将字符串转换为整数iOS + Swift 2.0

Question

我正在访问天气API,当我解析JSON时,结果是一个字符串.因为,我访问的值是一个数字,我想将其转换为整数,但是当字符串具有十进制值时,该字符串不会转换为int.我的代码:

let UVIndex = swiftyJSON["current_observation"]["UV"].stringValue
let cityName = swiftyJSON["current_observation"]["display_location"]["full"].stringValue
if let UVIndexInt = Int(UVIndex) {
    print("Successfully converted! \(UVIndexInt)")
    self.UVIndexString = String(stringInterpolationSegment: UVIndex)
}
dispatch_async(dispatch_get_main_queue()) {
    self.UVIndexButton.setTitle(self.UVIndexString, forState: UIControlState.Normal)
    self.cityName.text = cityName
}

Answer 1

您可以尝试将转换String为Double然后转换为Int.

let text = "1.1"

if let textAsDouble = Double(text) {
    let textAsInt = Int(textAsDouble)
    print(textAsInt)
}