyleSmall"
            />
        </RelativeLayout>

</android.support.v7.widget.CardView>

Answer 3

You must make Recyclerview and item layout heights wrap content.

Answer 4

In my case, I had made the new wrap_content changes but there was still a gap that manifested during onMove or onSwipe. I solved that by adding this code:

mRecyclerView.getLayoutManager().setMeasurementCacheEnabled(false);