NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init]; spa
formatter.numberStyle = NSNumberFormatterDecimalStyle; orm
NSString *string = [formatter stringFromNumber:[NSNumber numberWithInt:123456789]]; ci
NSLog(@"Formatted number string:%@",string); string
輸出結果爲:[1223:403] Formatted number string:123,456,789 it
其中NSNumberFormatter類有個屬性numberStyle,它是一個枚舉型,設置不一樣的值能夠輸出不一樣的數字格式。該枚舉包括: form
enum { im
NSNumberFormatterNoStyle = kCFNumberFormatterNoStyle, 語言
NSNumberFormatterDecimalStyle = kCFNumberFormatterDecimalStyle, di
NSNumberFormatterCurrencyStyle = kCFNumberFormatterCurrencyStyle, 數字
NSNumberFormatterPercentStyle = kCFNumberFormatterPercentStyle,
NSNumberFormatterScientificStyle = kCFNumberFormatterScientificStyle,
NSNumberFormatterSpellOutStyle = kCFNumberFormatterSpellOutStyle
};
typedef NSUInteger NSNumberFormatterStyle;
各個枚舉對應輸出數字格式的效果以下:
[1243:403] Formatted number string:123456789
[1243:403] Formatted number string:123,456,789
[1243:403] Formatted number string:¥123,456,789.00
[1243:403] Formatted number string:-539,222,988%
[1243:403] Formatted number string:1.23456789E8
[1243:403] Formatted number string:一億二千三百四十五萬六千七百八十九
其中第三項和最後一項的輸出會根據系統設置的語言區域的不一樣而不一樣。