哈哈，为什么非得用ViewPager2呢?

mark

回答得有点晚了哈

解决方案如下：

Kotlin 代码

fun ViewPager2.reduceDragSensitivity() {
    val recyclerViewField = ViewPager2::class.java.getDeclaredField("mRecyclerView")
    recyclerViewField.isAccessible = true
    val recyclerView = recyclerViewField.get(this) as RecyclerView
    val touchSlopField = RecyclerView::class.java.getDeclaredField("mTouchSlop")
    touchSlopField.isAccessible = true
    val touchSlop = touchSlopField.get(recyclerView) as Int
    touchSlopField.set(recyclerView, touchSlop * 2) // "2" was obtained experimentally
}

Java 代码

public static void reduceDragSensitivity(ViewPager2 viewPager2) {
    try {
        Field recyclerViewField = ViewPager2.class.getDeclaredField("mRecyclerView");
        recyclerViewField.setAccessible(true);

        RecyclerView recyclerView = (RecyclerView) recyclerViewField.get(viewPager2);

        Field touchSlopField = RecyclerView.class.getDeclaredField("mTouchSlop");
        touchSlopField.setAccessible(true);

        int touchSlop = (int) touchSlopField.get(recyclerView);
        touchSlopField.set(recyclerView, touchSlop * 2);
    } catch (NoSuchFieldException | IllegalAccessException e) {
        e.printStackTrace();
    }
}

参考链接：https://stackoverflow.com/questions/60660570/viewpager2-reduce-sensitivity-of-horizontal-scrolling

我也在找这个， 大佬解决了 通知一声呢