无法为部分匹配 class:'Lrx/Observable;'(未知错误)

Unable to match class for part: 'Lrx/Observable;' (unknown error)

大家好,我正在尝试执行以下方法,但收到一条错误消息:

Unable to match class for part: 'Lrx/Observable;

我的方法:

public void SendNote(){


    titleStr = etxtTitle.getText().toString();


// saving objects
    NotesRealmClass notesRealmClass = new NotesRealmClass();
    notesRealmClass.setTitle("try");

// save object asynchronously
Backendless.Persistence.save(notesRealmClass, new AsyncCallback<NotesRealmClass>() {
    public void handleResponse(NotesRealmClass note) {
        // new Contact instance has been saved
        Toast.makeText(getActivity(), "Successfully posted ", Toast.LENGTH_SHORT).show();

    }

public void handleFault(BackendlessFault fault) {

    Toast.makeText(getActivity(), "" + fault.getMessage(), Toast.LENGTH_SHORT).show();
    // an error has occurred, the error code can be retrieved with fault.getCode()
}
}); }

我正在尝试将对象保存到 Backendless 服务器中,但出现此错误,任何人都可以向我解释此错误的含义??我四处寻找,但还没有得到任何东西

好吧,根据这个https://www.bountysource.com/issues/29233605-java-lang-noclassdeffounderror-rx-observable-in-0-87-0,事实证明这是领域的错误,为了修复它,我们只需要将编译'io.reactivex:rxjava:1.0.16'放入我们的成绩文件