小编Lau*_*s V的帖子

我有一个Android Webview,当我点击链接下载文件(pdf等图像)时,我收到了一条错误消息.

Error message:
Cannot call determinedVisibility() - never saw a connection for the pid

知道我做错了吗？谁可以帮忙!？

我正在使用地理编码器.在所有设备上,代码工作正常,但在Nexus 5手机上,日志中有例外.

我的代码:

override fun fromAddress(address: Address): Observable<Geolocation> {
    val location = geocoder.getFromLocationName("${address.street} ${address.number}, ${address.postcode}, ${address.city}", LOCATIONS_MAX_RESULTS).first()
    return Observable.just(Geolocation(latitude = location.latitude, longitude = location.longitude))
}

我的错误:

java.io.IOException: grpc failed
  at android.location.Geocoder.getFromLocationName(Geocoder.java:178)
  at nl.ah.appienow.data.address.AndroidGeocoder.fromAddress(AndroidGeocoder.kt:20)
  at nl.ah.appienow.address.ValidatePostcode$execute$1.apply(ValidatePostcode.kt:31)
  at nl.ah.appienow.address.ValidatePostcode$execute$1.apply(ValidatePostcode.kt:17)
  at io.reactivex.internal.operators.observable.ObservableFlatMap$MergeObserver.onNext(ObservableFlatMap.java:121)
  at io.reactivex.internal.operators.observable.ObservableMap$MapObserver.onNext(ObservableMap.java:64)
  at retrofit2.adapter.rxjava2.BodyObservable$BodyObserver.onNext(BodyObservable.java:51)
  at retrofit2.adapter.rxjava2.BodyObservable$BodyObserver.onNext(BodyObservable.java:37)
  at retrofit2.adapter.rxjava2.CallExecuteObservable.subscribeActual(CallExecuteObservable.java:43)
  at io.reactivex.Observable.subscribe(Observable.java:10842)
  at retrofit2.adapter.rxjava2.BodyObservable.subscribeActual(BodyObservable.java:34)
  at io.reactivex.Observable.subscribe(Observable.java:10842)
  at io.reactivex.internal.operators.observable.ObservableMap.subscribeActual(ObservableMap.java:33)
  at io.reactivex.Observable.subscribe(Observable.java:10842)
  at io.reactivex.internal.operators.observable.ObservableFlatMap.subscribeActual(ObservableFlatMap.java:55)
  at io.reactivex.Observable.subscribe(Observable.java:10842)
  at io.reactivex.internal.operators.observable.ObservableSubscribeOn$SubscribeTask.run(ObservableSubscribeOn.java:96)
  at io.reactivex.Scheduler$DisposeTask.run(Scheduler.java:452)
  at io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:61)
  at io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:52)
  at java.util.concurrent.FutureTask.run(FutureTask.java:237)
  at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:269)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
  at …

我想在我的iOS应用程序中启动计时器,当应用程序在后台运行时以及应用程序关闭时.计时器必须每30分钟检查一次新的通知.在计时器功能中,他们每隔30分钟调用另一个函数showNotification().

我怎么做这个计时器,当应用程序没有在后台运行/运行时,我必须在哪个地方调用计时器.

我有一个问题.我想在webview上方填充或边距.这是问题的图片:

谁能帮我解决这个问题？