Getting crash when "<null>" as response from api is received in SWIFT - ios

Question

Getting the image url null as response from api, is there any way for fix it. Response from api is:
"image_path" = "<null>";
Tried to handle it like this:
if !(arrList.objectAtIndex(indexPath.row).valueForKey("media")?.objectAtIndex(0).valueForKey("image_path") is NSNull) {
// optional is NOT NULL, neither NIL nor NSNull
}
It is still crashing please guide.
Update:
Found the problem, null was not the issue actually. Posting the response below to make things clear.
media = (
{
id = "97eb48a0-429a-11e6-873c-ad7b848648f1";
"image_path" = "https://s3-eu-west-1.mazws.com/facebook_profile_images/15105131.png";
"room_post_id" = "97c572e0-429a-11e6-b72b-fd489f63a1fc";
"user_id" = "66fe22a0-4296-11e6-a1d9-69dc307add4b";
"video_path" = "<null>";
},
{
id = "981a6880-429a-11e6-b039-736a0bf954dc";
"image_path" = "<null>";
"room_post_id" = "97c572e0-429a-11e6-b72b-fd489f63a1fc";
"user_id" = "66fe22a0-4296-11e6-a1d9-69dc307add4b";
"video_path" = "https://s3-eu-west-1.naws.com/facebook_profile_images/1255803.mp4";
}
);
This is the normal response, now the response where trouble is:
media = (
);
Can it be handle any how? Please guide.

Answer 1

Try like this .. it'll not crash
if let imgPath = arrList.objectAtIndex(indexPath.row).valueForKey("media")?.objectAtIndex(0).valu‌​eForKey("image_path") as? String {
//... your value is string
}

Answer 2

Let me guess types by information you provided:
if let arrList = arrList as? NSArray,
firstObject = arrList.objectAtIndex(indexPath.row) as? NSDictionary,
media = firstObject.valueForKey("media") as? NSArray,
secondObject = media.objectAtIndex(0) as? NSDictionary,
image_path = secondObject.valueForKey("image_path") as? String {
print(image_path)
// now validate your string
}
Validating your string can be like this:
if !image_path.isEmpty && image_path != "<null>" {
//do something
}
or like this:
if !image_path.isEmpty {
if let image_pathURL = NSURL(string: image_path), _ = image_pathURL.host {
//do something
}
}

Answer 3

Why don't to simple check with == like:
if !(arrList.objectAtIndex(indexPath.row).valueForKey("media")?.objectAtIndex(0).valueForKey("image_path") == "<null>")

Answer 4

if let image = myJson["image_path"] as? String {
imageView.image = image
}
else {
imageview.image = "default.png"
}
also try this
if !(arrList.objectAtIndex(indexPath.row).valueForKey("media")?.objectAtIndex(0).valueForKey("image_path") == "<null>") {
// optional is NOT NULL, neither NIL nor NSNull
}