nsinteger

I WANT to use NSinteger variable *strength in my code with if condition but it's not work.. :( if(strength == 11){ } How can i use if with NSInteger* NSInteger is a primitive value type; you don't really need to use pointers. So your declaration should read NSInteger strength; And not NSInteger *strength; However if you do need to use a pointer to an NSInteger (that is, NSInteger * ) for some reason, then you need to dereference the pointer to get the value: if (*strength == 11) { } but from what I see, I don't think this is the case. benwong I assume you must be adding an * when you declare

I have a UITextView and i would like to limit the number of characters a user can input. i have also tried to display a warning if the textfield is empty but to no luck. textview.h @property (nonatomic,strong) IBOutlet UITextView *textField; @property (nonatomic, retain) NSString *userText; textview.m - (IBAction)next:(id)sender { self.userText = self.textField.text; if ([self.textField.text length] == 0) { UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Error!" message:@"Enter some text" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alertView show]; } } here is

I have a large NSArray containing NSNumbers like 3, 4, 20, 10, 1, 100, etc... How do I get the total sum of all these NSNumbers (3 + 4 + 20 + 10 + 1 + 100 + etc...) as one total NSInteger ? Thank you! NSInteger sum = 0; for (NSNumber *num in myArray) { sum += [num intValue]; } You can use this: NSArray* numbers = //array of numbers NSNumber* sum = [numbers valueForKeyPath: @"@sum.self"]; fabrice truillot de chambrier long long sum = ((NSNumber*)[array valueForKeyPath: @"@sum.longLongValue"]).longLongValue; Iterate through the array int count = [array count]; NSInteger sum = 0; for (int i = 0;

I'm trying to make one string out of several different parts. This below is what i have right now. I don't get any errors in my code but as soon as i run this and do the event that triggers it i get EXC_BAD_ACCESS . Is there another way of casting this NSInteger into a NSString ? NSString *part1, *part2, *tempString; NSInteger num1; NSInteger num2; part1=@"some"; part2=@"text"; tempString = [NSString stringWithFormat:@"%@%@%@%@", part1, (NSString *)num1, part2, (NSString *)num2]; A string and an integer are fundamentally different data types, and casting in Objective-C won't do a conversion