Showing a video in welcome screen before moving to login screen

Question

In my application, I would like to show a movie on the first screen (the first time user opens an application) and when movie is finished running, the login screen should show.

I have two questions:

The way I am trying to do it, is to show the video on a separate controller and when movie is finished, perform segue to the login controller. Is this the correct way to do it?
I am doing performSegueWithIdentifier when I receive MPMoviePlayerPlaybackDidFinishNotification. The problem is that nothing happens. The video remains on the screen and the controller is not changed. I don't see any errors in the console. Is there a problem to perform segue from NSNotificationCenter notification?

Check if you are actually doing it on the main thread. If not, try dispatch_async(dispatch_get_main_queue(), ^{//your code here//}); — Tcharni, Mar 11 '14 at 07:39
I am - performSegueWithIdentifier is done on the main thread, as a result of MPMoviePlayerPlaybackDidFinishNotification — Erik Sapir, Mar 11 '14 at 07:41
In that case, I think it is a problem with the program control. Did you set up and implement the delegate correctly? Perhaps set up breakpoints at MPMoviePlayerPlaybackDidFinishNotification function, to see if program control does pass there. — Tcharni, Mar 11 '14 at 07:45
Yes - MPMoviePlayerPlaybackDidFinishNotification is called and even the segue is called. In fact, if i move the performSegueWithIdentifier to viewDidLoad and now showing video at all, the segue works — Erik Sapir, Mar 11 '14 at 07:47
Try putting the performSegueWithIdentifier inside dispatch_async(dispatch_get_main_queue(), ^{//your code here//}); I believe it should solve your problem. — Tcharni, Mar 11 '14 at 07:48
You could use CCDirector library in your login view, and you will play a video with cocos2d in your LoginView. I use it in a lot of projects and it works very nice — Fran Martin, Mar 11 '14 at 07:57
@Tcharni dispatch_async(dispatch_get_main_queue() did not work - still nothing happens. — Erik Sapir, Mar 11 '14 at 08:01
@SonGoku68 So what you saying is that you use a single controller with two views? — Erik Sapir, Mar 11 '14 at 08:01
Yes, use your loginViewController for to load in a view CCGLView the video. This view(CCGLView class) should be in front of all views in your LoginViewController. I will answer you with my solution — Fran Martin, Mar 11 '14 at 08:06

score 1 · Answer 1 · answered Mar 11 '14 at 08:08

A possible way to do this would be to reverse the viewController hierarchy.

Start off with the loginViewController, and have a flag that determines whether it is the first login. If that is the case, then have an introVideoViewController presented over the loginViewController with the loginViewController as its delegate.
Place the code to initiate and present your introVideoViewController in the viewDidLoad of loginViewController, so it appears that the app has directly started in the introVideoViewController
With MPMoviePlayerPlaybackDidFinishNotification, perform something like: [self.delegate introVideoDidFinishPlaying];. This will transfer control back to loginViewController, which can then dismiss the presentedViewController.

I'm not familiar how to do it with storyboards, but this approach definitely works with nibs.

It actually sounds good. Would i be able to use animation - i would like to dismiss the video with fade out effect — Erik Sapir, Mar 11 '14 at 08:15
Yes of course. Although you may have to modify the code to include UIView animations. This question gives a brief overview on block UIView animation statements: http://stackoverflow.com/questions/3126833/what-are-block-based-animation-methods-in-iphone-os-4-0 — Tcharni, Mar 11 '14 at 08:18

score 1 · Answer 2 · answered Mar 11 '14 at 08:15

As I commented, in your .h file of your loginViewController...

#import <UIKit/UIKit.h>
#import "cocos2d.h"
#import "cocos2d.h"

@interface VPViewController : UIViewController<CCDirectorDelegate>

@property (nonatomic, strong) IBOutlet CCGLView *glView;

In your .m loginViewController...

@synthesize glView=glView_;

In your viewDidLoad method

CGRect glViewFrame = self.glView.frame;
CGRect screenBounds = [[UIScreen mainScreen] bounds];
if (screenBounds.size.height == IPHONE_5_SCREEN_SIZE) {
    glViewFrame.size.height = 578;
}else{
    glViewFrame.size.height = 490;
}
[self.glView setFrame:glViewFrame];

CCDirector *director = [CCDirector sharedDirector];
[director setDisplayStats:NO];
[director setView:glView_];

// Enables High Res mode (Retina Display) on iPhone 4 and maintains low res on all other devices
if( ! [director enableRetinaDisplay:YES] )
    CCLOG(@"Retina Display Not supported");

// turn on multiple touches
[glView_ setMultipleTouchEnabled:YES];

CCScene *scene = [CCScene node];
glClearColor(0,0,0,0);

[scene setRotation:90.0f];

if([director enableRetinaDisplay:YES] && [self returnMaxTextureSize] == 2048){

    // this is a device with 2.0 scale factor and a max texture size of 2048 pixels
    NSLog(@"2048 only");
    [scene setScale:2.0f];

}else{

    [scene setScale:1.5f];

}

CCSprite * bg = [CCSprite spriteWithFile:@"login_background_white.png"];
[bg setRotation:-90.0f];
[bg setScale:0.8f];
[bg setPosition:ccp(155, 270)];
[scene addChild:bg z:-1];

[scene addChild: [VPAnimation node]];

[director pushScene:scene];
[director startAnimation];

And finally, in your xib...

enter image description here

Showing a video in welcome screen before moving to login screen

2 Answers2