iOS - 数组转字符串

// 数组转字符串
- (NSString *)toReadableJSONString:(NSArray *)dataArr {
    NSData *data = [NSJSONSerialization dataWithJSONObject:dataArr
                                                   options:NSJSONWritingPrettyPrinted
                                                     error:nil];
    
    if (data == nil) {
        return nil;
    }
    
    NSString *string = [[NSString alloc] initWithData:data
                                             encoding:NSUTF8StringEncoding];
    return string;
}