Can't get array declared

I want to make a simple picture display with a next button. I followe开发者_运维知识库d this code:

NSArray *pics2;
pics2=[[NSArray alloc] initWithObjects:

      [UIImage imageNamed:@"1.jpg"],
      [UIImage imageNamed:@"2.jpg"],
      [UIImage imageNamed:@"3.jpg"],
      [UIImage imageNamed:@"4.jpg"],
      [UIImage imageNamed:@"5.jpg"],
      [UIImage imageNamed:@"6.jpg"],
      [UIImage imageNamed:@"7.jpg"],
      [UIImage imageNamed:@"8.png"],
      [UIImage imageNamed:@"9.jpg"],
      nil
      ];
NSLog(@"%i",[pics2 count]);
for (int i=0;i<[pics2 count]; i++){
    [foto setImage:[pics2 objectAtIndex:i]];
}
[pics2 release];

And then after the @synthesize the IBAction.

-(IBAction) prox:(id)sender {

 static int i=0;
 if(i==8)
     i=0;
 [foto setImage:[pics2 objectAtIndex:i]];

But I'm getting the error "Use of undeclared identifier 'pics2'. Where am I supposed to declare the array 'pics2'?

You are releasing pics2 before using it. If you want pics2 to be available to all functions of your class then make it as a private variable in the header file.

Define the NSArray *pics2; in the .h file. Don't release it after creating, release it only in the dealloc method.