音乐播放器（主界面）

音乐播放器（主界面）
import <UIKit/UIKit.h>

import <AVFoundation/AVFoundation.h>

@interface MjMusicViewController : UIViewController<UITableViewDataSource,UITableViewDelegate,AVAudioPlayerDelegate>
{
NSInteger controlPlayStyle;
NSInteger controlPlay;
NSMutableArray *timeArray;
NSMutableDictionary *LRCDictionary;
NSUInteger lrcLineNumber;
}

@end

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import "MjMusicViewController.h"

import "DXSemiViewControllerCategory.h"

import <AVFoundation/AVFoundation.h>

define kLrcTableView 10001

//#define kPlaySequent 1;
//#define kPlayRandom 2;
//#define kPlayCircle 3;

static NSString *songIdentify = @"songIdentify";
@interface MjMusicViewController ()

@property (retain, nonatomic) IBOutlet UIView *controlView;
@property (retain, nonatomic) IBOutlet UIImageView *imageView;
@property (nonatomic,retain)AVAudioPlayer *audioPlayer;
@property (retain, nonatomic) IBOutlet UIButton *songBtn;
@property (retain, nonatomic) IBOutlet UIButton *playStyleBtn;
@property (retain, nonatomic) IBOutlet UISlider *sliderProgress;
@property (retain, nonatomic) IBOutlet UIButton *controlBtn;
@property (retain, nonatomic) IBOutlet UIButton *priorSongBtn;
@property (retain, nonatomic) IBOutlet UIButton *nextSongBtn;
@property (retain, nonatomic) IBOutlet UILabel *labelAllTime;
@property (retain, nonatomic) IBOutlet UILabel *labelProgressTime;
@property (retain, nonatomic) IBOutlet UISlider *sliderVolume;
@property (retain, nonatomic) IBOutlet UILabel *songNameLabel;
@property (retain, nonatomic) IBOutlet UITableView *lrcTableView;

@property (nonatomic,retain)NSArray *songsDataSource;
@property (nonatomic,assign)NSInteger musicNum;
@property (nonatomic,retain)NSString *currentSong;
@property (nonatomic ,retain)UITableView *songTableView;
@property (nonatomic,retain)NSURL *soundURL;

@end

@implementation MjMusicViewController
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
  {
  self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
  if (self) {
  // Custom initialization
  self.songsDataSource = @[@"光辉岁月",@"Never Give Up",@"怒放的生命",@"你给我听好",@"You Belong With Me",@"Stay Beautiful",@"我只在乎你",@"泡沫"];
  
  }
  return self;
  }
- (void)viewDidLoad
  {
  [super viewDidLoad];
  controlPlayStyle = 2;
  controlPlay = 1;
  self.controlView.alpha = 0.6f;
  self.controlView.backgroundColor = [UIColor lightGrayColor];
  self.view.backgroundColor = [UIColor lightGrayColor];
  self.navigationController.navigationBarHidden = YES;
  
  self.imageView.animationImages = @[[UIImage imageNamed:@"scene1.jpg"],
  [UIImage imageNamed:@"scene2.jpg"],
  [UIImage imageNamed:@"scene3.jpg"],
  [UIImage imageNamed:@"scene4.jpg"],
  [UIImage imageNamed:@"scene5.jpg"],
  ];
  
  self.imageView.animationDuration = 20.0;
  [self.imageView stopAnimating];
  [self.view addSubview:self.imageView];
  [self.imageView addSubview:self.songNameLabel];
  [self.imageView addSubview:self.labelProgressTime];
  [self.imageView addSubview:self.labelAllTime];
  [self.imageView addSubview:self.sliderProgress];
  [self.imageView addSubview:self.controlView];
  [self.imageView addSubview:self.lrcTableView];
// 为了显示歌词
```
self.lrcTableView.tag = 10001;
self.lrcTableView.backgroundColor = [UIColor clearColor];
self.lrcTableView.separatorStyle = UITableViewCellSeparatorStyleNone;
self.lrcTableView.dataSource = self;
self.lrcTableView.delegate =self;
lrcLineNumber = 0;

timeArray = [[NSMutableArray alloc] initWithCapacity:10];
LRCDictionary = [[NSMutableDictionary alloc] initWithCapacity:10];
```
// 初始化歌词
[self initLRC];
```
[NSTimer scheduledTimerWithTimeInterval:0.1
                                 target:self
                               selector:@selector(onTimer:)
                               userInfo:nil repeats:YES];
self.soundURL = [[NSBundle mainBundle] URLForResource:@"光辉岁月" withExtension:@"mp3"];
self.musicNum = 0;
NSError *error = nil;
self.audioPlayer = [[AVAudioPlayer alloc]initWithContentsOfURL:self.soundURL error:&error];
self.audioPlayer.delegate = self;
self.audioPlayer.numberOfLoops = 0;

if (nil != error) {
    NSLog(@"Error:%@",error);
}

[self.audioPlayer prepareToPlay];

[self.controlBtn setBackgroundImage:[UIImage imageNamed:@"play"]
                           forState:UIControlStateNormal];
[self.playStyleBtn setBackgroundImage:[UIImage imageNamed:@"mode_orderplay"]
                             forState:UIControlStateNormal];
self.songNameLabel.text = @"光辉岁月";
```
// 初始化Slider
self.sliderProgress.minimumValue = 0.0;
self.sliderProgress.maximumValue = self.audioPlayer.duration;
[self.sliderProgress setThumbImage:[UIImage imageNamed:@"mv_voiceSliderThumb"] forState:UIControlStateNormal];
[self.sliderVolume setThumbImage:[UIImage imageNamed:@"mv_voiceSliderThumb"] forState:UIControlStateNormal];
//格式化label显示时间
[self ruleTimeLabel:self.labelAllTime andTime:self.audioPlayer.duration];
```
//添加UISongTableView
CGRect songTableFrame = CGRectMake(320, 50, 300, 430);
self.songTableView = [[UITableView alloc ]initWithFrame:songTableFrame
                                                  style:UITableViewStylePlain];
self.songTableView.alpha = 0.6f;
self.songTableView.dataSource = self;
self.songTableView.delegate = self;
[self.songTableView registerClass:[UITableViewCell class]
           forCellReuseIdentifier:songIdentify];
```
// 添加手势
UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc ]
initWithTarget:self
action:@selector(onSingleTap:)];
// 表示多点触摸时的手指数量
tapGesture.numberOfTouchesRequired = 1;
// 表示轻拍的次数，现在一个手指轻拍一次，也就是单击的动作
tapGesture.numberOfTapsRequired = 1;
// 为视图view添加上手势的动作处理
[self.imageView addGestureRecognizer:tapGesture];

}

pragma mark -

pragma mark dataSource
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
  {
  if (tableView.tag == kLrcTableView) {
  return timeArray.count;
  }else{
  return self.songsDataSource.count;
  }
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
  {
  static NSString *cellIdentifier = @"LRCCell";
  UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
  if (tableView.tag == kLrcTableView) {
  if (cell == nil) {
  cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
  reuseIdentifier:cellIdentifier];
  }
  cell.selectionStyle = UITableViewCellSelectionStyleNone;//该表格选中后没有颜色
  cell.backgroundColor = [UIColor clearColor];
  if (indexPath.row == lrcLineNumber) {
  cell.textLabel.text = LRCDictionary[timeArray[indexPath.row]];
  cell.textLabel.textColor = [UIColor orangeColor];
  cell.textLabel.font = [UIFont systemFontOfSize:15];
  } else {
  cell.textLabel.text = LRCDictionary[timeArray[indexPath.row]];
  cell.textLabel.textColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.5];
  cell.textLabel.font = [UIFont systemFontOfSize:13];
  }
  cell.textLabel.backgroundColor = [UIColor clearColor];
  cell.textLabel.textAlignment = NSTextAlignmentCenter;
  }else
  {
  cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
  reuseIdentifier:cellIdentifier];
  cell.textLabel.text = self.songsDataSource[indexPath.row];
  cell.textLabel.textAlignment = NSTextAlignmentLeft;
  
  }
  
  return cell;
}
//行高
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
  return 35;
  }
pragma mark -

pragma mark UITableView Delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
  {
  if (tableView.tag == kLrcTableView) {
  
  }else{
  self.currentSong = self.songsDataSource[indexPath.row];
  self.musicNum = indexPath.row;
  [self initLRC];
  self.songNameLabel.text = self.songsDataSource[indexPath.row];
  self.soundURL = [[NSBundle mainBundle] URLForResource:self.currentSong withExtension:@"mp3"];
  
  if ([self.audioPlayer isPlaying]) {
  [self.audioPlayer stop];
  [self changeSongs];
  [self.audioPlayer play];
  }
  else
  {
  [self changeSongs];
  [self.audioPlayer play];
  [self.controlBtn setBackgroundImage:[UIImage imageNamed:@"pause"]
  forState:UIControlStateNormal];
  }
  }
}

pragma mark -

pragma mark AVAudioPlayer Delegate
- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag
  {
// if (!controlPlayStyle) {
// [self sequencePlay];
// self.audioPlayer.delegate = self;
// [self.audioPlayer play];
// }else{
// [self randomPlay];
// self.audioPlayer.delegate = self;
// [self.audioPlayer play];
// }
switch (controlPlay) {
case 1:
[self sequencePlay];
self.audioPlayer.delegate = self;
[self.audioPlayer play];
break;
case 2:
[self randomPlay];
self.audioPlayer.delegate = self;
[self.audioPlayer play];
break;
case 3:
self.audioPlayer.numberOfLoops = -1;
self.audioPlayer.delegate = self;
[self.audioPlayer play];
break;
```
    default:
        break;
}
```
}

pragma mark -

pragma mark 方法回调
- (void)onTimer:(NSTimer *)timer
  {
  self.sliderProgress.value = self.audioPlayer.currentTime;
  [self ruleTimeLabel:self.labelProgressTime andTime:self.audioPlayer.currentTime];
  //调用歌词函数
  [self displaySondWord:self.audioPlayer.currentTime];
  }
- (IBAction)sliderProgressBtn:(UISlider *)sender {
  self.audioPlayer.currentTime = self.sliderProgress.value;
  self.sliderProgress.value =sender.value;
  }
- (IBAction)onSliderVolumeBtn:(UISlider*)sender {
  self.audioPlayer.volume = sender.value;
  }
//播放暂停控制按钮
- (IBAction)onControlBtn:(id)sender {
  if ([self.audioPlayer isPlaying]) {
  [self.controlBtn setBackgroundImage:[UIImage imageNamed:@"play"]
  forState:UIControlStateNormal];
  [self.audioPlayer pause];
  }else{
  [self.controlBtn setBackgroundImage:[UIImage imageNamed:@"pause"]
  forState:UIControlStateNormal];
  [self.audioPlayer play];
  }
  }
//得到歌曲列表
- (IBAction)onSongsBtn:(id)sender {
  [UIView beginAnimations:@"animation" context:nil];
  [UIView setAnimationCurve:UIViewAnimationCurveLinear];
  [UIView setAnimationDuration:0.2];
  CGRect frame = self.songTableView.frame;
  frame.origin.x = 80;
  self.songTableView.frame = frame;
  [self.view addSubview:self.songTableView];
  [UIView commitAnimations];
}

//上一首歌
- (IBAction)onPriorBtn:(id)sender {
  if (self.musicNum == 0) {
  self.musicNum = self.songsDataSource.count - 1;
  [self changeToPlay];
  }else{
  self.musicNum -= 1;
  [self changeToPlay];
  
  }
}

//下一首歌
- (IBAction)onNextBtn:(id)sender {
  if (self.musicNum == self.songsDataSource.count - 1) {
  self.musicNum = 0;
  [self changeToPlay];
  }else{
  self.musicNum += 1;
  [self changeToPlay];
  
  }
  NSLog(@"%ld",(long)self.musicNum);
  }
//随机播放
- (IBAction)onSongRudomBtn:(id)sender {
  // if (controlPlayStyle == 2) {
  // controlPlayStyle = YES;
  // [self.playStyleBtn setBackgroundImage:[UIImage imageNamed:@"mode_randplay"]
  // forState:UIControlStateNormal];
  // }else if(controlPlayStyle == 3)
  // {
  // controlPlayStyle = NO;
  // [self.playStyleBtn setBackgroundImage:[UIImage imageNamed:@"mode_orderplay"]
  // forState:UIControlStateNormal];
  // }
  switch (controlPlayStyle) {
  case 1:
  [self.playStyleBtn setBackgroundImage:[UIImage imageNamed:@"mode_orderplay"]
  forState:UIControlStateNormal];
  controlPlay = 1;
  controlPlayStyle = 2;
  break;
  case 2:
  [self.playStyleBtn setBackgroundImage:[UIImage imageNamed:@"mode_randplay"]
  forState:UIControlStateNormal];
  controlPlay = 2;
  controlPlayStyle = 3;
  break;
  case 3:
  [self.playStyleBtn setBackgroundImage:[UIImage imageNamed:@"mode_repeatlist"]
  forState:UIControlStateNormal];
  controlPlay = 3;
  controlPlayStyle = 1;
  break;
  default:
  break;
  }
  }
//手势
- (void)onSingleTap:(UITapGestureRecognizer *)singleTap
  {
  [self.songTableView removeFromSuperview];
  }
- (void)viewWillAppear:(BOOL)animated
  {
  [super viewWillAppear:animated];
  [self.imageView startAnimating];
  }
- (void)viewDidDisappear:(BOOL)animated
  {
  [super viewDidDisappear:YES];
  [self.imageView stopAnimating];
  }
//顺序播放
- (void)sequencePlay
  {
```
  if (self.musicNum == self.songsDataSource.count - 1) {
      self.musicNum = 0;
      [self changeToPlay];
     
  }else{
      self.musicNum += 1;
      [self changeToPlay];
      
  }
```
}

//随机播放
- (void)randomPlay
  {
  // if (self.audioPlayer.currentTime >= self.audioPlayer.duration-1.05) {
  NSInteger number = arc4random()%self.songsDataSource.count;
  self.musicNum = number;
  [self changeToPlay];
}

//切歌播放
- (void)changeToPlay
  {
  self.currentSong = self.songsDataSource[self.musicNum];
  self.soundURL =[[NSBundle mainBundle] URLForResource:self.currentSong withExtension:@"mp3"];
  timeArray = [[NSMutableArray alloc] initWithCapacity:10];
  LRCDictionary = [[NSMutableDictionary alloc] initWithCapacity:10];
  [self initLRC];
  self.songNameLabel.text = self.songsDataSource[self.musicNum];
  if ([self.audioPlayer isPlaying]) {
  [self.audioPlayer stop];
  [self changeSongs];
  [self.audioPlayer play];
  }else{
  [self changeSongs];
  }
  self.audioPlayer.delegate = self;
}

//切歌
- (void)changeSongs
  {
  NSError *error = nil;
  self.audioPlayer = [[AVAudioPlayer alloc]initWithContentsOfURL:self.soundURL
  error:&error];
  
  [self ruleTimeLabel:self.labelAllTime andTime:self.audioPlayer.duration];
  self.sliderProgress.minimumValue = 0.0;
  self.sliderProgress.maximumValue = self.audioPlayer.duration;
  if (nil != error) {
  NSLog(@"Error:%@",error);
  }
  
  [self.audioPlayer prepareToPlay];
}

//时间格式
- (void)ruleTimeLabel:(UILabel *)label andTime:(float)time
  {
  NSDateFormatter *date = [[NSDateFormatter alloc]init];
  [date setDateFormat:@"mm:ss"];
  
  label.text = [date stringFromDate:[NSDate dateWithTimeIntervalSince1970:time]];
}

pragma mark 得到歌词
- (void)initLRC {
  NSString *LRCPath = [[NSBundle mainBundle] pathForResource:self.songsDataSource[self.musicNum] ofType:@"lrc"];
  NSString *contentStr = [NSString stringWithContentsOfFile:LRCPath encoding:NSUTF8StringEncoding error:nil];
  // NSLog(@"contentStr = %@",contentStr);
  NSArray *array = [contentStr componentsSeparatedByString:@" "];
  for (int i = 0; i < [array count]; i++) {
  NSString *linStr = [array objectAtIndex:i];
  NSArray *lineArray = [linStr componentsSeparatedByString:@"]"];
  if ([lineArray[0] length] > 8) {
  NSString *str1 = [linStr substringWithRange:NSMakeRange(3, 1)];
  NSString *str2 = [linStr substringWithRange:NSMakeRange(6, 1)];
  if ([str1 isEqualToString:@":"] && [str2 isEqualToString:@"."]) {
  NSString *lrcStr = [lineArray objectAtIndex:1];
  NSString *timeStr = [[lineArray objectAtIndex:0] substringWithRange:NSMakeRange(1, 5)];//分割区间求歌词时间
  //把时间和歌词加入词典
  [LRCDictionary setObject:lrcStr forKey:timeStr];
  [timeArray addObject:timeStr];//timeArray的count就是行数
  }
  }
  }
  }
pragma mark 动态显示歌词
- (void)displaySondWord:(NSUInteger)time {
  // NSLog(@"time = %u",time);
  for (int i = 0; i < [timeArray count]; i++) {
```
  NSArray *array = [timeArray[i] componentsSeparatedByString:@":"];//把时间转换成秒
  NSUInteger currentTime = [array[0] intValue] * 60 + [array[1] intValue];
  if (i == [timeArray count]-1) {
      //求最后一句歌词的时间点
      NSArray *array1 = [timeArray[timeArray.count-1] componentsSeparatedByString:@":"];
      NSUInteger currentTime1 = [array1[0] intValue] * 60 + [array1[1] intValue];
      if (time > currentTime1) {
          [self updateLrcTableView:i];
          break;
      }
  } else {
      //求出第一句的时间点，在第一句显示前的时间内一直加载第一句
      NSArray *array2 = [timeArray[0] componentsSeparatedByString:@":"];
      NSUInteger currentTime2 = [array2[0] intValue] * 60 + [array2[1] intValue];
      if (time < currentTime2) {
          [self updateLrcTableView:0];
          //                NSLog(@"马上到第一句");
          break;
      }
      //求出下一步的歌词时间点，然后计算区间
      NSArray *array3 = [timeArray[i+1] componentsSeparatedByString:@":"];
      NSUInteger currentTime3 = [array3[0] intValue] * 60 + [array3[1] intValue];
      if (time >= currentTime && time <= currentTime3) {
          [self updateLrcTableView:i];
          break;
      }
      
  }
```
  }
  }
pragma mark 动态更新歌词表歌词
- (void)updateLrcTableView:(NSUInteger)lineNumber {
  // NSLog(@"lrc = %@", [LRCDictionary objectForKey:[timeArray objectAtIndex:lineNumber]]);
  //重新载入歌词列表lrcTabView
  lrcLineNumber = lineNumber;
  [self.lrcTableView reloadData];
  //使被选中的行移到中间
  NSIndexPath *indexPath = [NSIndexPath indexPathForRow:lineNumber inSection:0];
  [self.lrcTableView selectRowAtIndexPath:indexPath
  animated:YES
  scrollPosition:UITableViewScrollPositionMiddle];
  // NSLog(@"%i",lineNumber);
  }
- (void)didReceiveMemoryWarning
  {
  [super didReceiveMemoryWarning];
}

@end
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原文地址：https://www.cnblogs.com/wangdelong/p/3854223.html

音乐播放器（主界面）

import <UIKit/UIKit.h>

import <AVFoundation/AVFoundation.h>

import "MjMusicViewController.h"

import "DXSemiViewControllerCategory.h"

import <AVFoundation/AVFoundation.h>

define kLrcTableView 10001

pragma mark -

pragma mark dataSource

pragma mark -

pragma mark UITableView Delegate

pragma mark -

pragma mark AVAudioPlayer Delegate

pragma mark -

pragma mark 方法回调

pragma mark 得到歌词

pragma mark 动态显示歌词

pragma mark 动态更新歌词表歌词