AFNetworking responseObject contains hex - how do I check for that?
I am developing an app and an API that the app will talk to. I am pretty new to the developing an app side of thing!
Although the API should always return valid JSON, I want to handle the case where something goes wrong and it returns HTML (think DNS screwup).
I am using AFNetworking and self.sessionmanager is an AFHTTPSessionManager
Right now, my (very simplified) code says :
[self.sessionmanager GET:@"/app/api/v1/meetings/" parameters:params progress:^(NSProgress * _Nonnull downloadProgress) {
} success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) {
if ([responseObject containsObject:@"status"]) {
// Do stuff
}
else {
// Do failure stuff
}
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
// Do failure stuff
return;
}];
The problem is that if I arrive at the success function with an HTML page instead of JSON, I get a responseObject that is hex and when I call containsObject I get an NSInvalidArgumentException with unrecognized selector sent to instance.
I tried putting a @try @catch block around the containsObject call, but it didn't seem to catch the exception.
How can I check whether responseObject is a valid object from a JSON response, in order to avoid the call to containsObject when required?
ios xcode afnetworking
asked Nov 15 '18 at 17:49
Ben HolnessBen Holness
1,01811733
add a comment |
I am developing an app and an API that the app will talk to. I am pretty new to the developing an app side of thing!
Although the API should always return valid JSON, I want to handle the case where something goes wrong and it returns HTML (think DNS screwup).
I am using AFNetworking and self.sessionmanager is an AFHTTPSessionManager
Right now, my (very simplified) code says :
[self.sessionmanager GET:@"/app/api/v1/meetings/" parameters:params progress:^(NSProgress * _Nonnull downloadProgress) {
} success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) {
if ([responseObject containsObject:@"status"]) {
// Do stuff
}
else {
// Do failure stuff
}
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
// Do failure stuff
return;
}];
The problem is that if I arrive at the success function with an HTML page instead of JSON, I get a responseObject that is hex and when I call containsObject I get an NSInvalidArgumentException with unrecognized selector sent to instance.
I tried putting a @try @catch block around the containsObject call, but it didn't seem to catch the exception.
How can I check whether responseObject is a valid object from a JSON response, in order to avoid the call to containsObject when required?
ios xcode afnetworking
asked Nov 15 '18 at 17:49
Ben HolnessBen Holness
1,01811733
Check ifresponseObjectis aNSArrayor aNSDictionary, withif ([responseObject isKindOfClass[NSArray class]]){}, etc.. But it's strange, because if I remember correctly and if you use aAFHTTPResponseSerializerset toAFJSONResponseSerializeryou should have the guarantee that the response is always JSON and so be nil (with an error, calling the failure block?) in case that the response is HTML.
– Larme
Nov 15 '18 at 18:27
@Larme - that did it, thanks. Not sure how I'm getting the response through though!
– Ben Holness
Nov 15 '18 at 19:19
add a comment |
I am developing an app and an API that the app will talk to. I am pretty new to the developing an app side of thing!
Although the API should always return valid JSON, I want to handle the case where something goes wrong and it returns HTML (think DNS screwup).
I am using AFNetworking and self.sessionmanager is an AFHTTPSessionManager
Right now, my (very simplified) code says :
[self.sessionmanager GET:@"/app/api/v1/meetings/" parameters:params progress:^(NSProgress * _Nonnull downloadProgress) {
} success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) {
if ([responseObject containsObject:@"status"]) {
// Do stuff
}
else {
// Do failure stuff
}
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
// Do failure stuff
return;
}];
The problem is that if I arrive at the success function with an HTML page instead of JSON, I get a responseObject that is hex and when I call containsObject I get an NSInvalidArgumentException with unrecognized selector sent to instance.
I tried putting a @try @catch block around the containsObject call, but it didn't seem to catch the exception.
How can I check whether responseObject is a valid object from a JSON response, in order to avoid the call to containsObject when required?
ios xcode afnetworking
asked Nov 15 '18 at 17:49
Ben HolnessBen Holness
1,01811733
I am developing an app and an API that the app will talk to. I am pretty new to the developing an app side of thing!
Although the API should always return valid JSON, I want to handle the case where something goes wrong and it returns HTML (think DNS screwup).
I am using AFNetworking and self.sessionmanager is an AFHTTPSessionManager
Right now, my (very simplified) code says :
[self.sessionmanager GET:@"/app/api/v1/meetings/" parameters:params progress:^(NSProgress * _Nonnull downloadProgress) {
} success:^(NSURLSessionDataTask * _Nonnull task, id _Nullable responseObject) {
if ([responseObject containsObject:@"status"]) {
// Do stuff
}
else {
// Do failure stuff
}
} failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
// Do failure stuff
return;
}];
The problem is that if I arrive at the success function with an HTML page instead of JSON, I get a responseObject that is hex and when I call containsObject I get an NSInvalidArgumentException with unrecognized selector sent to instance.
I tried putting a @try @catch block around the containsObject call, but it didn't seem to catch the exception.
How can I check whether responseObject is a valid object from a JSON response, in order to avoid the call to containsObject when required?
ios xcode afnetworking
ios xcode afnetworking
asked Nov 15 '18 at 17:49
Ben HolnessBen Holness
1,01811733
asked Nov 15 '18 at 17:49
Ben HolnessBen Holness
1,01811733
asked Nov 15 '18 at 17:49
Ben HolnessBen Holness
1,01811733
asked Nov 15 '18 at 17:49
Ben HolnessBen Holness
1,01811733
asked Nov 15 '18 at 17:49
Ben HolnessBen Holness
1,01811733
1,01811733
Check ifresponseObjectis aNSArrayor aNSDictionary, withif ([responseObject isKindOfClass[NSArray class]]){}, etc.. But it's strange, because if I remember correctly and if you use aAFHTTPResponseSerializerset toAFJSONResponseSerializeryou should have the guarantee that the response is always JSON and so be nil (with an error, calling the failure block?) in case that the response is HTML.
– Larme
Nov 15 '18 at 18:27
@Larme - that did it, thanks. Not sure how I'm getting the response through though!
– Ben Holness
Nov 15 '18 at 19:19
add a comment |
Check ifresponseObjectis aNSArrayor aNSDictionary, withif ([responseObject isKindOfClass[NSArray class]]){}, etc.. But it's strange, because if I remember correctly and if you use aAFHTTPResponseSerializerset toAFJSONResponseSerializeryou should have the guarantee that the response is always JSON and so be nil (with an error, calling the failure block?) in case that the response is HTML.
– Larme
Nov 15 '18 at 18:27
@Larme - that did it, thanks. Not sure how I'm getting the response through though!
– Ben Holness
Nov 15 '18 at 19:19
Check if
responseObject is a NSArray or a NSDictionary, with if ([responseObject isKindOfClass[NSArray class]]){}, etc.. But it's strange, because if I remember correctly and if you use a AFHTTPResponseSerializer set to AFJSONResponseSerializer you should have the guarantee that the response is always JSON and so be nil (with an error, calling the failure block?) in case that the response is HTML.– Larme
Nov 15 '18 at 18:27
Check if
responseObject is a NSArray or a NSDictionary, with if ([responseObject isKindOfClass[NSArray class]]){}, etc.. But it's strange, because if I remember correctly and if you use a AFHTTPResponseSerializer set to AFJSONResponseSerializer you should have the guarantee that the response is always JSON and so be nil (with an error, calling the failure block?) in case that the response is HTML.– Larme
Nov 15 '18 at 18:27
@Larme - that did it, thanks. Not sure how I'm getting the response through though!
– Ben Holness
Nov 15 '18 at 19:19
@Larme - that did it, thanks. Not sure how I'm getting the response through though!
– Ben Holness
Nov 15 '18 at 19:19
add a comment |
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Check if
responseObjectis aNSArrayor aNSDictionary, withif ([responseObject isKindOfClass[NSArray class]]){}, etc.. But it's strange, because if I remember correctly and if you use aAFHTTPResponseSerializerset toAFJSONResponseSerializeryou should have the guarantee that the response is always JSON and so be nil (with an error, calling the failure block?) in case that the response is HTML.– Larme
Nov 15 '18 at 18:27
@Larme - that did it, thanks. Not sure how I'm getting the response through though!
– Ben Holness
Nov 15 '18 at 19:19