原文地址

• 補(bǔ)充

NSNumberFormatter *numberFormatter = [NSNumberFormatter new];
numberFormatter.numberStyle = NSNumberFormatterDecimalStyle;
numberFormatter.multiplier = @1000;
NSLog(@"%@千",[numberFormatter numberFromString:@"1000"]);  // 1千
NSLog(@"%@千",[numberFormatter stringFromNumber:@0.001]);  // 1千    

關(guān)于multiplier（縮放因子）的說(shuō)明：當(dāng) numberFormatter 接收的是 NSNumber 類(lèi)型時(shí)，最終的結(jié)果為：number * multiplier，當(dāng)接收的是 NSString 類(lèi)型時(shí)，結(jié)果為：string / multiplier。

• 官方文檔：

A multiplier is a factor used in conversions between numbers and 
strings (that is, numbers as stored and numbers as displayed). 
When the input value is a string, the multiplier is used to divide, 
and when the input value is a number, the multiplier is used to 
multiply. These operations allow the formatted values to be 
different from the values that a program manipulates internally.