NSScreencast Episode #71 NSNumberFormatter

NSNumberFormatter - NSScreencast

数値のフォーマット表示

• NSNumberFormatter
  • 通貨 [formatter setNumberStyle:NSNumberFormatterCurrencyStyle];
  • 負数 [formatter setNegativeFormat:@"(¤00.0)"];
• Locale
  • NSLocale *locale = [NSLocale currentLocale];
  • [[NSLocale alloc] initWithLocaleIdentifier:@"en_US"]
• テキスト入力の度に入力値を , 区切りに整形する
  • observe textchange
  • [[NSNotificationCenter defaultCenter] addObserver:self
  • name:UITextFieldTextDidChange
• _suppressChangeNotification
• long long
  • NSLog する時は %lld https://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/Strings/Articles/formatSpecifiers.html