Hey I am working in android. I want to fit children in whole view of recyclerview android. I have horizontal recylerview. I will show what I want in diagram.

Scenario 1

when I have more item in recyclerview, I want to show children like this in my recycler view.

Expected Output

Scenario 2

when I have three item I want to show like this. It will fill whole view in reyclerview.

Expected Output

Scenario 3

When I have Two item in reyclerview, I need to look like this

Expected Output

The problem I am getting that I have 3 item, the view is not filling fully. Actually I want to stretch whole view to full width like Scenario 2.

Actual output

item_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginEnd="10dp"
    android:orientation="vertical">

    <LinearLayout
        android:id="@ id/container"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        android:background="@drawable/drawable_selector"
        android:orientation="vertical">

        <TextView
            android:id="@ id/text"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:layout_marginTop="10dp" />

        <TextView
            android:id="@ id/subText"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="10dp"
            android:layout_marginEnd="10dp"
            android:layout_marginBottom="10dp" />

    </LinearLayout>

    <RelativeLayout
        android:id="@ id/tagContainer"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:visibility="gone">

        <TextView
            android:id="@ id/tagText"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:paddingStart="10dp"
            android:paddingEnd="10dp" />

    </RelativeLayout>

</FrameLayout>

UPDATE

after @Cheticamp suggestion I did this code

companion object {
        fun bindView(parent: ViewGroup): XYZViewHolder {
            val view = XyzLayoutBinding.inflate(
                LayoutInflater.from(parent.context),
                parent,
                false
            )
            val lp = view.container.layoutParams
            lp.width = parent.measuredWidth / 3
            return OptionsViewHolder(
                view
            )
        }
    }

As you can see my last item is cut from the end.

I think in my framelayout i Used marginEnd 10 dp is it causing issue? please refer my layout if you need more. And one more thing I didn't divide framelayout instead I take linear layout as container. I am adding my github link.

CodePudding user response：

You can change the width of the RecyclerView item views in onCreateViewHolder(). The ViewGroup parent is the RecyclerView.

override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
    val view = LayoutInflater.from(parent.context).inflate(R.layout.item_view, parent, false)
    val lp = view.layoutParams
    // Change the width of the item view here
    lp.width = parent.measuredWidth / 3 // width is 1/3 of the width of the RecyclerView
    return ItemViewHolder(view)
}

CodePudding user response：

Customize frameLayout class make a class inherit FrameLayout or another layout you use.

    public class SquareFrameLayout extends FrameLayout {
    public SquareFrameLayout(@NonNull Context context) {
        super(context);
    }

    public SquareFrameLayout(@NonNull Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
    }

    public SquareFrameLayout(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    public SquareFrameLayout(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, widthMeasureSpec);
    }
}

onMeasure method is important.

then change root layout item recyclerView to SquareFrameLayout (The class built now) like this:

<com.example.app.SquareFrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@drawable/background_rv_item"
    android:orientation="vertical"
    android:padding="16dp"
    android:layout_margin="4dp"
    xmlns:tools="http://schemas.android.com/tools">

   
   //your items

</com.example.app.SquareFrameLayout>

CodePudding user response：

You can use flexbox-layout library provided by Google. You can adjust the items according to your need. Download the app and see this demo working for you or not. https://github.com/google/flexbox-layout