nsnumber

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Issue with NSNumber -initWithDouble and resulting values

I\'m using NSNumber to store various values, but sometimes run into issues when doing calculations with the values and initializing new NSNumber objects for the results. I\'ve figured out how to overc[详细]

2023-01-16 16:17 分类：问答
Convert NSString to NSNumber

i get a nsstring from a nsdictionary via: inputString = [dataUsage valueForKey:@\"amount\"]; after that the string looks like: 23,56[详细]

2023-01-15 09:04 分类：问答
iPhone: Problem with incrementing NSNumber & displaying transparent images (UIImageView)

I have a problem with NSNumber: I don\'t understand how to increment and decrement it! I\'ve tried int with [NSNumber intValue] and so on, but it didn\'t work!!!! I just want a page counter which can[详细]

2023-01-14 17:51 分类：问答
How can I get an NSNumber without performing alloc on it, so it will respond to initWithInt?

My understanding is that a \'convenience\' method such as [nsnumber initWithInt] should create a copy of the indicated class, initialized to the desired value.[详细]

2023-01-14 06:28 分类：问答
Adding data to an NSDictionary... SRSLY? Isn't there a quicker way?

I\'m from a Flash ActionScript background. Where I\'m from, I can set a dictionary-like object like this:[详细]

2023-01-11 12:05 分类：问答
Objective c: Check if integer/int/number

In objective c, how can i check if a string/NSNumber is an integer or int开发者_StackOverflow中文版If you\'re trying to determine whether or not an NSString has a numeric value or not, try using NSNum[详细]

2023-01-11 03:49 分类：问答
Formatting number as percentage

I don\'t understand how NSNumberFormatterPercentStyle works! Example: NSNumber *number = [NSNumber numberWithFloat:90.5];[详细]

2023-01-10 22:56 分类：问答
Should I use NSNumber or an int in an iPhone/iPad class?

I\'m creating an object that will have two integers (or NSNumbers) and an NSDate as ivars. This object will be in an NSMutableArray. To my knowledge, we cannot put primative integers in an NSMutableAr[详细]

2023-01-10 03:15 分类：问答
NSNumber intValue giving EXC_BAD_ACCESS

I have an NSNumber being passed to be via a 3rd party API, and when I call intValue on the index I get a EXC_BAD_ACCESS开发者_如何转开发 error:[详细]

2023-01-08 13:37 分类：问答
NSNumber Warning when using setter but code seems to work OK - Passing argument 1 makes integer from pointer without a cast

I have an object Foo that has an NSNumber 开发者_StackOverflow中文版property which is declared like this:[详细]

2023-01-08 12:05 分类：问答