schedulers.io（）未返回主线程

Question

我的代码有什么问题吗？

ParseObservable.find(myQuery)
    .map(myMapFunc())
    .subscribeOn(AndroidSchedulers.handlerThread(new Handler()))
    .subscribe(
        new Subscriber<MyObj>() {
           @Override
            public void onError(Throwable e) {
                Log.e("error","error",e);
            }

            @Override
            public void onNext(T t) {
                // ... worker thread (but here is ok)
            }

            public void onCompleted() {
                // ... worker thread again instead of mainThread
            }
        }
    )
);

Answer 1

不幸的是，所有方法的订阅都在同一个线程中(onnext、onerror和oncompleted

但是您可以在schedulers.io()和onnext(tt)方法中观察，创建一个新的observable，以便在mainthread中监听，如下所示：

ParseObservable.find(myQuery)
    .map(myMapFunc())
    .subscribeOn(Schedulers.io())
    .subscribe(
        new Subscriber<MyObj>() {
           @Override
            public void onError(Throwable e) {
                Log.e("error","error",e);
            }

            @Override
            public void onNext(T t) {
                Observable.just(t)
                    .observeOn(AndroidSchedulers.mainThread())
                    .subscribe((t) -> {
                         // do something in MainThread
                    })
            }

            public void onCompleted() {
                // ... worker thread again instead of mainThread
            }
        }
    )
);

希望能有所帮助！