save image to subfolder of /library/Application Support/bundleID_name/... iOS - ios

Question

The following code works without error or exception - but still, it does not do what it should ! I wanted to save an image into the iOS library/Application Support folder. More precisely, the image should be placed into a /library/Application Support/bundleID_name/subfolder/ (and the subfolder being called "location1").
If I check the functionality with the iOS-Simulator, I can see the creation of the subfolder (i.e. .../library/Application Support/bundleID_name/location1/). Also the function "saveImage" works without exception. But there is no image being saved !!!! (i.e.the image-file is missing and the folder remains empty) !!
What could be the mistake ??
Here is my code with the call of two functions (see code below):
UIImage *in_image = [UIImage imageNamed:#"template009c.jpg"];
NSString *locDirectoryName = #"location1";
NSURL *LocationDirectory = [self appendLocationToApplicationDirectory:locDirectoryName];
[self saveImage:in_image :#"image1" :LocationDirectory];
With the corresponding function-Nr1:
- (NSURL*)appendLocationToApplicationDirectory:(NSString*)locationDirName
{
NSString* appBundleID = [[NSBundle mainBundle] bundleIdentifier];
NSFileManager*fm = [NSFileManager defaultManager];
NSURL* dirPath = nil;
// Find the application support directory in the home directory.
NSArray* appSupportDir = [fm URLsForDirectory:NSApplicationSupportDirectory
inDomains:NSUserDomainMask];
if ([appSupportDir count] > 0) {
// Append the bundle ID and the location-Foldername to the URL for the Application Support directory
dirPath = [[[appSupportDir objectAtIndex:0] URLByAppendingPathComponent:appBundleID] URLByAppendingPathComponent:locationDirName];
// If the directory does not exist, this method creates it.
// This method call works in OS X 10.7 and later only.
NSError* theError = nil;
if (![fm createDirectoryAtURL:dirPath withIntermediateDirectories:YES attributes:nil error:&theError]) {
// Handle the error.
NSLog(#"%#", theError.localizedDescription);
return nil;
}
else {
// Mark the directory as excluded from iCloud backups
if (![dirPath setResourceValue:#YES
forKey:NSURLIsExcludedFromBackupKey
error:&theError]) {
NSLog(#"Error excluding %# from iCloud backup %#", [dirPath lastPathComponent], theError.localizedDescription);
}
else {
NSLog(#"Location Directory excluded from iClud backups");
}
}
}
return dirPath;
}
And function Nr2:
//saving an image
- (void)saveImage:(UIImage*)image :(NSString*)imageName :(NSURL*)pathName {
NSData *imageData = UIImagePNGRepresentation(image); //convert image into .png format.
NSFileManager *fileManager = [NSFileManager defaultManager];
// NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
// NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *LocationDirectory = [pathName absoluteString];
NSString *fullPath = [LocationDirectory stringByAppendingPathComponent:[NSString stringWithFormat:#"%#.png", imageName]];
/***** THE FOLLOWING LINE DOES NOT SEEM TO DO WHAT IT IS SUPPOSED TO *******/
[fileManager createFileAtPath:fullPath contents:imageData attributes:nil];
/**** I also tried without the FileManager, but same problem - no file written... ***/
// [imageData writeToFile:fullPath atomically:NO];
NSLog(#"image saved");
}
By the way, getting the "fullPath" with the XCode-Debugger, I get:
"fullPath NSPathStore2 * #"file:/Users/username/Library/Application%20Support/iPhone%20Simulator/7.1/Applications/2BCC3345-9M55F-4580-A1E7-6694E33456777/Library/Application%20Support/bundleID_name/image1.png" 0x09d50950
Doesn't that also seem correct ?? But why is [fileManager createFileAtPath:fullPath contents:imageData attributes:nil]; not performing ???

Answer 1

This:
"fullPath NSPathStore2 * #"file:/Users/username/Library/Application%20Support/iPhone%20Simulator/7.1/Applications/2BCC3345-9M55F-4580-A1E7-6694E33456777/Library/Application%20Support/bundleID_name/image1.png" 0x09d50950
is not a valid path, it's a URL path but stored in a string. If you are going to use URL's then use ULRs rather than trying to convert to a string:
[imageData writeToURL:pathName atomically:YES];
(preferably naming the parameter as pathURL) and if you want to use paths then don't use a URL at any stage.
Also, where an API method returns an error or status flag, check it in the code as standard.

Answer 2

I'm pretty sure you can't save an image on a path you specify. You can save images on the gallery or in DocumentDirectory. This should be the code to save an image on the DocumentDirectory:
NSString *imgName=[#"imgname.png"];
[[NSUserDefaults standardUserDefaults]setValue:imgName forKey:#"imageName"];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *savedImagePath = [documentsDirectory stringByAppendingPathComponent:imgName];
UIImage *image = imageView.image; // imageView is my image from camera
NSData *imageData = UIImagePNGRepresentation(image);
[imageData writeToFile:savedImagePath atomically:NO];