此代码来自位置tableView视图控制器,其中位置从四方API序列化,我抓取数据,将其传递回我创建事件的视图控制器。数据被正确序列化,填充tableView和所有数据,所以我现在不打算发布它,只是传递数据的segue方法。
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
let indexPath = self.tableView.indexPathForSelectedRow
let item = self.responseItems![indexPath!.row]
var eventVC = CreateEventViewController()
if segue.identifier == "pushBackToEventVC" {
if let venue = item["venue"] as? NSDictionary {
let locationString = venue["name"] as! String
let location = venue["location"]
//get lat/long strings
print(location)
eventVC.updateWithLocation(locationString)
eventVC.updateWithGeoPoint(PFGeoPoint(latitude: locationLatitude, longitude: locationLongitude))
}
eventVC = segue.destinationViewController as! CreateEventViewController
//pass location coordinates
}
//the rest of the segue method
}
克里特事件视图控制器中的更新方法,当我在这些方法上设置断点时,我可以看到数据已正确传递,并且位置(PFGeoPoint)工作正常,但locationString(一个字符串)抛出“错误的指令错误“虽然它确实将其正确打印到控制台
func updateWithLocation(locationString: String) {
print(locationString)
self.locationLabel.text = locationString
}
func updateWithGeoPoint(venueLocation: PFGeoPoint) {
// print(venueLocation)
self.event?.location = venueLocation
self.eventLocation = venueLocation
print(self.eventLocation)
}
有什么想法吗?它基本上工作,但不会用字符串更新标签,虽然我可以看到它已正确传递。一如既往地感谢您的帮助。
答案 0 :(得分:2)
尝试使用此代码块,
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if (segue.identifier == "pushBackToEventVC") {
let detailViewController = ((segue.destinationViewController) as! CreateEventViewController)
let indexPath = self.tableView!.indexPathForSelectedRow!
detailViewController.locationString = venue["location"]
}
}