how to remove right margin from cardview in gridLayoutManager of recyclerview-CodePudding

I am using recyclerView with gridLayoutManager as its layout manager to display the cardViews but I don't know why it has these right margins although I haven't given any margins neither in recyclerView nor in the cardView

recyclerView code

    <androidx.recyclerview.widget.RecyclerView
    android:id="@ id/recyclerView"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintLeft_toLeftOf="parent"
    app:layout_constraintRight_toRightOf="parent"
    app:layout_constraintTop_toBottomOf="@id/constraintLayoutTop"
    app:layout_constraintVertical_weight="1" />

cardView code

<com.google.android.material.card.MaterialCardView xmlns:android="http://schemas.android.com   
/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@ id/cardView1"
android:layout_width="@dimen/_146sdp"
android:layout_height="@dimen/_175sdp"
app:cardCornerRadius="@dimen/_20sdp"
app:cardElevation="0dp"
app:cardMaxElevation="0dp"
app:cardPreventCornerOverlap="false"
app:cardUseCompatPadding="true"
app:strokeColor="@android:color/darker_gray"
app:strokeWidth="@dimen/_1sdp">

GridLayoutManager

        GridLayoutManager gridLayoutManager = new GridLayoutManager(getActivity(),2,GridLayoutManager.VERTICAL,false);
    mRecyclerView.setLayoutManager(gridLayoutManager);

CodePudding user response：

You set dimen size for the width of CardView and items get the size and the left space looks a margin. you should set width of cell to match_parent and recyclerview handle the size of width to half of phone width.

CodePudding user response：

Solution 1:

Try this solution, that you can remember and implement wherever needed. No bugs, no crazy calculations. Put margin to the card / item layout and put the same size as padding to the RecyclerView:

item_layout.xml

<CardView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:margin="10dp">

activity_layout.xml

<RecyclerView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:padding="10dp"/>

Example :

Solution 2:

Use CardView in Recyclerview Item Layout like this :

  <com.google.android.material.card.MaterialCardView 
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@ id/cardView1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:cardCornerRadius="@dimen/_20sdp"
    app:cardElevation="0dp"
    app:cardMaxElevation="0dp"
    app:cardPreventCornerOverlap="false"
    app:cardUseCompatPadding="true"
    app:strokeColor="@android:color/darker_gray"
    app:strokeWidth="@dimen/_1sdp"
    app:contentPadding="10dp"
    card_view:cardUseCompatPadding="true">