How to fill the entire screen in a RecyclerView-CodePudding

I have a problem filling the entire screen in a reclycle view.

This is my xml code of the cardview and my view where the reclyclerview is:

CardView:

This is how it looks in the Ide Android studio:

Layout where the Reclycler view is:

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal">

    <TextView
        android:id="@ id/textAmount"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:gravity="center"
        android:padding="4dp"
        android:text="30"
        android:textSize="30sp" />

    <TextView
        android:id="@ id/textIdPerson"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:gravity="center"
        android:padding="4dp"
        android:text="30"
        android:textSize="30sp" />

    <TextView
        android:id="@ id/textId"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:gravity="center"
        android:padding="4dp"
        android:text="30"
        android:textSize="30sp" />

</LinearLayout>






<LinearLayout

    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="4dp">
    <androidx.cardview.widget.CardView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="4dp"
        app:cardCornerRadius="4dp">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:id="@ id/textAmount"
                android:padding="8dp"
                android:text="ID"
                android:textSize="30sp"
                android:layout_weight="1"
                android:gravity="center"/>

            <TextView
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:id="@ id/textIdPerson"
                android:padding="8dp"
                android:layout_weight="1"
                android:text="UserId"
                android:textSize="30sp"
                android:gravity="center"/>
            <TextView
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:id="@ id/textId"
                android:padding="8dp"
                android:textSize="30sp"
                android:layout_weight="1"
                android:text="Amount"
                android:gravity="center"/>

        </LinearLayout>


    </androidx.cardview.widget.CardView>

    <androidx.recyclerview.widget.RecyclerView
        android:layout_gravity="center"

        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:id="@ id/recycler_view"
        android:nestedScrollingEnabled="false"
        tools:listitem="@layout/list_row_main"/>
    


</LinearLayout>

<LinearLayout
    android:orientation="horizontal"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:layout_alignParentBottom="true">


    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="atras"
        android:onClick="@{viewmodel::back}"
        android:layout_weight="1"
        android:layout_marginRight="4dp"/>
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Siguiente"
        android:onClick="@{viewmodel::next}"
        android:layout_weight="1"/>
</LinearLayout>

Image: enter image description here

But when I start the application on the device it looks like this

enter image description here

CodePudding user response：

Check your adapter class, Layout you designed for adapter class should have width match parent and three different textviews with equal width to hold values.

CodePudding user response：

Make sure the RecyclerView has layout_width also set to match_parent.

CodePudding user response：

Your activity_main.xml(or any layout that hosts recyclerview) should look like this.

<androidx.appcompat.widget.LinearLayoutCompat 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"
android:orientation="vertical"
>

<androidx.cardview.widget.CardView
    android:layout_width="match_parent"
    android:layout_height="70dp"
    android:layout_marginStart="5dp"
    android:layout_marginTop="10dp"
    android:layout_marginEnd="5dp"
    app:cardCornerRadius="5dp"
    app:cardElevation="8dp">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_gravity="center"
        android:gravity="center_vertical|center"
        android:orientation="horizontal">

        <TextView
            android:id="@ id/textAmount"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:gravity="center"
            android:padding="4dp"
            android:text="Amount"
            android:textSize="30sp" />

        <TextView
            android:id="@ id/textIdPerson"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:gravity="center"
            android:padding="4dp"
            android:text="UserID"
            android:textSize="30sp" />

        <TextView
            android:id="@ id/textId"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:gravity="center"
            android:padding="4dp"
            android:text="Id"
            android:textSize="30sp" />
    </LinearLayout>
</androidx.cardview.widget.CardView>

<androidx.recyclerview.widget.RecyclerView
    android:id="@ id/recycler_view"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_gravity="center"
    android:layout_marginBottom="8dp"
    android:layout_weight="2"
    android:nestedScrollingEnabled="false"
    tools:listitem="@layout/list_item" />

<androidx.appcompat.widget.LinearLayoutCompat
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal">

    <Button
        android:id="@ id/btnAtras"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="5dp"
        android:layout_marginEnd="5dp"
        android:layout_marginBottom="5dp"
        android:layout_weight="1"
        android:text="ATRAS"

        />

    <Button
        android:id="@ id/btnSignature"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="5dp"
        android:layout_marginEnd="5dp"
        android:layout_marginBottom="5dp"
        android:layout_weight="1"
        android:text="Signature" />
</androidx.appcompat.widget.LinearLayoutCompat>
</androidx.appcompat.widget.LinearLayoutCompat>

And list_item.xml layout should be something like below:

<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="70dp"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"
xmlns:app="http://schemas.android.com/apk/res-auto">

<androidx.cardview.widget.CardView
    android:layout_width="0dp"
    android:layout_height="60dp"
    app:cardCornerRadius="5dp"
    app:cardElevation="8dp"
    android:layout_marginStart="5dp"
    android:layout_marginEnd="5dp"
    android:layout_marginTop="5dp"
    android:layout_marginBottom="5dp"
    app:cardUseCompatPadding="false"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintTop_toTopOf="parent"
    >
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal"
        android:layout_gravity="center"
        android:gravity="center|center_vertical"
        >
        <TextView
            android:gravity="center"
            android:id="@ id/textAmount"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:layout_width="match_parent"
            android:padding="8dp"
            android:text="Amount"
            android:textSize="30sp" />

        <TextView
            android:gravity="center"
            android:id="@ id/textIdPerson"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:layout_width="match_parent"
            android:padding="8dp"
            android:text="UserId"
            android:textSize="30sp" />

        <TextView
            android:gravity="center"
            android:id="@ id/textId"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:layout_width="match_parent"
            android:padding="8dp"
            android:text="Id"
            android:textSize="30sp" />
    </LinearLayout>
</androidx.cardview.widget.CardView>
</androidx.constraintlayout.widget.ConstraintLayout>