iOS - getting image with AFNetworking keeps cache - ios

Question

In my app I'm using RESTKit, so my AFNetworking version isn't the newest. I'm not sure how to check the version of it.
I want to download a picture from my server, and because the response is a jpg file, I'm using AFNetworking. On the first download of the image, it works well. Then I delete the image on the server and upload a new image with the same name. Then if I delete the image in the app and re-download it. In this scenario I still get the old picture from the first time I downloaded.
This is my code:
AFHTTPClient *client = [AFHTTPClient clientWithBaseURL:[NSURL URLWithString:#"http://myserver.com"]];
[client setAuthorizationHeaderWithUsername:name password:password];
[client getPath:[NSString stringWithFormat:#"profile-images/%#.jpg", user.name] parameters:#{} success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(#"SUCCES");
NSData *imageData = responseObject;
self.tmpImage = [UIImage imageWithData:imageData];
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"FAIL");
self.tmpImage = [UIImage imageNamed:#"myImage.png"];
}];
It looks to me like the app "remembers" the first request I sent to the server when I downloaded the image. And then when I re-download it, it gives me the old picture. Does anyone know how to solve it?

Answer 1

I finally got this to work with using NSMutableURLRequest. When creating the request I set the cachePolicy to NSURLRequestReloadIgnoringLocalCacheData. Meaning: request.cachePolicy = NSURLRequestReloadIgnoringLocalCacheData;
Here is the code for sending the request to the server:
AFHTTPClient *client = [AFHTTPClient clientWithBaseURL:[NSURL URLWithString:#"http://server.com"]];
[client setAuthorizationHeaderWithUsername:name password:password];
NSMutableURLRequest *request = [client requestWithMethod:#"GET" path:[NSString stringWithFormat:#"profile-images/%#.jpg", user.name] parameters:nil];
request.timeoutInterval = 10;
request.cachePolicy = NSURLRequestReloadIgnoringLocalCacheData;
AFImageRequestOperation *operation;
operation = [AFImageRequestOperation imageRequestOperationWithRequest:request imageProcessingBlock:^UIImage *(UIImage *image) {
NSLog(#"block");
return image;
} success:^(NSURLRequest *request, NSHTTPURLResponse *response, UIImage *image) {
NSLog(#"SUCCES");
self.tmpImage = image;
} failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error) {
NSLog(#"FAIL");
self.tmpImage = [UIImage imageNamed:#"myImage.png"];
}];
[operation start];

Answer 2

when you upload image on server first of all save image in document directory with same name each time. in the code image save name is #""Profile1.jpeg"
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
UIImage *img = [info objectForKey:UIImagePickerControllerOriginalImage];
img = [self imageWithImage:img scaledToSize:CGSizeMake(70, 70)];
[btn_Photo setImage:img forState:UIControlStateNormal];
NSData *webData = UIImageJPEGRepresentation(img, 0.5);
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
self.savedImagePath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:#"%#",#"Profile1.jpeg"]];
[webData writeToFile:self.savedImagePath atomically:YES];
[picker dismissViewControllerAnimated:YES completion:^{
//[[UIApplication sharedApplication] setStatusBarHidden:YES];
}];
}
Using New ANetworking Upload image as below code New AFNetworking
AFHTTPRequestOperationManager *Manager = [AFHTTPRequestOperationManager manager];
[Manager POST:str_Submit parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData> formData)
{
NSURL *filePath_Profile_Logo = [NSURL fileURLWithPath:self.savedImagePath];
[formData appendPartWithFileURL:filePath_Profile_Logo name:#"userfile" error:nil];
}
success:^(AFHTTPRequestOperation *operation, id responseObject)
{
NSLog(#"Success");
}
failure:^(AFHTTPRequestOperation *operation, NSError *error)
{
NSLog(#"Fail")
}];
please check your document directory path image is change before upload it or not.
please