saving data array causes crash swift

问题

I tried adding an item to an arrar and saving in Userdefault but the app crashed and I would love anyone to point me to what I am doing wrong

private func putArray(_ value: GMSAutocompletePrediction?, forKey key: String) {
        guard let value = value else {
            return
        }
        log("THE MESSAGE \(value)", .fuck)
        var newArray = getArray(forKey: key)
        log("THE MESSAGE ARRAY \(newArray)", .fuck)
        if newArray.contains(value) {
            newArray.remove(at: newArray.firstIndex(of: value)!)
        } else {
            newArray.append(value)
        }

        storage.setValue(NSKeyedArchiver.archivedData(withRootObject: newArray), forKey: key)
    }

error from crash

[GMSAutocompletePrediction encodeWithCoder:]: unrecognized selector sent to instance 0x2818f9ce0 2019-09-26 13:40:07.300856+0100 MAX.NG Staging Debug[4440:1410011] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[GMSAutocompletePrediction encodeWithCoder:]: unrecognized selector sent to instance 0x2818f9ce0'

回答1:

GMSAutocompletePrediction doesn't conform to NSCoding so you can't save it to user defaults , you may extract important details from it and make a custom model to save

来源：https://stackoverflow.com/questions/58117112/saving-data-array-causes-crash-swift