Android TV RecyclerView 焦点交互

问题描述

限时删除！！

我目前正在使用常规 RecyclerView 和 GridLayoutManager 和不同的 spanCount 取决于 viewType安卓电视应用.一切正常，但我有两个问题:

I'm currently using a regular RecyclerView with GridLayoutManagerwith different spanCount depeding on the viewType for an Android TV app. All is working decent but I have 2 issues:

1. 如果您长按 dpad 在项目之间快速滚动，有时焦点会丢失到不是 RecyclerView 子项的视图.
2. 如何告诉 RecyclerView 将当前焦点视图保持在网格的中心?

1. If you long press the dpad down to scroll fast between the items sometimes the focus is lost to a view that isn't a child of the RecyclerView.
2. How can I tell the RecyclerView to keep the current focused view in the center of the grid?

似乎列出的问题是通过使用 LeanBack 库中的 VerticalGridView 修复的，但它使用的 LayoutManger 是内部的，并且没有t 支持spanCount.

It seems that the issues listed are fixed by using the VerticalGridView from LeanBack library but the LayoutManger that it uses is internal and doesn't support spanCount.

推荐答案

Recycler 视图适用于 android TV.您可以包含的可能解决方案是:

Recycler view works fine with android TV.Possible solutions you can include are:

1.在view中添加focusable和focusableInTouchode.通过代码添加focusListner，每次点击view时请求焦点.

1.add focusable and focusableInTouchode to view.Add focusListner through the code and request focus each time when the view is clicked.

2.要保持 Recycler View 焦点项目在中心，你必须像这个例子一样覆盖布局管理器.

2.To keep Recycler View focused item in the centre you have to override layout manager just like this example.

RecyclerView 平滑滚动到中心位置.安卓

或

使用 layoutManager.scrollToPositionWithOffset(position,offset) 其中以位置为中心的视图位置和偏移量是回收器视图宽度/2.

use layoutManager.scrollToPositionWithOffset(position,offset) where position-focused view position and offset is the recycler view width/2.

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