Question

由于我对RxJava / RxAndroid的经验不足，因此我尝试实现某些功能，但不确定如何执行。.我面临的问题是，此操作阻塞了我的UI线程..

首先，我正在初始化DataOutputStream和一个将读取内容并将其写入的类：

   public static void startReceiveLogs() {
        mReadFlag = true;
        try {
            os = new DataOutputStream(new FileOutputStream("/sdcard/myApp/" + TimeUtils.getCurrentTime(TimeZone.getDefault()) + "_logs.uedl"));
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
        rxLogsReaderClass = new RxLogsReaderClass();
        rxLogsReaderClass.startListening();
}

这是课程：

static class RxLogsReaderClass {
    byte[] rbuf = new byte[64];


    public void startListening() {
        ExecutorService executor = Executors.newFixedThreadPool(2);

        Observable<Integer> myObs = Observable.create(new ObservableOnSubscribe<Integer>() {
            @Override
            public void subscribe(ObservableEmitter<Integer> emitter) throws Exception {
                emitter.onNext(mSerial.read(rbuf, mSerialPortLog));
                emitter.onComplete();
            }
        });

        Observer<Integer> observer = new Observer<Integer>() {
            @Override
            public void onSubscribe(Disposable d) {

            }

            @Override
            public void onNext(Integer integer) {
                while (mReadFlag) {
                     try {
                     int len = mSerial.readLog(rbuf, mSerialPortLog);
                     if (len > 0) {
                        os.write(rbuf, 0, len);
                    }
            } catch (NullPointerException e1) {
                e1.printStackTrace();
            } catch (Exception e) {
                e.printStackTrace();
            }
                }
            }

            @Override
            public void onError(Throwable e) {
            }

            @Override
            public void onComplete() {
            }
        };
        myObs.subscribeOn(Schedulers.io());
        myObs.observeOn(Schedulers.from(executor));
        myObs.subscribe(observer);

    }

}

这是一个读取方法，应该调用onNext（）...它只是从USBDeviceConnection中读取内容并返回int：

public int readLog(byte[] buf, int channel) {
    if (DeviceisXR2280X == 1) {
        channel = 0;
    }
    int returnValue;
    try {
        returnValue = this.mDeviceConnection.bulkTransfer(this.mEXAREndpointIN[channel], buf, buf.length, 10000);
    } catch (ArrayIndexOutOfBoundsException aioue) {
        returnValue = this.mDeviceConnection.bulkTransfer(this.mEXAREndpointIN[this.mEXAREndpointIN.length - 1], buf, buf.length, 10000);
    }

    return returnValue;
}

我尝试在AndroidSchedulers.mainThread（）和此线程上进行观察，但是在每种情况下，它都会阻塞主线程...您能告诉我我在做什么错吗。.

如何在RxJava / RxAndroid中使用DataOutputStream

0 个答案: