Question

我想使用textfield添加来自用户的经度和纬度，并且该值传入PFGeoPoint.But Textfield值是不考虑PFGeoPoint的字符串。我的代码是：

@IBOutlet weak var latitue_filed: UITextField!
@IBOutlet weak var longitudead: UITextField!

   let lati :  = (latitue_filed.text as? PFGeoPoint)!
   let lon :  = (longitudead.text as? PFGeoPoint)!

  let myGeoPoint = PFGeoPoint(latitude: lat, longitude: lon)
    posts["location"] = myGeoPoint
    posts.saveInBackgroundWithBlock {
        (success: Bool, error: NSError?) -> Void in
        if (success) {
            // The object has been saved.
        } else {
            // There was a problem, check error.description
        }
    }
    posts.saveInBackground()`

这里latitue_filed和longitudead是textfield。如何在PfGeopint中传递文本字段值。

Answer 1

根据documentation，PFGeoPoint实际上是PFObject，它使用双精度latitude和longitude（都是度数）并将它们嵌在一起。您当前正在将字符串值从文本字段转换为单个PFGeoPoints。将字符串值转换为double，并使用文档中描述的方法创建PFGeoPoint。

let lati = Double(latitue_filed.text)
let lon = Double(longitudead.text)

let myGeoPoint = PFGeoPoint(latitude: lat, longitude: lon)
posts["location"] = myGeoPoint
posts.saveInBackgroundWithBlock {
    (success: Bool, error: NSError?) -> Void in
    if (success) {
        // The object has been saved.
    } else {
        // There was a problem, check error.description
    }
}

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