iOS call void when showing the view

[spire.bt]

is there something that can call a -(void) every time a view shows.
I am rotating between two views, so when i go to the second view and then return to the first view I want a void to be called automatically from the first view

I've try to do this with

 -(void)viewWillAppear:(BOOL)animated

and

 - (void)viewDidLoad

by putting a NSLog in them but it doesn't print when i return to the first view. any suggestions?

something like viewDidShow😕

 

[Luke Redpath]

How are you showing/hiding your second view? Post code.

 

[spire.bt]

I have two methods in the app delegate

-(void)goTo1{ 

 [self.window addSubview:[viewController view]]; 
 [settingsViewController.view removeFromSuperview];


 [UIView beginAnimations:nil context:NULL];
 [UIView setAnimationDuration:1.0];
  //removing the settingsViewController form the view and setting the animation
  [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:window cache:NO];

  [UIView commitAnimations];
  [settingsViewController release];
  settingsViewController = nil; }

and

-(void)goTo2{

 //calling the .xib file and the SettingsViewController
 SettingsViewController *aSettingsView = [[SettingsViewController alloc] initWithNibName:@"Settings" bundle:nil];
 [self setSettingsViewController:aSettingsView];
 [aSettingsView release];

 [self.window addSubview:[settingsViewController view]];
 //moving the view 30px down
 [[settingsViewController view] setFrame:CGRectMake(0, 20, 320, 460)];

 [UIView beginAnimations:nil context:NULL];
 [UIView setAnimationDuration:1.0];
 //setting the animation
 [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:window cache:YES];

 [UIView commitAnimations]; 
 [webskiAppBetaViewController release];
 webskiAppBetaViewController = nil;
}

and IBActions in the 2 view controllers
first One

-(IBAction)goToView2{

 WebskiAppBetaAppDelegate *mainDelegate = (WebskiAppBetaAppDelegate *)[[UIApplication sharedApplication] delegate];
 [mainDelegate goTo2]; 
}

and teh second one

-(IBAction)goToView1{
 WebskiAppBetaAppDelegate *maniDelegate = (WebskiAppBetaAppDelegate *)[[UIApplication sharedApplication] delegate];
 [maniDelegate goTo1];
}

so now when i call goToVIew1 I also want to run a method that is in the view 1

something like this

-(IBAction)goToView1{

 WebskiAppBetaAppDelegate *maniDelegate = (WebskiAppBetaAppDelegate *)[[UIApplication sharedApplication] delegate];
 [maniDelegate goTo1];
[self methodInFirstVIew]; //this method exists in the first view
}

 

[dejo]

Also, your phrasing is a little strange: you don't "call a void"; you call a method whose return value happens to be void.
Just like if you had:

- (NSString *)stringForThing;

you wouldn't call an NSString* but rather you would call a method whose return type is NSString*.

And if you want to be really technical: you don't even call methods; you pass a message to an object.

EDIT:

P.S. I don't think addSubview: triggers the viewWillAppear: or viewDidAppear: methods the way you'd like it to. You should probably consider presenting the views either modally or through a navigationController.

 

[spire.bt]

Also, your phrasing is a little strange: you don't "call a void"; you call a method whose return value happens to be void.
Just like if you had:

- (NSString *)stringForThing;

you wouldn't call an NSString* but rather you would call a method whose return type is NSString*.

And if you want to be really technical: you don't even call methods; you pass a message to an object.

EDIT:

P.S. I don't think addSubview: triggers the viewWillAppear: or viewDidAppear: methods the way you'd like it to. You should probably consider presenting the views either modally or through a navigationController.

I don't see how this was helpful but "call a -(void) " obviously minds you so next time i will try to write "call the -(void) SomeVoid;"
or from now on I will pass a message to an object, but what about the problem that i have???

 

[seepel]

but what about the problem that i have???

Well dejo answer that as well. You are essentially rewriting the modal view controller scheme when it seems like you don't have to. Is there a reason you are not using a modal view controller?

 

[Luke Redpath]

I don't see how this was helpful but "call a -(void) " obviously minds you so next time i will try to write "call the -(void) SomeVoid;"

Learning to refer to language constructs in the same way as everyone else is generally useful as it helps avoid confusion. 😉

Have you considered using the UIView animation callbacks (animationDidStopSelector: off of the top of my head - check the docs) to perform a selector when the flip animation has finished?

 

[Sykte]

I don't see how this was helpful but "call a -(void) " obviously minds you so next time i will try to write "call the -(void) SomeVoid;"
or from now on I will pass a message to an object, but what about the problem that i have???

Personally I would step back and pick up a book and do some reading before moving forward. You're missing a huge foundation that will hurt you later on when trying to get an app approved. Programming is very similar to any other langauge, hence 'programming langauge'. Sure you may know a few words in french but that doesn't mean you can form a proper sentence.

 

[spire.bt]

Thx for the responses but don't you judge me for my coding I'm learning. I'm sure none of you just started knowing Objective C from nowhere.
This is my way of learning, by making a real project (application)

 

[Luke Redpath]

Thx for the responses but don't you judge me for my coding I'm learning. I'm sure none of you just started knowing Objective C from nowhere.
This is my way of learning, by making a real project (application)

Nobody is judging you, we are simply giving you some useful advice.

 

[Sykte]

Thx for the responses but don't you judge me for my coding I'm learning. I'm sure none of you just started knowing Objective C from nowhere.
This is my way of learning, by making a real project (application)

Not trying to judge only trying to help you understand that a solid foundation is extermely important and overall your learning process will be shorter and easier.

This is my way of learning, by making a real project (application)

Which isn't wrong just don't forget to read ->(edit:learn) the fundamentals.


Good luck