objective-c - 如何将数字转换为指示性字符串

Question

我只是想知道如何将数字 1、2 或 3 转换为 First、second 或 Third ？任何帮助，将不胜感激。

Answer 1

尝试这个，

- (NSString *)getOrdinalTextFor:(NSInteger)number {

     NSNumber *numberValue = [NSNumber numberWithInteger:number];
     NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];
     [numberFormatter setNumberStyle:NSNumberFormatterOrdinalStyle];

     return [numberFormatter stringFromNumber:numberValue];
}

Answer 2

在此处输入链接描述从GitHub下载 Formatter 工具包

TTTOrdinalNumberFormatter *ordinalNumberFormatter = [[TTTOrdinalNumberFormatter alloc] init];
[ordinalNumberFormatter setGrammaticalGender:TTTOrdinalNumberFormatterMaleGender];
NSNumber *number = [NSNumber numberWithInteger:2];
NSString *str = [ordinalNumberFormatter stringFromNumber:number];
NSLog(@"%@", str);

阅读此链接，它非常有帮助：数字格式

Answer 3

看看这个可能对你有帮助

NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
    [formatter setNumberStyle: NSNumberFormatterSpellOutStyle];
    NSString* numberString = [formatter stringFromNumber:[NSNumber numberWithInt: 3]];
    NSLog(@"%@",numberString);