[英]Saving Json data in Realm in swift
我想在swift中保存Realm中的json數據。 但我得到的錯誤如下:
由於未捕獲的異常'RLMException'而終止應用,
原因:'領域從錯誤的線程訪問'“
在這種情況下使用什么 - “GCD”或“操作”
我在這里添加我的代碼
func getDataFromServer(){
let personData = Person()
let headers = [
"user_id": "1",
"access_token": "5ae39568b47d3edf12345dc7ccddf519",
]
let request = NSMutableURLRequest(url: NSURL(string: "http://prvy.in/sme/assgnment_ios/api/user/data")! as URL)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers
let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
if (error != nil) {
} else {
if let data = data {
do{
guard let json = try JSONSerialization.jsonObject(with: data, options: .allowFragments) as? NSDictionary else{
return
}
if let resultArray = json["data"] as? NSArray{
for allData in resultArray {
if let resultData = allData as? NSDictionary{
let regdId = resultData[REGD_ID] as? String
if let firstName = resultData[FIRST_NAME] as? String{
print(firstName)
personData.firstName = firstName
}
self.saveReamData(personData)
}
}
}catch{
print("error loading data")
}
}
}
})
dataTask.resume()
}
我的保存功能是:
func saveReamData(_ person: Person) {
let backgroundQueue = DispatchQueue(label: ".realm", qos: .background)
backgroundQueue.async {
do {
try self.realm?.write {
self.realm?.add(person)
}
} catch {
print("error saving to realm")
}
}
}
如果您在主隊列中創建了Realm實例,則只能在主隊列中使用它。 在您的代碼中,您嘗試在后台隊列中將數據寫入Realm,但您已在主隊列中創建了Realm實例。
如果要在后台隊列中將數據寫入Realm,請使用Realm文檔中的以下代碼:
DispatchQueue(label: "background").async {
autoreleasepool {
let realm = try! Realm()
guard let person = realm.resolve(personRef) else {
return // person was deleted
}
try! realm.write {
person.name = "Jane Doe"
}
}
}
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.