iphone - 当我连续单击反向按钮时，它会重复给我数据而不是一次？为什么？

Question

- (IBAction)reverseMethod
{   
    //NSUInteger count = [array1 count];

    for( int i=[array1 count]-1;i<[array1 count];i--)
    {
        [array2 addObject:[array1 objectAtIndex:i]];
        NSLog (@"Object at index %d is: %@", 
               i, [array1 objectAtIndex: i]);


    }
    array1=array2;
    [tblMyTable reloadData];

}

Answer 1

如果你想反转数组的对象，你可以这样做，

- (IBAction)reverseMethod { 

    array1 = [[array1 reverseObjectEnumerator] allObjects];
    [tblMyTable reloadData];
}