NSMutableData or NSMUtableArray?

时间:2016-04-25 09:43:21

标签: ios objective-c nsmutablearray nsmutabledata

my problem is, i have a NSMutableArray of 3 objects :

[myMutableArray insertObject :Obj1 atIndex:0];
[myMutableArray insertObject :Obj2 atIndex:1];
[myMutableArray insertObject :Obj3 atIndex:3];

And then, insert atIndex0 the Obj3. After that, i want to "push" my mutable array as index1 become my first index. I saw that NSMutableData could be interesting but i don't know how to use it. Is it possible ?
I already try to use NSMUtableData but, don't know how to handle it. Thanks a lot...

1 个答案:

答案 0 :(得分:0)

您可以使用这些方法将对象推送到NSMutableArray:

  1. 到头开始

    [myMutableArray insertObject:obj1 atIndex:0];
    [myMutableArray insertObject:obj2 atIndex:0];
    
  2.   

    如果索引已被占用,则索引处及以后的对象为   通过在他们的指数上加1来腾出空间。 (苹果)

    1. 到最后

      [myMutableArray addObject:obj1];
      [myMutableArray addObject:obj2];
      
    2.   

      要添加到数组内容末尾的对象。该值不得为零。 (苹果)