将所有UI事件合并到一个Observable，但我只收到最后一个合并事件

我试图合并一个Observable中的所有UI事件，所以我可以对所有事件做出反应，例如：onCreate生命周期，滚动来自我的事件RecyclerView，从搜索视图中搜索事件和从动作模式激活中删除事件。我正在使用Rxbinding来实现这一点。我试图从杰克沃顿的介绍中实现Redux模式：http://jakewharton.com/the-state-of-managing-state-with-rxjava/将所有UI事件合并到一个Observable，但我只收到最后一个合并事件

实际结果：只有GetUsersEvent被触发，而其他事件不会。

预期结果：适当时触发所有事件。

在此先感谢。我的代码：

public Observable events; 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    events = Observable.just(new GetUsersEvent()); 
    //... boiler plate 
    events.mergeWith(RxRecyclerView.scrollEvents(userRecycler).map(recyclerViewScrollEvent -> { 
     int totalItemCount = layoutManager.getItemCount(); 
     int firstVisibleItemPosition = layoutManager.findFirstVisibleItemPosition(); 
     if ((layoutManager.getChildCount() + firstVisibleItemPosition) >= totalItemCount 
       && firstVisibleItemPosition >= 0 && totalItemCount >= PAGE_SIZE) { 
      uiModel = new UserListState.Builder(uiModel) 
        .setUsers(uiModel.getUsers()) 
        .setYScroll(firstVisibleItemPosition) 
        .build(); 
      return new UsersNextPageEvent(uiModel.getLastId()); 
     } 
     return null; 
    })); 
} 

@Override 
public boolean onCreateActionMode(ActionMode mode, Menu menu) { 
    mode.getMenuInflater().inflate(R.menu.selected_list_menu, menu); 
    events.mergeWith(RxMenuItem.clicks(menu.findItem(R.id.delete_item)) 
      .map(click -> new DeleteUsersEvent(usersAdapter.getSelectedItemsIds()))); 
    return true; 
} 

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    getMenuInflater().inflate(R.menu.list_menu, menu); 
    SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE); 
    SearchView mSearchView = (SearchView) menu.findItem(R.id.menu_search).getActionView(); 
    mSearchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName())); 
    events.mergeWith(RxSearchView.queryTextChanges(mSearchView) 
      .map(query -> new SearchUsersEvent(query.toString())) 
      .doOnNext(searchUsersEvent -> Log.d("searchEvent", "eventFired"))); 
    return super.onCreateOptionsMenu(menu); 
} 

@Override 
public void onResume() { 
    super.onResume(); 
    events.compose(userListVM.uiModels(mapEventsToActions, mapActionsToExecutables, stateReducer, 
      DeleteUsersEvent.class, GetUsersEvent.class, SearchUsersEvent.class, UsersNextPageEvent.class)) 
      .compose(bindToLifecycle()).subscribe(new BaseSubscriber<>(this, ERROR_WITH_RETRY)); 
}

来源

2017-04-21 Zeyad Gasser