相关疑难解决方法(0)

我在其中一项活动中遇到了一个奇怪的问题.当从拍摄照片/视频回来时,onActivityResult我正在显示一个对话框,让用户为摄像机命名.一旦用户按下OK,我就会发送onNext()一个主题,该主题具有复制文件的请求文件名(并显示进度对话框).

由于某种原因map(),即使我打电话,也总是在主线程上调用执行复制的函数subscribeOn(Schedulers.io()).

@Override
protected void onActivityResult(final int requestCode, int resultCode, Intent intent) {
    ...

    final PublishSubject<String> subject = PublishSubject.create();`

    mSubscription = subject
            .subscribeOn(Schedulers.io())
            .map(new Func1<String, String>() {
                @Override
                public String call(String fileName) {
                    Log.I.d(TAG,"map");
                    return doSomeIOHeavyFuncition();
                }
            })
            .observeOn(AndroidSchedulers.mainThread())
            .subscribe(new Action1<String>() {
                @Override
                public void call(final String fullPath) {
                    Log.d(TAG,"onNext");
                    doSomethingOnUI(fullPath);

                    subject.onCompleted();
                }
            }, new Action1<Throwable>() {
                @Override
                public void call(Throwable throwable) {
                    ...
                }
            }, new Action0() {
                @Override
                public void …