音樂播放器（主介面）

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import import

@interface MjMusicViewController : UIViewController{ NSInteger controlPlayStyle; NSInteger controlPlay; NSMutableArray *timeArray; NSMutableDictionary *LRCDictionary; NSUInteger lrcLineNumber;}

@end

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import "MjMusicViewController.h"import "DXSemiViewControllerCategory.h"import 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 = @[@"光輝歲月",@"Never Give Up",@"怒放的生命",@"你給我聽好",@"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];

// 為了顯示歌詞

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];

// 初始化歌詞 [self initLRC];

[NSTimer scheduledTimerWithTimeInterval:0.1                                 target:self                               selector:@selector(onTimer:)                               userInfo:nil repeats:YES];self.soundURL = [[NSBundle mainBundle] URLForResource:@"光輝歲月" 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 = @"光輝歲月";

// 初始化Slider self.sliderProgress.minimumValue = 0.0; self.sliderProgress.maximumValue = self.audioPlayer.duration; [self.sliderProgress setThumbImage:[UIImage imageNamed:@"mvvoiceSliderThumb"] forState:UIControlStateNormal]; [self.sliderVolume setThumbImage:[UIImage imageNamed:@"mvvoiceSliderThumb"] forState:UIControlStateNormal]; //格式化label顯示時間 [self ruleTimeLabel:self.labelAllTime andTime:self.audioPlayer.duration];

//添加UISongTableViewCGRect 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];

// 添加手勢 UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc ] initWithTarget:self action:@selector(onSingleTap:)]; // 表示多點觸摸時的手指數量 tapGesture.numberOfTouchesRequired = 1; // 表示輕拍的次數，現在一個手指輕拍一次，也就是單擊的動作 tapGesture.numberOfTapsRequired = 1; // 為視圖view添加上手勢的動作處理 [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;//該表格選中後沒有顏色 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 方法回調

• (void)onTimer:(NSTimer *)timer{self.sliderProgress.value = self.audioPlayer.currentTime;[self ruleTimeLabel:self.labelProgressTime andTime:self.audioPlayer.currentTime];//調用歌詞函數[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;}

//播放暫停控制按鈕- (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);

}

//全部隨機播放- (IBAction)onSongRudomBtn:(id)sender {// if (controlPlayStyle == 2) {// controlPlayStyle = YES;// [self.playStyleBtn setBackgroundImage:[UIImage imageNamed:@"moderandplay"]// forState:UIControlStateNormal];// }else if(controlPlayStyle == 3)// {// controlPlayStyle = NO;// [self.playStyleBtn setBackgroundImage:[UIImage imageNamed:@"modeorderplay"]// forState:UIControlStateNormal];// } switch (controlPlayStyle) { case 1: [self.playStyleBtn setBackgroundImage:[UIImage imageNamed:@"modeorderplay"] forState:UIControlStateNormal]; controlPlay = 1; controlPlayStyle = 2; break; case 2: [self.playStyleBtn setBackgroundImage:[UIImage imageNamed:@"moderandplay"] 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; }}

//手勢- (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];}

//順序播放- (void)sequencePlay{

    if (self.musicNum == self.songsDataSource.count - 1) {        self.musicNum = 0;        [self changeToPlay];    }else{        self.musicNum += 1;        [self changeToPlay];    }

}

//全部隨機播放- (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];

}

//時間格式- (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 得到歌詞

• (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:@"\n"];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)];//分割區間求歌詞時間 //把時間 和 歌詞 加入詞典 [LRCDictionary setObject:lrcStr forKey:timeStr]; [timeArray addObject:timeStr];//timeArray的count就是行數 } }}}

  pragma mark 動態顯示歌詞

• (void)displaySondWord:(NSUInteger)time {// NSLog(@"time = %u",time);for (int i = 0; i < [timeArray count]; i++) {

  NSArray *array = [timeArray[i] componentsSeparatedByString:@":"];//把時間轉換成秒NSUInteger currentTime = [array[0] intValue] * 60 + [array[1] intValue];if (i == [timeArray count]-1) {    //求最後一句歌詞的時間點    NSArray *array1 = [timeArray[timeArray.count-1] componentsSeparatedByString:@":"];    NSUInteger currentTime1 = [array1[0] intValue] * 60 + [array1[1] intValue];    if (time > currentTime1) {        [self updateLrcTableView:i];        break;    }} else {    //求出第一句的時間點，在第一句顯示前的時間內一直載入第一句    NSArray *array2 = [timeArray[0] componentsSeparatedByString:@":"];    NSUInteger currentTime2 = [array2[0] intValue] * 60 + [array2[1] intValue];    if (time < currentTime2) {        [self updateLrcTableView:0];        //                NSLog(@"馬上到第一句");        break;    }    //求出下一步的歌詞時間點，然後計算區間    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 動態更新歌詞表歌詞

• (void)updateLrcTableView:(NSUInteger)lineNumber {// NSLog(@"lrc = %@", [LRCDictionary objectForKey:[timeArray objectAtIndex:lineNumber]]);//重新載入 歌詞列表lrcTabViewlrcLineNumber = lineNumber;[self.lrcTableView reloadData];//使被選中的行移到中間NSIndexPath *indexPath = [NSIndexPath indexPathForRow:lineNumber inSection:0];[self.lrcTableView selectRowAtIndexPath:indexPath animated:YES scrollPosition:UITableViewScrollPositionMiddle];// NSLog(@"%i",lineNumber);}

• (void)didReceiveMemoryWarning{[super didReceiveMemoryWarning];

}

@end