IPhone video playback Project Development

IPhone videoPlaying project development is the content to be introduced in this article, I feelIphone videoPlaying has always been a weakness.Iphone videoProject. Everyone should know! After 3.2Iphone videoAdded and added multiple notifications! This is not available before, so there are many more features, I feel this is good!

The following is a step-by-step description.Video:

The following code is displayed:

 
 

  
  
-(Void) playMovieWithSDK: (NSURL *) movieUrl
  
  
{
  
  
If ([[[UIDevice currentDevice] systemVersion] doubleValue]> 3.2)
  
  
{
  
  
Self. view. backgroundColor = [UIColor redColor];
  
  
MSdk4Player = [[MPMoviePlayerViewController alloc] initWithContentURL: movieUrl];
  
  
MSdk4Player. navigationController. navigationBar. tag = 1003;
  
  
[Self. navigationController. navigationBar setNeedsDisplay];
  
  
If (mSdk4Player)
  
  
{
  
  
MSdk4Player. moviePlayer. shouldAutoplay = YES;
  
  
[Self presentMoviePlayerViewControllerAnimated: mSdk4Player];
  
  
MSdk4Player. moviePlayer. scalingMode = MPMovieScalingModeAspectFit;
  
  
[MSdk4Player. moviePlayer play];
  
  
[MSdk4Player release];
  
  
BackgroundIamge = [[UIImageView alloc] initWithFrame: CGRectMake (0, 0, 80, 80)];
  
  
[BackgroundIamge setImage: [UIImage imageNamed: @ "playBg.png"];
  
  
[MSdk4Player. view addSubview: backgroundIamge];
  
  
BackgroundIamge. hidden = YES;
  
  
UIDevice * device = [UIDevice currentDevice];
  
  
If (device. orientation = UIInterfaceOrientationPortrait | device. orientation = UIInterfaceOrientationPortraitUpsideDown)
  
  
{
  
  
BackgroundIamge. center = CGPointMake (160,240 );
  
  
}
  
  
Else if (device. orientation = UIInterfaceOrientationLandscapeLeft | device. orientation = UIInterfaceOrientationLandscapeRight)
  
  
{
  
  
BackgroundIamge. center = CGPointMake (240,160 );
  
  
}
  
  
Else
  
  
{
  
  
BackgroundIamge. center = CGPointMake (160,240 );
  
  
}
  
  
[[Nsicationicationcenter defacenter center]
  
  
AddObserver: self
  
  
Selector: @ selector (movieFinishedCallback :)
  
  
Name: MPMoviePlayerPlaybackDidFinishNotification
  
  
Object: mSdk4Player. moviePlayer];
  
  
[[Nsicationicationcenter defacenter center]
  
  
AddObserver: self
  
  
Selector: @ selector (movieReadyToPlay :)
  
  
Name: MPMovieMediaTypesAvailableNotification
  
  
Object: nil];
  
  
[[Nsicationicationcenter defacenter center]
  
  
AddObserver: self
  
  
Selector: @ selector (addMoviePicture :)
  
  
Name: MPMoviePlayerNowPlayingMovieDidChangeNotification
  
  
Object: nil];
  
  
[[Nsicationicationcenter defacenter center]
  
  
AddObserver: self
  
  
Selector: @ selector (changeAddedPictureSize :)
  
  
Name: UIApplicationWillChangeStatusBarOrientationNotification
  
  
Object: nil];
  
  
}
  
  
// BackgroundIamge. center = CGPointMake (240,160 );
  
  
}
  
  
Else if ([[UIDevice currentDevice] systemVersion] doubleValue] <3.2) // sdk 3.0 player
  
  
{
  
  
MPMoviePlayerController * mSdk3player = [[MPMoviePlayerController alloc] initWithContentURL: movieUrl];
  
  
MSdk3player. scalingMode = MPMovieScalingModeAspectFit;
  
  
[[Nsicationicationcenter defacenter center]
  
  
AddObserver: self
  
  
Selector: @ selector (movieFinishedCallback :)
  
  
Name: MPMoviePlayerPlaybackDidFinishNotification
  
  
Object: mSdk3player];
  
  
[MSdk3player play];
  
  
}
  
  
}
  
  
// Play a movie
  
  
-(Void) playMovie
  
  
{
  
  
NSURL * movieUrl = [NSURL URLWithString: _ movieString];
  
  
If ([movieUrl scheme])
  
  
{
  
  
[Self playMovieWithSDK: movieUrl];
  
  
// Here, the latest movie mentioned above is carried out in the database
  
  
[Self checkHisState];
  
  
[Self setHistory];
  
  
}
  
  
Else
  
  
{
  
  
UIAlertView * alert = [[UIAlertView alloc] initWithTitle: @ "message: @" "delegate: nil cancelButtonTitle: @" o" otherButtonTitles: nil];
  
  
[Alert show];
  
  
[Alert release];
  
  
}
  
  
}
  
  
// Notification to release the player
  
  
-(Void) movieFinishedCallback :( NSNotification *) aNotification
  
  
{
  
  
MPMoviePlayerController * theMovie = [aNotification object];
  
  
[[Nsicationcenter center defacenter center] removeObserver: self
  
  
Name: MPMoviePlayerPlaybackDidFinishNotification
  
  
Object: theMovie];
  
  
_ DetailViewController = [[DetailViewController alloc] initWithNibName: nil bundle: nil messageData: _ message index: index];
  
  
[_ DetailViewController. navigationController. navigationBar setBackgroundImage: [UIImage imageNamed: @ ""];
  
  
[Self. navigationController pushViewController: _ detailViewController animated: NO];
  
  
}
  
  
-(Void) addMoviePicture :( NSNotification *) aNotification
  
  
{
  
  
BackgroundIamge. hidden = NO;
  
  
}
  
  
-(Void) movieReadyToPlay :( NSNotification *) aNotification
  
  
{
  
  
BackgroundIamge. hidden = YES;
  
  
[[Nsicationcenter center defacenter center] removeObserver: self
  
  
Name: MPMovieMediaTypesAvailableNotification
  
  
Object: nil];
  
  
}
  
  
-(Void) changeAddedPictureSize :( NSNotification *) aNotification
  
  
{
  
  
UIDevice * device = [UIDevice currentDevice];
  
  
If (device. orientation = UIInterfaceOrientationPortrait | device. orientation = UIInterfaceOrientationPortraitUpsideDown)
  
  
{
  
  
BackgroundIamge. center = CGPointMake (160,240 );
  
  
}
  
  
Else if (device. orientation = UIInterfaceOrientationLandscapeLeft | device. orientation = UIInterfaceOrientationLandscapeRight)
  
  
{
  
  
BackgroundIamge. center = CGPointMake (240,160 );
  
  
}
  
  
Else
  
  
{
  
  
BackgroundIamge. center = CGPointMake (160,240 );
  
  
}
  
  
}
 
 

Through the above code, I think you shouldIphone videoHave some knowledge about playing! Let me focus on the following points:

1. I added a judgment on the mobile phone version when playing a video. This is because many notifications are unavailable in versions earlier than 3.2.

2. I added a large number of notifications to the code. one by one:

1) [[nsicationicationcenter defacenter center]

 
 

  
  
addObserver: self  
  
  
selector: @selector(movieFinishedCallback:)  
  
  
name: MPMoviePlayerPlaybackDidFinishNotification  
  
  
object: mSdk4Player.moviePlayer]; 
 
 

The above notification is triggered when the video is played, that is, what you want to do when playing the video can be written in the method.

2) [[nsicationicationcenter defacenter center]

 
 

  
  
addObserver: self  
  
  
selector: @selector(movieReadyToPlay:)  
  
  
name: MPMovieMediaTypesAvailableNotification  
  
  
object: nil]; 
 
 

The above notification is triggered when you prepare to play the video.

3) [[nsicationicationcenter defacenter center]

 
 

  
  
addObserver: self  
  
  
selector: @selector(addMoviePicture:)  
  
  
name: MPMoviePlayerNowPlayingMovieDidChangeNotification  
  
  
object: nil]; 
 
 

The above notification is loadingVideoNot playingVideoPreviously triggered.

4) [[nsicationicationcenter defacenter center]

 
 

  
  
addObserver: self  
  
  
selector: @selector(changeAddedPictureSize:)  
  
  
name: UIApplicationWillChangeStatusBarOrientationNotification  
  
  
object: nil]; 
 
 

The above notification is triggered when the device undergoes a gravity conversion.

The above notifications basically satisfy a good and entertaining situation.VideoThe player is ready. You can try it !!

Summary:IPhone videoThe development of the playback project is complete. I hope this article will help you!