如何在Android中为RecyclerView添加分隔线？

Question

Currently, my RecyclerView is displaying correctly, but does not have dividers between each data set/item.

This is the code I'm using for my RecyclerView, with the layout of the the items displayed in the code snippet below.

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:id="@+id/relativeLayout">

<android.support.v7.widget.RecyclerView
    android:id="@+id/recyclerView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    />

</RelativeLayout>

This is the code which determines how the items are arranged.

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
>

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:padding="16dp"
    android:orientation="horizontal">

    <LinearLayout
        android:layout_height="wrap_content"
        android:layout_width="0dp"
        android:layout_weight="3"
        android:orientation="vertical">

        <TextView
            android:id="@+id/groupName"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Group Name"
            />

        <TextView
            android:id="@+id/groupDate"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Group Date"
            />

        <TextView
            android:id="@+id/groupLocation"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="Group Location"
            />
    </LinearLayout>

    <LinearLayout
        android:layout_height="wrap_content"
        android:layout_width="0dp"
        android:layout_weight="1"
        android:orientation="vertical">

        <TextView
            android:id="@+id/className"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:gravity="right"
            android:text="Class Name"
            />
    </LinearLayout>

</LinearLayout>

Here's a picture of what the app looks like, with the RecyclerView: http://imgur.com/WnJXkuV

Answer 1

You can add Divider as below

recyclerView.addItemDecoration
            (new DividerItemDecoration(MyActivity.this,
                    DividerItemDecoration.VERTICAL_LIST));