Iphone 阅读'；CSV'；xCode中的文件

你能帮我阅读这个csv文件吗

CSV输出 “^GSPC”，1403.36，“4/27/2012”，“下午4:32”，“3.381400.191406.641397.31574422720” “^IXIC”，3069.20，“2012年4月27日”，“下午5:30”，“+18.593060.343076.443043.30,0

ViewController.m

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处理CSV解析比初始代码所暗示的要复杂得多，因为需要忽略带引号的分隔符。比如说,

1,"Hello, world!",2

有三列，但NSScanner会找到四个标记（

1

，

“Hello

，“world！”，和

2

）

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要构建一个功能齐全的CSV解析器，有许多特殊情况需要处理，因此最快的方法是使用一个预构建的解析器。例如，您可以使用中描述的解析器。

我回答这个问题可能为时已晚，但这个答案可能有助于人们轻松阅读CSV文件。这就是我不想阅读C的原因SV文件

   - (void)viewDidLoad {
    [super viewDidLoad];
   //  printing the file path

      NSMutableArray *colA = [NSMutableArray array];
      NSMutableArray *colB = [NSMutableArray array];
   NSMutableArray *colC = [NSMutableArray array];
   NSMutableArray *colD = [NSMutableArray array];
  //  NSString* fileContents = [NSTemporaryDirectory() 
stringByAppendingPathComponent:@"yourfile.csv"];
NSString *fileContents = [[NSBundle mainBundle] 
 pathForResource:@"yourfile" ofType:@"csv"];

  NSURL*URl = [NSURL fileURLWithPath:fileContents];

  //        NSString* fileContents = [NSString 
stringWithContentsOfURL:@"YourFile.csv"];
   NSError *error;
  NSString* fileContentss = (NSString *)[NSString 
 stringWithContentsOfURL:URl encoding:NSASCIIStringEncoding 
error:&error];

   NSMutableArray *newArra = [[NSMutableArray alloc] init];
   [fileContentss stringByReplacingOccurrencesOfString:@"\"" 
  withString:@""];
      NSArray* rows = [fileContentss 
   componentsSeparatedByString:@"\n"];

   NSMutableArray *roearr = [[NSMutableArray alloc] init];
   roearr = [rows mutableCopy];


    [roearr removeObjectAtIndex:[rows count] - 1];
      for (NSString *row in roearr){



          NSArray* columns = [row componentsSeparatedByString:@","];

          newArra = [columns mutableCopy];

         [newArra removeObjectAtIndex:[newArra count] - 1];
            [colA addObject:newArra[0]];
            [colB addObject:newArra[1]];
            [colC addObject:newArra[2]];
            [colD addObject:columns[3]];
       }

     NSLog(@"columns[0] %@",colA);
    NSLog(@"columns[0] %@",colB);
    NSLog(@"columns[0] %@",colC);
    NSLog(@"columns[0] %@",colD);


   // Do any additional setup after loading the view, typically from 
  a nib.
  }

---

请尝试此方法：-（NSArray*）Components由字符串分隔：（NSString*）分隔符；请告诉我，如何将此文件内容作为字符串读取？“initWithContentsOfURL”在这里不起作用。

   - (void)viewDidLoad {
    [super viewDidLoad];
   //  printing the file path

      NSMutableArray *colA = [NSMutableArray array];
      NSMutableArray *colB = [NSMutableArray array];
   NSMutableArray *colC = [NSMutableArray array];
   NSMutableArray *colD = [NSMutableArray array];
  //  NSString* fileContents = [NSTemporaryDirectory() 
stringByAppendingPathComponent:@"yourfile.csv"];
NSString *fileContents = [[NSBundle mainBundle] 
 pathForResource:@"yourfile" ofType:@"csv"];

  NSURL*URl = [NSURL fileURLWithPath:fileContents];

  //        NSString* fileContents = [NSString 
stringWithContentsOfURL:@"YourFile.csv"];
   NSError *error;
  NSString* fileContentss = (NSString *)[NSString 
 stringWithContentsOfURL:URl encoding:NSASCIIStringEncoding 
error:&error];

   NSMutableArray *newArra = [[NSMutableArray alloc] init];
   [fileContentss stringByReplacingOccurrencesOfString:@"\"" 
  withString:@""];
      NSArray* rows = [fileContentss 
   componentsSeparatedByString:@"\n"];

   NSMutableArray *roearr = [[NSMutableArray alloc] init];
   roearr = [rows mutableCopy];


    [roearr removeObjectAtIndex:[rows count] - 1];
      for (NSString *row in roearr){



          NSArray* columns = [row componentsSeparatedByString:@","];

          newArra = [columns mutableCopy];

         [newArra removeObjectAtIndex:[newArra count] - 1];
            [colA addObject:newArra[0]];
            [colB addObject:newArra[1]];
            [colC addObject:newArra[2]];
            [colD addObject:columns[3]];
       }

     NSLog(@"columns[0] %@",colA);
    NSLog(@"columns[0] %@",colB);
    NSLog(@"columns[0] %@",colC);
    NSLog(@"columns[0] %@",colD);


   // Do any additional setup after loading the view, typically from 
  a nib.
  }