I need to upload image without showing user some progress indicator. So basically like when you upload image in twitter/instagram when you do the submit, the upload view disappear instantly and you back to main ui.
Currently I'm using AFNetworking to upload the content and it success. Been searching for the solutions but can't find anywhere.
This is my current code for uploading the image to my server.
- (void)sendImage {
HUD = [MBProgressHUD showHUDAddedTo:self.view animated:YES];
HUD.dimBackground = NO;
[HUD setLabelText:#"Uploading"];
NSString *url = [NSString stringWithFormat:#"%#%#",kBaseURL,#"api/v1/media"];
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
NSData *imageData = UIImageJPEGRepresentation(uploadImage, 1);
NSString *base64PhotoString = [imageData base64EncodedStringWithOptions:0];
NSDictionary *parameters = #{#"caption": textfield.text,
#"photo_data":base64PhotoString};
__weak typeof(self) weakSelf = self;
[manager POST:url
parameters:parameters
success:^(AFHTTPRequestOperation *operation, id responseObject) {
[weakSelf successBlockFrDictionary:responseObject];
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
[HUD hide:YES];
[weakSelf showErrorMessageForError:error];
}];
}
Related
I am using AFNetworking and download image if it is new image.
After I read though stackoverflow, currently, I am doing like this.
If the image is not modified, there will be cache in http header and I use that fact to check whether image is modified or not.
It is working well for most iOS. But, on iPhone 6s iOS 9.2.1, it always assume as new image.
How shall I detect whether image in server is modified already by using AFNetworking or may be NSUrlConnection?
- (void)downloadSplashScreenFromURL:(NSString *)urlStr
{
BOOL __block responseFromCache = YES; // yes by default
void (^requestSuccessBlock)(AFHTTPRequestOperation *operation, id responseObject) = ^(AFHTTPRequestOperation *operation, id responseObject) {
// response was returned from the server, not from cache
NSString *assestName = [urlStr lastPathComponent];
////WRITE TO FILEPATH
NSString *filePath = [splashDirectory() stringByAppendingString:
[NSString stringWithFormat:#"/%#", assestName]];
if (![[NSFileManager defaultManager] fileExistsAtPath:filePath]) {
DLog(#"Splash : Splash image is empty");
NSData *pngData = UIImagePNGRepresentation(responseObject);
[pngData writeToFile:filePath atomically:YES];
return ;
}
if (responseFromCache) {
// response was returned from cache
DLog(#"SPLASH - RESPONSE FROM CACHE: %#", responseObject);
}
else {
DLog(#"SPLASH - NEW IMAGES FROM SERVER \n Response: %#", responseObject);
NSData *pngData = UIImagePNGRepresentation(responseObject);
[pngData writeToFile:filePath atomically:YES];
[[NSUserDefaults standardUserDefaults] removeObjectForKey:USERDEFAULTS_SPLASH_SCREEN];
[[SplashHelper sharedInstance] showSplash:YES inWindow:[AppDelegate instance].window andSuccessBlock:^{
[[AppDelegate instance] startRunning];
}];
}
};
void (^requestFailureBlock)(AFHTTPRequestOperation *operation, NSError *error) = ^(AFHTTPRequestOperation *operation, NSError *error) {
NSInteger statusCode = operation.response.statusCode;
DLog(#"SPLASH - status code: %lu \nERROR: %#", (long)statusCode, [error localizedDescription]);
DLog(#"SPLASH - ERROR: %#", error);
};
DLog(#"Splash : CALL SPLASH SCREEN HELPER");
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
AFHTTPRequestOperation *operation = [manager GET:urlStr
parameters:nil
success:requestSuccessBlock
failure:requestFailureBlock];
[manager.requestSerializer setTimeoutInterval:3.0f];
operation.responseSerializer = [AFImageResponseSerializer serializer];
[operation setCacheResponseBlock:^NSCachedURLResponse *(NSURLConnection *connection, NSCachedURLResponse *cachedResponse) {
// this will be called whenever server returns status code 200, not 304
responseFromCache = NO;
DLog(#"Splash : cachedResponse = %#", cachedResponse);
return cachedResponse;
}];
}
I'm using #import "UIImageView+AFNetworking.h" category in my app to load an image from my server to app. Its working great, whenever an an update made for images on server, it'll generate new URLs, thus when I request with new URLs, AFNetworking will not find a cached image and will load new images from server.
And you should also check this, How do I get cached image stored by AFNetworking's UIImageView category? - there comes requirement when you needs to look after for an image inside your app's cache area.
I am using AFNetworking to get a JSON response. I am getting is as a PhotoPXArray (model I created using mantle). The log output is exactly the data I want. My problem is using the data. How do I go about saving the response data as a variable that can be used elsewhere in my program.
Also, I am using Sculptor to help with serializing.
-(NSArray*) getPhotoForWord:(NSString*)word {
NSArray *results = nil;
NSString *requestString = BASE_URL;
requestString = [requestString stringByAppendingString:#"photos/search?term="];
requestString = [requestString stringByAppendingString:word];
requestString = [requestString stringByAppendingString:CONSUMER_KEY];
NSString *encoded = [requestString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.responseSerializer = [SCLMantleResponseSerializer serializerForModelClass:PhotoPXArray.class];
[manager GET:encoded
parameters:nil
//success:^(AFHTTPRequestOperation *operation, id responseObject) {
success:^(AFHTTPRequestOperation *operation, PhotoPXArray *responseObject) {
NSLog(#"JSON: %#", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
}];
return results;
}
#end
Read the Apple documentation regarding blocks and variables. Or you can view this question on SO that will probably also answer your question.
From the Apple docs:
__block variables live in storage that is shared between the lexical scope of the variable and all blocks and block copies declared or
created within the variable’s lexical scope. Thus, the storage will
survive the destruction of the stack frame if any copies of the blocks
declared within the frame survive beyond the end of the frame (for
example, by being enqueued somewhere for later execution). Multiple
blocks in a given lexical scope can simultaneously use a shared
variable.
Use a completion block to get your data out:
- (void)getPhotoForWord:(NSString *)word completionHandler:(void ^(PhotoPXArray *photoArray))completionHandler
{
NSString *requestString = BASE_URL;
requestString = [requestString stringByAppendingString:#"photos/search?term="];
requestString = [requestString stringByAppendingString:word];
requestString = [requestString stringByAppendingString:CONSUMER_KEY];
NSString *encoded = [requestString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.responseSerializer = [SCLMantleResponseSerializer serializerForModelClass:PhotoPXArray.class];
[manager GET:encoded
parameters:nil
success:^(AFHTTPRequestOperation *operation, PhotoPXArray *responseObject) {
NSLog(#"JSON: %#", responseObject);
if (completionHandler) {
completionHandler(responseObject);
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
}];
}
Then call it like this:
[object getPhotoForWord:#"word" completionHandler:^(PhotoPXArray *photoArray) {
// Do something with photo array.
}];
Note that this call is asynchronous and will complete at some unknown time in the future. Also, you should likely take an NSError argument in the completion block so you can see if you get an error from the request, but I'll leave that to you.
I m trying to upload image through AFNetworking.
Following is the way I try to save image in an array. Image uploading starts, but right after the 1.1% of upload it stops uploading without any error. No Idea what is happening.
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
[picker dismissViewControllerAnimated:YES completion:nil];
UIImage *chosenImage = info[UIImagePickerControllerOriginalImage];
NSData *imageData=UIImagePNGRepresentation(chosenImage);
ImageObject *imageObject=[[ImageObject alloc]init];
imageObject.image=chosenImage;
imageObject.imageData=imageData;
imageObject.imageUploadStatus=FALSE;
imageObject.isUploaded=FALSE;
[imageObject setDescription:#""];
[imageDataArray addObject:imageObject];
}
After this I upload image with Following method.
-(void)uploadPicturesAndVides:(NSMutableArray *)_list descriptions:(NSMutableArray *)_description categoryID:(NSString *)_catID categoryName:(NSString *)_categoryName index:(NSInteger)_index{
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.requestSerializer = [AFHTTPRequestSerializer serializer];
manager.responseSerializer = [AFJSONResponseSerializer serializer];
[manager.requestSerializer setValue:[SettingValues getRSFToken] forHTTPHeaderField:#"_csrf"];
[manager.requestSerializer setValue:#"USER_Agent_Value" forHTTPHeaderField:#"User-Agent"];
NSString *imageUrl;
imageUrl=[NSString stringWithFormat:#"%#/user/upload/photo",BASE_SERVER_ADDRESS];
NSMutableArray *tempArray=[[NSMutableArray alloc] init];
for (ImageObject *object in _list) {
[tempArray addObject:[object description]];
}
NSString *descriptions;
descriptions=[tempArray componentsJoinedByString:#","];
NSDictionary *parameters = #{#"descriptionImage":descriptions,#"subcategoryId":_catID,#"subcategoryName":_categoryName,#"_csrf": [SettingValues getRSFToken]};
AFHTTPRequestOperation *op = [manager POST:imageUrl parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
NSInteger count=_index;
for (ImageObject *object in _list) {
NSString *imageName = [NSString stringWithFormat:#"IMG00%zd.png",count];
[formData appendPartWithFileData:object.imageData name:#"files" fileName:imageName mimeType:#"image/png"];
}
} success:^(AFHTTPRequestOperation *operation, id responseObject) {
[SettingValues setImageUploadStatus:TRUE];
[self uploadingRequestSuccessfulWithObject:responseObject reqestName:#"picture" index:_index];
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
}];
[op setUploadProgressBlock:^(NSUInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite) {
double percentDone = (double)totalBytesWritten / (double)totalBytesExpectedToWrite;
[self goBackTouploadingControllerWithProgressResult:percentDone index:_index];
}];
cancelManager=op;
[op start];
}
Following is the image and its progress stays here! no success no failure. :(
Problem is that code works when I upload image through Camera Roll, But when I capture image, it did not.
I put a NSLog(#"progress updated(percentDone) : %f", percentDone); in Progress Block and I found the following logs
2015-02-07 13:07:22.854 APP_Name[2069:60b] progress updated(percentDone) : 0.002105
2015-02-07 13:07:22.858 APP_Name[2069:60b] progress updated(percentDone) : 0.004210
2015-02-07 13:07:22.860 APP_Name[2069:60b] progress updated(percentDone) : 0.006315
2015-02-07 13:07:22.861 APP_Name[2069:60b] progress updated(percentDone) : 0.008413
and then every thing stops.
In Failure block I put following log
NSLog(#"Error: %# ***** %#", operation.responseString, error);
Never executed :(
I'm new in iOS programming. So I've newbie question. I'm getting started with AFNetworking 2 and that is the task:
I've a request. Its response is the part of the second request. It means that I have to wait untill first request ends. They follow step-by-step. When I get the second response I parse it and save 20 URLs in format http://lalala-xx.jpg. After that I want to load images and put them into UICollectionView, and I want to do it not all in scope but in scheme "downloaded->straight to cell". I save URLs and images in singleton class and get access to them just like
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
CustomCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:#"cell" forIndexPath:indexPath];
cell.imageView.image = [[UserData sharedUser].images objectAtIndex:indexPath.row];
return cell;
}
The chain of methos looks like
- (void)method1
{
NSString *string = [NSString stringWithFormat:firstRequestString];
NSURL *url = [NSURL URLWithString:string];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
operation.responseSerializer = [AFJSONResponseSerializer serializer];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject)
{
// getting needed part for second request
[self method2:(NSString *)part1];
}
failure:^(AFHTTPRequestOperation *operation, NSError *error)
{
// show error
}];
[operation start];
}
Second method:
- (void)method2:(NSString *)part1
{
// lalala making secondRequestString
NSString *string = [NSString stringWithFormat:secondRequestString];
NSURL *url = [NSURL URLWithString:string];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
operation.responseSerializer = [AFJSONResponseSerializer serializer];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject)
{
NSMutableArray *imageURLs = [[NSMutableArray alloc] init];
// getting needed URLs
[self loadAllImages:(NSMutableArray *)imageURLs];
}
failure:^(AFHTTPRequestOperation *operation, NSError *error)
{
// show error
}];
[operation start];
}
Last:
- (void)loadAllImages:(NSMutableArray *)imageURLs
{
// ???
}
I'm stuck. What should I do next? I have 20 URLs, but how should I download images and direct them to ViewController to update image in cells?
I suppouse AFNetworkig can provide me some operation queue.
And I dont like my code now. I use this chain, but I want an independent method2 returning imgURLs. So it should look:
User presses button -> method1 -> method2 -> stop. Wait untill user presses button -> download image1 -> show image1 -> download image2 -> show image2 -> and so on -> download imageN -> show imageN -> stop. I'll repeat, I need to store images in Array, I'll use it after that.
Thx u read that.
///////////////////////////////////// UPDATE /////////////////////////////////////
I found solution. But it does not satisfy me completely. Images come randomly. How to make them load in order?
- (void)loadAllImages:(NSMutableArray *)imageURLs
{
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
for (NSURL *url in imageURLs)
{
NSURLRequest *request = [NSURLRequest requestWithURL:url];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
operation.responseSerializer = [AFImageResponseSerializer serializer];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject)
{
[[UserData sharedUser].images addObject:responseObject];
[[NSNotificationCenter defaultCenter] postNotificationName:#"CollectionViewRealoadData" object:nil];
}
failure:^(AFHTTPRequestOperation *operation, NSError *error)
{
// show error
}];
[manager.operationQueue addOperation:operation];
}
}
You need to get the data from the URLs and then create a UIImage object from that data.
You can get the data from the URL using the NSURL methods
for(NSString *imgString in imageURLs){
NSURL *url = [NSURL URLWithString:imgString];
NSData *imgData = [NSData dataWithContentsOfURL:url];
UIImage *img = [UIImage imageWithData:imgData ];
[imageUrls addObject:img];//this mutable array should be initialized early in view controller life cycle (like ViewDidLoad).
}
Once you have your image object you can add it to your array of images that you are using as a datasource for your collection view.
[_collectionView insertItemsAtIndexPaths:#[[NSIndexPath indexPathForItem:[imageUrls count] - 1 inSection:0]]];
//reload your collection view once you add new data
I'm trying to make a get request to a restful service. This request has worked for the last 3 weeks when I was using a request without a request manager. As soon as I added a request manager because I wanted to send a dictionary of parameters, the code keeps crashing with the error:
'NSInternalInconsistencyException', reason: 'Invalid parameter not satisfying: urlRequest'
My code is as follows. The commented out code still works if I uncomment it and replace the new code with it. Why am I able to make a request from that URL but not with AFNetworking?
NSString *URLForSend = [NSString stringWithFormat:#"%#%#/", ([_remoteDownloadURLString stringByAppendingString:_getFilesJsonURLString]),_userName ];
NSURL *URL = [NSURL URLWithString:URLForSend];
NSURLRequest *request = [NSURLRequest requestWithURL:URL];
self.downloadJsonRequest = [[AFHTTPRequestOperation alloc] initWithRequest:request];//this works to create a a afhttprequestoperation, with the same url
_downloadJsonRequest.responseSerializer =
[AFJSONResponseSerializer serializerWithReadingOptions: NSJSONReadingMutableContainers];
__unsafe_unretained typeof(self) weakSelf = self;
NSMutableDictionary *mutDictForSend = [[NSMutableDictionary alloc] initWithDictionary:[[NSUserDefaults standardUserDefaults] objectForKey:#"tokenInfo"]];
[mutDictForSend removeObjectForKey:#"success"];
AFHTTPRequestOperationManager *manager = [[AFHTTPRequestOperationManager alloc] init];
[manager GET:URLForSend parameters:mutDictForSend success:^(AFHTTPRequestOperation *operation, id responseObject)
{
NSLog(#"%#", responseObject);
weakSelf.jsonArrayForCaching = responseObject;
[[NSNotificationCenter defaultCenter] postNotificationName:kBIDContentEndingSync object:weakSelf];
[weakSelf gotNewJson:responseObject];
}
failure:^(AFHTTPRequestOperation *operation, NSError *error)
{
NSLog(#"Request Failure Because %#",[error userInfo]);
}];
/*
[_downloadJsonRequest setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject)
{
NSLog(#"%#", responseObject);
weakSelf.jsonArrayForCaching = responseObject;
[[NSNotificationCenter defaultCenter] postNotificationName:kBIDContentEndingSync object:weakSelf];
[weakSelf gotNewJson:responseObject];
} failure:^(AFHTTPRequestOperation *operation, NSError *error)
{
NSLog(#"Request Failure Because %#",[error userInfo]);
}];
[[NSNotificationCenter defaultCenter] postNotificationName:kBIDContentStartingSync object:self];
[_downloadJsonRequest start];
*/
I'd suggest replacing the line:
AFHTTPRequestOperationManager *manager = [[AFHTTPRequestOperationManager alloc] init];
With
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
The latter calls initWithBaseURL, which does some configuration of the AFHTTPRequestOperationManager, that just calling [[AFHTTPRequestOperationManager alloc] init] does not appear to do.
If you're still having issues even doing that, I'd suggest adding Exception Breakpoint to identify precisely where this exception is taking place.
OK, this was a tough one, but it turns out that requestOperationManager is a singleton so I should not have initialised him, but call its instance...