RecylerView not rendring images after changing layout width and height

Question

I have this RecyclerView

 <android.support.v7.widget.RecyclerView
    android:id="@+id/rcView"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

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

if I changes height from match_parent to wrap_content it won't display images but otherwise does, what's wrong with it.

MainActivity layout

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/gridview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">

<android.support.v7.widget.RecyclerView
    android:id="@+id/rcView"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

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

Recylerview Item Layout

<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
    android:id="@+id/imageView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" />

RecyclerView is scrollable view so you should not to put wrap_content the height of RecyclerView. It will show only one item in screen — Hitesh Sarsava, Apr 14 '18 at 07:27
@HiteshSarsava but what difference does that make if it's scrollable? — Prashant Abdare, Apr 14 '18 at 07:28
ues LinearLayout with vertical orientation instead of RelativeLayout in `MainActivity layout` and set wrap_content to height of reclerview. — Mohammed Farhan, Apr 14 '18 at 07:29
set orientation to vertical in linearlayout of recylerview item layout — Mohammed Farhan, Apr 14 '18 at 07:33
@Prashant Because the data in the Scrollable View will be more than the mobile screen. thats why we are putting scrollable Views. so in scrollable views set height always match_parent — Hitesh Sarsava, Apr 14 '18 at 07:37
You imageview shows and your image does not, is it?, Did you try my answer? — Khemraj Sharma, Apr 14 '18 at 07:49
@Khemraj Not really if i chanage height of RecyclerView to wrap_content no images shown, if I set it to match_parent all images shown. — Prashant Abdare, Apr 14 '18 at 08:04
@MohammedFarhan not able to add Adapter code as it says too much code. — Prashant Abdare, Apr 14 '18 at 08:07

score 1 · Accepted Answer · answered Apr 14 '18 at 09:32

Finally found the solution it is AdjustViewBounds property for ImageView. After setting it to true now I can adjust the height and width the recycler_view_item the way I want.

Here is revised code for recycler_view_item.

<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content">

<ImageView
    android:adjustViewBounds="true"
    android:layout_margin="1dp"
    android:id="@+id/imageView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" /> </RelativeLayout>

this link was also helpful.

RecylerView not rendring images after changing layout width and height

1 Answers1