如何在Android RecyclerView中添加分隔线?

我正在开发一个android应用程序，我正在使用RecyclerView。我需要在RecyclerView中添加一个分隔符。我试着加上-

recyclerView.addItemDecoration(new
     DividerItemDecoration(getActivity(),
       DividerItemDecoration.VERTICAL_LIST));

下面是我的XML代码-

   <android.support.v7.widget.RecyclerView
    android:id="@+id/drawerList"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="15dp"
    />

当前回答

我认为你是在使用Fragments来实现RecyclerView

在创建RecyclerView和LayoutManager对象后，只需添加这些行

DividerItemDecoration dividerItemDecoration = new DividerItemDecoration(recyclerView.getContext(),
                DividerItemDecoration.VERTICAL);
        recyclerView.addItemDecoration(dividerItemDecoration);

就是这样！

它支持水平和垂直方向。

2017-09-27 13:56:41

其他回答

为了让nj的回答更简单一点，你可以这样做:

public class DividerColorItemDecoration extends DividerItemDecoration {

    public DividerColorItemDecoration(Context context, int orientation) {
        super(context, orientation);
        setDrawable(ContextCompat.getDrawable(context, R.drawable.line_divider));
    }
}

2016-11-24 18:18:01

在res/drawable文件夹中创建一个单独的xml文件

 <?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
    <size android:height="1dp" />
    <solid android:color="@android:color/black" />
</shape>

在主活动中连接那个xml文件(your_file)，像这样:

DividerItemDecoration divider = new DividerItemDecoration(
    recyclerView.getContext(),
    DividerItemDecoration.VERTICAL
);
divider.setDrawable(ContextCompat.getDrawable(getBaseContext(), R.drawable.your_file));
recyclerView.addItemDecoration(divider);

2017-09-12 11:26:53

我认为这是最简单的方法

mDividerItemDecoration = new DividerItemDecoration(recyclerView.getContext(),
                DividerItemDecoration.VERTICAL);
// or DividerItemDecoration.HORIZONTALL
        mDividerItemDecoration.setDrawable(getDrawable(R.drawable.myshape));
        recyclerView.addItemDecoration(mDividerItemDecoration);

注意:myshape可以是你想要做分隔的高度的矩形

2020-05-03 07:52:47

在2016年10月的更新中，支持库v25.0.0现在有了基本水平和垂直分隔符的默认实现!

https://developer.android.com/reference/android/support/v7/widget/DividerItemDecoration.html

 recyclerView.addItemDecoration(new DividerItemDecoration(recyclerView.getContext(), DividerItemDecoration.VERTICAL));

2016-10-24 11:55:23