iphone - 文本框加倍然后显示为字符串 AlertView

Question

我无法让双重显示在我的警报视图中。该字符串在 AlertView 中一直显示为 0。提前致谢！

    double binRadius = [txtRadiusInches.text doubleValue] / 12 + [txtRadiusFeet.text doubleValue];
NSString *myString = [NSString stringWithFormat:@"%d", binRadius];

UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Estimatated Amount"
                                                message:myString
                                               delegate:self
                                      cancelButtonTitle:@"Continue"
                                      otherButtonTitles:@"Clear All", nil];

[alert show];

Answer 1

%d(and %i) 是整数（小数）的格式说明符。对于浮点数，您应该使用%f.