在iOS中格式化貨幣輸出

Question

- (void)textFieldDidEndEditing:(UITextField *)textField

{
    if (textfield1) {

        NSString *txt = self.textfield1.text;

        double num1 = [txt doubleValue];

        double tCost = num1 /100;

        NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];

        [numberFormatter setNumberStyle: NSNumberFormatterCurrencyStyle];


        NSString *numberAsString = [numberFormatter stringFromNumber:[NSNumber numberWithFloat:tCost]];

        self.textfield1.text = [NSString stringWithFormat:@"%0.@",numberAsString];
    }
}

這是將代碼將文本字段的輸出格式化為貨幣的代碼，試圖找出如何格式化貨幣以使輸出為，

如果有人輸入1625，則當前將其格式設置為0.1625；如果有人輸入50，則將其格式設置為0.50，這是正確的，因為它應該是一個計算器，用於收取百分率或小數的電費。

Answer 1

要獲取貨幣格式，請使用以下代碼：

- (NSString*) getAmountInCurrencyFormatWithValue:(NSString*) valueString {

    NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];
    [numberFormatter setNumberStyle: NSNumberFormatterCurrencyStyle];
    NSString *numberAsString = [numberFormatter stringFromNumber:[NSNumber numberWithDouble:[valueString doubleValue]]];

    return numberAsString;
}

Answer 2

• （void）textFieldDidEndEditing：（UITextField *）textField

{如果（textfield1）{

    NSString *txt = self.textfield1.text;

    double num1 = [txt doubleValue];


    double tCost = num1/100;





    NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];

    [numberFormatter setNumberStyle: NSNumberFormatterCurrencyStyle];


    //  NSString *numberAsString = [numberFormatter stringFromNumber:[NSNumber numberWithFloat:tCost]];

    //NSString *numberAsString = [numberFormatter stringFromNumber:
    //                      [NSNumber numberWithDouble:[tCost doubleValue]]];



    [numberFormatter setMaximumFractionDigits:3];

    [numberFormatter setRoundingMode: NSNumberFormatterRoundUp];

    NSString *numberString = [numberFormatter stringFromNumber:[NSNumber numberWithFloat:tCost]];


    self.textfield1.text = [NSString stringWithFormat:@"%@",numberString];
}

}