我開始爲Android學習Rx
,並且出現一個錯誤。這是我的代碼:ObserveOn不工作
在我Subscriber
我打印記錄當前線程的名稱:
Subscriber<Integer> integerSubscriber = new Subscriber<Integer>() {
// ... onCompleted, onError
@Override
public void onNext(Integer s) {
Log.e("RX", "threadName " + getCurrThreadName());
}
};
在這裏,我想在後臺運行的代碼,並在mainThread得到觀察數據:
ArrayList list = new ArrayList();
list.add(...) // creating data list
Observable.from(list)
.map(TransformFunc.getTransformer())
.subscribeOn(AndroidSchedulers.mainThread())
.observeOn(Schedulers.from(executor))
.subscribe(integerSubscriber);
...
其他代碼: static String getCurrThreadName(){ return Thread.currentThread()。getName(); }
static class TransformFunc implements Func1<String, Integer> {
private static TransformFunc instance;
static TransformFunc getTransformer() {
... // return instance
@Override
public Integer call(@NonNull String s) {
...
TimeUnit.SECONDS.sleep(4);
Log.e("RX", "threadName " + getCurrThreadName());
...
return s.length();
}
}
但是當我在設備上運行此代碼,我看到白色屏幕5-10秒,這在日誌:
12-02 16:34:39.374 26086-26086/com.shevart.fitnessnotes E/RX: threadName main
12-02 16:34:39.378 26086-26180/com.shevart.fitnessnotes E/RX: threadName pool-1-thread-2
12-02 16:34:43.375 26086-26086/com.shevart.fitnessnotes E/RX: threadName main
12-02 16:34:43.379 26086-26216/com.shevart.fitnessnotes E/RX: threadName pool-1-thread-3
12-02 16:34:47.376 26086-26086/com.shevart.fitnessnotes E/RX: threadName main
12-02 16:34:47.396 26086-26253/com.shevart.fitnessnotes E/RX: threadName pool-1-thread-4
12-02 16:34:51.376 26086-26086/com.shevart.fitnessnotes E/RX: threadName main
12-02 16:34:51.398 26086-26292/com.shevart.fitnessnotes E/RX: threadName pool-1-thread-5
爲什麼地圖call()
之前調用onNext()
?
您應該在日誌中添加更多信息以知道哪個日誌與哪種方法匹配。 – tynn