I have following code, it works fine in iOS7, but does not in iOS8.In iOS8, the app always use the cache even I have set NSURLRequestReloadIgnoringCacheData:
NSURL *url = [NSURL URLWithString:k_Chapter_URL];
NSMutableURLRequest* request = [[NSMutableURLRequest alloc] initWithURL:url];
NSURLSessionConfiguration *sessionConfig =
[NSURLSessionConfiguration defaultSessionConfiguration];
sessionConfig.requestCachePolicy = NSURLRequestReloadIgnoringCacheData;
NSURLSession *session = [NSURLSession sessionWithConfiguration:sessionConfig];
[[session dataTaskWithRequest:request
completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
}] resume];
Is there anybody have similar situation with me?
I think this is a bug in iOS 8. I was able to use resetWithCompletionHandler to force the cache to clear.
[session resetWithCompletionHandler:^{
[[session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
}] resume];
}];
Related
I'm trying to update my code from NSUrlConnection to NSUrlSession. The app is running fine, no errors, but the token is never uploaded to the MySQL database... I've really no idea? Should I implement delegates or am I doing something basic stuff very wrong here? :-)
NSString *deviceToken = [[NSUserDefaults standardUserDefaults] objectForKey:#"deviceToken"];
//Information is only uploaded to SQLite database if 'deviceToken' is not null
if ([deviceToken length] > 0) {
NSURL *url = [NSURL URLWithString:#"http://sampleUrl.com/do.php"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];
NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
NSString *varString = [NSString stringWithFormat:#"deviceToken=%#", deviceToken];
NSData *requestData = [varString dataUsingEncoding:NSUTF8StringEncoding];
[request setHTTPMethod:#"POST"];
[request setValue:#"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8" forHTTPHeaderField:#"Accept"];
[request setValue:#"application/x-www-form-urlencoded" forHTTPHeaderField:#"Content-Type"];
[request setValue:[NSString stringWithFormat:#"%lu", (unsigned long)[requestData length]] forHTTPHeaderField:#"Content-Length"];
[request setHTTPBody: requestData];
NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];
NSURLSession *session = [NSURLSession sessionWithConfiguration:config];
/*NSURLSessionUploadTask *uploadTask = [session uploadTaskWithRequest:request fromData:requestData completionHandler:^(NSData *data,NSURLResponse *response,NSError *error) {
//Handle
}];*/
//NSURLSessionUploadTask *uploadTask2 = [session uploadTaskWithStreamedRequest:request];
NSURLSessionDataTask *dataTask = [session dataTaskWithRequest:request completionHandler:^(NSData *data,NSURLResponse *response,NSError *error) {
//Handle
}];
[dataTask resume];
Any ideas?
Thanks and regards,
Tom
I solved the problem:
NSString *deviceToken = [[NSUserDefaults standardUserDefaults] objectForKey:#"deviceToken"];
//Information is only uploaded to SQLite database if 'deviceToken' is not null
if ([deviceToken length] > 0) {
// Create URL and URLRequest
NSURL *url = [NSURL URLWithString:#"http://url.com/something.php"];
NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
//Create the body
NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
NSString *varString = [NSString stringWithFormat:#"deviceToken=%#", deviceToken"]];
// Create POST parameters and add it to HTTPBody
[request setHTTPMethod:#"POST"];
[request setHTTPBody: [varString dataUsingEncoding:NSUTF8StringEncoding]];
// Set up a simple and asynchronous NSURLSession to send data to the php
// Set up the session configuration and header data
NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];
[config setRequestCachePolicy:NSURLRequestUseProtocolCachePolicy];
[config setHTTPAdditionalHeaders:#{
#"Accept" : #"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
#"Content-Type" : #"application/x-www-form-urlencoded",
#"Content-Length" : [NSString stringWithFormat:#"%lu", (unsigned long)[[varString dataUsingEncoding:NSUTF8StringEncoding] length]]
}];
// Create the session and the task
NSURLSession *session = [NSURLSession sessionWithConfiguration:config];
NSURLSessionDataTask *task = [session dataTaskWithRequest:request completionHandler:^(NSData *data,NSURLResponse *response,NSError *error) {
if (error)
NSLog(#"Connection failed! Error - %# %#",
[error localizedDescription],
[[error userInfo] objectForKey:NSURLErrorFailingURLStringErrorKey]);
if (response)
{
NSLog(#"response description: %#", response.description);
[prefs setBool:YES forKey:#"tokenSent"];
}
if (data)
NSLog(#"data description: %#", data.description);
}];
// Start the task
[task resume];
}
Regards,
Tom
I'm trying to fetch a json from google places with the following code:
NSString *query = [NSString stringWithFormat:#"https://maps.googleapis.com/maps/api/place/search/json?location=%f,%f&radius=%i&types=%#&sensor=true&key=%#", center.latitude, center.longitude, rad, types, kGOOGLE_API_KEY];
NSLog(#"%#",query);
NSURL *googleRequestURL=[NSURL URLWithString:query];
[NSURLConnection sendAsynchronousRequest:[[NSURLRequest alloc] initWithURL:googleRequestURL] queue:[[NSOperationQueue alloc] init] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
if (error) {
NSLog(#"Error fetching data: %#",[error description]);
} else {
//To-do
}
}];
The resulting url is: https://maps.googleapis.com/maps/api/place/search/json?location=37.337566,-122.041202&radius=1000&types=accounting|bowling_alley|doctor&sensor=true&key=MY_KEY
(my key is ommitted for obsious reasons)
Which works fine from my laptop's browser, but return the error:
Error Domain=NSURLErrorDomain Code=-1002 "unsupported URL" UserInfo=0x7fe47bc138f0 {NSLocalizedDescription=unsupported URL, NSUnderlyingError=0x7fe47be9dbe0 "unsupported URL"}
I tried using http instead of https (in the browser it returns a json with some error message, but still returns something) with no success.
What am I doing wrong?
This is how I got it resolved. Good Luck!
NSString *google = #"https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=%f,%f&radius=500&types=%#&key=%#";
NSString *link = [NSString stringWithFormat:google, coordinate.latitude, coordinate.longitude, types, GOOGLE_KEY];
NSURL *url = [NSURL URLWithString:[link stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
NSMutableURLRequest *request =[NSMutableURLRequest requestWithURL:url];
I have written a REST service that serves up some data. It is passcode protected.
I am trying to write a background process that will grab the data and stuff it into a sqlLite db I have in the app.
I did this initially without authentication using :
- (void) callWebService {
dispatch_sync(kBgQueue, ^{
NSData* data = [NSData dataWithContentsOfURL:
scoularDirectoryURL];
[self performSelectorOnMainThread:#selector(fetchedData:) withObject:data waitUntilDone:YES];
});
}
This worked fine but I don't think I can add authentication to that. If I can I would just use that.
What I am looking for is a nice, simple explanation of NSURLSession using user/password authentication.
I think your question is vague and underspecified. That said, here's one solution, from here:
-(void)URLSession:(NSURLSession *)session didReceiveChallenge:(NSURLAuthenticationChallenge *)challenge completionHandler:(void (^)( NSURLSessionAuthChallengeDisposition disposition, NSURLCredential *credential))completionHandler
{
if (_sessionFailureCount == 0) {
NSURLCredential *cred = [NSURLCredential credentialWithUser:self.userName password:self.password persistence:NSURLCredentialPersistenceNone];
completionHandler(NSURLSessionAuthChallengeUseCredential, cred);
} else {
completionHandler(NSURLSessionAuthChallengeCancelAuthenticationChallenge, nil);
}
_sessionFailureCount++;
}
I strongly recommend that you read and re-read the Apple docs on this.
For me the following code works:
NSString *userName=#"user:";
NSString *userPassword=#"password";
NSString *authStr= [userName stringByAppendingString:userPassword];
NSString *url=#"http://000.00.0.0:0000/service.json";
NSData *authData = [authStr dataUsingEncoding:NSUTF8StringEncoding];
NSString *authValue = [NSString stringWithFormat: #"Basic %#",[authData base64EncodedStringWithOptions:0]];
NSMutableURLRequest* request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:url]];
[request setValue:authValue forHTTPHeaderField:#"Authorization"];
[NSURLConnection sendAsynchronousRequest:request
queue:[NSOperationQueue mainQueue]
completionHandler:^(NSURLResponse *response,
NSData *data, NSError *connectionError)
NSDictionary *theDictionary = [NSJSONSerialization JSONObjectWithData:data
options:0
error:NULL];
NSDictionary *host = [theDictionary objectForKey : #"host"];
// json nested
self.label.text = [host objectForKey:#"key1"];
self.label.text = [host objectForKey:#"key2"];
regards
After trying I was able to upload an image taken from the camera to my webserver.
But what I do no understand is why the image quality is crappy, low resolution, very few colors. Is there a way to get a better quality ?
here is my code :
NSURL *url = [NSURL URLWithString:#"http://localhost"];
AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url];
NSData *imageData = UIImageJPEGRepresentation(image, 0.9);
NSMutableURLRequest *request = [httpClient multipartFormRequestWithMethod:#"POST" path:#"/upload.php" parameters:nil constructingBodyWithBlock: ^(id <AFMultipartFormData>formData) {
[formData appendPartWithFileData:imageData name:#"file" fileName:#"temp.jpeg" mimeType:#"image/jpeg"];
}];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
[operation setUploadProgressBlock:^(NSUInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite) {
NSLog(#"Sent %lld of %lld bytes", totalBytesWritten, totalBytesExpectedToWrite);
}];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject)
{
NSString *response = [operation responseString];
NSLog(#"response: [%#]",response);
//[MBProgressHUD hideHUDForView:self.view animated:YES];
}
failure:^(AFHTTPRequestOperation *operation, NSError *error)
{
//[MBProgressHUD hideHUDForView:self.view animated:YES];
if([operation.response statusCode] == 403)
{
NSLog(#"Upload Failed");
return;
}
NSLog(#"error: %#", [operation error]);
}];
[operation start];
thanks Regis
Sorry guys in order to work on my webserver I use realVnc. The set up of RealVnc was set to low resolution !!! I did change setup to have a better resolution and now the problem is solved!
In my current xcode project, I need to send parameter values to a url and need to retrieve an xml file based on the parameter values sent.
I tried the below code but it's not working:
(IBAction)myButtonClick:(id)sender
{
NSURL *oRequestURL =
[NSURL URLWithString:#"http://xyz .com/air/1.0/search?from=MAA&to=CJB&depart-date=2012-06-30&adults=2&children=2&infants=1&way=one&cabin-type=Economy&sort=asc"];
NSMutableURLRequest *oRequest = [[[NSMutableURLRequest alloc]init]autorelease];
[oRequest setHTTPMethod:#"POST"];
[oRequest setURL: oRequestURL];
NSMutableData *oHttpBody = [NSMutableData data];
[oHttpBody appendData:[#"This is HTTP Request body" dataUsingEncoding:NSUTF8StringEncoding]];
[oRequest setValue:[oHttpBody length] forHTTPHeaderField:#"Content-Length"];
NSError *oError = [[NSError alloc]init];
NSHTTPURLResponse *oResponseCode = nil;
NSData *oResponseData = [NSURLConnection sendSynchronousRequest:oRequest returningResponse:oResponseCode error:oError];
if ([oResponseCode statusCode]> 200) {
NSLog(#"Status code is greater than 200");
}
NSString *strResult=[[NSString alloc]initWithData:oResponseData encoding:NSUTF8StringEncoding];
NSLog(#"The result is %s",strResult);
}
I have searched many sites and books but could not find a solution.
Would be of great help if a link to a tutorial or some other useful resource can be provided. Appreciate your great help.
Thank You.
Hi,
I have found the solution. The code is as below. Hope it helps someone else:)
- (IBAction)myButtonPressed:(id)sender
{
NSString *urlAsString = #"http://api.abc.com/air/1.0/search?from=MAA&to=CJB&depart-date=2012-09-30&adults=2&children=2&infants=1&way=one&cabin-type=Economy&sort=asc";
NSURL *url = [NSURL URLWithString:urlAsString];
NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:url];
[urlRequest setValue:#"2193141de2g7e2a34bb19bc3aa52b3b5" forHTTPHeaderField:#"X-XX-API-KEY"];
[urlRequest setTimeoutInterval:30.0f];
[urlRequest setHTTPMethod:#"GET"];
NSOperationQueue *queue = [[NSOperationQueue alloc]init];
[NSURLConnection
sendAsynchronousRequest:urlRequest queue:queue completionHandler:^(NSURLResponse *response, NSData *data, NSError *error)
{
if ([data length]>0 &&
error == nil)
{
NSString *html = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];
NSLog(#"HTML = %#", html);
}
else if ([data length]== 0 && error==nil) {
NSLog(#"Nothing was downloaded");
}
else if (error!= nil) {
NSLog(#"Error occured = %#", error);
}
}];
}