I am using AFNetworking and can successfully download a file.
At the end of the download, it does not appear in the directory that I set it to be though.
I did some searching and came across a few questions here on SO where it is suggested I use:
[_operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
But that comes up with an error and it is as far as I can tell not mentioned in their documentation.
the error is :
/Users/Jeff/Documents/Dropbox-01/Dropbox/Xcode Projects/Try Outs - JEFF/testDownload/testDownload/JWKDownloadViewController.m:177:10: No visible #interface for 'AFURLConnectionOperation' declares the selector 'setCompletionBlockWithSuccess:failure:'
Is there an updated line I need to use???
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:#"..."]];
AFHTTPRequestOperation *operation = [[[AFHTTPRequestOperation alloc] initWithRequest:request] autorelease];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *path = [[paths objectAtIndex:0] stringByAppendingPathComponent:#"filename"];
operation.outputStream = [NSOutputStream outputStreamToFileAtPath:path append:NO];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(#"Successfully downloaded file to %#", path);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
}];
[operation start];
Yes make sure that u have used correct path into NSOutputStream
Add this:
[_operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(#"Successfully downloaded file");
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
}];
[_operation start];
Related
I'm moving my app code to an MVC model and so I created a method to retrieve some data from an API.
+ (NSMutableArray *)loadFromFeed {
NSString *feed = #"https://api.test.com";
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:feedUrl]];
request = [mutableRequest copy];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
operation.responseSerializer = [JSONResponseSerializerWithData serializer];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
NSArray *jsonArray = (NSArray *)[responseObject objectForKey:#"items"];
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
CLS_LOG(#"Error");
}];
}
Now, ideally, I'd like to return jsonArray as part of this method. However, since AFHTTPRequestOperation is asynchronous, I don't know how to solve this and still be able to call [Data loadFromFeed]; anywhere in the app. How can I do this?
You could pass two block named success and failure to loadFromFeed ,
and then call the two block from your setCompletionBlockWithSuccess success and failure block, passing jsonArray to the success block:
typedef void (^Success)(id data);
typedef void (^Failure)(NSError *error);
- (void)loadFromFeed:(Success)success failure:(Failure)failure;
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
NSArray *jsonArray = (NSArray *)[responseObject objectForKey:#"items"];
success?success(jsonArray):nil;
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
failure?failure(error):nil;
}];
then use in this way:
[Data loadFromFeed:^(id data) {
NSLog(#"%#",data)
} failure:^(NSError *error) {
NSLog(#"%#",error)
}];];
I'm trying to have my app load an HTML web page into a "responseObject" that I can later parse.
Here is my code:
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.requestSerializer = [AFHTTPRequestSerializer serializer];
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:#"application/xhtml+xml"];
NSDictionary *parameters = #{#"ghinno": #"1151213"};
[manager GET:#"http://m.ghin.com/HLR.aspx" parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(#"HTTP: %#", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
}];
...and this is the output. I should be seeing the html from the webpage. Can you help me understand what I am doing wrong?
Ah, the answer lies below...
Essentially, it was an encoding / decoding of the response object that was causing my issues. Here is the final solution: (notice the line beginning with "NSString)...
NSURL *URL = [NSURL URLWithString:#"http://m.ghin.com/HLR.aspx?ghinno=1151213"];
NSURLRequest *request = [NSURLRequest requestWithURL:URL];
AFHTTPRequestOperation *op = [[AFHTTPRequestOperation alloc] initWithRequest:request];
[op setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
NSString *string = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
NSLog(#"%#", string);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
}];
[op start];
I tried to make GET HTTP response. I need to get the html code for the subsequent parsing, but responseObject is nil.
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:#"text/html"];
[manager GET:#"http://www.example.com/" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSError *error;
HTMLParser *parser = [[HTMLParser alloc] initWithString:responseObject error:&error];
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
}];
For get html code we will need to build a custom response serializer to decode the NSData response from the web server into a NSString. We will need to subclass AFHTTPResponseSerializer and implement the following method:
- (id)responseObjectForResponse:(NSURLResponse *)response
data:(NSData *)data
error:(NSError *__autoreleasing *)error
{
return [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding];
}
Why for example you have not use this solution below instead of subcalssing. It does the same thing, but you don't need to create additional files, just for overload one method.
So you can just add encoding your responseObjet in the block for example, and it will work as well. I am using POST in my example but it should work with GET in the same way but without parameters, but idea of the just conversation.
+ (void)makeRequestWithParams:(NSDictionary *)params
success:(OperationCompletionBlock)success
failure:(OperationCompletionBlock)failure
{
NSString *path = #"http://www.example.com/";
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.responseSerializer = [AFCompoundResponseSerializer serializer];
manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:#"text/html"];
[manager POST:path parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSString* encodedString = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
NSLog(#"%#", encodedString);
success(nil);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
failure(nil);
}];
}
I have a function using AFJSONRequestOperation, and I wish to return the result only after success. Could you point me in the right direction? I'm still a bit clueless with blocks and AFNetworking specifically.
It would have been better if you had posted your code
Using __block you can use variable inside block
__block NSString *msg;
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
[hud hide:YES];
NSLog(#"Success %#", operation.responseString);
NSDictionary *message = [NSJSONSerialization JSONObjectWithData:[operation.responseString dataUsingEncoding:NSUTF8StringEncoding] options:NSJSONReadingMutableContainers error:nil];
NSLog(#"%#",message);
msg = message
ALERT(#"Posted", message[#"message"]);
}
failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"error: %#", operation.responseString);
NSLog(#"%#",error);
}];
[operation start];
I'm using this code to loop through an array to download multiple files and write to disk.
-(void)download
{
//set url paths
for (NSString *filename in syncArray)
{
NSString *urlpath = [NSString stringWithFormat:#"http://foo.bar/photos/%#", filename];
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:urlpath]];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *path = [[paths objectAtIndex:0] stringByAppendingPathComponent:filename];
operation.outputStream = [NSOutputStream outputStreamToFileAtPath:path append:NO];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(#"Successfully downloaded file to %#", path);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
}];
[operation start];
but the problem is it calls the success block after each file is done, (which it should) but I just need one final call back to reload some data and end a progress HUD.
Any pointers in the right direction would be great.
Maybe someday this will help someone, but I was able to use a workaround that probably has major issues but its okay for my simple usage.
I just deleted each line from the sync array after it was processed then ran my code i needed.
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(#"Successfully downloaded file to %#", path);
[SVProgressHUD showWithStatus:#"Updating Photos"];
[syncArray removeObject:filename];
if (!syncArray || !syncArray.count)
{
NSLog(#"array empty");
[[NSNotificationCenter defaultCenter] postNotificationName:#"TestNotification" object:self];
[SVProgressHUD dismissWithSuccess:#"Photos Updated"];
}
You can use AFHTTPClient to enqueueBatchOperations and this has a completionBlock which is called when all operations are finished. Should be exactly what you're looking for.