How to identify which button is clicked in Objective-C?

I am a new iPad developer. I have created UIButton programmatically, in which I want to identify user has clicked on which button and according to that I want to do some action. How should I identify this? Here is my code snippet: ``` for(int i=0;i<[_array count];i++) { UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect]; button.tag=count; [button addTarget:self action:@selector(aMethod:) forControlEvents:UIControlEventTouchDown]; button.backgroundColor=[UIColor redColor]; [button setTitle:@"Show View" forState:UIControlStateNormal]; button.frame = CGRectMake(xpos, 270.0, 200.0, 150.0); [self.view addSubview:button]; } ``` This is what I'm doing now: I thought I will assign count to each button and I will pass this count to button click method. Is this a good idea? Is there any other way possible? On button click I'm calling `aMethod`: ``` -(void)aMethod:(id)sender{ NSLog(@"btn clicked"); } ``` Any help will be appreciated!