Question concerning File Handling - iphone

Question

i got the following problem :
i am trying to create a file with the following Code :
NSString *homeDirectory = NSHomeDirectory();
NSString *documentDirectory = [homeDirectory stringByAppendingPathComponent:#"Documents"];
NSString *filePath = [documentDirectory stringByAppendingPathComponent:#"Test.txt"];
NSFileHandle *savedFile = nil;
savedFile = [[NSFileHandle FileHandleForWritingAtPath:filePath]retain];
NSString *data = #"testmessage";
[savedFile writeData:[string dataUsingEncoding:NSUTF8StringEncoding]];
[savedFile synchronizeFile];
[savedFile closeFile];
My Question is the following. Running this on a MAC does not give me any Errors whatsoever. But the File itself seems to be nonexistant or at least not locateable.
I need to find and access the File and i have to be able to export it to my Mac using a mobile iOS Device
thanks in advance :)
h4wkeye

Answer 1

You need to check that savedFile is not nil (see the docs here).
NSString *homeDirectory = NSHomeDirectory();
NSString *documentDirectory = [homeDirectory stringByAppendingPathComponent:#"Documents"];
NSString *filePath = [documentDirectory stringByAppendingPathComponent:#"Test.txt"];
NSFileHandle *savedFile = nil;
savedFile = [[NSFileHandle fileHandleForWritingAtPath:filePath]retain];
if (nil == savedFile) {
NSLog(#"Could not create saved file at %#", filePath);
}
NSString *data = #"testmessage";
[savedFile writeData:[string dataUsingEncoding:NSUTF8StringEncoding]];
[savedFile synchronizeFile];
[savedFile closeFile];