[英]Setting a value in a function as a variable outside the function (Swift)
I want to grab newRecordLat and newRecordLong and save them as a variable outside the function.我想获取 newRecordLat 和 newRecordLong 并将它们保存为函数外部的变量。 The purpose is because I want to store these variables in a database.
目的是因为我想将这些变量存储在数据库中。 They are currently outputting in CLLocationDegrees, not a string, int, float, or double.
它们当前以 CLLocationDegrees 输出,而不是字符串、整数、浮点数或双精度数。 I did read somewhere that CLLocationDegrees is a double...
我确实在某处读到 CLLocationDegrees 是一个双重...
func textFieldShouldReturn(textField: UITextField!) -> Bool {
localSearchRequest = MKLocalSearchRequest()
localSearchRequest.naturalLanguageQuery = addressTextField.text
println(addressTextField.text)
println("addressTextField.text^^")
localSearch = MKLocalSearch(request: localSearchRequest)
localSearch.startWithCompletionHandler { (localSearchResponse, error) -> Void in
println(localSearchResponse)
println("localSearchResponse^^")
if localSearchResponse == nil{
var alert = UIAlertView(title: nil, message: "Place not found", delegate: self, cancelButtonTitle: "Try again")
alert.show()
return
}
//GRAB newRecordLat and newRecordLong AND STORE THEM OUTSIDE THE FUNCTION
var newRecordLat = localSearchResponse.boundingRegion.center.latitude
var newRecordLong = localSearchResponse.boundingRegion.center.longitude
}
You should declare your newRecordLat
and newRecordLong
variables as properties of your class.您应该将
newRecordLat
和newRecordLong
变量声明为类的属性。 To do this, move both declarations out side of textFieldShouldReturn(_:)
.为此,请将两个声明移出
textFieldShouldReturn(_:)
。
class MyClass: UITextFieldDelegate {
var newRecordLat: CLLocationDegrees?
var newRecordLong: CLLocationDegrees?
...
...
func textFieldShouldReturn(textField: UITextField!) -> Bool {
localSearchRequest = MKLocalSearchRequest()
localSearchRequest.naturalLanguageQuery = addressTextField.text
println(addressTextField.text)
println("addressTextField.text^^")
localSearch = MKLocalSearch(request: localSearchRequest)
localSearch.startWithCompletionHandler { (localSearchResponse, error) -> Void in
println(localSearchResponse)
println("localSearchResponse^^")
if localSearchResponse == nil {
var alert = UIAlertView(title: nil, message: "Place not found", delegate: self, cancelButtonTitle: "Try again")
alert.show()
return
}
self.newRecordLat = localSearchResponse.boundingRegion.center.latitude
self.newRecordLong = localSearchResponse.boundingRegion.center.longitude
}
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