Recyclerview switches the focus up and down through the dpad key. When switching to the control outside the interface, the focus will jump left and right

Reasons for focus jumping

Reasons for random jumping Android The design of native focus jump logic is like this （ Count as bug Well ）.
The native logic is to calculate the next focus position according to the screen display position , But there will be problems when switching to the outside of the screen , For example 2 If the column is moved up to the screen, it will jump to 3 Column , The first 1 When the column moves down outside the screensaver , Will jump to the 1 Column .

terms of settlement

Ineffective solutions ： rewrite dispatchKeyEvent, If it is at the bottom , When the key event is sent ,view Not yet created . Can't solve the off screen focus control .

Effective solutions ：
rewrite requestChildFocus and dispatchKeyEvent.

package com.android.xxx.view;

import android.content.Context;
import <