我做了一個 JSON 請求并獲取一些資訊。
func parseJSON(poiData: Data) {
let decoder = JSONDecoder()
do {
let decodedData = try decoder.decode(POIData.self, from: poiData)
POIManager.POIname_One = decodedData.results[0].name
POIManager.POIplaceid_One = decodedData.results[4].place_id
POIManager.POIvicinity_One = decodedData.results[4].vicinity
POIManager.POIlong_One = decodedData.results[0].geometry.location.lat
POIManager.POIlat_One = decodedData.results[0].geometry.location.lng
POIManager.POIname_Two = decodedData.results[1].name
POIManager.POIplaceid_Two = decodedData.results[1].place_id
POIManager.POIvicinity_Two = decodedData.results[1].vicinity
POIManager.POIlong_Two = decodedData.results[1].geometry.location.lat
POIManager.POIlat_Two = decodedData.results[1].geometry.location.lng
POIManager.POIname_Three = decodedData.results[2].name
POIManager.POIplaceid_Three = decodedData.results[2].place_id
POIManager.POIvicinity_Three = decodedData.results[2].vicinity
POIManager.POIlong_Three = decodedData.results[2].geometry.location.lat
POIManager.POIlat_Three = decodedData.results[2].geometry.location.lng
} catch {
print(error)
}
}
在另一個 Swift 檔案中，它將請求的結果放在一個串列中，如下所示：
@IBAction func kategorieEins(_ sender: UIButton) {
//Eigene Standort soll hier gezeigt werden/aktualisierter Standort
locationManager.delegate=self
let marker1 = GMSMarker()
marker1.position = CLLocationCoordinate2D(latitude: POIManager.POIlong_One, longitude: POIManager.POIlat_One)
marker1.title = POIManager.POIname_One
marker1.snippet = "Marker1_0"
marker1.map = mapView
let marker2 = GMSMarker()
marker2.position = CLLocationCoordinate2D(latitude: POIManager.POIlong_Two, longitude: POIManager.POIlat_Two)
marker2.title = POIManager.POIname_Two
marker2.snippet = "Marker2_0"
marker2.map = mapView
let marker3 = GMSMarker()
marker3.position = CLLocationCoordinate2D(latitude: POIManager.POIlong_Three, longitude: POIManager.POIlat_Three)
marker3.title = POIManager.POIname_Three
marker3.snippet = "Marker3_0"
marker3.map = mapView
}
如您所見，這整個事情不是動態的，而是靜態的。我寫下我想要創建多少個標記。有沒有辦法自動做到這一點？特別是當我不知道 json 檔案中有多少資訊以及應該創建多少標記時。
uj5u.com熱心網友回復：
我現在解決了。我試過：
decodedData.results.forEach {
print($0.name)
print($0.place_id)
}
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