java - viewpager2 降低水平滚动的灵敏度

Question

如何降低 viewpager2 中水平滚动的灵敏度？

这是目前我的 viewpager 代码。

viewPager = findViewById(id.view_pager);
viewPager.setAdapter(new ViewPagerAdapter(this, dataManager, USERNAME));
tabLayout.setSelectedTabIndicatorColor(ContextCompat.getColor(this, R.color.green));
new TabLayoutMediator(tabLayout, viewPager,
        new TabLayoutMediator.TabConfigurationStrategy() {
            @Override
            public void onConfigureTab(@NonNull TabLayout.Tab tab, int position) {
                tab.setText(tabNames.get(position));
            }
        }).attach();

Answer 1

我正在寻找同样的东西，发现这个 solution in Kotlin :

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*8)       // "8" was obtained experimentally

如果你需要 Java，它应该是这样的:

try {
    Field recyclerViewField = ViewPager2.class.getDeclaredField("mRecyclerView");
    recyclerViewField.setAccessible(true);

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

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

    int touchSlop = (int) touchSlopField.get(recyclerView);
    touchSlopField.set(recyclerView, touchSlop * 8);
} catch (NoSuchFieldException | IllegalAccessException e) {
    e.printStackTrace();
}

这不是一个“好”的解决方案，因为它使用反射 API，但它应该有所帮助。