我怎樣才能改變串（123456789）串（123,456,789）在Objective C中

Question

一個string具有貨幣價值

NSString *money = "123456789"; 

我要印鈔票一樣123,456,789

Answer 1

通過Nik

使用作答NSNumberFormatter。

具體

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

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

[formatter release]; 

默認NSNumberFormatter使用當前位置，這樣的分組分隔符被默認設置爲自己的正確的價值觀。關鍵是要記住設置一個數字風格。

請參考以下鏈接

1- Link #one

2- Link #Two

Answer 2

Oneliners爲贏得

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

Answer 3

試試這個：

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]]; 

並請一併參考以下鏈接...

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

[如何添加逗號人數目標C每3個數字？（HTTP的