Explain the use of below function with meaning in iphone

Question

Hey

I m confused to use following methods and i want the clear meaning of all so that i can use that perfectly in my project

1. -(void)viewWillAppear
2. -(void)viewWillDisappear
3. -(void)viewDidLoad
4. -(void)viewDidUnload
5. -(void)viewDidAppear
6. -(void)viewDidDisappear

Please can any body who knows these very well then please help me.

Thanks in Advance

Answer 1

Have you looked at the iPhone Developer Documentation for UIViewController? It explains it well I think.

Answer 2

This is from the top of my head. Here is some more info: http://tinyurl.com/ycp8ph5

-(void)viewWillAppear
Fired just before the uiview appears on the screen.

-(void)viewWillDisappear
Fired just before the uiview disappears from the screen.

-(void)viewDidLoad
Fired after the uview loaded into memory and after the IBOutlets are hooked up (if any)

-(void)viewDidUnload
Fired after the uview unloaded from memory.

-(void)viewDidAppear
Fired after the view appeared on the screen.

-(void)viewDidDisappear
Fired after view disappeared from the screen.