Question

I’m working on an iOS app and am having some trouble with making a http request using AFNetworking.

When I run the code I get the error: EXC_BAD_ACCESS(code=2 address=0x0).
The error is occurring when I attempt to setCompletionBlock.

I’m new to Objective-C and this has me stumped.

Thank you in advance. Everyone’s help is appreciated!

#import "AFNetworking.h"
#import <Cordova/CDV.h>
#import "UploadImg.h"

@implementation UploadImg

- (void) uploadImg:(NSMutableArray*)arguments withDict:(NSMutableDictionary*)options{
    NSURL *url = [NSURL URLWithString:@"http://test.com/mobile/"];
    AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url];

    NSData *imageData = [NSData dataFromBase64String:[arguments objectAtIndex:1]];

    NSMutableDictionary *params = [[NSMutableDictionary alloc] init];
    [params setObject:@"TEST_STYLE" forKey:@"styleType"];

    NSMutableURLRequest *request = [httpClient multipartFormRequestWithMethod:@"POST" path:@"/upload.php" parameters:params constructingBodyWithBlock: ^(id <AFMultipartFormData>formData) {
        [formData appendPartWithFileData:imageData name:@"imageName" fileName:@"image.png" mimeType:@"image/png"];
    }];

    AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc]initWithRequest:request];

    [operation  setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
        NSLog(@"success");
    } 
    failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"error");
    }];

    [operation start];
}

@end

Thanks again!

Answer 1

I was able to solve this by changing the build settings.

Under the linking header change the “Other linker flags”, click the entry for -weak_library and replace it with -weak-lSystem

From question: Use of Blocks crashes app in iPhone Simulator 4.3/XCode 4.2 and 4.0.2