这里,我快速滚动时遇到“持有人”问题,持有人位置被更新(由于回收行为),并且在一段时间后被调用onSuccess(因为获取数据需要一些时间)在此之前,持有人位置已经更改,并且holder.mUserFullName.setText(user.getName())应用于错误的持有人位置。仅当我快速滚动时才会发生这种情况,如果我禁用了回收功能,则可以解决问题,但我想要回收功能。
@Override
protected void onBindViewHolder(@NonNull PostVH holder, int position, @NonNull Post post) {
MyFirestoreDbRefs.getAllUsersCollection().document(post.getByUid())
.get().addOnSuccessListener(new OnSuccessListener<DocumentSnapshot>() {
@Override
public void onSuccess(DocumentSnapshot documentSnapshot) {
User user=documentSnapshot.toObject(User.class);
/*here i face a problem with 'holder' as i fast scroll,holder position gets updated
* (because of recycling behaviour) and after a while onSuccess gets called(as it takes some time for fetching data)
* until then the holder position already changed and holder.mUserFullName.setText(user.getName()) applied to wrong
* holder position */
holder.mUserFullName.setText(user.getName());
}
});
}
Post Collection Structure in DBUsers Collection Structure in DB
以下解决方案在某些情况下可能会起作用: