"Code Notes" to listen to a story

One.

Two, engineering drawings.

Three, code.

RootViewController.h

#import <UIKit/UIKit.h> #import <AVFoundation/AVFoundation.h> @interface Rootviewcontroller: uiviewcontroller<avaudioplayerdelegate,uiimagepickercontrollerdelegate,uinavigationcontrollerdelegate>{    Uiimageview * Backimageview;    Avaudioplayer *_audioplayer;    Nsmutablearray *musicarray;    Nsmutablearray *titlearray;        int songindex;    UIButton * LeftButton;    UIButton * Rightbutton;        UILabel *titlelabel;    UISlider *slider;    UISlider *volumeslider;    Nstimer * Processtimer;    Nstimer * timer1;    } @end

Rootviewcontroller.m

#import "RootViewController.h" @interface Rootviewcontroller () @end @implementation rootviewcontroller-(void)        viewdidload{[Super Viewdidload];    Self.title = @ "story";    Initialize data [self initdata];    Initialize the background map [self initbackgroundview]; } #pragma-mark-functions//initialization data-(void) initdata{Musicarray=[[nsmutablearray alloc]initwithobjects:@ "7" @ "11" @ "9"    , @ "+", @ "5", @ "6", @ "1", @ "8", @ "@", @ "ten", @ "2", @ "a", @ "4", @ "+", @ "+", @ "+", @ "3", @ "+", nil]; Titlearray=[[nsmutablearray alloc]initwithobjects:@ "Three bulls and Lions" @ "Little Red Riding Hood" @ "Tiannvsanhua" @ "Friends Goodbye" @ "Nu wa made Man" @ "The dumb Water of Tenjin" @ "Little frog listen to the story",    @ "Tao Tao Desire", @ "polite", @ "Ugly duckling", @ "mouse, bird and sausage", @ "two donkeys", @ "Donkey and Master", @ "four friends", @ "prizes", @ "can't pass", @ "five peas" @ "Peter Pan", nil];    }//Initialization background Map-(void) initbackgroundview{self.navigationController.navigationBar.tintColor =[uicolor Orangecolor]; Self.navigationController.navigationBar.tintColor = [Uicolor colorwithred:69.0/255 green:161.0/255 blue:241.0/255            ALPHA:1]; Background backimageview= [[Uiimageview alloc] Initwithframe:cgrectmake (0, 0, 320, 460)]; backimageview.image= [UIImage imagenamed:[nsstring stringwithformat:@ "%@.jpg", [Musicarray Objectatindex:songindex]    ]];            [Self.view Addsubview:backimageview];    Play uibutton* button= [UIButton Buttonwithtype:uibuttontypecustom];    Button.frame=cgrectmake (130, 260, 60, 50);    button.tag=100;    [Button addtarget:self action: @selector (play:) forcontrolevents:uicontroleventtouchupinside];    [Button setimage:[uiimage imagenamed:@ "Play.png"] forstate:uicontrolstatenormal];        [Self.view Addsubview:button];    Previous leftbutton= [UIButton Buttonwithtype:uibuttontypecustom];    Leftbutton.frame=cgrectmake (50, 260, 60, 50);    [LeftButton addtarget:self Action: @selector (Prier) forcontrolevents:uicontroleventtouchupinside];    [LeftButton setimage:[uiimage imagenamed:@ "Left.png"] forstate:uicontrolstatenormal];        [Self.view Addsubview:leftbutton];    Next rightbutton= [UIButton Buttonwithtype:uibuttontypecustom]; Rightbutton.frame=cgrectmake (210, 260, 60, 50);    [Rightbutton addtarget:self Action: @selector (next) forcontrolevents:uicontroleventtouchupinside];    [Rightbutton setimage:[uiimage imagenamed:@ "Right.png"] forstate:uicontrolstatenormal];        [Self.view Addsubview:rightbutton];    Volume button UIButton *volumebutton= [UIButton Buttonwithtype:uibuttontypecustom];    Volumebutton.frame=cgrectmake (10, 330, 40, 40);    [Volumebutton setimage:[uiimage imagenamed:@ "Labalan.png"] forstate:uicontrolstatenormal];    [Volumebutton addtarget:self Action: @selector (Showvolume) forcontrolevents:uicontroleventtouchupinside];        [Self.view Addsubview:volumebutton];    Background UIButton *backbutton= [UIButton Buttonwithtype:uibuttontypecustom];    Backbutton.frame=cgrectmake (270, 330, 40, 40);    [Backbutton setimage:[uiimage imagenamed:@ "Apple.png"] forstate:uicontrolstatenormal];    [Backbutton addtarget:self Action: @selector (SetBackground) forcontrolevents:uicontroleventtouchupinside];    [Self.view Addsubview:backbutton];        Music logo picture uiimageview* musicimageview= [[Uiimageview alloc] Initwithimage: [UIImage imagenamed:@] Musiclogo.png    "]];    Musicimageview.frame= CGRectMake (80, 40, 160, 140);            [Self.view Addsubview:musicimageview];    Title titlelabel= [[UILabel alloc] Initwithframe:cgrectmake (0, 195, 320, 30)];    titlelabel.font= [Uifont systemfontofsize:25];    Titlelabel.textalignment= Nstextalignmentcenter;    titlelabel.textcolor= [Uicolor Bluecolor];    titlelabel.numberoflines=0;    titlelabel.backgroundcolor= [Uicolor Clearcolor];    titlelabel.text= [Titlearray objectatindex:0];            [Self.view Addsubview:titlelabel];    Progress Control slider= [[UISlider alloc] Initwithframe:cgrectmake (50, 230, 220, 5)];    slider.maximumvalue=100;    slider.minimumvalue=0;    slider.value=0;    Slider.continuous=no;    [Slider addtarget:self Action: @selector (Processset:) forcontrolevents:uicontroleventvaluechanged]; [Slider addtarget:self Action: @selector (Processtimerstop) ForcontrolevEnts:uicontroleventtouchdown];        [Self.view Addsubview:slider];    Volume Control volumeslider= [[UISlider alloc] Initwithframe:cgrectmake (-85, 280, 220, 5)];    volumeslider.maximumvalue=1;    volumeslider.minimumvalue=0;    Volumeslider.value= 0.5;    Volumeslider.hidden=yes;    [Volumeslider addtarget:self Action: @selector (VolumeSet:) forcontrolevents:uicontroleventvaluechanged];    volumeslider.transform= cgaffinetransformmakerotation ( -90* m_pi/180);         [Self.view Addsubview:volumeslider]; Processtimer=[nstimer scheduledtimerwithtimeinterval:0.1 target:self Selector: @selector (process) Userinfo:nil        Repeats:yes];            [Self Loadmusic:[musicarray objectatindex:0] type:@ "MP3"]; uilongpressgesturerecognizer* rightlongpress= [[Uilongpressgesturerecognizer alloc] initwithtarget:self action:@    Selector (rightlongpress:)];        [Rightbutton addgesturerecognizer:rightlongpress]; uilongpressgesturerecognizer* leftlongpress= [[Uilongpressgesturerecognizer alloc] InitwithTarget:self Action: @selector (leftlongpress:)]; [LeftButton addgesturerecognizer:leftlongpress]; }//Progress Control-(void) Processset: (uislider*) slider{Processtimer=[nstimer scheduledtimerwithtimeinterval:0.1 target:self    Selector: @selector (process) Userinfo:nil Repeats:yes];    _audioplayer.currenttime=slider.value/100*_audioplayer.duration; if (_audioplayer.playing==yes) [_audioplayer playattime:_audioplayer.currenttime];} -(void) processtimerstop{[Processtimer invalidate];}    background-(void) setbackground{uiimagepickercontroller* picker= [[Uiimagepickercontroller alloc] init];    Picker.sourcetype= Uiimagepickercontrollersourcetypesavedphotosalbum;    picker.delegate=self; [Self Presentviewcontroller:picker animated:no completion:nil];} #pragma-mark-doclickactions//Right button gesture-(void) Rightlongpress: (uilongpressgesturerecognizer*) longpress{if (        Longpress.state! = Uigesturerecognizerstatebegan) return; if (_audioplayer.playing) {if (_audioplayer.currenttime>_AUDIOPLAYER.DURATION-5) _audioplayer.currenttime=_audioplayer.currenttime;        else _audioplayer.currenttime+=5;            [_audioplayer Playattime:_audioplayer.currenttime]; }}//left button gesture-(void) Leftlongpress: (uilongpressgesturerecognizer*) longpress{if (longpress.state! =    Uigesturerecognizerstatebegan) return;        if (_audioplayer.playing) {if (_audioplayer.currenttime<5) _audioplayer.currenttime=0;                else _audioplayer.currenttime-=5;                [_audioplayer Playattime:_audioplayer.currenttime];    printf ("left\n");    }}//snowflake Function-(void) snow{int startx= random ()%320;    int endx= random ()%320;    int width= random ()%25;    CGFloat time= (Random ()%100)/10+5;        CGFloat alp= (random ()%9)/10.0+0.1;    uiimage* image= [UIImage imagenamed:@ "Snow.png"];    uiimageview* ImageView = [[Uiimageview alloc] initwithimage:image];    Imageview.frame= CGRectMake (startx,-1*width,width,width); ImageView.alpha=alp;        [Self.view Addsubview:imageview]; [UIView Beginanimations:nil context: (__bridge void *)    (ImageView)];    [UIView Setanimationduration:time];            if (endx>50&&endx<270) {imageview.frame= CGRectMake (EndX, 270-WIDTH/2, width, width); } else if ((endx>10&&endx<50) | | |        (endx>270&&endx<310))    Imageview.frame= CGRectMake (EndX, 400-WIDTH/2, width, width);    else imageview.frame= CGRectMake (endx, 480, width, width);    [UIView setanimationdidstopselector: @selector (onAnimationComplete:finished:context:)];    [UIView setanimationdelegate:self]; [UIView commitanimations];}    -(void) Onanimationcomplete: (nsstring*) Animationid finished: (nsnumber*) finished context: (void*) context{    uiimageview* snowview= (__bridge Uiimageview *) (context);    [Snowview Removefromsuperview]; }//Package System load Function-(void) Loadmusic: (nsstring*) name type: (nsstring*) type{nsstring* path= [[NSBundle Mainbundle] Pathforresource:name Oftype:type];        nsurl* url = [Nsurl Fileurlwithpath:path];    _audioplayer= [[Avaudioplayer alloc] Initwithcontentsofurl:url Error:nil];    _audioplayer.delegate=self;    _audioplayer.volume= 0.5;    [_audioplayer Preparetoplay]; }//volume Setting-(void) VolumeSet: (uislider*) slider{_audioplayer.volume= Slider.value;}    -(void) showvolume{volumeslider.hidden=no; [Nstimer scheduledtimerwithtimeinterval:5.0 target:self selector: @selector (hidevolume) Userinfo:nil repeats:no];} -(void) hidevolume{volumeslider.hidden=yes;} Song Progress-(void) process{slider.value= 100*_audioplayer.currenttime/_audioplayer.duration;} #pragma-mark-doclickactions//play-(void) Play: (uibutton*) button{if (_audioplayer.playing) {[Button setimage:[        UIImage imagenamed:@ "Play.png"] forstate:uicontrolstatenormal];        [_audioplayer pause];    [Timer1 invalidate];        } else {[button setimage:[uiimage imagenamed:@ "Stop.png"] forstate:uicontrolstatenormal]; Timer1=[nstimer Scheduledtimerwithtimeinterval:0.1 target:self selector: @selector (Snow) Userinfo:nil Repeats:yes];    [_audioplayer play];    }}//previous-(void) prier{BOOL playflag;        if (_audioplayer.playing) {playflag=yes;    [_audioplayer stop];    } else {playflag=no;    } songindex--;    if (songindex<0) songindex= musicarray.count-1;        [Self Loadmusic:[musicarray objectatindex:songindex] type:@ "MP3"];        UIImage * image = [UIImage imagenamed:[nsstring stringwithformat:@ "%@.jpg", [Musicarray Objectatindex:songindex]];    [Self setbackground:image];    titlelabel.text= [Titlearray Objectatindex:songindex];    if (playflag==yes) {[_audioplayer play];    }}//Next-(void) next{BOOL playflag;        if (_audioplayer.playing) {playflag=yes;    [_audioplayer stop];    } else{Playflag=no;    } songindex++;    if (songindex==musicarray.count) {songindex= 0; } [self Loadmusic:[musicarray objEctatindex:songindex] type:@ "MP3"];        UIImage * image = [UIImage imagenamed:[nsstring stringwithformat:@ "%@.jpg", [Musicarray Objectatindex:songindex]];        [Self setbackground:image];    titlelabel.text= [Titlearray Objectatindex:songindex];            if (playflag==yes) {[_audioplayer play]; }} #pragma-mark-avaudioplayerdelegate//playback complete automatic switching-(void) audioplayerdidfinishplaying: (Avaudioplayer *) player    Successfully: (BOOL) flag{songindex++;    if (Songindex==musicarray.count) songindex= 0;    [Self Loadmusic:[musicarray objectatindex:songindex] type:@ "MP3"];    titlelabel.text= [Titlearray Objectatindex:songindex];    [_audioplayer play]; } #pragma-mark-uiimagepickercontrollerdelegate-(void) Imagepickercontrollerdidcancel: (Uiimagepickercontroller *) picker{[self Dismissviewcontrolleranimated:yes completion:nil];} -(void) Imagepickercontroller: (Uiimagepickercontroller *) Picker didfinishpickingimage: (UIImage *) Image Editinginfo :(nsdictionary *) editinginfo{backimageview.image = image; [Self Dismissviewcontrolleranimated:yes completion:nil];}    -(void) SetBackground: (UIImage *) image{backimageview.image = image; } @end

  

"Code Notes" to listen to a story