音乐播放器

//
//  ViewController.m
//  播放器
//
//  Created by apple on 14-7-18.
//  Copyright (c) 2014年 apple. All rights reserved.
//

#import "ViewController.h"
#import "AVFoundation/AVFoundation.h"
@interface ViewController ()<AVAudioPlayerDelegate>
{
    AVAudioPlayer *player;//播放器
    NSArray *_musiclist;//歌曲名列表
    NSTimer *_timer;//定时器检查播放进度的动态送给进度tiao
    int _index;//歌曲的多少；
}
//播放进度的显示
@property IBOutlet UISlider *progressSlider;

@end
@implementation ViewController

//make button
- (void)chuangJianBtn
{
    UIButton *start=[UIButton buttonWithType:UIButtonTypeCustom];
    start.frame=CGRectMake(100, 300, 100, 30);
    [start setTitle:@"开/停" forState:UIControlStateNormal];
    [start setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
    [start addTarget:self action:@selector(kaiOrStop) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:start];
    
    UIButton *nextBtn=[UIButton buttonWithType:UIButtonTypeCustom];
    nextBtn.frame=CGRectMake(210, 300, 100, 30);
    [nextBtn setTitle:@"next" forState:UIControlStateNormal];
    [nextBtn setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
    [nextBtn addTarget:self action:@selector(next:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:nextBtn];
    
    UIButton *beforeBtn=[UIButton buttonWithType:UIButtonTypeCustom];
    beforeBtn.frame=CGRectMake(10, 300, 100, 30);
    [beforeBtn setTitle:@"before" forState:UIControlStateNormal];
    [beforeBtn setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
    [beforeBtn addTarget:self action:@selector(before:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:beforeBtn];
    //[self buttonRect:CGRectMake(210, 300, 100, 30) Title:@"next" TitleColor:[UIColor redColor] Action:@selector(next:)];
    //[self buttonRect:CGRectMake(0, 300, 100, 30) Title:@"before" TitleColor:[UIColor redColor] Action:@selector(before:)];
}

//下一首按钮
- (void)next:(UIButton *)sender
{
    if (_index==_musiclist.count)
    {
        _index=0;
    }
    else
    {
    _index++;
    }
    [self play];
    NSLog(@"下一首");
}

- (void)before:(UIButton *)sender
{
    if (_index==0)
    {
        _index=2;
    }
    else
    {
    _index--;
    }
    [self play];
    NSLog(@"上一首");
}

//按钮封装
- (UIButton *)buttonRect:(CGRect)rect Title:(NSString *)title TitleColor:(UIColor *)titleColor Action:(SEL)action
{
    UIButton *start=[UIButton buttonWithType:UIButtonTypeCustom];
    start.frame=rect;
    [start setTitle:title forState:UIControlStateNormal];
    [start setTitleColor: titleColor forState:UIControlStateNormal];
    [start addTarget:self action:@selector(action) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:start];
    return start;
}

//创建UISlider
-(void)chuangJianSlider
{
    UISlider *shengYinSlider=[[UISlider alloc]initWithFrame:CGRectMake(20, 200, 250, 10)];
    shengYinSlider.value=0.5;
    shengYinSlider.tintColor=[UIColor blueColor];
    shengYinSlider.maximumValue=1;
    shengYinSlider.minimumValue=0;
    [shengYinSlider addTarget:self action:@selector(shengYin:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:shengYinSlider];
    
    _progressSlider=[[UISlider alloc]initWithFrame:CGRectMake(20, 100, 250, 10)];
    _progressSlider.value=0.5;
    _progressSlider.tintColor=[UIColor blueColor];
    _progressSlider.maximumValue=1;
    _progressSlider.minimumValue=0;
    [_progressSlider addTarget:self action:@selector(progressSlider:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:_progressSlider];
}

//声音slider的动作fangf
-(void)shengYin:(UISlider *)sender
{
    player.volume=sender.value;
    NSLog(@"%f",sender.value);
}



//播放进度调节显示
- (void)progressSlider:(UISlider *)sender
{
    player.currentTime=sender.value*player.duration;
}
//播放完成代理
- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag
{
    _index++;
    if (_index==_musiclist.count) {
        _index=0;
    }
    [self play];
}

//开始停止按钮
- (void)kaiOrStop
{
    
    if(player.playing)
    {
        [player stop];
    }
    else
    {
        [player play];
    }
    NSLog(@"kaiShiTingZhi");

}

//开始播放设置
- (void)play
{
    NSString *name=_musiclist[_index];
    NSString *path=[[NSBundle mainBundle] pathForResource:name ofType:@"mp3"];
    //    NSData *avData=[NSData dataWithContentsOfFile:path];
    //    player=[[AVAudioPlayer alloc]initWithData:avData error:nil];
    //生成一个urld的对象
    NSURL *url=[NSURL fileURLWithPath:path];
    
    NSData *data=[NSData dataWithContentsOfURL:url];
    //把本地文件给播放器
    player=[[AVAudioPlayer alloc]initWithData:data error:nil];
    player.delegate=self;
    //改变速率
    //player.enableRate=YES;
    player.rate=4;
    //设置开始的时间
    player.currentTime=100;
    player.volume=0.5;
    [player prepareToPlay];
    //开始播放
    [player play];
    //定时器来调用progress方法
    _timer=[NSTimer scheduledTimerWithTimeInterval:0.1 target:self selector:@selector(progress:) userInfo:nil repeats:YES];
}

//改变进度条
- (void)progress:(UISlider *)sender
{
    self.progressSlider.value=player.currentTime/player.duration;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    [self chuangJianBtn];
    [self chuangJianSlider];
    _musiclist=@[@"Beyond-光辉岁月",@"G.E.M.邓紫棋-你把我灌醉",@"G.E.M.邓紫棋-回忆的沙漏 (国)"];
    [self play];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end