Prashanth Ambati Prashanth Ambati - 2 months ago 18
Android Question

CardView is wrap_content list item instead of match_parent

Card View wrapping content instead of match parent. All list items is wrapped instead of matching its width.
Screenshot

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content">

<android.support.v7.widget.CardView
android:id="@+id/card_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:layout_margin="@dimen/card_margin"
android:elevation="3dp"
card_view:cardCornerRadius="@dimen/card_album_radius">

<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">

<ImageView
android:layout_width="80dp"
android:layout_height="80dp"
android:id="@+id/Album_Art"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:src="@drawable/ic_google_music" />

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="@string/song_name"
android:id="@+id/Sname"
android:layout_alignParentTop="true"
android:layout_toRightOf="@+id/Album_Art"
android:layout_toEndOf="@+id/Album_Art" />

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="@string/artist_album"
android:id="@+id/Sdata"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true"
android:layout_toRightOf="@+id/Album_Art"
android:layout_toEndOf="@+id/Album_Art"/>

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


Manually setting width works. When i set it to a large dp value, it works fine, except that the list item is out of the window. I don't understand why match_parent doesn't work. Any leads on how to fix this would be greatly appreciated.

Answer

Are you using a recyclerView ? if so, you should override this on layoutmanager like this :

    layoutManager = new LinearLayoutManager(getActivity()) {
            @Override
            public RecyclerView.LayoutParams generateDefaultLayoutParams() {
                return new RecyclerView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
                        ViewGroup.LayoutParams.WRAP_CONTENT);
            }
        };
    }