Audio and video playback

File structure

Application

//

#import "ViewController.h"

#import "VideoViewController.h"

#import "MovieViewController.h"

@interface Viewcontroller ()

{

To set a Class View controller as a global variable

Videoviewcontroller *_VIDEOVC;

Movieviewcontroller *_MOVIEVC;

}

-(Ibaction) Doplayaudiobutton: (ID) sender;

-(Ibaction) Doplaymoviebutton: (ID) sender;

@end

@implementation Viewcontroller

-(void) Viewdidload {

[Super Viewdidload];

Additional setup after loading the view, typically from a nib.

}

-(void) didreceivememorywarning {

[Super didreceivememorywarning];

Dispose of any resources the can be recreated.

}

Click to enter the audio page

-(Ibaction) Doplayaudiobutton: (ID) Sender {

Determines whether the view controller exists and initializes if it does not exist.

if (!_VIDEOVC) {

_videovc=[[videoviewcontroller Alloc]init];

}

Set the _VIDEOVC control view to the page that will be entered

[Self.navigationcontroller PUSHVIEWCONTROLLER:_VIDEOVC animated:yes];//yes with animated effect

}

Click to enter the video page

-(Ibaction) Doplaymoviebutton: (ID) Sender {

if (!_MOVIEVC) {

_movievc=[[movieviewcontroller Alloc]init];

}

[Self.navigationcontroller PUSHVIEWCONTROLLER:_MOVIEVC Animated:yes];

}

@end

//

#import "ViewController.h"

#import "VideoViewController.h"

#import "MovieViewController.h"

@interface Viewcontroller ()

{

To set a Class View controller as a global variable

Videoviewcontroller *_VIDEOVC;

Movieviewcontroller *_MOVIEVC;

}

-(Ibaction) Doplayaudiobutton: (ID) sender;

-(Ibaction) Doplaymoviebutton: (ID) sender;

@end

@implementation Viewcontroller

-(void) Viewdidload {

[Super Viewdidload];

Additional setup after loading the view, typically from a nib.

}

-(void) didreceivememorywarning {

[Super didreceivememorywarning];

Dispose of any resources the can be recreated.

}

Click to enter the audio page

-(Ibaction) Doplayaudiobutton: (ID) Sender {

Determines whether the view controller exists and initializes if it does not exist.

if (!_VIDEOVC) {

_videovc=[[videoviewcontroller Alloc]init];

}

Set the _VIDEOVC control view to the page that will be entered

[Self.navigationcontroller PUSHVIEWCONTROLLER:_VIDEOVC animated:yes];//yes with animated effect

}

Click to enter the video page

-(Ibaction) Doplaymoviebutton: (ID) Sender {

if (!_MOVIEVC) {

_movievc=[[movieviewcontroller Alloc]init];

}

[Self.navigationcontroller PUSHVIEWCONTROLLER:_MOVIEVC Animated:yes];

}

@end//

#import "ViewController.h"

#import "VideoViewController.h"

#import "MovieViewController.h"

@interface Viewcontroller ()

{

To set a Class View controller as a global variable

Videoviewcontroller *_VIDEOVC;

Movieviewcontroller *_MOVIEVC;

}

-(Ibaction) Doplayaudiobutton: (ID) sender;

-(Ibaction) Doplaymoviebutton: (ID) sender;

@end

@implementation Viewcontroller

-(void) Viewdidload {

[Super Viewdidload];

Additional setup after loading the view, typically from a nib.

}

-(void) didreceivememorywarning {

[Super didreceivememorywarning];

Dispose of any resources the can be recreated.

}

Click to enter the audio page

-(Ibaction) Doplayaudiobutton: (ID) Sender {

Determines whether the view controller exists and initializes if it does not exist.

if (!_VIDEOVC) {

_videovc=[[videoviewcontroller Alloc]init];

}

Set the _VIDEOVC control view to the page that will be entered

[Self.navigationcontroller PUSHVIEWCONTROLLER:_VIDEOVC animated:yes];//yes with animated effect

}

Click to enter the video page

-(Ibaction) Doplaymoviebutton: (ID) Sender {

if (!_MOVIEVC) {

_movievc=[[movieviewcontroller Alloc]init];

}

[Self.navigationcontroller PUSHVIEWCONTROLLER:_MOVIEVC Animated:yes];

}

@end

Audio

//

#import "VideoViewController.h"

#import <AVFoundation/AVFoundation.h>

@interface Videoviewcontroller ()

{

Avaudioplayer *_player;//playing the file class

}

/*

iOS supported audio formats: Mp3,aac,alac,ima4,linear (WMA?)

*/

@end

@implementation Videoviewcontroller

-(void) Viewdidload {

[Super Viewdidload];

[Email protected] "audio";

Get Audio Path

NSString *musicpath=[[nsbundle mainbundle]pathforresource:@ "Simple Love" oftype:@ "MP3"];

Establish a Connection object (Nsurl do the class used for the link)

Nsurl *url=[[nsurl Alloc]initfileurlwithpath:musicpath];

Nserror *error=nil;

_player=[[avaudioplayer Alloc]

Initwithcontentsofurl:url error:&error];//and Initwithdata.

[_player preparetoplay];//ready to play (start loading the audio file to make sure the player starts playing as soon as possible)

if (Error) {

NSLog (@ "error message:%@," [Error localizeddescription]);

}

NSLog (@ "1");

}

-(void) Viewwillappear: (BOOL) animated{

NSLog (@ "2");

}

-(void) didreceivememorywarning {

[Super didreceivememorywarning];

Dispose of any resources the can be recreated.

}

-(Ibaction) Doplaybutton: (ID) Sender {

[_player play];

}

-(Ibaction) Dopausebutton: (ID) Sender {

[_player pause];//Pause

[_player stop];//stop

/* Stops playback. No longer ready to play. */

_player.currenttime=0;//from the beginning.

/* Returns the current time associated with the output device */

}

-(Ibaction) Dogo5button: (ID) Sender {

if (_player.currenttime<=_player.duration-5) {

_player.currenttime+=5;//current time changed to five seconds

}

}

-(Ibaction) Doback5button: (ID) Sender {

if (_player.currenttime>=5) {

_player.currenttime-=5;

}

}

Volume

-(Ibaction) Dochangevoice: (UISlider *) Sender {

_player.volume=sender.value;

}

@end

Video

#import "MovieViewController.h"

#import <MediaPlayer/MediaPlayer.h>

@interface Movieviewcontroller ()

{

Mpmovieplayerviewcontroller *_player;

}

@end

@implementation Movieviewcontroller

-(void) Viewdidload {

[Super Viewdidload];

[Email protected] "video";

self.navigationcontroller.navigationbarhidden=yes;//Hide Navigation Bar

NSString *moviepath=[[nsbundle mainbundle]pathforresource:@ "Hulala" oftype:@ "mp4"];

Establish a Connection object (Nsurl do the class used for the link)

Nsurl *url=[[nsurl Alloc]initfileurlwithpath:moviepath];

Nserror *error=nil;

_player=[[mpmovieplayerviewcontroller Alloc]initwithcontenturl:url];

if (Error) {

NSLog (@ "error message:%@," [Error localizeddescription]);

}

[_player.movieplayer Setscalingmode:mpmoviescalingmodeaspectfit];

/*

Mpmoviescalingmodenone//Do not scale video

Mpmoviescalingmodeaspectfit,//Video Scaling 4:3

Mpmoviescalingmodeaspectfill,//Zoom to outer frame, 4:3 size hides part

Mpmoviescalingmodefill//video stretching loses original proportions

*/

[_player.movieplayer setcontrolstyle:mpmoviecontrolstylefullscreen];//Full Screen

/* Mpmoviecontrolstylenone,//No controls

mpmoviecontrolstyleembedded,//Controls for an embedded view

Mpmoviecontrolstylefullscreen,//Controls for fullscreen playback

Mpmoviecontrolstyledefault = mpmoviecontrolstyleembedded

*/

[[Nsnotificationcenter defaultcenter]addobserver:self selector: @selector (finshmovieplay) Name: Mpmovieplayerplaybackdidfinishnotification Object:nil];

NSLog (@ "1");

}

-(void) Viewwillappear: (BOOL) animated{

[Self.view Addsubview:_player.view];

}

-(void) Finshmovieplay

{

Self.navigationcontroller.navigationbarhidden=no;

[Self.navigationcontroller Poptorootviewcontrolleranimated:yes];

}

-(void) didreceivememorywarning {

[Super didreceivememorywarning];

Dispose of any resources the can be recreated.

}

Audio and video playback