现在我在聊天片段中使用谷歌分页库
这是我的数据源中的初始代码:
Disposable disposable = apiWrapper.getMessages(1, userId)
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(messagesPagingResponse -> {
if (messagesPagingResponse.getData() != null && messagesPagingResponse.getData().getData() != null) {
callback.onResult(messagesPagingResponse.getData().getData(), null, messagesPagingResponse.getData().getNextPage());
}
}
, throwable -> {
Log.e("throwable", throwable.getLocalizedMessage());
});
compositeDisposable.add(disposable);
在聊天片段中,我观察了列表
viewModel.getLiveMessages().observe(this, this::setChatList);
private void setChatList(PagedList<Message> messages) {
this.messages = messages;
ChatPagingAdapter chatPagingAdapter = (ChatPagingAdapter) binding.messagesRecyclerView.getAdapter();
if (chatPagingAdapter != null){
chatPagingAdapter.submitList(this.messages);
}
}
它工作良好,直到iam尝试向分页列表中添加新消息,从而向我显示此错误
E/error: The exception could not be delivered to the consumer because it has already canceled/disposed the flow or the exception has nowhere to go to begin with. Further reading: https://github.com/ReactiveX/RxJava/wiki/What's-different-in-2.0#error-handling | java.lang.UnsupportedOperationException
当我收到新消息时,我尝试将其添加为
messages.add(0, message);
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我来说两句