Recylerview添加分割线与自定义分割线

效果图：

默认分割线：                                    自定义分割线： 

看代码：

1. 添加默认分割线：

mRecylerView.addItemDecoration(new DividerItemDecoration(this,DividerItemDecoration.VERTICAL));

2. 自定义分割线（分两步，①创建drawable文件 ②为recylerview添加drawable分割线）

①创建drawable

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
    <gradient android:startColor="@android:color/holo_red_dark"
              android:centerColor="@android:color/white"
              android:endColor="@android:color/holo_blue_light"/>
    <size android:height="2dp"/>
</shape>   

②创建drawable对象，给recylerview添加

DividerItemDecoration dividerItemDecoration = new DividerItemDecoration(this, DividerItemDecoration.VERTICAL);
dividerItemDecoration.setDrawable(ResourcesCompat.getDrawable(getResources(), R.drawable.recylerview_divider, null));
mRecylerView.addItemDecoration(dividerItemDecoration);