IOS学习：AVAudioPlayer播放音乐文件及读取ipod库中的音乐文件(2)

来源：未知责任编辑：责任编辑发表时间:2015-03-01 01:30　点击:次

{
    [super viewDidLoad];

    UIButton *musicPlay = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    musicPlay.frame = CGRectMake(10, 10, 90, 35);
    [musicPlay setTitle:@"Play" forState:UIControlStateNormal];
    [musicPlay addTarget:self action:@selector(playMusic) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:musicPlay];

    UIButton *pause = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    pause.frame = CGRectMake(115, 10, 90, 35);
    [pause setTitle:@"Pause" forState:UIControlStateNormal];
    [pause addTarget:self action:@selector(pause) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:pause];

    UIButton *stop = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    stop.frame = CGRectMake(220, 10, 90, 35);
    [stop setTitle:@"stop" forState:UIControlStateNormal];
    [stop addTarget:self action:@selector(stop) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:stop];

    slider = [[UISlider alloc] initWithFrame:CGRectMake(10, 65, 300, 20)];
    [slider addTarget:self action:@selector(sliderValueChange:) forControlEvents:UIControlEventValueChanged];
    [self.view addSubview:slider];

    //
    NSString *path = [[NSBundle mainBundle] pathForResource:@"找一个相爱的理由-晨熙-艾歌" ofType:@"wav"];
    NSURL *url = [NSURL fileURLWithPath:path];
    player = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:nil];
    // 设置循环次数，-1为一直循环
    player.numberOfLoops = -1;
    // 准备播放
    [player prepareToPlay];
    // 设置播放音量
    player.volume = 50;
    // 当前播放位置，即从currentTime处开始播放，相关于android里面的seekTo方法
    player.currentTime = 15;
    // 设置代理
    player.delegate = self;
    int dur = player.duration;
    slider.maximumValue = dur;

    // 一秒一次更新播放进度