nsdocumentdirectory

问题 I am unable to save and retrieve image in iOS. I am getting nil image trough this code: -(NSString *)saveImageDataWithImage:(UIImage *)image { NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentationDirectory,NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *photoName = [NSString stringWithFormat:@"%ld.png", (long)[[NSDate date] timeIntervalSince1970]]; NSString *getImagePath = [documentsDirectory stringByAppendingPathComponent:photoName];

问题 I am trying to store images from webservice in documents directory.For a stored image I want to load it from documents directory in table view. The images are accessible from a url such as :- http://Address/App/User/Image/Puegeot_E7 Fetching from webservice is successful however from the documents directory I keep getting null image.Can't seem to find what's wrong here. - (void)saveImage:(UIImage*)image withName:(NSString *)imageName { if (image != nil) { NSArray *paths =

问题 I am saving photos a user takes with UIImagePickerController to the user's documents directory. When the app successfully uploads the image to the server, I would like to delete the locally saved image. I save the image to documents directory like this: /*Save image to documents directory, as opposed to core data for better memory management*/ NSString *myUniqueName = [NSString stringWithFormat:@"%lu.png", (unsigned long)([[NSDate date] timeIntervalSince1970]*10.0)]; NSArray *paths =

问题 I am downloading some mp3 files through my application using NSURLConnection. Actually where can I save the downloaded file. Someone says that saving in to NSDocumentDirectory will lead to app rejection. Can I save the file to NSCacheDictionary and retrieve this from itunes? I used this bit of code to save files to NSCacheDictionary NSString *cachesPath = [NSSearchPathForDirectoriesInDomains( NSCachesDirectory, NSUserDomainMask, YES) objectAtIndex: 0]; NSString *documentsDirectoryPath =

问题 I am new to iPhone, I want to check whether Myfile exists in folder inside DocumentDirectory ? For eg: Myfile.epub is one of my file and i want to check whether this file exists at my DestPath or not ? DestPath is my DocumentDirectory path. DestPath=/Users/krunal/Library/Application Support/iPhone Simulator/5.0/Applications/D414BC19-C005-4D93-896D-A6FB71DE4D21/Documents/Derivatives Any help will be appreciated. 回答1: This solution worked for me.. You don't want to give the entire part of your

问题 Hi I'm using Dropbox API for my iOS project, here through dropbox iOS SDK's REST calls I'm getting my data and I'm caching my files in to my DocumentsDirectory, so as to avoid delay of loading file from server every time by service calls. So once a file downloaded from dropbox server I'll be keeping it inside my apps documents directory and for further reference I'm fetching from my documents directory. Here the problem is whenever a file is updated or modified a new revision number i will

问题 I am using ID3Lib example project to edit Title, Album and Artist ID3 tags on mp3 files and all is good until I come to adding an image (cover Art) if any one has any ideas how to finish off the below code that would be great: - (void)demo { nImage = [UIImage imageNamed:@"amazing-grace.jpg"];//unused NSString *imagePath = [[NSBundle mainBundle] pathForResource:@"amazing-grace" ofType:@"jpg"]; NSString *path = [[NSBundle mainBundle] pathForResource:@"amazing-grace-10s" ofType:@"mp3"]; NSArray

问题 I am new to iPhone, I made an app in which, i am downloading a book and storing it in a folder called book1Folder which is inside Document directory . now i wants name of all books in my array, there are 2 books inside a book1Folder but when i write this code it shows me array count is 3. Here is my code snippet, -(void)viewWillAppear:(BOOL)animated{ NSString *files; NSString *Dir=[self applicationDocumentsDirectory]; Dir=[Dir stringByAppendingPathComponent:@"book1Folder"];

问题 my first music downloading app get rejected due to some issues in data storage guidelines. i tried to save my mp3 file in NSDocumentDirectory. i need to resubmit my app by adding flag "Do not backup". here is my code, NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectoryPath = [[paths objectAtIndex:0]stringByAppendingPathComponent:@"Music.mp3"]; [receivedData writeToFile:documentsDirectoryPath atomically:YES]; [self

问题 I used this code to play songs it is not playing the songs inside the folders or folders of folders except the Documents directory. NSString *songname=[NSString stringWithFormat:@"%@",songArray[songIndex]]; NSLog(@"songname:%@",songname); NSString* saveFileName = songname; NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *path = [documentsDirectory stringByAppendingPathComponent