You are right, you have to change all “return -1.0f” by “return nil”.

Better, you should replace all “return -1.0f” and the last line: “return nil” by:
return [NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithInt:-1], @”curCapacity”, [NSNumber numberWithInt:-1], @”maxCapacity”, nil];;

So in your code, you should do:

int level = [[[self batteryData] objectForKey:@”curCapacity”] intValue];
curCapacity.text = [NSString stringWithFormat:@"%d mAh", curCapacity];

Note that level is now an int, not a float.

HTH,
Stephan

I have done this but get the error “incompatible types in return” at the other two instances of return 1.0f; Should these be return nil; also?

Before I used double level = [self batteryLevel]; when I was using your code to return a percent value. I then put the variable ‘level’ into the required label. How exactly would I put the value for curCapacity into a label now that NSDictionary is being used? I tried:

double level = [self batteryData];
curCapacity.text = [NSString stringWithFormat:@"%.2f %", curCapacity];

This did not work. Please note I changed:

– (double) batteryLevel;

In the .h file to:

- (NSDictionary *) batteryData;

Thanks once again for your help! I hope you can understand what I mean.
Stuart

Just change the definition of the method to:

- (NSDictionary *) batteryData

Then replace the

return percent;
by
return [NSDictionary dictionaryWithObjectsAndKeys:[NSNumber numberWithInt:curCapacity], @"curCapacity", [NSNumber numberWithInt:maxCapacity], @"maxCapacity", nil];

also replace the last line to

return nil;

That should do the trick.

Thanks in advance,
Stu

Thanks for your help.