I'm getting JSON from a web service in the following format:

Question

ahmed2016 OP

Created Jun ’22

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https://imdb-api.com/en/API/BoxOffice/k_92uqzcls Screen Shot 1443-11-18 at 2.28.38 AM.png

i cast data like this : let output = try JSONSerialization.jsonObject(with: data, options: .allowFragments) as! Dictionary<String,Array<Dictionary<String, Any>>>//Array

error: Could not cast value of type '__NSCFConstantString' (0x7fff869ca888) to 'NSArray' (0x7fff869ca8e8).

Answered by DTS Engineer in 717702022

Casting to a very complex type like this as not best practice. Rather, do the following:

Continue using JSONSerialization and cast one level at a time.
Switch to using JSONDecoder. See Encoding and Decoding Custom Types.

The second option is best if the JSON uses a regular format, and that certainly looks like the case here. I generally only use the first option if the JSON is highly irregular, and thus I need to check stuff as I decode it.

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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

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Answer 1

DTS Engineer OP

Apple

Jun ’22

Accepted Answer

Casting to a very complex type like this as not best practice. Rather, do the following:

Continue using JSONSerialization and cast one level at a time.
Switch to using JSONDecoder. See Encoding and Decoding Custom Types.

The second option is best if the JSON uses a regular format, and that certainly looks like the case here. I generally only use the first option if the JSON is highly irregular, and thus I need to check stuff as I decode it.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

0