在深入代码之前,我已经查看了以下问题:
- 如何在NestedScrollView中使用RecyclerView?
- NestedScrollView中的RecyclerView滚动但不像普通的RecyclerView或NestedScrollView那样快速滚动
- ScrollView / NestedScrollView中的RecyclerView无法正确滚动
以上问题都没有解决我的问题。当滚动时,RecyclerView
太卡了。
我有一个NestedScrollview
和一个LinearLayout
作为NestedScrollview
的主要布局。布局的代码如下:
<android.support.v4.widget.NestedScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
xmlns:fbutton="http://schemas.android.com/apk/res-auto"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:gravity="center"
>
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/frag_misc_rv_margin_top"
android:scrollbars="none"
android:nestedScrollingEnabled="false"
android:id="@+id/frag_showcase_promotion_recyclerview"/>
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
代码如下:
mPromotionsRv.setLayoutManager(new LinearLayoutManager(getActivity(),LinearLayoutManager.HORIZONTAL,false));
mPromotionsRv.setNestedScrollingEnabled(false);
mPromotionsAdapter = new ShowcasePromotionRvAdapter(getActivity(), mPromotionsItems);
mPromotionsAdapter.setOnItemClickListener(new ShowcasePromotionListener() {
@Override
public void onClick(View view, int position) {
ItemPromotion mPromotion = mPromotionsItems.get(position);
try{
recordPromotionClick(mPromotion.getId());
view.getContext().startActivity(new Intent(Intent.ACTION_VIEW).setData(Uri.parse(mPromotion.getPromotion_link())));
} catch (Exception e){
e.printStackTrace();
}
}
});
mPromotionsRv.setAdapter(mPromotionsAdapter);
SnapHelper snapHelperStart = new GravitySnapHelper(Gravity.START);
snapHelperStart.attachToRecyclerView(mPromotionsRv);
RecyclerView.ItemAnimator animator = mPromotionsRv.getItemAnimator();
if (animator instanceof SimpleItemAnimator) { ((SimpleItemAnimator) animator).setSupportsChangeAnimations(false); }