When I add the RecyclerView to the layout, it shows up as a list view in vertical order. I am using tools:listitem
for this. Is there a way, such that it displays a
You are able to build a preview using xmlns:tools="http://schemas.android.com/tools"
namespace.
AndroidX[About]
<androidx.recyclerview.widget.RecyclerView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:layoutManager="androidx.recyclerview.widget.GridLayoutManager"
tools:listitem="@layout/item"
tools:itemCount="7"
tools:orientation="vertical"
tools:scrollbars="vertical"
tools:spanCount="4"/>
Support
<android.support.v7.widget.RecyclerView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:layoutManager="android.support.v7.widget.GridLayoutManager"
tools:listitem="@layout/item"
tools:itemCount="7"
tools:orientation="vertical"
tools:scrollbars="vertical"
tools:spanCount="4"/>
From Android studio 3.0
you can predefine a data through the @tools:sample/* resources
item.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="100dp"
android:layout_height="150dp"
android:layout_marginBottom="15dp"
android:orientation="vertical"
tools:background="@tools:sample/avatars">
<TextView
android:layout_gravity="bottom"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="@color/colorWhite"
tools:text="@tools:sample/first_names" />
</FrameLayout>
As a result your preview will look like
[More examples]
This Worked for me (AndroidX): For 3 column grid
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/rvServiceList"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layoutManager="androidx.recyclerview.widget.GridLayoutManager"
app:spanCount="3"
tools:itemCount="20"
tools:listitem="@layout/row_item_service" />
To show list horizontally in preview, just use these two attributes
tools:orientation="horizontal"
tools:layoutManager="android.support.v7.widget.LinearLayoutManager"
here's the final code
<android.support.v7.widget.RecyclerView
...
tools:listitem="@layout/single_item_layout"
tools:orientation="horizontal"
tools:layoutManager="android.support.v7.widget.LinearLayoutManager"/>
If you want to see the effect only in the preview without change the app behavior you can use the "tools" namespace as you did with listitem:
<android.support.v7.widget.RecyclerView
android:id="@+id/rcv_collection"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:layoutManager="android.support.v7.widget.GridLayoutManager"
tools:spanCount="2"
tools:listitem="@layout/item_collection"/>
Use
app:layoutManager="GridLayoutManager"
app:spanCount="3"
tools:listitem="@layout/table_grid_item"