iOS AVAudioPlayer簡單的MP3播放

標籤：

- (void)viewDidLoad {    [super viewDidLoad];    UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];    [button setFrame:CGRectMake(100, 100, 60, 40)];    [button setTitle:@"Play" forState:UIControlStateNormal];    [button addTarget:self action:@selector(play) forControlEvents:UIControlEventTouchUpInside];    [self.view addSubview:button];        UIButton *button1 = [UIButton buttonWithType:UIButtonTypeRoundedRect];    [button1 setFrame:CGRectMake(100, 150, 60, 40)];    [button1 setTitle:@"pause" forState:UIControlStateNormal];    [button1 addTarget:self action:@selector(pause) forControlEvents:UIControlEventTouchUpInside];    [self.view addSubview:button1];         UIButton *button2 = [UIButton buttonWithType:UIButtonTypeRoundedRect];    [button2 setFrame:CGRectMake(100, 200, 60, 40)];    [button2 setTitle:@"stop" forState:UIControlStateNormal];    [button2 addTarget:self action:@selector(stop) forControlEvents:UIControlEventTouchUpInside];    [self.view addSubview:button2];        NSString *path = [[NSBundle mainBundle] pathForResource:@"MP3Sample" ofType:@"mp3"];    NSURL *url = [NSURL URLWithString:path];    //每個AVAudioPlayer只能播放一個音樂檔案,如果需要播放多次,需要建立多次    self.avAudioPalayer = [[AVAudioPlayer alloc]initWithContentsOfURL:url error:nil];    self.avAudioPalayer.delegate = self;    self.avAudioPalayer.volume = 1;//初始化音量    self.avAudioPalayer.numberOfLoops = -1;//設定音樂播放次數  -1為一直迴圈    [self.avAudioPalayer prepareToPlay];//預播放        self.progressView = [[UIProgressView alloc]initWithFrame:CGRectMake(20, 50, 200, 20)];    [self.view addSubview:self.progressView];        self.timer = [NSTimer scheduledTimerWithTimeInterval:0.1 target:self selector:@selector(playProgress) userInfo:nil repeats:YES];        self.slider = [[UISlider alloc]initWithFrame:CGRectMake(20, 70, 200, 20)];    [self.slider addTarget:self action:@selector(volumeChange)                          forControlEvents:UIControlEventValueChanged];    self.slider.minimumValue = 1.0;    self.slider.maximumValue = 10.0;    self.slider.value = 5.0;    [self.view addSubview:self.slider];}- (void)volumeChange{    self.avAudioPalayer.volume = self.slider.value;}- (void)playProgress{    self.progressView.progress = self.avAudioPalayer.currentTime/self.avAudioPalayer.duration;}- (void)play{    [self.avAudioPalayer play];}- (void)pause{    [self.avAudioPalayer pause];}- (void)stop{    self.avAudioPalayer.currentTime = 0;    [self.avAudioPalayer stop];}- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag{    [self.timer invalidate];}

允許效果

iOS AVAudioPlayer簡單的MP3播放