ios - Unicode在iOS中无法正常工作

Question

将unit设置为\u20AC时，我的unicode为UILabel，但标签上却出现了unicode。有时它正在打印欧元，但大多数情况下是在标签上打印unicode。

我的代码在这里

    NSLog(@"Currecy %@",currencySymbol);
    UILabel *priceLbl = [[UILabel alloc] initWithFrame:CGRectMake(180, 10, 45, 25)];

    priceLbl.textColor = [UIColor whiteColor];
    priceLbl.textAlignment = NSTextAlignmentCenter;
    priceLbl.font = [UIFont fontWithName:@"ProximaNova-Bold" size:15];
    priceLbl.tag  = 1001;
    fair = [NSString stringWithFormat:@"%d",arc4random()%50];
    priceLbl.text = [NSString stringWithFormat:@"%@ %@",fair,currencySymbol];

输出
货币\ u20AC

Printing description of priceLbl:
<UILabel: 0x7faade3095a0; frame = (185 10; 50 25); text = '\u20AC'; userInteractionEnabled = NO; tag = 1001; layer = <_UILabelLayer: 0x7faadbd91bb0>>

我想尽一切可能设置输出。例如



获取服务器响应

{
    currency = "\\u20AC";
    description = "You have been successfully logged in.";
}

and the currency symbol replacing "\\" with "\"

NSString *currency = [response[@"currency"] stringByReplacingOccurrencesOfString:@"\\\\" withString:@"\\"];

Answer 1

NGUYEN MINH的答案为我工作如下:

NSString *currencySymbol = @"\\u20AC";
NSString *fair = @"1.99 ";

NSString *convertedString = currencySymbol;

CFStringRef transform = CFSTR("Any-Hex/Java");
CFStringTransform((__bridge CFMutableStringRef)convertedString, NULL, transform, YES);

label.text = [NSString stringWithFormat:@"%@ %@", fair, convertedString];

问题是您的currencySymbol包含: @"\\u20AC"，它是6个字符的字符串，而不是一个字符串 @"\u20AC"
另一个可行的解决方案:

NSString *currencySymbol = @"\\u20AC";
NSString *fair = @"1.99 ";

currencySymbol = [NSString
                   stringWithCString:[currencySymbol cStringUsingEncoding:NSUTF8StringEncoding]
                   encoding:NSNonLossyASCIIStringEncoding];


label.text = [NSString stringWithFormat:@"%@ %@", fair, currencySymbol];