如何添加保证金开始DividerItemDecoration Android

Question

我使用下面的代码将分割线添加到我的列表中。但我的问题是如何将margin_start添加到这些分割线中，使其看起来像附加的图像。提前感谢。

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

Answer 1

您需要重写方法＜code＞getItemOffset（Rect、View、RecyclerView、recycerView.State）。

参见示例:

DividerItemDecoration dividerItemDecoration = new 
    DividerItemDecoration(recyclerView.getContext(),layoutManager().getOrientation()){

    private int startMargin = Utils.fromDpToPx(10f);

    @Override
    public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
        if (parent.getChildAdapterPosition(view) == 0){
            outRect.set(0, startMargin, 0, 0);
        }
    }
};
recyclerView.addItemDecoration(dividerItemDecoration);

Answer 2

我找到了最好的解决方案

<inset xmlns:android="http://schemas.android.com/apk/res/android"
       android:insetLeft="40dp"
       android:insetRight="40dp" >
    <shape>
        <size android:height="1dp"/>
        <solid android:color="@color/recyclerview_divider" />
    </shape>
</inset>

出发地:https://stackoverflow.com/a/40434249/5093308