objective-c - 如何在Objective C中将字符串（123456789）更改为字符串（123,456,789）

Question

有string金钱价值

NSString *money = "123456789";

我想印钱，比如 123,456,789

Answer 1

Nik回复了

使用 NSNumberFormatter。

具体来说

NSNumberFormatter *formatter = [NSNumberFormatter new];
[formatter setNumberStyle:NSNumberFormatterDecimalStyle]; // this line is important!

NSString *formatted = [formatter stringFromNumber:[NSNumber numberWithInteger:2000000]];

[formatter release];

默认情况下 NSNumberFormatter 使用当前语言环境，因此默认情况下分组分隔符设置为正确的值。关键是要记住设置数字样式。

请参考这些链接

1-链接#one

2-链接#Two

Answer 2

try this:

NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
[formatter setNumberStyle:NSNumberFormatterCurrencyStyle];   //here is money style... or or you can also set your other style
NSString *str = [formatter stringFromNumber:[NSNumber numberWithInt:123456789]];

and also refer following links...

1. Objective-C: How to format string as $ Price
2. Using NSNumberFormatter to format currency in output UILabel

Answer 3

为胜利而战

NSString *decNumberString =  [NSNumberFormatter localizedStringFromNumber:[NSNumber numberWithInteger:[str integerValue]]
                                                     numberStyle:NSNumberFormatterDecimalStyle];