ios AVFoundation으로 오디오 플레이어 만들기

AVFoundation 으로 오디오 플레이어 만들기

1. mp3 파일 넣어주기, view객체 지정

대략 이런 모습

2.위에서 만든 뷰객체들을 컨트롤러에 연결시켜 준다.(avfoundation import 하고 아래 두개의 매서드를 선언해준다.)

//

//  ViewController.h

//  avFoundationMusic

//

//  Created by MacBookPro on 10/11/2018.

//  Copyright © 2018 MacBookPro. All rights reserved.

//

#import <UIKit/UIKit.h>

#import <AVFoundation/AVFoundation.h>

//델리게이트 선언

@interface ViewController : UIViewController <AVAudioPlayerDelegate>

- (IBAction)playPauseAudio:(id)sender;

- (IBAction)stopAudio:(id)sender;

- (IBAction)adjustVolume:(id)sender;

- (IBAction)progressSliderChanged:(id)sender;

@property (weak, nonatomic) IBOutlet UISlider *progressSlider;

@property (weak, nonatomic) IBOutlet UISlider *volumeSlider;

@property (weak, nonatomic) IBOutlet UIButton *playPauseButton;

@property (weak, nonatomic) IBOutlet UILabel *currentTimeLabel;

@property (weak, nonatomic) IBOutlet UILabel *durationLabel;

@property (strong,nonatomic) AVAudioPlayer *audioPlayer;

@property (strong, nonatomic) NSTimer *sliderTimer;

-(NSString *)stringFromInterval : (NSTimeInterval)interval;

-(void) updateSlider;

@end

3.위에서 선언한 메서드 구현하기

//

//  ViewController.m

//  avFoundationMusic

//

//  Created by MacBookPro on 10/11/2018.

//  Copyright © 2018 MacBookPro. All rights reserved.

//

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    

    //mp3 경로

    NSURL *url = [NSURL fileURLWithPath:[[NSBundle mainBundle]pathForResource:@"abc" ofType:@"mp3"]];

    NSError *error;

    

    //audioplayer 초기화

    self.audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error];

    

    if (error) {

        NSLog(@"fehler : %@", error.localizedDescription);

    }else{

        

        //위임자는 자기자신

        self.audioPlayer.delegate= self;

        self.progressSlider.value = 0.0;

        self.volumeSlider.value = 0.5;

        //현재오디오 진행 시간을 보여주는 lable = [audioPlayer에서 보여주는 시간 가공해서 보여주기] 

        self.durationLabel.text = [self stringFromInterval:self.audioPlayer.duration];

        

        //mp3의 전체 길이가 1시간을 넘지 않는다면

        if (self.audioPlayer.duration <= 3600) {

            self.currentTimeLabel.text = [NSString stringWithFormat:@"00:00"];

        }else{

            self.currentTimeLabel.text = [NSString stringWithFormat:@"0:00:00"];

        }

        

        //준비완료

        [self.currentTimeLabel sizeToFit];

        [self.audioPlayer prepareToPlay];

    }

}

//audioPlayer.duration 을 가공해서 stirng으로 리턴

-(NSString *)stringFromInterval : (NSTimeInterval)interval{

    

    NSInteger ti = (NSInteger)interval;

    

    int sec = ti % 60;

    int min = (ti / 60) % 60;

    int hour = (ti / 3600);

    if (ti <= 3600) {

        return [NSString stringWithFormat:@"%02d:%02d",min,sec];

    }

    return [NSString stringWithFormat:@"%d:%02d:%02d",hour,min,sec];

    

}

-(void) updateSlider{

    self.progressSlider.value = self.audioPlayer.currentTime;

    self.currentTimeLabel.text = [self stringFromInterval:self.audioPlayer.currentTime];

    NSLog(@"updateSlider : %f  : %@" ,self.audioPlayer.currentTime ,[self stringFromInterval: self.audioPlayer.currentTime]);

}

- (IBAction)playPauseAudio:(id)sender {

     NSLog(@"self.audioPlayer.playing0 : %c", self.audioPlayer.playing);

    //플레이가 안되고 있으면

    if (!self.audioPlayer.playing) {

        NSLog(@"self.audioPlayer.playing1 : %c", self.audioPlayer.playing);

        self.progressSlider.maximumValue = self.audioPlayer.duration;

        //updateSlider 메서드를 1초간격으로 호출

        self.sliderTimer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(updateSlider) userInfo:nil repeats:YES];

        

        //오디오 진행바 변경됐을때 이벤트 감지

        [self.progressSlider addTarget:self action:@selector(progressSliderChanged:) forControlEvents:UIControlEventValueChanged];

        

        //실행

        [self.audioPlayer play];

        [self.playPauseButton setTitle:@"pause" forState:UIControlStateNormal];

    }else{

        //정지시키기

        NSLog(@"self.audioPlayer.playing2 : %c", self.audioPlayer.playing);

        [self.audioPlayer pause];

        [self.playPauseButton setTitle:@"play" forState:UIControlStateNormal];

    }

    

}

//정지 버튼

- (IBAction)stopAudio:(id)sender {

    //오디오가 플레이 중이면 정지시킨다

    if (self.audioPlayer.isPlaying) {

        [self.audioPlayer stop];

    }

    

    [self.audioPlayer setCurrentTime:0.0];

    [self.sliderTimer invalidate];

    self.progressSlider.value = 0.0;

    

    //오디오 총길이가 1시간보다 적을경우

    if (self.audioPlayer.duration <= 3600) {

        self.currentTimeLabel.text = [NSString stringWithFormat:@"00:00"];

    } else {

        self.currentTimeLabel.text = [NSString stringWithFormat:@"0:00:00"];

    }

    

    [self.currentTimeLabel sizeToFit];

    [self.playPauseButton setTitle:@"play" forState:normal];

    

}

//불륨 버튼

- (IBAction)adjustVolume:(id)sender {

    if (self.audioPlayer != nil) {

        self.audioPlayer.volume = self.volumeSlider.value;

    }

}

//진행바가 변경이 될때

- (IBAction)progressSliderChanged:(id)sender {

    [self.audioPlayer stop];  //오디오 정지

    [self.audioPlayer setCurrentTime:self.progressSlider.value];

    [self.audioPlayer prepareToPlay];   //준비

    [self.audioPlayer play];            //실행

}

-(void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag{

    if (flag) {

        [self stopAudio:nil];

    }

}

-(void)audioPlayerDecodeErrorDidOccur:(AVAudioPlayer *)player error:(NSError *)error{

    

    NSLog(@"decodierfehler: %@" ,  error.localizedDescription);

}

- (void)audioPlayerBeginInterruption:(AVAudioPlayer *)player{

    //audio player wird unterbrochen

}

- (void)audioPlayerEndInterruption:(AVAudioPlayer *)player withOptions:(NSUInteger)flags{

    if (flags == AVAudioSessionInterruptionOptionShouldResume && self.audioPlayer != nil) {

        [self.audioPlayer play];

    }

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

@end