Search Results

Search found 477 results on 20 pages for 'nsdata'.

Page 2/20 | < Previous Page | 1 2 3 4 5 6 7 8 9 10 11 12  | Next Page >

• Play video in UIWebView from NSData

  - by Papagalli

  Hello there, Does anybody know how to play a video in a UIVebView ? The video comes from the iphone library, when I pick it, I store it in core data as binary data. If i use the local url of the video it's working fine, the problem I have is that the this url refers to a folder named "tmp", and I don't know the lifetime of it. If I can get the real url of the video file it will be ok. //attachment is the core data object containing the data NSURL *url = [NSURL URLWithString:attachment.path]; [self.webView loadRequest:[NSURLRequest requestWithURL:url]]; I tried a solution that doesn't work: (i tried MIMETypes : "video/quicktime" and "video/mp4") [self.webView loadData:attachment.data MIMEType:@"video/mov" textEncodingName:nil baseURL:nil]; I think the second solution is the closest, and the problem comes from the MIMEType. Thanks by advance if anybody has a solution for this :)

  Read the article

• NSData to NSString by changing the value null is returned. I need you help

  - by kevin

  *cipher.h, cipher.m all code : http://watchitlater.com/blog/2010/02/java-and-iphone-aes-interoperability Cipher.m -(NSData *)encrypt:(NSData *)plainText{ return [self transform:KCCEncrypt data:plainText; } step1. Cipher *cipher = [[Cipher alloc]initWithKey:@"1234567890"]; NSData *input = [@"kevin" dataUsingEncoding:NSUTF8StringEncoding]; NSData *data = [cipher encrypt:input]; data variables NSLog print : <4d1c4d7f 1592718c fd588cec 84053e35 step2. NSString *changeVal = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; data variables NSLog print : null NSData to NSString by changing the value null is returned. By converting NSString NSURLConnection want to transfer. I need you help

  Read the article

• iOS Development: How can I encapsulate a string in an NSData object?

  - by BeachRunnerJoe

  Hello. I'm building a multiplayer game on the iPhone and I need to send string data to the other players in the game. To do that, I need to encapsulate my NSString* string data in an NSData object somehow. Here's an example of how my code is structured... typedef struct { PACKETTYPE packetType; ??? stringToSend; //<---not sure how to store this } StringPacket; StringPacket msg; msg.packetType = STRING_PACKET; msg.stringToSend = ... // <---not sure what to do here NSData *packet = [NSData dataWithBytes:&msg length:sizeof(StringPacket)]; So my question is, if StringPacket is a struct defined in my header, what type should the stringToSend property be so that I can easily call the dataWithBytes method of NSData to encapsulate the packet data in an NSData object? Thanks for your wisdom!

  Read the article

• AES encrypted value, the conversion happens NSString value to NSData?

  - by kevin

  cipher.h cipher.m are developing a module has. NSData value of the encrypted value problem as follows. : <0b21kck 0v35919 sk2910 As the purpose of encryption is to be sent to NSURLConnection String value. NSString value to NSData encrypted so I think it must be converted to What can you do?

  Read the article

• iPhone: How to Embed NSData in XML for Upload to Server?

  - by milanjansari

  Hello, I want to pass data to a server and store the file there in a database as binary data. NSData *myData = [NSData dataWithContentsOfFile:pathDoc]; pathDoc = [NSString stringWithFormat:@"<size>%d</size><type>%d</type><cdate>%@</cdate><file>%c</file><fname>File</fname>",fileSizeVal,filetype,creationDate,myData]; Any idea about this? Thanks you, Milan

  Read the article

• Cocoa & Cocoa Touch. How do I create an NSData object from a plain ole pointer?

  - by dugla

  I have malloc'd a whole mess of data in an NSOperation instance. I have a pointer: data = malloc(humungous_amounts_of_god_knows_what); uint8_t* data; How do I package this up as an NSData instance and return it to the main thread? I am assuming that after conversion to an NSData instance I can simply call: free(data); Yes? Also, back on the main thread how do I retrieve the pointer? Thanks, Doug

  Read the article

• How do I upload an NSImage(NSData)to Twitpic with OAMutableURLRequest?

  - by timothy5216

  I'm using OAConsumer in my xAuth twitterEngine and i'm adding Twitpic OAuth Echo to it. But it won't POST the NSData. here is some of my code: //other file NSArray *reps = [[imageToUpload image] representations]; NSData *imageData = [NSBitmapImageRep representationOfImageRepsInArray:reps usingType:NSJPEGFileType properties:nil]; [twitter testUploadImageData:imageData withMessage:@"Hello WORLD!!" toURL:[NSURL URLWithString:uploadURL.stringValue]]; // - (void)testUploadImageData:(NSData *)data withMessage:(NSString *)message toURL:(NSURL *)url; { //url = @"http://api.twitpic.com/2/upload.xml" //message = @"Hello WORLD!!" NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; NSString *String = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding]; NSLog(@"dataString: %@",String); OAMutableURLRequest *request = [[OAMutableURLRequest alloc] initWithURL:url consumer:self.consumer token:_accessToken realm:nil signatureProvider:nil]; // Setup POST body [request setHTTPMethod:@"POST"]; //NSString *stringBoundary = [NSString stringWithString:@"0xKhTmLbOuNdArY"]; //NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@", stringBoundary]; // NSString *stringBoundarySeparator = [NSString stringWithFormat:@"\r\n--%@\r\n", stringBoundary]; /* NSMutableString *postString = [NSMutableString string]; [postString appendString:@"\r\n"]; [postString appendString:stringBoundarySeparator]; [postString appendString:[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"message\"\r\n\r\n%@", message]]; [postString appendString:stringBoundarySeparator]; [postString appendString:[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"media\"; filename=\"%@\"\r\n", @"file.jpg"]]; [postString appendString:@"Content-Type: image/jpg\r\n"]; [postString appendString:@"Content-Transfer-Encoding: binary\r\n\r\n"]; // Setting up the POST request's multipart/form-data body NSMutableData *postBody = [NSMutableData data]; [postBody appendData:[postString dataUsingEncoding:NSUTF8StringEncoding]]; [postBody appendData:data]; [request setHTTPBody:postBody]; */ [request setHTTPMethod:@"POST"]; NSString *thing = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding]; NSLog(@"%@",thing); [request setParameters:[NSArray arrayWithObjects: [OARequestParameter requestParameterWithName:@"oauth_token" value:_accessToken.key], [OARequestParameter requestParameterWithName:@"X-Auth-Service-Provider" value:@"https://api.twitter.com/1/account/verify_credentials.json"], [OARequestParameter requestParameterWithName:@"key" value:@"my-key-here :P"], [OARequestParameter requestParameterWithName:@"message" value:message], //iv'e changed this many times. I was just trying this to see if it works [OARequestParameter requestParameterWithName:@"media" value:thing], nil]]; OAAsynchronousDataFetcher *dataFetcher = [[OAAsynchronousDataFetcher alloc] init]; [dataFetcher initWithRequest:request delegate:self didFinishSelector:@selector(uploadDidUpload:withData:) didFailSelector:@selector(uploadDidFail:withData:)]; [dataFetcher start]; [dataFetcher release]; [request release]; [pool drain]; } I'm authenticated but it still won't POST the data :(

  Read the article

• How to pull UIImages from NSData from a socket.

  - by Jus' Wondrin'

  Hey all! I'm using ASyncSocket to move some UIImages from one device over to another. Essentially, on one device I have: NSMutableData *data = UIImageJPEGRepresentation(image, 0.1); if(isRunning){ [sock writeData:data withTimeout:-1 tag:0]; } So a new image will be added to the socket every so often (like a webcam). Then, on the other device, I am calling: [listenSocket readDataWithTimeout:1 tag:0]; which will respond with: - (void)onSocket:(AsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag { [responseData appendData:data]; [listenSocket readDataWithTimeout:1 tag:0]; } Essentially, what I want to be able to do is have an NSTimer going which will call @selector(PullImages): -(void) PullImages { In here, I want to be able to pull images out of ResponseData. How do I do that? There might not be a complete image yet, there might be multiple images, there might be one and a half images! I want to parse the NSData into each existing image! } Any assistance? Thanks in advance!

  Read the article

• NSSet to NSData, then back out again, for GameKit?

  - by Peter Hajas

  Hi guys, I'm trying to do some image edit syncing between two of the same app running on different iPhones. I would like to send an NSSet * from one device to another (which I imagine involves encapsulating in NSData) then decrypting this back to an NSSet, then using it in a touchesMoved type of function. Is this feasible, or should I work on syncing the UIImages instead? I worry that UIImage syncing would have too much latency for realtime interaction. Thanks for your help!

  Read the article

• NSData release is not reclaiming memory

  - by ctpenrose

  iPhoneOS 3.2 I use NSKeyedUnarchiver's unarchiveObjectWithFile: to load a custom object that contains a single large NSData and another much smaller object. The dealloc method in my custom object gets called, the NSData object is released, its retainCount == 1 just before. Physical memory does not decrement by any amount, let alone a fraction of the NSData size, and with repetition memory warnings are reliably generated: I have test until I actually received level 2 warnings. =( NSString *archivePath = [[[NSBundle mainBundle] pathForResource:@"lingering"] ofType:@"data"] retain]; lingeringDataContainer = [[NSKeyedUnarchiver unarchiveObjectWithFile:archivePath] retain]; [archivePath release]; [lingeringDataContainer release]; and now the dealloc.... - (void) dealloc { [releasingObject release]; [lingeringData release]; [super dealloc]; } Before release: (gdb) p (int) [(NSData *) lingeringData retainCount] $1 = 1 After: (gdb) p (int) [(NSData *) lingeringData retainCount] Target does not respond to this message selector.

  Read the article

• UIImage Object surprisingly returning null but not NSData

  - by riyaz

  i have created a sqlite db. and i have insert a few datas in my db.. UIImage * imagee=[UIImage imageNamed:@"image.png"]; NSData *mydata=[NSData dataWithData:UIImagePNGRepresentation(imagee)]; const char *dbpath = [databasePath UTF8String]; NSString *insertSQL=[NSString stringWithFormat:@"insert into CONTACTS values(\"%@\",\"%@\")",@"Mathan",mydata]; NSLog(@"mydata %@",mydata); sqlite3_stmt *addStatement; const char *insert_stmt=[insertSQL UTF8String]; if (sqlite3_open(dbpath,&contactDB)==SQLITE_OK) { sqlite3_prepare_v2(contactDB,insert_stmt,-1,&addStatement,NULL); if (sqlite3_step(addStatement)==SQLITE_DONE) { sqlite3_bind_blob(addStatement,1, [mydata bytes], [mydata length], SQLITE_TRANSIENT); NSLog(@"Data saved"); } else{ NSLog(@"Some Error occured"); } sqlite3_close(contactDB); } else{ NSLog(@"Failure"); } have written some codes to retrive the data sqlite3_stmt *statement; if (sqlite3_open([databasePath UTF8String], &contactDB) == SQLITE_OK) { NSString *sql = [NSString stringWithFormat:@"SELECT * FROM contacts"]; if (sqlite3_prepare_v2( contactDB, [sql UTF8String], -1, &statement, nil) == SQLITE_OK) { while (sqlite3_step(statement) == SQLITE_ROW) { char *field1 = (char *) sqlite3_column_text(statement, 0); NSString *field1Str = [[NSString alloc] initWithUTF8String: field1]; NSLog(@"UserName %@",field1Str); NSData *data = [[NSData alloc] initWithBytes:sqlite3_column_blob(statement, 1) length:sqlite3_column_bytes(statement, 1)]; UIImage *newImage = [[UIImage alloc]initWithData:data]; NSLog(@"Image OBJ %@",newImage); NSLog(@"Image Data %@",data); } sqlite3_close(contactDB); } } sqlite3_finalize(statement); the problem is in log, inserted NSData object and retrieved NSData Objects are different (printing in log gives different stream) moreover Image OBJ is printed null in log.. Have seen similar questions in stackoverflow. But nothing seems to help. Please give some suggestions to overcome this issue.

  Read the article

• How can Core Data store an NSData?

  - by mystify

  The documentation says, that core data properties can only store NSString, NSNumber and NSDate types. However, a lot of Core Data users claim Core Data could also store an NSData type. But I wasn't able to see that in the documentation, although the Xcode Data Modeler allows to choose a data type called "binary" (which seems to be NSData). Did I miss something? Is there a hidden place in the documentation that indeed lists NSData for binary stuff?

  Read the article

• passing nsdata in stringwithformat

  - by milanjansari

  hello, How to pass nsdata in below of the string NSData *myData = [NSData dataWithContentsOfFile:pathDoc]; pathDoc = [NSString stringWithFormat:@"<size>%d</size><type>%d</type><cdate>%@</cdate><file>%c</file><fname>File</fname>",fileSizeVal,filetype,creationDate,file]; Any idea about this? Thanks you, Milan

  Read the article

• Objective-c - How to serialize audio file into small packets that can be played?

  - by vfn

  Hi there, So, I would like to get a sound file and convert it in packets, and send it to another computer. I would like that the other computer be able to play the packets as they arrive. I am using AVAudioPlayer to try to play this packets, but I couldn't find a proper way to serialize the data on the peer1 that the peer2 can play. The scenario is, peer1 has a audio file, split the audio file in many small packets, put them on a NSData and send them to peer2. Peer 2 receive the packets and play one by one, as they arrive. Does anyone have know how to do this? or even if it is possible? EDIT: Here it is some piece of code to illustrate what I would like to achieve. // This code is part of the peer1, the one who sends the data - (void)sendData { int packetId = 0; NSString *soundFilePath = [[NSBundle mainBundle] pathForResource:@"myAudioFile" ofType:@"wav"]; NSData *soundData = [[NSData alloc] initWithContentsOfFile:soundFilePath]; NSMutableArray *arraySoundData = [[NSMutableArray alloc] init]; // Spliting the audio in 2 pieces // This is only an illustration // The idea is to split the data into multiple pieces // dependin on the size of the file to be sent NSRange soundRange; soundRange.length = [soundData length]/2; soundRange.location = 0; [arraySoundData addObject:[soundData subdataWithRange:soundRange]]; soundRange.length = [soundData length]/2; soundRange.location = [soundData length]/2; [arraySoundData addObject:[soundData subdataWithRange:soundRange]]; for (int i=0; i // This is the code on peer2 that would receive an play the piece of audio on each packet - (void) receiveData:(NSData *)data { NSKeyedUnarchiver* unarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData:data]; if ([unarchiver containsValueForKey:PACKET_ID]) NSLog(@"DECODED PACKET_ID: %i", [unarchiver decodeIntForKey:PACKET_ID]); if ([unarchiver containsValueForKey:PACKET_SOUND_DATA]) { NSLog(@"DECODED sound"); NSData *sound = (NSData *)[unarchiver decodeObjectForKey:PACKET_SOUND_DATA]; if (sound == nil) { NSLog(@"sound is nil!"); } else { NSLog(@"sound is not nil!"); AVAudioPlayer *audioPlayer = [AVAudioPlayer alloc]; if ([audioPlayer initWithData:sound error:nil]) { [audioPlayer prepareToPlay]; [audioPlayer play]; } else { [audioPlayer release]; NSLog(@"Player couldn't load data"); } } } [unarchiver release]; } So, here is what I am trying to achieve...so, what I really need to know is how to create the packets, so peer2 can play the audio. It would be a kind of streaming. Yes, for now I am not worried about the order that the packet are received or played...I only need to get the sound sliced and them be able to play each piece, each slice, without need to wait for the whole file be received by peer2. Thanks!

  Read the article

• Problem getting size of Website Xcode

  - by Michael Amici

  When i try and compile I come up with a warning that reads initialization makes pointer from integer without a cast. No clue why. I am just trying to get the size of a website. #import "Lockerz_RedemptionViewController.h" @implementation Lockerz_RedemptionViewController -(IBAction)startLoop:(id) sender { NSData *dataNew = [NSData dataWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:@"http://www.google.com/"]]]; NSUInteger *len = [dataNew length]; //error is here NSLog(@"%@", len); }

  Read the article

• Writing multiple NSData to File

  - by user326943

  I need a hint on how to write multiple NSData chunks to single file. Downloading a file using NSURLConnection in chunks. Each chunk is downloaded in a separate NSOperation thread. As the chunks finish downloading they need to be written to a file so combined result is the file downloaded. What would be the best way to manage the NSData that is returned and writing it to a single file?

  Read the article

• Data loss when downloading data from LDAP server

  - by Ricky D'Amelio

  Hi there. This question comes from a previous one I asked about handling NSData objects: http://stackoverflow.com/questions/2453785/converting-nsdata-to-an-nsstring-representation-is-failing. I have reached the point where I am taking an NSImage, turning it into NSData and uploading those data bytes to the LDAP server. I am doing this like so; //connected successfully to LDAP server above... struct berval photo_berval; struct berval *jpegPhoto_values[2]; photo_berval.bv_len = [photo length]; photo_berval.bv_val = [photo bytes]; jpegPhoto_values[0] = &photo_berval; jpegPhoto_values[1] = NULL; mod.mod_type = "jpegPhoto"; mod.mod_op = LDAP_MOD_REPLACE|LDAP_MOD_BVALUES; mod.mod_bvalues = jpegPhoto_values; mods[0] = &mod; mods[1] = NULL; //perform the modify operation rc = ldap_modify_ext_s(ld, givenModifyEntry, mods, NULL, NULL); That happens with no errors, and you can see a big blob of data when you're in the command line. My problem is, when I go to access the same data at a later stage, I am getting an image file back that's about 120 times smaller than the original image. //find the jpegPhoto attribute photoA = ldap_first_attribute(ld, photoE, &photoBer); while (strcasecmp(photoA, "jpegphoto") != 0) { photoA = ldap_next_attribute(ld, photoE, photoBer); } //get the value of the attribute if ((list_of_photos = ldap_get_values_len(ld, photoE, photoA)) != NULL) { //get the first JPEG photo_data = *list_of_photos[0]; selectedPictureData = [NSData dataWithBytes:&photo_data length:sizeof(photo_data)]; [selectedPictureData writeToFile:@"/Users/username/Desktop/Photo 2.jpg" atomically:YES]; NSLog (@"%@", selectedPictureData); Has anyone successfully done this before or can anyone see what I might be doing wrong? I appreciate anyone's help. Sorry to post so many questions! Ricky.

  Read the article

• Saving data - does work on Simulator, not on Device

  - by Peter Hajas

  I use NSData to persist an image in my application. I save the image like so (in my App Delegate): - (void)applicationWillTerminate:(UIApplication *)application { NSLog(@"Saving data"); NSData *data = UIImagePNGRepresentation([[viewController.myViewController myImage]image]); //Write the file out! NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *path_to_file = [documentsDirectory stringByAppendingString:@"lastimage.png"]; [data writeToFile:path_to_file atomically:YES]; NSLog(@"Data saved."); } and then I load it back like so (in my view controller, under viewDidLoad): NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *path_to_file = [documentsDirectory stringByAppendingString:@"lastimage.png"]; if([[NSFileManager defaultManager] fileExistsAtPath:path_to_file]) { NSLog(@"Found saved file, loading in image"); NSData *data = [NSData dataWithContentsOfFile:path_to_file]; UIImage *temp = [[UIImage alloc] initWithData:data]; myViewController.myImage.image = temp; NSLog(@"Finished loading in image"); } This code works every time on the simulator, but on the device, it can never seem to load back in the image. I'm pretty sure that it saves out, but I have no view of the filesystem. Am I doing something weird? Does the simulator have a different way to access its directories than the device? Thanks!

  Read the article

• NSData in CoreData is not saving properly

  - by abisson

  I am currently trying to store images I download from the web into an NSManagedObject class so that I don't have to redownload it every single time the application is opened. I currently have these two classes. Plant.h @property (nonatomic, retain) NSString * name; @property (nonatomic, retain) PlantPicture *picture; PlantPicture.h @property (nonatomic, retain) NSString * bucketName; @property (nonatomic, retain) NSString * creationDate; @property (nonatomic, retain) NSData * pictureData; @property (nonatomic, retain) NSString * slug; @property (nonatomic, retain) NSString * urlWithBucket; Now I do the following: - (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath { PlantCollectionCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:CellIdentifier forIndexPath:indexPath]; Plant *plant = [self.fetchedResultsController objectAtIndexPath:indexPath]; cell.plantLabel.text = plant.name; if(plant.picture.pictureData == nil) { NSLog(@"Downloading"); NSMutableString *pictureUrl = [[NSMutableString alloc]initWithString:amazonS3BaseURL]; [pictureUrl appendString:plant.picture.urlWithBucket]; NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:pictureUrl]]; AFImageRequestOperation *imageOperation = [AFImageRequestOperation imageRequestOperationWithRequest:request success:^(UIImage *image) { cell.plantImageView.image = image; plant.picture.pictureData = [[NSData alloc]initWithData:UIImageJPEGRepresentation(image, 1.0)]; NSError *error = nil; if (![_managedObjectContext save:&error]) { NSLog(@"Unresolved error %@, %@", error, [error userInfo]); } }]; [imageOperation start]; } else { NSLog(@"Already"); cell.plantImageView.image = [UIImage imageWithData:plant.picture.pictureData]; } NSLog(@"%@", plant.name); return cell; } The plant information is present, as well as the picture object. However, the NSData itself is NEVER saved throughout the application opening and closing. I always have to REDOWNLOAD the image! Any ideas!? [Very new to CoreData... sorry if it is easy!] thanks!

  Read the article

• Using NSURLRequest+NSURLConnection seems overkill for a webcall with no data return

  - by Spectravideo328

  All, This might seems very straightforward but I have already gone through the URL loading system program guide and the various NSURL.... classes and not found my answer. I am just trying to do a simple call from the app to a website to reserve a party spot: NSString *path=[NSString stringWithFormat:@"http://www.myparty123.com/ireservedURL.asp?Nickname=%@&Seat=%i&Email=%@&Currentparty=%i",john,5432,[email protected],6598]; NSURL* reservationURL =[NSURL URLWithString:path]; NSData *call= [NSData dataWithContentsOfURL:reservationURL]; This seemed to be the simple way but I get this warning that I am not using the "call" variable. And it seems overkill to do a call using NSData where there is no data return. Yet, creating an NSURLRequest and initiating an NSURLConnection and then implementing delegates with that request seems to be overkill as well. What am I missing. Thanks KMB

  Read the article

• Writing photos (and other things) to disk and getting them later in iphone

  - by ebabchick

  I'm trying to write an image to disk: NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsPath = [paths objectAtIndex:0]; NSString* savePath = [documentsPath stringByAppendingPathComponent:@"photo"]; BOOL result = [data writeToFile:savePath atomically:YES]; if(result) NSLog(@"Save of photo success!"); Then, later, I try to retrieve for a table view cell image: NSData* getPhoto = [NSData dataWithContentsOfFile:[leaf content]]; UIImage* myImage = [UIImage imageWithData:getPhoto]; cell.imageView.image = myImage; Yes, I checked to make sure the [leaf content] returns the same NSString as savePath. What else could be the problem? [NSData dataWithContentsOfFile:[leaf content]]; returns nil.... Thanks guys

  Read the article

• Serialize struct with pointers to NSData

  - by leolobato

  Hey guys, I need to add some kind of archiving functionality to a Objective-C Trie implementation (NDTrie on github), but I have very little experience with C and it's data structures. struct trieNode { NSUInteger key; NSUInteger count, size; id object; __strong struct trieNode ** children; __strong struct trieNode * parent; }; @interface NDTrie (Private) - (struct trieNode*)root; @end What I need is to create an NSData with the tree structure from that root - or serialize/deserialize the whole tree some other way (conforming to NSCoding?), but I have no clue how to work with NSData and a C struct containing pointers. Performance on deserializing the resulting object would be crucial, as this is an iPhone project and I will need to load it in the background every time the app starts. What would be the best way to achieve this? Thanks!

  Read the article

• NSString to NSData Failing in Encoding

  - by Travis

  I'm trying to use NSXmlParser to parse ISO-8859-1 data. Using Apple's own example for parsing ISO-8859-1, I have the following. NSString *xmlFilePath = [[NSBundle mainBundle] pathForResource:sampleFileName ofType:@"xml"]; NSString *xmlFileContents = [NSString stringWithContentsOfFile:xmlFilePath encoding:NSISOLatin1StringEncoding error:nil]; NSLog(@"contents: %@", xmlFileContents); I see that in the console, the contents of the string is accurate. However when I try to convert it to an NSData object (for use with the parser), I do the following. NSData *xmlData = [xmlFileContents dataUsingEncoding:NSISOLatin1StringEncoding]; But then when my didStartElement delegate gets called, I see  showing up which I think is from an encoding discrepancy. Can NSXmlParser handle ISO-8859-1 and if so, what am I doing wrong?

  Read the article

• to print local xml file through NSData?

  - by senthilmuthu

  hi, i want to take some xml data from local path,and to parse,but when i use following code NSLog returns(content) different texts which is differed from xml file, how can i get exact xml data to check ,it consists correct xml data or not? any help please? when i parse , it returns nothing..i have saved the file as .xml and copied to local resource folder? NSString *xmlFilePath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"samp.xml"]; NSString *xmlFileContents = [NSString stringWithContentsOfFile:xmlFilePath]; NSData *data = [NSData dataWithBytes:[xmlFileContents UTF8String] length:[xmlFileContents lengthOfBytesUsingEncoding: NSUTF8StringEncoding]]; NSString *content=[[NSString alloc] initWithBytes:[data bytes] length:[data length] encoding:NSUTF8StringEncoding]; NSLog(@"%@",content);

  Read the article

• [NSData dataWithContentsOfFile:path] doesn't work

  - by Felics

  Hello, when I have the fallowing code to read a binary file: NSString* file = [NSString stringWithUTF8String:fileName]; NSString* filePath = resource ? [[NSBundle mainBundle] pathForResource:file ofType:nil] : [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0] stringByAppendingPathComponent: file]; NSData* fileData = [NSData dataWithContentsOfFile:filePath]; Where "fileName" and resource are load function parameters. "resource" is used to know if the file is located in application bundle or in Documents. Sometimes this code works well and sometimes it doesn't. As far I saw this problem is random. I can run the code 10 times in a row and it works fine and after that it gives me nil data without any modification. Does anybody knows what could be the problem? Could it be related with file extension or file name? Thank you. PS: I use this code on iPhone Simulator and the file exists in application bundle.

  Read the article

< Previous Page | 1 2 3 4 5 6 7 8 9 10 11 12  | Next Page >