iOS Can't write to a file on the device (but can in simulator)

[dantastic]

I keep some settings in a plist.

I've the following methods to open the plist and then save it again when I'm done.

		NSString *path = [[NSBundle mainBundle] bundlePath];
		NSString *filePath = [path stringByAppendingPathComponent:@"MySettings.plist"];
		MySettingsDictionary = [[NSMutableDictionary alloc] 
							 initWithContentsOfFile:filePath];

- (void)save:(NSDictionary *)saveData {
	NSString *path = [[NSBundle mainBundle] bundlePath];
	NSString *filePath = [path stringByAppendingPathComponent:@"MySettings.plist"];
	[saveData writeToFile:filePath atomically:YES];
	NSLog(@"It this called at all??? - Yes it is...");
}

In simulator this works just fine, whatever I change in my settings gets written to the plist and I'm able to read the updated values from my main application then.

Testing this on a physical iPhone yield a slightly different result - in that the file isn't updated. I dp get printed in the log "It this called at all??? - Yes it is..." but that's it, no other errors or anything.

Anyone have any idea what the problem might be or how to troubleshoot this one?? I'm a bit stuck as it's working perfectly in the simulator...

 

[Guiyon]

IIRC, you are not allowed to modify your application's bundle in any way on the iPhone.

 

[Luke Redpath]

IIRC, you are not allowed to modify your application's bundle in any way on the iPhone.

This.

You need to write to a location in your app's sandbox (like it's Documents directory).

 

[dantastic]

You are indeed both correct.

And here is how to do it: http://ipgames.wordpress.com/tutorials/writeread-data-to-plist-file/