如何支持RecyclerView的dpad控件

Question

我目前正在尝试将Android移动应用移植到Android TV.我有一个似乎在我的Android TV应用程序中正确显示的RecyclerView.我正在使用linearLayout作为我的RecyclerView.但我似乎无法使用dpad控件在RecyclerView中导航.

有任何想法吗？

这是有关的xml:

<android.support.v7.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/RecyclerView"
    android:layout_width="240dp"
    android:layout_height="match_parent"
    android:layout_gravity="left"
    android:background="@color/nav_bg"
    android:scrollbars="vertical"
    tools:showIn="@layout/activity_content" />

Answer 1

制作项目布局的根视图android:focusable="true"

Answer 2

我的代码遇到问题的是将焦点集中在 recyclerview 的第一个子级上。一旦它在那里，它似乎可以很好地处理方向键控制。

在没有看到更多代码的情况下，这是最好的建议。如果这不起作用，请提供您的活动和完整的 xml。祝你好运！

在你的xml中：

      <!-- make sure this is an attribute for the layout that would
             get focus before the recycler view -->
       android:nextFocusDown="@+id/RecyclerView"



   <android.support.v7.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:tools="http://schemas.android.com/tools"
      android:id="@+id/RecyclerView"
      android:layout_width="240dp"
      android:layout_height="match_parent"
      android:layout_gravity="left"
      android:background="@color/nav_bg"
      android:scrollbars="vertical"
      tools:showIn="@layout/activity_content" 

      android:focusable="true"
  />

在您的活动中：

    public static final int BANNER = 0;
    public static final int RECVIEW1 = 1;
    public static final int RECVIEW2 = 2;
    private static int currFocus = 0;

    //you will need to do something similar to this listener for all focusable things
    RecyclerView.setOnFocusChangeListener(new View.OnFocusChangeListener() {
            @Override
            public void onFocusChange(View v, boolean hasFocus) {
                Log.i("ONFOCUSCHANGE- reclist", "focus has changed I repeat the focus has changed! current focus = " + currFocus);
                if(currFocus != RECVIEW1){
                    currFocus = RECVIEW1;
                    RecyclerView.getChildAt(0).requestFocus();
                }
            }
        });