ios - 如何将字符串转成utf-8？

Question

我有一个像这样的 NSString:

NSString *word = @"119,111,114,100"

所以，我想做的就是将这个 NSString 转换为单词

那么问题是，我可以通过什么方式将字符串转换为单词？

Answer 1

// I have added some values to your sample input :-)
NSString *word = @"119,111,114,100,32,240,159,145,141";

// Separate components into array:
NSArray *array = [word componentsSeparatedByString:@","];

// Create NSData containing the bytes:
NSMutableData *data = [[NSMutableData alloc] initWithLength:[array count]];
uint8_t *bytes = [data mutableBytes];
for (NSUInteger i = 0; i < [array count]; i++) {
    bytes[i] = [array[i] intValue];
}

// Convert to NSString (interpreting the bytes as UTF-8):
NSString *str = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];

NSLog(@"%@", str);

输出:

word 👍