Saving NSMutableArray to file

[TrueScot]

In the Simulator I can save an NSMutableArray to a file and read it back with the following code:

NSFileManager *fileManager = [NSFileManager defaultManager];
if ([fileManager fileExistsAtPath:@"RiskValues"]){ // If file exists open into table
NSLog(@"Risk Values File Exists");
NSArray *paths = NSSearchPathForDirectoriesInDomains
(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *fullFileName = [NSString stringWithFormat:@"RiskValues", documentsDirectory];
gRiskValues = [[NSMutableArray alloc] initWithContentsOfFile:fullFileName];
gRiskValuesAlreadyInitialised = YES;
} else {
NSLog(@"Can't find RiskValues file, so initialising gRiskValues table");
Do something else .......
}


This doesn't work on the device. I have tried to locate the file using the following but it still doesn't work:

NSString *fullFileName = [documentsDirectory stringByAppendingPathComponent@"RiskValues"];


What am I doing wrong?

[BrianSlick]

"RiskValues" is not a complete path, so your test should fail every time. I'm surprised it works in the simulator.

[TrueScot]

You are quite right Brian. The file path should indeed be -

NSString *fullFileName = [documentsDirectory stringByAppendingPathComponent:@"filepath in here"];

Sometimes you can't see it for looking!

Thanks for the reply.