字符串数组未转换为 swift 中的 url

Question

I have a array which is declared as below var photoarray = String The values which are in the photoarray is as follows:

["https://res.cloudinary.com/dtwvevtm7/image/upload/v1606166095/wdfub3plecnhmixbwtgw.jpg", " https://res.cloudinary.com/dtwvevtm7/image/upload/v1606166095/dbzvkv8qhtwhgbocuzwb.jpg"]

Since it is an array, it is passed into for loop and this string is converted to URL. When it is converted to url, it is showing

Fatal error: Unexpectedly found nil while unwrapping an Optional value.

The code which is used to retrieve the url is as follows:

for i in 0..<self.photoarray.count
{
    let url = URL(string: self.photoarray[i])
    print("url is", url)
    self.images.append(LightboxImage(imageURL: url!))
}

It is showing the first value of the array when url is printed, but the next value is showing nil . What is the issue?

Answer 1

There is a blank space in the first character of your second url string in the photoarray . Remove it. URL initializer returns nil if the string doesn't represent a valid URL. Also its better not using force unwrapping here.