我有一个名为Activity
的快速模型,可以选择附加coordinate
。
import MapKit
class Activity: NSObject {
var coordinate: CLLocationCoordinate2D?
class func objectMapping() -> RKObjectMapping {
let mapping = RKObjectMapping(forClass: self)
let coordinateMapping = RKAttributeMapping(fromKeyPath: "coordinate", toKeyPath: "coordinate")
coordinateMapping.valueTransformer = RKCLLocationCoordinate2DValueTransformer()
mapping.addPropertyMapping(coordinateMapping)
return mapping
}
}
启动我的应用程序时,这给了我:
2015-05-05 12:14:30.741示例[54338:531558] ***由于未捕获的异常终止应用程序' NSUnknownKeyException',原因:' [setValue:forUndefinedKey:]:这个类不是关键坐标符合关键值的编码。'
如果我将coordinate
更改为非可选项并提供默认值,则应用程序将运行。
所以我的问题是如何在关于Optionals的swift中使用RestKit?
答案 0 :(得分:0)
设置您的媒体资源dynamic
dynamic var coordinate: CLLocationCoordinate2D?
答案 1 :(得分:-1)
在我看来,你的应用因此行而崩溃
let mapping = RKObjectMapping(forClass: self)
let coordinateMapping = RKAttributeMapping(fromKeyPath: "coordinate", toKeyPath: "coordinate")
您想映射一个可选的属性/变量,但可能是在您调用objectMapping()
coordinate
时,您的import MapKit
class Activity: NSObject {
var coordinate: CLLocationCoordinate2D?
class func objectMapping() -> RKObjectMapping {
if let c = self. coordinate {
let mapping = RKObjectMapping(forClass: self)
let coordinateMapping = RKAttributeMapping(fromKeyPath: "coordinate", toKeyPath: "coordinate")
coordinateMapping.valueTransformer = RKCLLocationCoordinate2DValueTransformer()
mapping.addPropertyMapping(coordinateMapping)
return mapping
}
return nil
}
}
为零。
你有没有试过这样的事情:
let mapping = RKObjectMapping(forClass: self)
我不确定这是否有效,但我猜Activity
正在尝试映射您的整个班级coordinate
,这会导致您的代码崩溃,而var
ProcessHandle : THandle;
begin
ProcessHandle := OpenProcess(PROCESS_ALL_ACCESS, False, GetCurrentProcessId());
//Is PROCESS_ALL_ACCESS needed?
ShellExecute(0, 'open', 'App2.exe', PChar(IntToStr(ProcessHandle)), '.\', SW_SHOW);
end;
未设置此时时间。