[英]AFNetworking: enqueueBatchOfHTTPRequestOperations issue with completion block
[英]Completion Block AFNetworking in Swift
我正在使用基于AFNetworking的Objective-C与iOS进行通信的iOS应用。 现在,我正在用Swift编写新的ViewController,并且在Swift文件中的CompletionBlock遇到了一些问题。
原始的Objective-C代码:
- (void)downloadJson {
[[ODDWebService sharedInstance] getParkingSpacesWithCompletionBlock:^(NSArray *result, BOOL succes) {
if(succes) {
[self.parkings removeAllObjects];
for(NSDictionary *dict in result) {
Parking *parking = [[Parking alloc] init];
parking.name = [dict objectForKey:@"name"];
parking.freespace = [[dict objectForKey:@"freespace"] integerValue];
[self.parkings addObject:parking];
}
[self updateParkings];
} else {
NSLog(@"ERROR RETRIEVING PARKING SPACES");
}
}];
}
这就是我认为应该在Swift中执行的操作:
func downloadJson() {
ODDWebService.sharedInstance().getParkingSpacesWithCompletionBlock { (result: AnyObject, succes: Bool) -> Void in
if(succes) {
self.parkings.removeAllObjects()
for dict: NSDictionary in result {
var parking: Parking = Parking
parking.name = dict["name"]
parking.freespace = dict["freespace"].integerValue()
parkings.addObject(parking)
} else {
NSLog("ERROR RETRIEVING PARKING SPACES")
}
}
}
}
主要错误在第二行代码中找到:
'(AnyObject, Bool) -> Void' is not convertible to '(([AnyObject]!, Bool) -> Void)!'
您正在尝试将NSArray强制转换为Anyobject。 您可以尝试以下代码:
func downloadJson() {
ODDWebService.sharedInstance().getParkingSpacesWithCompletionBlock { (result: [AnyObject]!, success: Bool) -> Void in
if(succes) {
self.parkings.removeAllObjects()
for dict in result as NSArray {
var parking: Parking = Parking
parking.name = dict["name"]
parking.freespace = dict["freespace"].integerValue()
parkings.addObject(parking)
} else {
NSLog("ERROR RETRIEVING PARKING SPACES")
}
}
}
}
更换
func downloadJson() {
ODDWebService.sharedInstance().getParkingSpacesWithCompletionBlock { (result: AnyObject, succes: Bool) -> Void in
if(succes) {
同
func downloadJson() {
ODDWebService.sharedInstance().getParkingSpacesWithCompletionBlock {
result, success in
if(succes) {
还将以下代码中的第一行添加到您的代码中。
if let dicts = result as? NSDictionary<String, AnyObject> {
for dict: NSDictionary in dicts {
var parking: Parking = Parking
parking.name = dict["name"]
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