AVAudioPlayer. avtouch Application

AVAudioPlayer avtouch Application iphone Application Index 1. iphone Application 1) iphone Application 2) iphone Application Main Method 3) iphone Application nib(.xib) 2. avtouch Application 1) avtouch 2) avtouch Classes & Resources 3) avtouchappdelegate 4) avtouchviewcontroller 5) avtouchcontroller 1) nib(.xib) 2) 3) 4) 5) / 6) / 7) 8) 9) 10)

iphone Application 1. iphone Application 2. iphone OS Application 3. 4. main() 5. Primary thread 6. UIApplicationMain() 7. UIApplication 8. info.plist 9. MainWindow.xib 10. xib iphone Application Main Method #import <UIKit/UIKit.h> nil Info.plist xib MainWindow.xib xib File s Owner UIApplication. int main(int argc, char *argv[]) NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; int retval = UIApplicationMain(argc, argv, nil, nil); // argc, argv C main // nil : // nil : [pool release]; return retval; nil UIApplicationMain() > MainWindow.xib > avtouch App Delegate. iphone UI UI ( iphone main UIApplicationMain )

iphone Application nib(.xib) iphone Application main UIApplicationMain nib(.xib) : File s Owner, First Responder, avtouch App Delegate, Window UIApplicationMain UIApplication File s Owner = UIApplication nib MainWindow.xib UIApplication MainWindow.xib File s Owner. UIApplication. avtouch Application Application avtouch / /

avtouch ClassesClasses & Resources avtouch & Resources AudioViews : avtouchappdelegate : avtouch avtouchviewcontroller : avtouch avtouchcontroller : avtouch main.m : avtouch audio main : avtouch images : avtouch avtouchviewcontroller.xib : avtouch MainWindow.xib : avtouch xib Info.plist : MainWindow.xib AudioToolbox : AVFoundation : AVAudioPlayer avtouchviewcontroller UI UI avtouchviewcontroller UISlider *progressbar; UILabel *filename; UILabel *currenttime; UILabel *duration; CALevelMeter *lvlmeter_in; UILabel UISlider *repeatfrom; UIButton *volumeslider; UILabel UIButton *rewbutton; UIButton UIButton *playbutton; *ffwbutton; *repeatbtn; *repeatto;

avtouch iphone Application 1. File > New Project iphone OS > Application View-based Application.

iphone Application 2. avtouchappdelegate, avtouchviewcontroller (header, implement ). - avtouchappdelegate :, xib,,. - avtouchviewcontroller :. * avtouch2 avtouch. avtouchappdelegate avtouch MainWindow.xib avtouchviewcontroller viewcontroller avtouchappdelegate.h avtouchappdelegate.m #import <UIKit/UIKit.h> @class avtouchviewcontroller; @interface avtouchappdelegate : NSObject <UIApplicationDelegate> IBOutlet UIWindow *window; // viewcontroller IBOutlet avtouchviewcontroller *viewcontroller; @property (nonatomic, retain) IBOutlet UIWindow *window; @property (nonatomic, retain) IBOutlet avtouchviewcontroller *viewcontroller; @end #import "avtouchappdelegate.h" #import "avtouchviewcontroller.h" @implementation avtouchappdelegate @synthesize window; @synthesize viewcontroller; - (void)applicationdidfinishlaunching:(uiapplication *)application // viewcontroller mainwindow [window addsubview:viewcontroller.view]; [window makekeyandvisible]; - (void)dealloc [viewcontroller release]; [window release]; [super dealloc]; @end

avtouchviewcontroller avtouchappdelegate avtouch avtouchcontroller controller avtouchviewcontroller.h avtouchviewcontroller.m #import <UIKit/UIKit.h> @class avtouchcontroller; @interface avtouchviewcontroller : UIViewController IBOutlet avtouchcontroller *controller; @end #import "avtouchviewcontroller.h" #import "avtouchcontroller.h" @implementation avtouchviewcontroller - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation) interfaceorientation // Return YES for supported orientations return (interfaceorientation == UIInterfaceOrientationPortrait); - (void)didreceivememorywarning [super didreceivememorywarning]; // Releases the view if it doesn't have a superview // Release anything that's not essential, such as cached data - (void)dealloc [super dealloc]; @end iphone Application * avtouchappdelegate.m applicationdidfinishlaunching - ios 4.0. void BOOL return YES;.. - (void)applicationdidfinishlaunching:(uiapplication *)application // Override point for customization after app launch [window addsubview:viewcontroller.view]; [window makekeyandvisible]; ios 3.0 - (BOOL)application:(UIApplication *)application didfinishlaunchingwithoptions:(nsdictionary *)launchoptions // Override point for customization after application launch. // Add the view controller's view to the window and display. [window addsubview:viewcontroller.view]; [window makekeyandvisible]; ios 4.0 return YES;

iphone Application * avtouch,. Frameworks (control + ) Add > Existing Frameworks Add. ( command ) - AudioToolbox.framework : - AVFoundation.framework : - QuartzCore.framework : - OpenGLES.framework : iphone Application xib * Resource avtouchviewcontroller.xib MainWindow.xib. View-based ViewController xib. - MainWindow.xib - avtouchviewcontroller.xib * MainWindow.xib, iphone MVC,,.

iphone MainWindow.xib Application MainWindow.xib. @interface avtouch2appdelegate : NSObject <UIApplicationDelegate> UIWindow *window; avtouch2viewcontroller *viewcontroller; @property (nonatomic, retain) IBOutlet UIWindow *window; @property (nonatomic, retain) IBOutlet avtouch2viewcontroller *viewcontroller; avtouchappdelegate.h [window addsubview:viewcontroller.view]; avtouchappdelegate.m avtouchappdelegate? avtouchviewcontroller viewcontroller, IBOutlet. IBOutlet Interface Builder Outlet, (.xip ) GUI. MainWindow.xib avtouchviewcontroller. avtouchviewcontroller. iphone avtouchcontroller Application 3. avtouchcontroller, avtouchviewcontroller.h. - File > New File iphone OS Cocoa Touch Class > Objective-C class (Subclass of NSObject) Next, avtouchcontroller Finish.

iphone avtouchcontroller Application 3. avtouchcontroller, avtouchviewcontroller.h. - Class avtouchcontroller. - avtouchviewcontroller.h avtouchcontroller controller IBOutlet. avtouchviewcontroller.xib avcontroller. #import <UIKit/UIKit.h> @class avtouchcontroller; @interface avtouch2viewcontroller : UIViewController IBOutlet avtouchcontroller *controller; @end avtouchviewcontroller.h... #import "avtouchcontroller.h"... avtouchviewcontroller.m avtouchviewcontroller.xib iphone Application 4. controller. avtouchviewcontroller.xib Tools > Inspector Library. Inspector Library. Library. avtouchcontroller. UISlider *progressbar; UILabel *filename; UILabel *currenttime; UILabel *duration; CALevelMeter *lvlmeter_in; UILabel *repeatfrom; UIButton *repeatbtn; UISlider *volumeslider; UILabel *repeatto; UIButton *rewbutton; UIButton *ffwbutton; UIButton *playbutton;

iphone avtouchcontroller.h Application 4.., xib,,. AppDelegate ViewController. import. #import <UIKit/UIKit.h> #import <AudioToolbox/AudioToolbox.h> #import <AVFoundation/AVFoundation.h>. IBOutlet UILabel *filename; IBOutlet UIButton *playbutton; IBOutlet UIButton *ffwbutton; IBOutlet UIButton *rewbutton; IBOutlet UISlider *volumeslider; IBOutlet UISlider *progressbar; IBOutlet UILabel *currenttime; IBOutlet UILabel *duration; IBOutlet UILabel *repeatfrom; IBOutlet UILabel *repeatto; IBOutlet UIButton *repeatbtn; IBOutlet CALevelMeter *lvlmeter_in; AVAudioPlayer *player; UIImage *playbtnbg; UIImage *pausebtnbg; NSTimer *updatetimer; NSTimer *rewtimer; NSTimer *ffwtimer; NSMutableArray *soundfiles; NSTimeInterval repeata,repeatb; kselectstate repeatstate; - (IBAction)playButtonPressed:(UIButton*)sender; // - (IBAction)rewButtonPressed:(UIButton*)sender; // - (IBAction)rewButtonReleased:(UIButton*)sender; // - (IBAction)ffwButtonPressed:(UIButton*)sender; // - (IBAction)ffwButtonReleased:(UIButton*)sender; // - (IBAction)volumeSliderMoved:(UISlider*)sender; // - (IBAction)progressSliderMoved:(UISlider*)sender; // - (IBAction)onRepeat; // avtouchcontroller.h avtouch, AudioToolbox, AVFoundation import #import <UIKit/UIKit.h> #import <AudioToolbox/AudioToolbox.h> #import <AVFoundation/AVFoundation.h> // typedef enum TimeNone=0,TimeFromSelected,TimeToSelected kselectstate; avtouchcontroller.h NSObject @interface avtouchcontroller : NSObject <UIPickerViewDelegate, AVAudioPlayerDelegate> // IB IBOutlet UILabel *filename; IBOutlet UIButton *playbutton;... // UI - (IBAction)playButtonPressed:(UIButton*)sender; - (IBAction)rewButtonPressed:(UIButton*)sender;... @property (nonatomic, retain)uilabel @property (nonatomic, retain)uibutton... @end *filename; *playbutton; value @property @property value setter/getter

xib iphone Application nib(.xib) avtouchcontroller. /, /,,,. avtouch.. - xib - - - 5., View Controller controller,. awakefromnib,.

nib(.xib) awakefromnib : AVAudioPlayer UI,, - (void)awakefromnib // AVAudioPlayer soundfiles = [[NSMutableArray alloc] initwithcapacity:3]; avtouchcontroller.mm playbtnbg = [[UIImage imagenamed:@"play.png"] retain]; pausebtnbg = [[UIImage imagenamed:@"pause.png"] retain]; [playbutton setimage:playbtnbg forstate:uicontrolstatenormal]; // updatetimer = nil; rewtimer = nil; AVAudioPlayer fileurl ffwtimer = nil;... // NSURL *fileurl = [[NSURL alloc] initfileurlwithpath: [[NSBundle mainbundle] pathforresource:@"mu02" oftype:@"mp3"]]; self.player = [[AVAudioPlayer alloc] initwithcontentsofurl:fileurl error:nil]; if (self.player) //, filename.text = [NSString stringwithformat: @"%@ (%d ch.)", [[player.url relativepath] lastpathcomponent], player.numberofchannels, nil]; [self updateviewforplayerinfo:player]; // [self updateviewforplayerstate:player]; // / player.numberofloops = 1; // player.delegate = self; // OSStatus result = AudioSessionInitialize(NULL, NULL, NULL, NULL); //... [fileurl release]; iphone Application 6.. 1, /. :,. currenttime.text = [NSString stringwithformat:@"%d:%02d", (int)p.currenttime / 60, (int)p.currenttime % 60, nil]; progressbar.value = p.currenttime; //progressbar,.. if (p.playing) // [playbutton setimage:((p.playing == YES)? pausebtnbg : playbtnbg) forstate:uicontrolstatenormal]; [lvlmeter_in setplayer:p]; updatetimer = [NSTimer scheduledtimerwithtimeinterval:.01 target:self selector:@selector(updatecurrenttime) userinfo:p repeats:yes]; else // [playbutton setimage:((p.playing == YES)? pausebtnbg : playbtnbg) forstate:uicontrolstatenormal]; [lvlmeter_in setplayer:nil]; updatetimer = nil;

: - avtouchcontroller.mm // -(void)updatecurrenttimeforplayer:(avaudioplayer *)p // ( : ) currenttime.text = [NSString stringwithformat:@"%d:%02d", (int)p.currenttime / 60, (int)p.currenttime % 60, nil]; progressbar.value = p.currenttime; //progressbar // / - (void)updateviewforplayerstate:(avaudioplayer *)p [self updatecurrenttimeforplayer:p]; if (updatetimer) [updatetimer invalidate]; if (p.playing) // [playbutton setimage:((p.playing == YES)? pausebtnbg : playbtnbg) forstate:uicontrolstatenormal]; [lvlmeter_in setplayer:p]; updatetimer = [NSTimer scheduledtimerwithtimeinterval:.01 target:self selector:@selector(updatecurrenttime) userinfo:p repeats:yes]; else // [playbutton setimage:((p.playing == YES)? pausebtnbg : playbtnbg) forstate:uicontrolstatenormal]; [lvlmeter_in setplayer:nil]; updatetimer = nil; 7., iphone. void RouteChangeListener( void * inclientdata, AudioSessionPropertyIDinID, UInt32 indatasize, const void * indata) avtouchcontroller* This = (avtouchcontroller*)inclientdata; if (inid == kaudiosessionproperty_audioroutechange) CFDictionaryRef routedict = (CFDictionaryRef)inData; NSNumber* reasonvalue = (NSNumber*)CFDictionaryGetValue (routedict, CFSTR(kAudioSession_AudioRouteChangeKey_Reason)); int reason = [reasonvalue intvalue]; if (reason == kaudiosessionroutechangereason_olddeviceunavailable) [This pauseplaybackforplayer:this.player]; avtouchcontroller.mm

8. avtouch :,. //. - (void)audioplayerdidfinishplaying:(avaudioplayer *)p successfully:(bool)flag avtouchcontroller.mm if (flag == NO) NSLog(@"Playback finished unsuccessfully"); [p setcurrenttime:0.]; [self updateviewforplayerstate:p]; p, flag yes, no //. - (void)audioplayerdecodeerrordidoccur:(avaudioplayer *)p error:(nserror *)error NSLog(@"ERROR IN DECODE: %@\n", error); // - (void)audioplayerbegininterruption:(avaudioplayer *)p NSLog(@"Interruption begin. Updating UI for new state"); // the object has already been paused, we just need to update UI [self updateviewforplayerstate:p]; // - (void)audioplayerendinterruption:(avaudioplayer *)p NSLog(@"Interruption ended. Resuming playback"); [self startplaybackforplayer:p]; p, error p p / /

iphone / Application. 9. / IBAction.,. if (player.playing == YES) [self pauseplaybackforplayer: player]; else [self startplaybackforplayer: player];,. -(void)pauseplaybackforplayer:(avaudioplayer*)p -(void)startplaybackforplayer:(avaudioplayer*)p < > < > / / : -, - // - (IBAction)playButtonPressed:(UIButton *)sender if (player.playing == YES) // [self pauseplaybackforplayer: player]; // else [self startplaybackforplayer: player]; // avtouchcontroller.mm // -(void)pauseplaybackforplayer:(avaudioplayer*)p [p pause]; [self updateviewforplayerstate:p]; // -(void)startplaybackforplayer:(avaudioplayer*)p if ([p play]) [self updateviewforplayerstate:p]; else NSLog(@"Could not play %@\n", p.url); / p player

/ (playbuttonpressed ) startplaybackforplayer / pauseplaybackforplayer updateviewforplayerstate updatecurrenttimeforplayer avtouchappdelegate avtouchcontroller applicationdidfinishlaunching: awakefromnib RouteChangeListener viewcontroller : window soundfiles : fileurl :,, dealloc: viewcontroller, window release player : AVAudioPlayer playbuttonpressed: player player startplaybackforplayer: pauseplaybackforplayer: updateviewforplayerinfo: p p avtouchviewcontroller updateviewforplayerstate: Controller : UI updatecurrenttimeforplayer: updatecurrenttime iphone / Application 10. /. / IBAction. rewtimer =[NSTimer scheduledtimerwithtimeinterval:skip_interval target:self selector:@selector(rewind) userinfo:player repeats:yes]; rewtimer = nil; rewtimer =[NSTimer scheduledtimerwithtimeinterval:skip_interval target:self selector:@selector(ffwd) userinfo:player repeats:yes]; rewtimer = nil; /. - (void)rewind - (void)ffwd < / >

/ / : / /, nil avtouchcontroller.mm // - (IBAction)rewButtonPressed:(UIButton *)sender if (rewtimer) [rewtimer invalidate]; rewtimer = [NSTimer scheduledtimerwithtimeinterval:skip_interval target:self selector:@selector(rewind) userinfo:player repeats:yes]; // - (IBAction)rewButtonReleased:(UIButton *)sender if (rewtimer) [rewtimer invalidate]; rewtimer = nil; // - (void)rewind AVAudioPlayer *p = rewtimer.userinfo; p.currenttime-= SKIP_TIME; [self updatecurrenttimeforplayer:p]; // - (IBAction)ffwButtonPressed:(UIButton *)sender if (ffwtimer) [ffwtimer invalidate]; ffwtimer = [NSTimer scheduledtimerwithtimeinterval:skip_interval target:self selector:@selector(ffwd) userinfo:player repeats:yes]; // - (IBAction)ffwButtonReleased:(UIButton *)sender if (ffwtimer) [ffwtimer invalidate]; ffwtimer = nil; // - (void)ffwd AVAudioPlayer *p = ffwtimer.userinfo; p.currenttime+= SKIP_TIME; [self updatecurrenttimeforplayer:p]; / / (rewbuttonpressed/ffwbuttonpressed ) -rewtimer / -ffwtimer -rewind / -ffwd updatecurrenttimeforplayer avtouchappdelegate avtouchcontroller applicationdidfinishlaunching: awakefromnib RouteChangeListener viewcontroller : window soundfiles : fileurl :,, ffwbuttonreleased: ffwbuttonpressed: dealloc: viewcontroller, window release player : AVAudioPlayer rewbuttonpressed: rewtimer rewbuttonreleased: updateviewforplayerinfo: player nil ffwtimer avtouchviewcontroller updateviewforplayerstate: p rewind: player nil Controller : UI updatecurrenttimeforplayer: updatecurrenttime p ffwd:

iphone Application 11. IBAction. volume. player.volume = [sender value]; < > // volumeslider player volume sender - (IBAction)volumeSliderMoved:(UISlider *)sender player.volume = [sender value]; avtouchcontroller.mm (volumeslidermoved ) player avtouchappdelegate avtouchcontroller applicationdidfinishlaunching: awakefromnib RouteChangeListener viewcontroller : window soundfiles : fileurl :,, dealloc: viewcontroller, window release player : AVAudioPlayer volumeslidermoved: avtouchviewcontroller Controller : UI updateviewforplayerinfo: updateviewforplayerstate: updatecurrenttimeforplayer: updatecurrenttime

iphone Application 12. IBAction.. player.currenttime = sender.value; [self updatecurrenttimeforplayer:player]; < > // progressslider player currenttime sender - (IBAction)progressSliderMoved:(UISlider *)sender player.currenttime = sender.value; [self updatecurrenttimeforplayer:player]; (progressslidermoved ) avtouchcontroller.mm player updatecurrenttimeforplayer avtouchappdelegate avtouchcontroller applicationdidfinishlaunching: awakefromnib RouteChangeListener viewcontroller : window soundfiles : fileurl :,, dealloc: viewcontroller, window release player : AVAudioPlayer progressslidermoved: avtouchviewcontroller updateviewforplayerinfo: updateviewforplayerstate: player Controller : UI updatecurrenttimeforplayer: updatecurrenttime

iphone Application 13. (from~to). from, to, reset IBAction. avtouchcontroller.h kselectstate.. typedef enum TimeNone=0, TimeFromSelected, TimeToSelected kselectstate; onrepeat. if (repeatstate == TimeNone) From else if (repeatstate == TimeFromSelected) to else reset if (repeatstate == TimeToSelected && player.currenttime >= repeatb) < > : (from~to) avtouchcontroller.mm - (IBAction)onRepeat if (repeatstate == TimeNone) // A.. From repeata repeata = player.currenttime; [repeatfrom settext:[nsstring stringwithformat:@"from : %.2d:%.2d",((int)repeatA / 60), ((int)repeata%60)]]; [repeatto settext:@"to : "]; [repeatbtn settitle:@"repeat to" forstate:uicontrolstatenormal]; [repeatbtn settitle:@"repeat to" forstate:uicontrolstatehighlighted]; repeatstate = TimeFromSelected; else if (repeatstate == TimeFromSelected) // B. To repeatb = player.currenttime; [repeatto settext:[nsstring stringwithformat:@"to : %.2d:%.2d",((int)repeatB / 60), ((int)repeatb%60)]]; [repeatbtn settitle:@"reset repeat" forstate:uicontrolstatenormal]; [repeatbtn settitle:@"reset repeat" forstate:uicontrolstatehighlighted]; repeatstate = TimeToSelected; else // [repeatto settext:@"to : "]; [repeatfrom settext:@"from : "]; [repeatbtn settitle:@"repeat from" forstate:uicontrolstatenormal]; [repeatbtn settitle:@"repeat from" forstate:uicontrolstatehighlighted]; repeatstate = TimeNone; if (repeatstate == TimeToSelected && player.currenttime >= repeatb) player.currenttime = repeata;

(volumeslidermoved ) player avtouchappdelegate avtouchcontroller applicationdidfinishlaunching: awakefromnib RouteChangeListener viewcontroller : window soundfiles : fileurl :,, dealloc: viewcontroller, window release player : AVAudioPlayer onrepeat: player avtouchviewcontroller Controller : UI updateviewforplayerinfo: updateviewforplayerstate: updatecurrenttimeforplayer: updatecurrenttime 14. : release. - (void)dealloc [super dealloc]; [filename release]; [playbutton release]; [ffwbutton release]; [rewbutton release]; [volumeslider release]; [progressbar release]; [currenttime release]; [duration release]; [lvlmeter_in release]; [updatetimer release]; [player release]; [playbtnbg release]; [pausebtnbg release]; avtouchcontroller.mm

Xib - 15.. control Controller Inspector.