iOS---把字符串分割成数组

    NSArray *lab = [status.labels componentsSeparatedByString:@","];

   NSString *button0 = [lab objectAtIndex:0];

      NSString *button1 = [lab objectAtIndex:1];

      NSString *button2 = [lab objectAtIndex:2];

      NSString *button3 = [lab objectAtIndex:3];

    NSLog(@" 0 %@ ",button0);

    NSLog(@" 2 %@ ",button1);

    NSLog(@" 1 %@ ",button2);

    NSLog(@" 3 %@ ",button3);