使用RxJava2 + RxBinding在Fragment替换

时间:2017-06-08 10:24:05

标签: android android-fragments android-recyclerview rx-java2 rx-binding

我在片段中有一个RecyclerView,项目点击是使用RxJava2处理的,如this SO answer中所述,它在非片段中工作正常。

private PublishSubject<Place> itemViewClickSubject = PublishSubject.create();

@Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.search_result_view, parent, false);

        ViewHolder viewHolder = new ViewHolder(view);

        // convert click events into reactive stream
        RxView.clicks(view)
                .takeUntil(RxView.detaches(parent))
                // viewHolder.getPlace() is null until it get bound
                .map(__ -> viewHolder.getPlace())
                .subscribe(itemViewClickSubject);

        return viewHolder;
    }

片段中的RecyclerView只能运行一次。项目点击片段被另一个片段替换。在按下后,出现RecyclerView片段,但点击不再起作用。

如果我删除.takeUntil(RxView.detaches(parent))行,它会有效。我认为当它没有显示时,需要打破RxView click与RecyclerView的强绑定(Detached)。我该如何解决这个问题?我希望使用附加/分离事件之一解决问题,任何建议都会很棒!感谢。

1 个答案:

答案 0 :(得分:4)

为了回答您的问题和评论,我发送了整个RecylerView + RxJava的解决方案:

private PublishSubject<Place> itemViewClickSubject = PublishSubject.create();

@Override
public void onBindViewHolder(ViewHolder viewHolder, int position) {
    RxView.clicks(viewHolder.itemView) //viewHolder.itemView here You have access to view
            .map(aVoid -> viewHolder.getPlace())
            .subscribe(itemViewClickSubject);
}

@Override
public void onDetachedFromRecyclerView(RecyclerView recyclerView) {
    itemViewClickSubject.onComplete(); //here we avoid memory leaks
}