我在移动应用程序中显示timeslider时遇到问题。
我已经安装了arcgis-runtime-toolkit，一切似乎都正常，但是时间滑块没有显示。
MapViewController类：UIViewController {
private var map = AGSMap(basemap: AGSBasemap.topographic())
private var timeSlider = TimeSlider()
struct EphemeralCacheKeys {
static let newSpatialFeature = "MapViewController.newFeature.spatial"
static let newNonSpatialFeature = "MapViewController.newFeature.nonspatial"
static let newRelatedRecord = "MapViewController.newRelatedRecord"
}
enum MapViewMode: Equatable {
case defaultView
case disabled
case selectedFeature(featureLoaded: Bool)
case selectingFeature
case offlineMask
}
weak var delegate: MapViewControllerDelegate?
let changeHandler = AppContextChangeHandler()
@IBOutlet weak var mapView: AGSMapView!
@IBOutlet weak var smallPopupView: ShrinkingView!
@IBOutlet weak var popupsContainerView: UIView!
@IBOutlet weak var addPopupRelatedRecordButton: UIButton!
@IBOutlet weak var selectView: UIView!
@IBOutlet weak var pinDropView: PinDropView!
weak var activityBarView: ActivityBarView!
@IBOutlet weak var slideNotificationView: SlideNotificationView!
@IBOutlet weak var compassView: CompassView!
@IBOutlet weak var reloadMapButton: UIButton!
@IBOutlet weak var relatedRecordHeaderLabel: UILabel!
@IBOutlet weak var relatedRecordSubheaderLabel: UILabel!
@IBOutlet weak var relatedRecordsNLabel: UILabel!
@IBOutlet var selectViewTopConstraint: NSLayoutConstraint!
@IBOutlet weak var selectViewHeaderLabel: UILabel!
@IBOutlet weak var selectViewSubheaderLabel: UILabel!
var maskViewController: MaskViewController!
@IBOutlet weak var maskViewContainer: UIView!
var featureDetailViewBottomConstraint: NSLayoutConstraint!
var visibleAreaObserver: NSKeyValueObservation?
var identifyOperation: AGSCancelable?
var mapViewMode: MapViewMode = .defaultView {
didSet {
adjustForMapViewMode(from: oldValue, to: mapViewMode)
}
}
override func viewDidLoad() {
super.viewDidLoad()
mapView.map = map
// Configure time slider
timeSlider.isHidden = true
timeSlider.labelMode = .ticks
timeSlider.addTarget(self, action: #selector(MapViewController.timeSliderValueChanged(timeSlider:)), for: .valueChanged)
view.addSubview(timeSlider)
//
// Add constraints to position the slider
let margin: CGFloat = 10.0
timeSlider.translatesAutoresizingMaskIntoConstraints = false
timeSlider.bottomAnchor.constraint(equalTo: mapView.attributionTopAnchor, constant: -margin).isActive = true
timeSlider.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor, constant: margin).isActive = true
timeSlider.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor, constant: -margin).isActive = true
self.timeSlider.initializeTimeProperties(geoView: self.mapView, observeGeoView: true, completion: { [weak self] (error) in
// Make sure self is around
guard let self = self else {
return
}
// If time slider fails to init then
// return with an error.
guard error == nil else {
self.showError(error!)
return
}
// Show the time slider
self.timeSlider.isHidden = false
})
// Assign the map view touch delegate and other configurations.
setupMapView()
// Builds and constrains the activity view to the map view.
setupActivityBarView()
// Ensure the map view attribution bar top auto layout constraint is attached to the small pop-up view.
setupMapViewAttributionBarAutoLayoutConstraints()
// Set up the small pop-up view.
setupSmallPopupView()
// Set initial map view mode.
adjustForMapViewMode(from: nil, to: mapViewMode)
// Associate the compass view to the map view.
compassView.mapView = mapView
// Begin listening to changes to the app context.
subscribeToAppContextChanges()
// Load map from the app context.
appContext.loadOfflineMobileMapPackageAndSetMapForCurrentWorkMode()
// Adjust location display for app location authorization status. If location authorized is undetermined, this will prompt the user for authorization.
adjustForLocationAuthorizationStatus()
// If device is not reachable upon launch, inform the end-user.
displayInitialReachabilityMessage()
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
refreshCurrentPopup()
}
@IBAction func userRequestsReloadMap(_ sender: Any) {
loadMapViewMap()
}
@IBAction func userRequestsAddNewRelatedRecord(_ sender: Any) {
assert(currentPopupManager != nil, "This function should not be reached if a popup is not currently selected.")
guard let manager = currentPopupManager, let relationships = manager.richPopup.relationships, let relationship = relationships.oneToMany.first else {
present(simpleAlertMessage: "Unable to add a new related record.")
return
}
let relatedManager: RichPopupManager
do {
relatedManager = try manager.buildRichPopupManagerForNewOneToManyRecord(for: relationship)
}
catch {
present(simpleAlertMessage: "Unable to add a new related record. \(error.localizedDescription)")
return
}
SVProgressHUD.show(withStatus: String(format: "Creating new %@.", (relatedManager.title ?? "related record")))
relationships.load { [weak self] (error) in
SVProgressHUD.dismiss()
guard let self = self else { return }
guard error == nil else {
self.present(simpleAlertMessage: error!.localizedDescription)
return
}
EphemeralCache.set(object: relatedManager, forKey: EphemeralCacheKeys.newRelatedRecord)
self.performSegue(withIdentifier: "modallyPresentRelatedRecordsPopupViewController", sender: nil)
}
}
// MARK: Current Pop-Up
private(set) var currentPopupManager: RichPopupManager?
func setCurrentPopup(popup: RichPopup) {
// Clear existing selection
currentPopupManager?.popup.feature?.featureTable?.featureLayer?.clearSelection()
// Build new rich popup manager.
currentPopupManager = RichPopupManager(richPopup: popup)
}
func clearCurrentPopup() {
// Clear existing selection.
currentPopupManager?.popup.feature?.featureTable?.featureLayer?.clearSelection()
// Nullify current popup manager.
currentPopupManager = nil
}
override func shouldPerformSegue(withIdentifier identifier: String, sender: Any?) -> Bool {
if identifier == "modallyPresentRelatedRecordsPopupViewController" {
return currentPopupManager != nil
}
return true
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if let destination = segue.navigationDestination as? RichPopupViewController {
if let newPopup = EphemeralCache.get(objectForKey: EphemeralCacheKeys.newSpatialFeature) as? RichPopup {
setCurrentPopup(popup: newPopup)
destination.popupManager = currentPopupManager!
destination.setEditing(true, animated: false)
mapViewMode = .selectedFeature(featureLoaded: false)
}
else if let popupManager = EphemeralCache.get(objectForKey: EphemeralCacheKeys.newRelatedRecord) as? RichPopupManager {
destination.popupManager = popupManager
destination.setEditing(true, animated: false)
destination.shouldLoadRichPopupRelatedRecords = false
}
else if let currentPopupManager = currentPopupManager {
destination.popupManager = currentPopupManager
}
else {
assertionFailure("A rich popup view controller should not present if any of the above scenarios are not met.")
}
}
else if let destination = segue.destination as? MaskViewController {
maskViewController = destination
}
}
private func displayInitialReachabilityMessage() {
if !appReachability.isReachable {
displayReachabilityMessage(isReachable: false)
}
}
private func displayReachabilityMessage(isReachable reachable: Bool) {
let connectionMessage = String(format: "Device %@ connection to the network.", (reachable ? "gained" : "lost"))
slideNotificationView.showLabel(withNotificationMessage: connectionMessage, forDuration: 6.0)
}
func subscribeToAppContextChanges() {
let currentMapChange: AppContextChange = .currentMap { [weak self] currentMap in
guard let self = self else { return }
self.clearCurrentPopup()
self.mapViewMode = .defaultView
self.mapView.map = currentMap
self.loadMapViewMap()
}
let locationAuthorizationChange: AppContextChange = .locationAuthorization { [weak self] authorized in
self?.adjustForLocationAuthorizationStatus()
}
let workModeChange: AppContextChange = .workMode { [weak self] workMode in
guard let self = self else { return }
let color: UIColor = (workMode == .online) ? .primary : .offline
self.activityBarView.colors = (color.lighter, color.darker)
self.slideNotificationView.messageBackgroundColor = (workMode == .online) ? UIColor.primary.lighter : UIColor.offline.darker
self.slideNotificationView.messageTextColor = .contrasting
}
let reachabilityChange: AppContextChange = .reachability { [weak self] reachable in
self?.displayReachabilityMessage(isReachable: reachable)
}
changeHandler.subscribe(toChanges: [currentMapChange, locationAuthorizationChange, workModeChange, reachabilityChange])
} 公共函数initializeTimeSteps（timeStepCount：Int，fullExtent：AGSTimeExtent，完成：@escaping（Error？）-> Void）{ }
@objc func timeSliderValueChanged(timeSlider: TimeSlider) {
if mapView.timeExtent != timeSlider.currentExtent {
mapView.timeExtent = timeSlider.currentExtent
}
} 私人功能showError（_错误：错误）{ 让alertController = UIAlertController（标题：“错误”，消息：error.localizedDescription，preferredStyle：.alert） alertController.addAction（UIAlertAction（title：“ OK”，样式：.default，处理程序：nil）） 礼物（alertController，动画：true） } }