I have an app with a splash screen. For the splashscreen I've decided to add a m4v movie. I'm using the MPMoviePlayerController to show the movie. Everything is working as expected except for one thing:
I'm trying to make the MPMoviePlayerController loop by subscribing to it's MPMoviePlayerPlaybackDidFinishNotification notification and issuing a [notification.object play] if the data didn't finish loading.
This works partially, it restarts the movie, but there's the fadeout and re-fadein that make it look bad.
Is there any other way to loop the movie?
Or any way to remove the fades?
Try this single line of code:
myPlayer.repeatMode = MPMovieRepeatModeOne;
:)
By complete coincidence I have just written a blog post on this subject - we ran into this problem while we were writing our latest app :)
Assuming that you don't want to follow my shameless plug, here's how we fixed it :
Make sure that the movie starts
and ends on the same frame.
Make the starting frame the Default.png of the app
On startup add Default.png to the window as a UIImageView
Make the movie have a clear background
Play and loop the movie
When the movie ends, it will fade out before it loops round. As Default.png is exactly the same as the start and end frames, the user will never notice :)
When you want to end the movie just remove the Default.png UIImageView and stop the movie - as the background is clear it will just fade out to whatever ui you have in your window.
Sam
I don't think there is any public option to do this. You could try and inspect Erica Sadun's Class Dumps for a method you can override that would handle the fading. Maybe a videoDidFinish method or something.
Have you tried messing around with the backgroundColor property? Apple's MPMoviePlayerController docs say
"The receiver fades to and from the
background color when transitioning to
and from playback...The default color
for this property is black. You can
change this to other colors (including
clear) to provide a more appropriate
transition from your application’s
content to the movie content."
So, you can probably try setting it to [UIColor clearColor] and seeing if that helps.
Related
I draw some GIS data dynamically, based on user's control, into CGImageRef.
But how to play these frame like an animation efficiently in an UIImageView?
After searching and surveying, the way to play an animation in UIImageView is preloading all images you need,and invoking the startanimating method,like this:
myImageView.animationimages=[NSArray arrayWithObjects:1uiimage,2uiimage,....,nil];
[myImageView startAnimating];
But the waiting time is too long if i preload all UIImages, because i have more than 400 frames each time.
I want to play the animation like a stream,real time stream, how to do that?
Deeply appreciating if you could give me any idea or an example. :)
Use CADisplayLink to get notified on each screen refresh. Change myImageView.image in the callback.
(You might have to do something more clever if you want to limit the framerate.)
i´ve added a MPMoviePlayerViewController instance and playing of a movie works great.
I´ve 3 buttons and want to load different videos in a UIView-container. That works, too.
But if i click on a button to load an other video, everytime the background is flickering black.
I´ve set the color to "clearColor":
player.moviePlayer.backgroundView.backgroundColor = [UIColor clearColor];
But that doesn´t help. Is there a way to load a video without a background - only the video-content?
Thanks for your time.
Not sure about the flickering issue. You said it flickers when you load another video -- Are you unintentionally layering multiple videos on top of each other? Make sure you remove the old one!
The black background likely is because your
MPMoviePlayerController's
scalingMode property is set to MPMovieScalingModeAspectFit (Apple's Documentation:
MPMoviePlayerController
scalingMode)
For issue #2, like you, I had expected setting the backgroundView's color to handle this, however it seems there is another view behind that which you also need to set the backgroundColor to clearColor. My hack for this was to simply iterate through the movie player's subviews and set their backgroundColor to clear.
Hack/"Solution" example using your variable name:
for(UIView* subV in player.moviePlayer.view.subviews) {
subV.backgroundColor = [UIColor clearColor];
}
You have to re-apply clearColor to the subviews any time you enter/exit fullscreen mode as well. I hope someone else has a better solution because this method seems pretty kludgy.
another option is to hide the video player and then show it when it is ready to display
caveat needs IO6>= i believe:
https://stackoverflow.com/a/19459855/401896
I want to use AVAudioPlayer to play short sounds... because I have more control than System Sound.
I have several buttons which are hooked up to play several different short sounds.
Each sound file is about 1.5 - 2.0 seconds.
Everything works fine ...except ...I have to wait for the sound to stop before I can press the button and the sound will play again.
Currently the individual AVAudioPlayers are created on viewDidLoad ... and the sounds are called to play when the buttons are pressed
I tried creating the players when the button is pressed... this solves the above problem... but after a while the app crashes... all sound stops working.
Any ideas?
Thanks
Jonathan
If AVAudioPlayer stops playing sounds, it is usually because there are too many player instances created, usually leaked. You should make sure you release some after you are done.
You need to set the currentTime of the player to 0 before playing. Calling [player play] when it is already playing has no effect.
player.currentTime = 0;
[player play];
Creating new ones is fine, but make sure your header declares and does this:
- (void) audioPlayerDidFinishPlaying: (AVAudioPlayer *) player successfully: (BOOL) completed {
[player release];
}
if your app is simple, that will release the memory of anything done that's no longer necessary, as per mahboudz' suggestion.
This might not totally prevent crashing, depending on your sound file sizes, and if you dealloc the scene. You might want to add
if (self.view.superview) { //release }
or something.
This is all memory handling. You may want to brush up on pointers to know how to handle your player objects, literally within any function, and still feel comfortable placing release in dealloc OR the didFinish: delegate function, and know why it doesn't belong in the other one.
The iPhone can be interrupted, stopped, and messed with at any time, so you have to know how to handle the memory and how to deal with it when it happens. I just had a crash of a similar nature, and everything above applied to it. NSXML delegates would be a nightmare without knowing pointers... same for AVAudioPlayer
If you plan to use a lof of short sounds, you might want to think about switching to OpenAL.
It's not a lot more complicated and you will save yourselve some trouble in more complicated audio settings later on.
There's a tutorial and some useful code available here (archived here).
this is MAYBE because you have created the AVAudioPlayers inside the viewDidLoad(). I remember I had the same problem. Just initialize them inside the class but not there. hope it works!
EDIT:
ok i saw the date... 2009...
I am streaming an MP3 file using MPMoviePlayer, and I would like to have an image displayed instead of the default Quicktime logo in the background.
I found out a way to have an image overlay the player, but the problem with that, is you have to tap outside the image to get the player controls to appear. And when they do appear, they are underneath the image.
Does someone know how to do this?
Thanks,
John
backgroundColor is deprecated, and diving into private View structures is dangerous. This worked fine for me:
UIImageView *coverImageView = [[UIImageView alloc] initWithImage:coverImage];
coverImageView.contentMode = UIViewContentModeScaleAspectFit;
coverImageView.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight;
coverImageView.frame = moviePlayerController.view.bounds;
[moviePlayerController.view addSubview:coverImageView];
Most every app on the iPhone is made of a hierarchy of views. You could go up to the top root node of the movie player and walk down the child views recursively and set the hidden value to YES until you find the right item, then insert your UIImageView below that item. That way, the controls stay on top and still respond to user inputs.
The risk you run is if Apple changes the MPMoviePlayer UI and shuffles the view hierarchy, but you'll probably have lots of advance notice and can patch your app to allow for the new layout.
There is a question as to whether this is kosher for appstore apps, but many current apps (especially camera/picture-taking ones) are doing it to get rid of standard window elements.
Use AVAudioPlayer and implement your own player UI.
it will work check this
MPMoviePlayerController *moviePlayerController=[[MPMoviePlayerController alloc] initWithContentURL:theURL];
moviePlayerController.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:#"Default.png"]];
In my program labels didnt detect touches while i testig on simulator. but it works fine on device. why does this happens?. i want to capture the video of my application when working on simulator.
If you need a quick workaround for recording video, just put a clear UIButton over top of the label that calls the same function upon tap.