Question

I am learning objective-c and I get some trouble with delegates.

In a test application, i have a viewcontroller having a IUbutton, and another UITableViewcontroller. I want to make the TableViewController appears when I click the button.

the problem that the window object is not identified in this ViewController.

[self.window addSubview:viewController.view]; this line shows errors.

I think I should delegate the appdelagate to my viewcontroller ? how to do ?

Answer 1

you cant access the window by self you need an object of appDelegate class

so code like this

yourAppDelegate *objDelegate=(yourAppDelegate *)[[UIApplication sharedApplication] delegate];

now you can access the window,

[objDelegate.window addSubview:viewController.view];