View pictures and listen to sounds

View pictures and listen to sounds

 

:

 

When you click the play button, the sound will be played;

Click the button on the left to go to the previous one.

Click the button on the right to go to the next one.

At the same time, the picture and words of the played content are displayed in the middle.

 

Engineering architecture:

RootViewController. h

# Import <UIKit/UIKit. h> # import <AVFoundation/AVFoundation. h> @ interface RootViewController: UIViewController <AVAudioPlayerDelegate> {UIImageView * backImageView; // player AVAudioPlayer * _ audioPlayer; // array of image names NSMutableArray * pictureNameArray; // music name array NSMutableArray * musicNameArray; // The index int songIndex of the subscript to be played; // The left button UIButton * leftButton; // the right button UIButton * rightButton; // display the title label UILabel * titleLabel;} @ end

 

RootViewController. m

# Import "RootViewController. h "@ interface RootViewController () @ end @ implementation RootViewController-(id) initWithNibName :( NSString *) bundle :( NSBundle *) handle {self = [super initWithNibName: nibNameOrNil bundle: nibBundleOrNil]; if (self) {// Custom initialization} return self;}-(void) viewDidLoad {[super viewDidLoad]; self. title = @ "view pictures and audios"; // initialize data [self initData]; // initialize the background image [self initBackGroundView];} # pragma-mark-functions-(void) initData {pictureNameArray = [[NSMutableArray alloc] initWithObjects: @ "chicken", @ "bear", @ "bird", @ "camel", @ "cat ", @ "cattle", @ "deer", @ "dog", @ "doldolphin", @ "donkey", @ "duck", @ "elephant", @ "fox ", @ "frog", @ "goose", @ "horse", @ "lion", @ "mew", @ "monkey", @ "pig", @ "sheep ", @ "snake", @ "tiger", @ "wolf", nil]; musicNameArray = [[NSMutableArray alloc] initWithObjects: @ "chicken", @ "bear ", @ "bird", @ "Camel", @ "kitten", @ "cow", @ "sika deer", @ "puppy", @ "Dolphin", @ "Mao ", @ "Duck", @ "elephant", @ "Fox", @ "frog", @ "White Goose", @ "Pony", @ "lion", @ "sea bird ", @ "monkey", @ "", @ "Sheep", @ "snake", @ "tiger", @ "wolf", nil];}-(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];}-(void) initBackGroundView {backImageView = [[UIImageView alloc] initWithFrame: CGRectMake (0, 0,320,460)]; backImageView. image = [UIImage imageNamed: [NSString stringWithFormat: @ "%@.jpg", [pictureNameArray objectAtIndex: songIndex]; [self. view addSubview: backImageView]; // play button UIButton * button = [UIButton buttonWithType: UIButtonTypeCustom]; button. tag = 100; button. frame = CGRectMake (130,310, 60, 50); [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 (30,310, 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 (230,310, 60, 50); [rightButton addTarget: self action: @ selector (next) forControlEvents: UIControlEventTouchUpInside]; [rightButton setImage: [UIImage imageNamed: @ "right.png"] forState: UIControlStateNormal]; [self. view addSubview: rightButton]; // Title titleLabel = [[UILabel alloc] initWithFrame: CGRectMake (0,290,320, 30)]; titleLabel. font = [UIFont systemFontOfSize: 25]; titleLabel. textAlignment = NSTextAlignmentCenter; titleLabel. textColor = [UIColor blueColor]; titleLabel. numberOfLines = 0; titleLabel. text = [musicNameArray objectAtIndex: 0]; [self. view addSubview: titleLabel]; [self loadMusic: [pictureNameArray objectAtIndex: 0] type: @ "mp3"];}-(void) setBackground :( UIImage *) image {backImageView. image = image ;}# pragma-mark-doClickActions // play-(void) play :( UIButton *) button {if (_ audioPlayer. playing) {[button setImage: [UIImage imageNamed: @ "play.png"] forState: UIControlStateNormal]; [_ audioPlayer pause];} else {[button setImage: [UIImage imageNamed: @ "stop.png"] forState: UIControlStateNormal]; [_ audioPlayer play] ;}// previous-(void) prier {BOOL playFlag; if (_ audioPlayer. playing) {playFlag = YES; [_ audioPlayer stop];} else {playFlag = NO;} songIndex --; if (songIndex <0) songIndex = pictureNameArray. count-1; UIButton * button = (UIButton *) [self. view viewWithTag: 100]; [button setImage: [UIImage imageNamed: @ "play.png"] forState: UIControlStateNormal]; [self loadMusic: [pictureNameArray objectAtIndex: songIndex] type: @ "mp3"]; UIImage * image = [UIImage imageNamed: [NSString stringWithFormat: @ "#@.jpg", [pictureNameArray objectAtIndex: songIndex]; [self setBackground: image]; titleLabel. text = [musicNameArray 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 = pictureNameArray. count) {songIndex = 0;} UIButton * button = (UIButton *) [self. view viewWithTag: 100]; [button setImage: [UIImage imageNamed: @ "play.png"] forState: UIControlStateNormal]; [self loadMusic: [pictureNameArray objectAtIndex: songIndex] type: @ "mp3"]; UIImage * image = [UIImage imageNamed: [NSString stringWithFormat: @ "#@.jpg", [pictureNameArray objectAtIndex: songIndex]; [self setBackground: image]; titleLabel. text = [musicNameArray objectAtIndex: songIndex]; if (playFlag = YES) {[_ audioPlayer play] ;}}@ end

 

Listen to the sound and watch the icon to guess which of the professional skills is more difficult

Listen to the voice, because the skill voice is in English, the icon is somewhat impressed after reading it again. You should be able to write it down several times.
 
Why can't I hear the sound when I watch a movie on a website?

1. Reset the default setting in the IE option settings. 2. There will be no sound when you plug in the audio box into different eye channels.