NSData writeToFile not working - ios

Question

I cant seem to get nsdata to write to a file. Any ideas what i may be doing wrong. Thanks in advance.
NSString* filename = #"myfile.txt";
NSString *applicationDocumentsDir = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *storePath = [applicationDocumentsDir stringByAppendingPathComponent:filename];
if ([fileManager fileExistsAtPath:applicationDocumentsDir])
NSLog(#"applicationDocumentsDir exists"); // verifies directory exist
NSData *data = [NSData dataWithContentsOfURL:URL];
if (data) {
NSString *content = [[NSString alloc] initWithBytes:[data bytes]
length:[data length] encoding: NSUTF8StringEncoding];
NSLog(#"%#", content); // verifies data was downloaded correctly
NSError* error;
[data writeToFile:storePath options:NSDataWritingAtomic error:&error];
if(error != nil)
NSLog(#"write error %#", error);
}
I keep getting the error
"The operation couldn’t be completed. No such file or directory"

Answer 1

Try
NSString *storePath = [applicationDocumentsDir stringByAppendingPathComponent:#"myfile.txt"];
And
if ([[NSFileManager defaultManager] fileExistsAtPath:storePath])
NSLog(#"applicationDocumentsDir exists");

Answer 2

To get more information, you can use
writeToFile:options:error:
instead of
writeToFile:atomically:
but you need to create all the subdirectories in the path prior to doing the write. Like this:
// if the directory does not exist, create it...
if ( [fileManager fileExistsAtPath:dir_path] == NO ) {
if ( [fileManager createDirectoryAtPath:dir_path withIntermediateDirectories:NO attributes:NULL error:&error] == NO ) {
NSLog(#"createDirectoryAtPath failed %#", error);
}
}