从 CloudKit 检索数据时遇到问题
Having trouble retrieving data from CloudKit
我无法从 cloudkit 获取位置。该位置已上传,但当我尝试将它们打印出来并加载时,它们并未下载。我没有收到任何错误。
此函数将位置上传到 CloudKit:
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation])
{
let location = locations.last
let center = CLLocationCoordinate2D(latitude: location!.coordinate.latitude, longitude: location!.coordinate.longitude)
let region = MKCoordinateRegion(center: center, span: MKCoordinateSpan(latitudeDelta: 0.015, longitudeDelta: 0.015))
self.mapView.setRegion(region, animated: true)
self.locationManager.stopUpdatingLocation()//
let locationRecord = CKRecord(recordType: "location")
locationRecord.setObject(location, forKey: "location")
let publicData = CKContainer.defaultContainer().publicCloudDatabase
publicData.saveRecord(locationRecord) { record, error in
}
if error == nil
{
print("Location saved")
}
event1 = locations
}
此函数从 CloudKit:
获取位置
func loadLocation()
{
let locations = [CKRecord]()
let publicData1 = CKContainer.defaultContainer().publicCloudDatabase
let query1 = CKQuery(recordType: "location", predicate: NSPredicate(format: "TRUEPREDICATE", argumentArray:nil))
publicData1.performQuery(query1, inZoneWithID: nil) { (results: [CKRecord]?, error: NSError?) -> Void in
if let locations = results
{
self.locations = locations
print(locations)
}
}
}
如果您的问题是检索 CLLocation
的数组,试试这个:
publicData1.performQuery(query1, inZoneWithID: nil) { records, error in
var locations = [CLLocation]()
if let records = records {
for record in records {
if let location = record["location"] as? CLLocation {
locations.append(location)
}
}
}
}
为此我做了一个单元测试,它通过了:
//
// CloudKitLocationsTests.swift
//
import XCTest
import UIKit
import CoreLocation
import CloudKit
class CloudKitLocationsTests: XCTestCase {
let locations = [ CLLocation(latitude: 34.4, longitude: -118.33), CLLocation(latitude: 32.2, longitude: -121.33) ]
func storeLocationToCloud(location:CLLocation) {
let locationRecord = CKRecord(recordType: "location")
locationRecord.setObject(location, forKey: "location")
let publicData = CKContainer.defaultContainer().publicCloudDatabase
publicData.saveRecord(locationRecord) { (records, error) in
if error != nil {
print("error saving locations: \(error)")
} else {
print("Locations saved: \(records)")
}
}
}
func fetchLocationsFromCloud(completion: (error:NSError?, records:[CKRecord]?) -> Void) {
let query = CKQuery(recordType: "Location", predicate: NSPredicate(value: true))
CKContainer.defaultContainer().publicCloudDatabase.performQuery(query, inZoneWithID: nil){
(records, error) in
if error != nil {
print("error fetching locations")
completion(error: error, records: nil)
} else {
print("found locations: \(records)")
completion(error: nil, records: records)
}
}
}
func testSavingLocations(){
let testExpectation = expectationWithDescription("saveLocations")
var n = 0
for location in self.locations {
let locationRecord = CKRecord(recordType: "Location")
locationRecord["location"] = location
let publicData = CKContainer.defaultContainer().publicCloudDatabase
publicData.saveRecord(locationRecord) { (records, error) in
if error != nil {
print("error saving locations: \(error)")
} else {
print("Locations saved: \(records)")
}
n += 1
if n >= self.locations.count {
testExpectation.fulfill()
}
}
}
// do something then call fulfill (in callback)
waitForExpectationsWithTimeout(10){ error in
if error != nil {
XCTFail("timed out waiting on expectation: \(testExpectation)")
}
}
}
func testFetchingLocations(){
let testExpectation = expectationWithDescription("FetchLocations")
fetchLocationsFromCloud(){ (error, records) in
if error != nil {
XCTFail("error fetching locations")
} else {
XCTAssertGreaterThan(records!.count, 0)
}
// do something then call fulfill (in callback)
testExpectation.fulfill()
}
waitForExpectationsWithTimeout(10){ error in
if error != nil {
XCTFail("timed out waiting on expectation: \(testExpectation)")
}
}
}
}
请注意,您的大小写不匹配 Location/location。另外,我正在做一个下标来设置字段值。
运行 这行得通。从位置管理器回调中获取位置与 CloudKit 无关,因此您应该可以根据需要插入它。
另一件事:我确实打开了允许您在 ID 字段上查询位置记录类型的选项。
我无法从 cloudkit 获取位置。该位置已上传,但当我尝试将它们打印出来并加载时,它们并未下载。我没有收到任何错误。
此函数将位置上传到 CloudKit:
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation])
{
let location = locations.last
let center = CLLocationCoordinate2D(latitude: location!.coordinate.latitude, longitude: location!.coordinate.longitude)
let region = MKCoordinateRegion(center: center, span: MKCoordinateSpan(latitudeDelta: 0.015, longitudeDelta: 0.015))
self.mapView.setRegion(region, animated: true)
self.locationManager.stopUpdatingLocation()//
let locationRecord = CKRecord(recordType: "location")
locationRecord.setObject(location, forKey: "location")
let publicData = CKContainer.defaultContainer().publicCloudDatabase
publicData.saveRecord(locationRecord) { record, error in
}
if error == nil
{
print("Location saved")
}
event1 = locations
}
此函数从 CloudKit:
获取位置func loadLocation()
{
let locations = [CKRecord]()
let publicData1 = CKContainer.defaultContainer().publicCloudDatabase
let query1 = CKQuery(recordType: "location", predicate: NSPredicate(format: "TRUEPREDICATE", argumentArray:nil))
publicData1.performQuery(query1, inZoneWithID: nil) { (results: [CKRecord]?, error: NSError?) -> Void in
if let locations = results
{
self.locations = locations
print(locations)
}
}
}
如果您的问题是检索 CLLocation
的数组,试试这个:
publicData1.performQuery(query1, inZoneWithID: nil) { records, error in
var locations = [CLLocation]()
if let records = records {
for record in records {
if let location = record["location"] as? CLLocation {
locations.append(location)
}
}
}
}
为此我做了一个单元测试,它通过了:
//
// CloudKitLocationsTests.swift
//
import XCTest
import UIKit
import CoreLocation
import CloudKit
class CloudKitLocationsTests: XCTestCase {
let locations = [ CLLocation(latitude: 34.4, longitude: -118.33), CLLocation(latitude: 32.2, longitude: -121.33) ]
func storeLocationToCloud(location:CLLocation) {
let locationRecord = CKRecord(recordType: "location")
locationRecord.setObject(location, forKey: "location")
let publicData = CKContainer.defaultContainer().publicCloudDatabase
publicData.saveRecord(locationRecord) { (records, error) in
if error != nil {
print("error saving locations: \(error)")
} else {
print("Locations saved: \(records)")
}
}
}
func fetchLocationsFromCloud(completion: (error:NSError?, records:[CKRecord]?) -> Void) {
let query = CKQuery(recordType: "Location", predicate: NSPredicate(value: true))
CKContainer.defaultContainer().publicCloudDatabase.performQuery(query, inZoneWithID: nil){
(records, error) in
if error != nil {
print("error fetching locations")
completion(error: error, records: nil)
} else {
print("found locations: \(records)")
completion(error: nil, records: records)
}
}
}
func testSavingLocations(){
let testExpectation = expectationWithDescription("saveLocations")
var n = 0
for location in self.locations {
let locationRecord = CKRecord(recordType: "Location")
locationRecord["location"] = location
let publicData = CKContainer.defaultContainer().publicCloudDatabase
publicData.saveRecord(locationRecord) { (records, error) in
if error != nil {
print("error saving locations: \(error)")
} else {
print("Locations saved: \(records)")
}
n += 1
if n >= self.locations.count {
testExpectation.fulfill()
}
}
}
// do something then call fulfill (in callback)
waitForExpectationsWithTimeout(10){ error in
if error != nil {
XCTFail("timed out waiting on expectation: \(testExpectation)")
}
}
}
func testFetchingLocations(){
let testExpectation = expectationWithDescription("FetchLocations")
fetchLocationsFromCloud(){ (error, records) in
if error != nil {
XCTFail("error fetching locations")
} else {
XCTAssertGreaterThan(records!.count, 0)
}
// do something then call fulfill (in callback)
testExpectation.fulfill()
}
waitForExpectationsWithTimeout(10){ error in
if error != nil {
XCTFail("timed out waiting on expectation: \(testExpectation)")
}
}
}
}
请注意,您的大小写不匹配 Location/location。另外,我正在做一个下标来设置字段值。
运行 这行得通。从位置管理器回调中获取位置与 CloudKit 无关,因此您应该可以根据需要插入它。
另一件事:我确实打开了允许您在 ID 字段上查询位置记录类型的选项。