yunjingIOS/ybvideoios/YBVideo/录制_编辑_发布/音乐/YBVideoMusicView.m

#import "YBVideoMusicView.h"

#import "MusicModel.h"
#import "MusicCell.h"
#import "NSString+StringSize.h"
#import "TCVideoRecordViewController.h"
#import "MusicHeaderView.h"
#import "MusicClassVC.h"
#import "JCHATAlertViewWait.h"
#import <MediaPlayer/MediaPlayer.h>
@interface YBVideoMusicView ()<UITableViewDataSource,UITableViewDelegate,UISearchBarDelegate> {
    
    UIButton *btn;
    CGFloat classHeight;            //分类的高度
    int _paging;
    AVAudioPlayer *_musicPlayer;    //音乐播放器
    
    BOOL _isSearch;                 //当前显示 是否是 搜索
    BOOL _isColl;                   //NO - 当前显示是top10  YES - 当前显示是收藏
    
    CGFloat _originVolume;          //记录系统音量
    MPVolumeView *_volumeView;
    UISlider *_volumeViewSlider;
    BOOL _changeVolume;
    
}
@property(nonatomic,strong)UIView *searchBg;                //搜索框背景
@property(nonatomic,strong)UISearchBar *search;

@property(nonatomic,strong)MusicHeaderView *musicClassV;    //音乐分类

/** 记录 cell 是否打开 */
@property (nonatomic, assign) BOOL isOpen;
/** 记录当前点击的 cell 行数 */
@property (nonatomic, assign) int curRow;

@property(nonatomic,strong)UITableView *tableView;
@property(nonatomic,strong)NSArray *models;
@property(nonatomic,strong)NSMutableArray *allArray;

@end
@implementation YBVideoMusicView

-(void)creatVoluem {
    if (_volumeViewSlider == nil) {
        _volumeView = [[MPVolumeView alloc] initWithFrame:CGRectMake(-100, -100, 40, 40)];
        [self.view addSubview:_volumeView];
        for (UIView* newView in _volumeView.subviews) {
            if ([newView.class.description isEqualToString:@"MPVolumeSlider"]){
                _volumeViewSlider = (UISlider*)newView;
                break;
            }
        }
    }
    [_volumeView setHidden:NO];
    [_volumeView setShowsRouteButton:YES];
    [_volumeView setShowsVolumeSlider:YES];
}
-(void)recoveryVolume{
    if (_changeVolume) {
        _changeVolume = NO;
        _volumeViewSlider.value = _originVolume ;
    }
}
-(void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
    if ([PublicObj getSysOutputVolume] < 0.2) {
        _changeVolume = YES;
        _originVolume = [AVAudioSession sharedInstance].outputVolume;
        _volumeViewSlider.value = 0.3;
    }
}
-(void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
    //指示器消失
    [PublicView indictorHide];
    
}

-(void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:animated];
    //指示器消失
    [PublicView indictorHide];
    _isSearch = NO;
    _search.text = @"";
    [self resetAttribute];
    [self recoveryHeight];
    if (_isColl == NO) {
        //重新加载热门
        [self pullTopTenMusic];
    }else{
        [self pullCollectMusic];
    }
}

- (void)viewDidLoad {
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor whiteColor];
    self.navigationController.navigationBarHidden = YES;

    self.naviView.hidden = YES;
    [UIApplication sharedApplication].statusBarHidden = NO;
    [self creatVoluem];
    [self creatNavi];
    _paging = 1;
    _isSearch = NO;
    _isColl = NO;
    self.curRow = -1;
    self.allArray = [NSMutableArray array];
    self.models = [NSArray array];
    
    [self.view addSubview:self.searchBg];
    [self.view addSubview:self.musicClassV];
    [self.view addSubview:self.tableView];
    
}
-(void)resetAttribute {
    self.isOpen = NO;
    self.curRow = -1;
    _paging = 1;
    self.allArray = nil;
    self.allArray = [NSMutableArray array];
    [self.tableView reloadData];
}
#pragma mark - top10
-(void)pullTopTenMusic {
    
    YBWeakSelf;
    [YBNetworking postWithUrl:@"Music.hotLists" Dic:nil Suc:^(int code, id info, NSString *msg) {
        [_tableView.mj_header endRefreshing];
        [_tableView.mj_footer endRefreshing];
        if (code == 0) {
            NSArray *infoA = [NSArray arrayWithArray:info];
            if (_paging == 1) {
                [self.allArray removeAllObjects];
            }
            if (infoA.count<=0) {
                [_tableView.mj_footer endRefreshingWithNoMoreData];
            }else {
                [self.allArray addObjectsFromArray:infoA];
            }
            if (self.allArray.count==0) {
                [PublicView showTextNoData:weakSelf.tableView text1:YZMsg(@"对不起") text2:YZMsg(@"没有搜索到相关内容") centerY:0.8];
            }else{
                [PublicView hiddenTextNoData:weakSelf.tableView];
            }
            [self.tableView reloadData];
        }else{
            [PublicView showTextNoData:weakSelf.tableView text1:YZMsg(@"对不起") text2:YZMsg(@"没有搜索到相关内容") centerY:0.8];
            [MBProgressHUD showPop:msg];
        }
    } Fail:^(id fail) {
        [_tableView.mj_header endRefreshing];
        [_tableView.mj_footer endRefreshing];
    }];
    
}
#pragma mark 收藏
-(void)pullCollectMusic {
    
    YBWeakSelf;
    [YBNetworking postWithUrl:@"Music.getCollectMusicLists" Dic:@{@"p":@(_paging)} Suc:^(int code, id info, NSString *msg) {
        [_tableView.mj_header endRefreshing];
        [_tableView.mj_footer endRefreshing];
        if (code == 0) {
            NSArray *infoA = [NSArray arrayWithArray:info];
            if (_paging == 1) {
                [self.allArray removeAllObjects];
            }
            if (infoA.count<=0) {
                [_tableView.mj_footer endRefreshingWithNoMoreData];
            }else {
                [self.allArray addObjectsFromArray:infoA];
            }
            if (self.allArray.count==0) {
                [PublicView showTextNoData:weakSelf.tableView text1:@"" text2:YZMsg(@"没有收藏音乐") centerY:0.8];
            }else{
                [PublicView hiddenTextNoData:weakSelf.tableView];
            }
            [self.tableView reloadData];
        }else{
            [PublicView showTextNoData:weakSelf.tableView text1:@"" text2:YZMsg(@"没有收藏音乐") centerY:0.8];
            [MBProgressHUD showPop:msg];
        }
    } Fail:^(id fail) {
        [_tableView.mj_header endRefreshing];
        [_tableView.mj_footer endRefreshing];
    }];
}
#pragma mark - 搜索
-(void)pullSearchMusic {
    NSString *url = [NSString stringWithFormat:@"Music.searchMusic&key=%@&p=%d&uid=%@",self.search.text,_paging,[Config getOwnID]];
    url = [url stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];
    YBWeakSelf;
    [YBNetworking postWithUrl:url Dic:nil Suc:^(int code, id info, NSString *msg) {
        [_tableView.mj_header endRefreshing];
        [_tableView.mj_footer endRefreshing];
        if (code == 0) {
            //指示器消失
            [PublicView indictorHide];
            NSArray *infoA = [NSArray arrayWithArray:info];
            if (_paging == 1) {
                [self.allArray removeAllObjects];
            }
            if (infoA.count<=0) {
                [_tableView.mj_footer endRefreshingWithNoMoreData];
            }else {
                [self.allArray addObjectsFromArray:infoA];
            }
            
            if (self.allArray.count ==0) {
                [PublicView showTextNoData:weakSelf.tableView text1:YZMsg(@"对不起") text2:YZMsg(@"没有搜索到相关内容") centerY:0.8];
            }else{
                [PublicView hiddenTextNoData:weakSelf.tableView];
            }
            [self.tableView reloadData];
        }else{
            [PublicView showTextNoData:weakSelf.tableView text1:YZMsg(@"对不起") text2:YZMsg(@"没有搜索到相关内容") centerY:0.8];
            [MBProgressHUD showPop:msg];
            //指示器消失
            [PublicView indictorHide];
        }
    } Fail:^(id fail) {
        //指示器消失
        [PublicView indictorHide];
        [_tableView.mj_header endRefreshing];
        [_tableView.mj_footer endRefreshing];
    }];
}
-(NSArray *)models{
    NSMutableArray *array = [NSMutableArray array];
    
    for (NSDictionary *dic in self.allArray) {
        MusicModel *model = [MusicModel modelWithDic:dic];
        [array addObject:model];
    }
    _models = array;
    return _models;
}

#pragma mark - 点击事件

-(void)keyHide{
    [self.search resignFirstResponder];
}

#pragma mark - 音乐播放、暂停
-(void)playMusic:(NSString *)path currentCell:(MusicCell *)cell currentIndex:(NSIndexPath*)indexPath{
    NSLog(@"播放");
    
    if (self.curRow !=indexPath.row) {
        //点击过cell并且非同一行时候，清除掉上一个播放器
        [self stopMusic];
    }
    
    if (!_musicPlayer) {
        //创建音乐播放器
        NSError *error = nil;
        _musicPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL fileURLWithPath:path] error:&error];
        //准备播放
        _musicPlayer.volume = 0.8;
        [_musicPlayer prepareToPlay];
        //播放歌曲
        [_musicPlayer play];
        _musicPlayer.numberOfLoops = -1;
        [cell.StateBtn setImage:[UIImage imageNamed:@"music_pause"] forState:0];
    }else {
        if (_musicPlayer.isPlaying) {
             [_musicPlayer pause];
            [cell.StateBtn setImage:[UIImage imageNamed:@"music_play"] forState:0];
        }else {
             [_musicPlayer play];
            [cell.StateBtn setImage:[UIImage imageNamed:@"music_pause"] forState:0];
        }
    }
}
-(void)stopMusic {
    if (_musicPlayer) {
        [_musicPlayer stop];
        _musicPlayer = nil;
    }
}

#pragma mark - tableview  UITableViewDataSource   UITableViewDelegate
//删除
//-(void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath{
//    
//    MusicModel *model = _models[indexPath.row];
//    NSFileManager* fileManager=[NSFileManager defaultManager];
//    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
//    NSString *docDir = [paths objectAtIndex:0];
//    NSString *loadPath = [docDir stringByAppendingFormat:@"/*%@*%@*%@*%@.mp3",model.musicNameStr,model.singerStr,model.timeStr,model.songID];
//    BOOL blHave=[[NSFileManager defaultManager] fileExistsAtPath:loadPath];
//    if (blHave) {
//        [fileManager removeItemAtPath:loadPath error:nil];
//        [self.tableView reloadData];
//        [MBProgressHUD showPop:@"音乐缓存清除成功"];
//    }else{
//        [MBProgressHUD showPop:@"音乐缓存为空"];
//    }
//    [self stopMusic];
//    
//}

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    
    return self.models.count;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    
    MusicCell *cell = [MusicCell cellWithTab:tableView andIndexPath:indexPath];
    //10-31添加
    (self.curRow == (int)indexPath.row && self.isOpen) ? (cell.startRecoedBtn.hidden = NO) : (cell.startRecoedBtn.hidden = YES);
    
    cell.backgroundColor = [UIColor whiteColor];
    MusicModel *model = _models[indexPath.row];
    cell.model = model;
    cell.selectionStyle = UITableViewCellSelectionStyleNone;
    YBWeakSelf;
    //回调事件处理
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *docDir = [paths objectAtIndex:0];
    NSString *loadPath = [docDir stringByAppendingFormat:@"/*%@*%@*%@*%@.mp3",model.musicNameStr,model.singerStr,model.timeStr,model.songID];
    cell.recordEvent = ^(NSString *type) {
        //停止播放音乐
        [weakSelf stopMusic];
        //开拍之前()---开拍之后(编辑页面)
        if ([_fromWhere isEqual:@"edit"]) {
            [self recoveryVolume];
            //回调音频路径
            if (weakSelf.pathEvent) {
                weakSelf.pathEvent(loadPath, model.songID);
            }
            [weakSelf dismissViewControllerAnimated:YES completion:nil];
        }else{
            TCVideoRecordViewController *videoRecord = [TCVideoRecordViewController new];
            videoRecord.musicPath = loadPath;
            videoRecord.musicID = model.songID;
            videoRecord.haveBGM = YES;
            YBNavigationController *nav = [[YBNavigationController alloc]initWithRootViewController:videoRecord];
            nav.navigationBarHidden = YES;
            nav.modalPresentationStyle = 0;
            [self presentViewController:nav animated:YES completion:nil];
        }
    };
    __weak MusicCell *weakCell = cell;
    cell.rsEvent = ^(NSString *rs, NSString *erro) {
        if ([rs isEqual:@"sucess"]) {
            [weakSelf stopMusic];
             [weakSelf playMusic:loadPath currentCell:weakCell currentIndex:indexPath];
        }else{
            [MBProgressHUD showPop:erro];
        }
        [[JCHATAlertViewWait ins] hidenAll];
    };
    cell.selectedBackgroundView = [[UIImageView alloc]initWithImage:[PublicObj getImgWithColor:SelCell_Col]];
    return cell;
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    [self.tableView deselectRowAtIndexPath:indexPath animated:YES];
    
    MusicCell *cell = (MusicCell *)[tableView cellForRowAtIndexPath:indexPath];
    MusicModel *model = _models[indexPath.row];
    if (self.curRow == (int)indexPath.row) {
        self.curRow = -99999;
        self.isOpen = NO;
        [self stopMusic];
        [tableView reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationNone];
        return;
    }else{
        self.isOpen = YES;
    }
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *docDir = [paths objectAtIndex:0];
    NSString *loadPath = [docDir stringByAppendingFormat:@"/*%@*%@*%@*%@.mp3",model.musicNameStr,model.singerStr,model.timeStr,model.songID];
    NSFileManager *manager = [NSFileManager defaultManager];
    if ([manager fileExistsAtPath:loadPath]) {
        //已下载
        [self playMusic:loadPath currentCell:cell currentIndex:indexPath];
    }else{
        [[JCHATAlertViewWait ins] showInView];
        //下载歌曲
        [cell musicDownLoad];
    }
    //处理显示、隐藏开拍按钮
    if (self.curRow == (int)indexPath.row) {
        return;
    }
    MusicCell *lastCell = (MusicCell *)[tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:self.curRow inSection:0]];
    [lastCell.StateBtn setImage:[UIImage imageNamed:@"music_play"] forState:0];
    self.isOpen = YES;
    self.curRow = (int)indexPath.row;
    
    /** 刷新tableView，系统默认会有一个自带的动画 */
    [tableView beginUpdates];
    
    //10-31添加
    lastCell.startRecoedBtn.hidden = YES;
    cell.startRecoedBtn.hidden = NO;
    //(self.curRow == (int)indexPath.row && self.isOpen) ? (cell.startRecoedBtn.hidden = NO) : (cell.startRecoedBtn.hidden = YES);
    
    [tableView endUpdates];
    
}

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
    //普通cell 80 播放音乐+50
    return (self.curRow == (int)indexPath.row && self.isOpen) ? 130 : 80;
}
-(void)scrollViewDidScroll:(UIScrollView *)scrollView{
    [self.search resignFirstResponder];
}

#pragma mark - 搜索关键词/清除关键词 更改分类以及tableview的高度
-(void)reduceHeight {
    _musicClassV.frame = CGRectMake(0, _searchBg.bottom+5, _window_width, 0);
    _tableView.frame = CGRectMake(0,_musicClassV.bottom, _window_width, _window_height-64-statusbarHeight-ShowDiff-_searchBg.height-_musicClassV.height-5);
}
-(void)recoveryHeight {
    _musicClassV.frame = CGRectMake(0, _searchBg.bottom+5, _window_width, classHeight);
    _tableView.frame = CGRectMake(0,_musicClassV.bottom, _window_width, _window_height-64-statusbarHeight-ShowDiff-_searchBg.height-_musicClassV.height-5);
}

#pragma mark - 搜索框
-(void)clickClearBtn {
    _isSearch = NO;
    [self recoveryHeight];
    if (_isColl == NO) {
        //重新加载热门
        [self pullTopTenMusic];
    }else{
        [self pullCollectMusic];
    }
}

-(void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar{
    
}
-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText {
    //一个一个字清空搜索框的时候
    if (searchText.length==0) {
        _isSearch = NO;
        [self recoveryHeight];
        if (_isColl == NO) {
            //重新加载热门
            [self pullTopTenMusic];
        }else{
            [self pullCollectMusic];
        }
    }else{
        
        _isSearch = YES;
    }
}
-(void)searchBarTextDidEndEditing:(UISearchBar *)searchBar{
    [searchBar resignFirstResponder];
}
-(void)searchBarSearchButtonClicked:(UISearchBar *)searchBar{
    _isSearch = YES;
    [self reduceHeight];
    //指示器显示
    [PublicView indictorShow];
    
    [searchBar resignFirstResponder];
//    self.allArray = nil;
//    self.allArray = [NSArray array];
//    [self.tableView reloadData];
    //重置部分属性
    [self resetAttribute];
    
    [self pullSearchMusic];
    
}

#pragma mark - set/get
-(UIView *)searchBg {
    if (!_searchBg) {
        _searchBg = [[UIView alloc]initWithFrame:CGRectMake(0,64+statusbarHeight,_window_width,44)];
        _searchBg.backgroundColor = [UIColor whiteColor];
        
        _search = [[UISearchBar alloc]initWithFrame:CGRectMake(0,0, _window_width,44)];
        _search.backgroundImage = [PublicObj getImgWithColor:[UIColor whiteColor]];
        _search.placeholder = YZMsg(@"搜索歌曲名称");
        _search.delegate = self;
        UITextField *textField ;
        if (@available(iOS 13.0,*)) {
            textField = _search.searchTextField;
        }else {
           textField = [_search valueForKey:@"_searchField"];
        }
        [textField setBackgroundColor:RGB_COLOR(@"#f9fafb", 1)];
//        [textField setValue:GrayText forKeyPath:@"_placeholderLabel.textColor"];
//        [textField setValue:[UIFont systemFontOfSize:16] forKeyPath:@"_placeholderLabel.font"];
        UIButton *clearBtn = [textField valueForKey:@"_clearButton"];
        [clearBtn addTarget:self action:@selector(clickClearBtn) forControlEvents:UIControlEventTouchUpInside];
        textField.textColor = GrayText;
        textField.layer.cornerRadius = 18;
        textField.layer.masksToBounds = YES;
        [_searchBg addSubview:_search];
    }
    return _searchBg;
}
- (MusicHeaderView *)musicClassV {
    if (!_musicClassV) {
        //5个像素空隙
        classHeight = _window_width/5.5+60;
        YBWeakSelf;
        _musicClassV = [[MusicHeaderView alloc]initWithFrame:CGRectMake(0, _searchBg.bottom+5, _window_width, classHeight) withBlock:^(NSString *type, NSString *title) {
            //停止播放音乐
            [weakSelf stopMusic];
            
            MusicClassVC *classVC = [[MusicClassVC alloc]init];
            classVC.navi_title = title;
            classVC.class_id = type;
            if ([_fromWhere isEqual:@"edit"]) {
                classVC.fromWhere = _fromWhere;
            }
            classVC.backEvent = ^(NSString *type, NSString *loadPath, NSString *songID) {
                [weakSelf recoveryVolume];
                //从音乐分类中返回事件
                if (weakSelf.pathEvent && [type isEqual:@"分类音乐"]) {
                    weakSelf.pathEvent(loadPath, songID);
                }
                [weakSelf dismissViewControllerAnimated:YES completion:nil];
                
            };
            [weakSelf.navigationController pushViewController:classVC animated:YES];
        }];
        
        _musicClassV.segEvent = ^(NSString *type) {
            //重置部分属性
            [weakSelf resetAttribute];
            [weakSelf stopMusic];
            if ([type isEqual:@"热门"]) {
                _isColl = NO;
                [weakSelf pullTopTenMusic];
            }else{//收藏
                _isColl = YES;
                [weakSelf pullCollectMusic];
            }
        };
        
    }
    return _musicClassV;
}
- (UITableView *)tableView {
    if (!_tableView) {
        _tableView = [[UITableView alloc]initWithFrame:CGRectMake(0,_musicClassV.bottom, _window_width, _window_height-64-statusbarHeight-ShowDiff-_searchBg.height-_musicClassV.height-5) style:UITableViewStylePlain];
        _tableView.dataSource = self;
        _tableView.delegate = self;
        _tableView.backgroundColor = [UIColor whiteColor];
        _tableView.separatorStyle = UITableViewCellAccessoryNone;
        
        _tableView.mj_header = [MJRefreshNormalHeader headerWithRefreshingBlock:^{
            _paging = 1;
            if (_isSearch == YES) {
                [self pullSearchMusic];
            }else{
                if (_isColl == YES) {
                    [self pullCollectMusic];
                }else{
                    [self pullTopTenMusic];
                }
            }
        }];
        
        _tableView.mj_footer = [MJRefreshBackNormalFooter footerWithRefreshingBlock:^{
            _paging +=1;
            if (_isSearch == YES) {
                [self pullSearchMusic];
            }else{
                if (_isColl == YES) {
                    [self pullCollectMusic];
                }else{
                    //top10没有分页
                    _paging = 1;
                    [self pullTopTenMusic];
                }
            }
        }];
        
        UISwipeGestureRecognizer *swip = [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(keyHide)];
        swip.direction = UISwipeGestureRecognizerDirectionDown|UISwipeGestureRecognizerDirectionUp;
        [_tableView addGestureRecognizer:swip];
    }
    return _tableView;
}

#pragma mark - 导航
-(void)creatNavi {
    
    
    UIView *navi = [[UIView alloc]initWithFrame:CGRectMake(0, 0, _window_width, 64+statusbarHeight)];
    navi.backgroundColor = Normal_Color;
    [self.view addSubview:navi];
    
    UIView *bgView = [[UIView alloc]initWithFrame:CGRectMake(0, statusbarHeight+20,_window_width ,44)];
    bgView.backgroundColor = [UIColor whiteColor];
    [navi addSubview:bgView];
    UIBezierPath * maskPath = [UIBezierPath bezierPathWithRoundedRect:bgView.bounds byRoundingCorners:UIRectCornerTopRight|UIRectCornerTopLeft cornerRadii:CGSizeMake(5, 5)];
    CAShapeLayer * maskLayer = [[CAShapeLayer alloc]init];
    maskLayer.frame = bgView.bounds;
    maskLayer.path = maskPath.CGPath;
    bgView.layer.mask = maskLayer;
    
    UIButton *leftBtn = [UIButton buttonWithType:UIButtonTypeCustom];
    [leftBtn setImage:[UIImage imageNamed:@"gray_close"] forState:0];//pub_back
    leftBtn.frame = CGRectMake(0, 12+statusbarHeight, 50, 50);
    leftBtn.imageEdgeInsets = UIEdgeInsetsMake(20, 16, 12, 16);
    [leftBtn addTarget:self action:@selector(clickBackBtn) forControlEvents:UIControlEventTouchUpInside];
    [navi addSubview:leftBtn];
    
    CGFloat top_space = 22+statusbarHeight;
    if (IS_IPHONE_X) {
        top_space = 18+statusbarHeight;
    }
    UILabel *midL = [[UILabel alloc]initWithFrame:CGRectMake(50, top_space, _window_width-100, 40)];
    midL.text = YZMsg(@"选择音乐");
    midL.textColor = [UIColor blackColor];
    midL.font = SYS_Font(17);
    midL.textAlignment = NSTextAlignmentCenter;
    [navi addSubview:midL];
   
}
-(void)clickBackBtn {
    [self recoveryVolume];
    //停止播放音乐
    [self stopMusic];
    [self dismissViewControllerAnimated:YES completion:nil];
    [self.navigationController popViewControllerAnimated:YES];
}
-(void)dealloc{

}
@end