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flatMap, concatMap problem on Android 26
See original GitHub issueI am using the lastest version RxJava, and I found that below code run on android 26 has problem-lose event.
Observable.create(new ObservableOnSubscribe<Integer>() {
@Override
public void subscribe(ObservableEmitter<Integer> e) throws Exception {
e.onNext(1);
e.onNext(2);
e.onNext(3);
}
}).concatMap(new Function<Integer, ObservableSource<String>>() {
@Override
public ObservableSource<String> apply(Integer integer) throws Exception {
List<String> list = new ArrayList<>();
for (int i = 0; i < 3; i++) {
list.add("I am value " + integer);
}
int delayTime = (int) (1 + Math.random() * 10);
return Observable.fromIterable(list).delay(delayTime, TimeUnit.MILLISECONDS);
}
}).subscribeOn(Schedulers.newThread())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new Consumer<String>() {
@Override
public void accept(String s) throws Exception {
Log.i(TAG, "concatMap: accept:" + s);
}
});
The run result on android-26(Android 8 emulator)(every observable lose a event):
07-30 15:13:54.354 11726-11726/? I/MainActivity: concatMap: accept:I am value 1
07-30 15:13:54.354 11726-11726/? I/MainActivity: concatMap: accept:I am value 1
07-30 15:13:54.354 11726-11726/? I/MainActivity: concatMap: accept:I am value 2
07-30 15:13:54.354 11726-11726/? I/MainActivity: concatMap: accept:I am value 2
07-30 15:13:54.354 11726-11726/? I/MainActivity: concatMap: accept:I am value 3
07-30 15:13:54.354 11726-11726/? I/MainActivity: concatMap: accept:I am value 3
The run result on android-25(Android 7.1 emulator):
07-30 15:15:26.981 4756-4756/? I/MainActivity: concatMap: accept:I am value 1
07-30 15:15:26.981 4756-4756/? I/MainActivity: concatMap: accept:I am value 1
07-30 15:15:26.981 4756-4756/? I/MainActivity: concatMap: accept:I am value 1
07-30 15:15:26.981 4756-4756/? I/MainActivity: concatMap: accept:I am value 2
07-30 15:15:26.981 4756-4756/? I/MainActivity: concatMap: accept:I am value 2
07-30 15:15:26.981 4756-4756/? I/MainActivity: concatMap: accept:I am value 2
07-30 15:15:26.981 4756-4756/? I/MainActivity: concatMap: accept:I am value 3
07-30 15:15:26.981 4756-4756/? I/MainActivity: concatMap: accept:I am value 3
07-30 15:15:26.981 4756-4756/? I/MainActivity: concatMap: accept:I am value 3
Issue Analytics
- State:
- Created 6 years ago
- Comments:6 (3 by maintainers)
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Looks like there is a feature that hides/ignores duplicate log lines. I get this for the missing entries:
If I change the printed item:
I get all items.
Stackoverflow.
Ok, I got. Thank you very much. 😊