有两个可观察的
Observable<Void> cancelButtonClick
= RxView.clicks(btnCancel);
Observable<Void> actionButtonClick
= RxView.clicks(btnSomeAction)
问题
尝试从actionButtonClick
流发出值,如果cancelButtonClick
流不会为 10秒发出
尝试:
final DateTime[] lastCancelDate = new DateTime[1];
cancelButtonClick
.map(new Func1<Void, DateTime>() {
@Override
public DateTime call(Void aVoid) {
return DateTime.now();
}
})
.subscribe(new Action1<DateTime>() {
@Override
public void call(DateTime dateTime) {
lastCancelDate[0] = dateTime;
}
});
actionButtonClick
.delay(10, TimeUnit.SECONDS)
.filter(new Func1<Void, Boolean>() {
@Override
public Boolean call(Void aVoid) {
return
lastCancelDate[0] == null
|| (new Duration(lastCancelDate[0], DateTime.now()).getStandardSeconds())
> 10;
}
})
.doOnNext(new Action1<Void>() {
@Override
public void call(Void aVoid) {
lastCancelDate[0] = null;
}
})
.subscribe(new Action1<Void>() {
@Override
public void call(Void aVoid) {
Log.d("ACTIONII", "Got Action");
}
});
它有效,但应该有更好的方法。
答案 0 :(得分:0)
所以如果actionButtonClick
在未来10秒内没有发出项目,你想阻止发出cancelButtonClick
吗?
首先,您可以使用BehaviorSubject:
来改善您的解决方案BehaviorSubject<DateTime> lastCancelSubject = BehaviorSubject.create();
cancelButtonClick
.map(new Func1<Void, DateTime>() {
@Override
public DateTime call(Void aVoid) {
return DateTime.now();
}
})
.subscribe(lastCancelSubject);
actionButtonClick
.delay(10, TimeUnit.SECONDS)
.filter(new Func1<Void, Boolean>() {
@Override
public Boolean call(Void aVoid) {
return
lastCancelDate[0] == null
|| (new Duration(lastCancelSubject.getValue(), DateTime.now()).getStandardSeconds())
> 10;
}
})
.subscribe(new Action1<Void>() {
@Override
public void call(Void aVoid) {
Log.d("ACTIONII", "Got Action");
}
});
虽然rx-java提供了几种方法来实现这一点,但我会声明另一个Observable
:
final Observable<Boolean> iscancelledObservable = cancelButtonClick
.buffer(10, TimeUnit.SECONDS)
.first()
.map(new Func1<List<Void>, Boolean>() {
@Override
public Boolean call(List<Void> voids) {
return voids.size() > 0;
}
});
actionButtonClick
.flatMap(new Func1<Void, Observable<Boolean>>() {
@Override
public Observable<Boolean> call(Void aVoid) {
return iscancelledObservable;
}
})
.filter(new Func1<Boolean, Boolean>() {
@Override
public Boolean call(Boolean aBoolean) {
return !aBoolean;
}
})
.subscribe(new Action1<Void>() {
@Override
public void call(Void aVoid) {
Log.d("ACTIONII", "Got Action");
}
});
此解决方案功能更强,不依赖于存储状态。