首页 > 代码库 > iOS开发拓展篇—音频处理（音乐播放器5）
iOS开发拓展篇—音频处理（音乐播放器5）
iOS开发拓展篇—音频处理（音乐播放器5）
实现效果：
一、半透明滑块的设置
1 /** 2 *拖动滑块 3 */ 4 - (IBAction)panSlider:(UIPanGestureRecognizer *)sender { 5 6 //1.获得挪动的距离 7 CGPoint t=[sender translationInView:sender.view]; 8 //把挪动清零 9 [sender setTranslation:CGPointZero inView:sender.view];10 11 //2.控制滑块和进度条的frame12 CGFloat sliderMaxX=self.view.width-self.slider.width;13 self.slider.x+=t.x;14 //控制滑块的frame，不让其越界15 if(self.slider.x<0)16 {17 self.slider.x=0;18 }else if (self.slider.x>sliderMaxX)19 {20 self.slider.x=sliderMaxX;21 }22 //设置进度条的宽度23 self.progressView.width=self.slider.center.x;24 25 //3.设置时间值26 double progress=self.slider.x/sliderMaxX;27 //当前的时间值=音乐的时长*当前的进度值28 NSTimeInterval time=self.player.duration*progress;29 [self.slider setTitle:[self strWithTime:time] forState:UIControlStateNormal];30 31 //设置拖拽进度的X的值32 self.currentTimeView.x=self.slider.x;33 [self.currentTimeView setTitle:self.slider.currentTitle forState:UIControlStateNormal];34 35 //4.如果开始拖动，那么就停止定时器36 if (sender.state==UIGestureRecognizerStateBegan) {37 //停止定时器38 [self removeCurrentTime];39 40 //设置拖拽进度41 //显示42 self.currentTimeView.hidden=NO;43 self.currentTimeView.y=self.currentTimeView.superview.height-5-self.currentTimeView.height;44 45 }else if(sender.state==UIGestureRecognizerStateEnded)46 {47 //隐藏48 self.currentTimeView.hidden=YES;49 //设置播放器播放的时间50 self.player.currentTime=time;51 #warning 如果正在播放，才需要添加定时器52 // if (self.player.isPlaying) {53 //开启定时器54 [self addCurrentTimeTimer];55 // }56 }57 }
裁剪圆角的细节处理：
二、播放或暂停、上一首、下一首的实现
1 //上一首 2 - (IBAction)previous { 3 //1.在开始播放之前，禁用一切的app点击事件 4 UIWindow *window=[[UIApplication sharedApplication].windows lastObject]; 5 window.userInteractionEnabled=NO; 6 7 //2.重置当前歌曲 8 [self resetPlayingMusic]; 9 10 //3.获得上一首歌曲11 [YYMusicTool setPlayingMusic:[YYMusicTool previousMusic]];12 13 //4.播放上一首歌曲14 [self starPlayingMusic];15 16 //5.回复window的点击为可用17 window.userInteractionEnabled=YES;18 }19 //下一首20 - (IBAction)next {21 //1.在开始播放之前，禁用一切的app点击事件22 UIWindow *window=[[UIApplication sharedApplication].windows lastObject];23 window.userInteractionEnabled=NO;24 25 //2.重置当前歌曲26 [self resetPlayingMusic];27 28 //3.获得下一首歌曲29 [YYMusicTool setPlayingMusic:[YYMusicTool nextMusic]];30 31 //4.播放下一首歌曲32 [self starPlayingMusic];33 34 //5.回复window的点击为可用35 window.userInteractionEnabled=YES;36 }37 38 //继续或暂停播放39 - (IBAction)playOrPause {40 if (self.playOrPauseButton.isSelected) {//暂停41 self.playOrPauseButton.selected=NO;42 //暂停播放43 [YYAudioTool pauseMusic:self.playingMusic.filename];44 //停掉定时器45 [self removeCurrentTime];46 }else47 {48 self.playOrPauseButton.selected=YES;49 //继续播放50 [YYAudioTool playMusic:self.playingMusic.filename];51 //开启定时器52 [self addCurrentTimeTimer];53 }54 }
说明：播放和暂停按钮的图片设置在两种状态下并不一样，设置播放按钮的状态
三、对存在的bug进行改进
拖拽还存在问题（定时器的问题）
更好的方法时在添加定时器的地方进行更细的控制：
1 /** 2 * 添加一个定时器 3 */ 4 -(void)addCurrentTimeTimer 5 { 6 //如果当前没有在播放，那么就直接返回 7 if (self.player.isPlaying==NO) return; 8 9 //在添加一个定时器之前，先把以前的定时器移除10 [self removeCurrentTime];11 12 //提前先调用一次进度更新，以保证定时器的工作时及时的13 [self updateCurrentTime];14 15 //创建一个定时器，每一秒钟调用一次16 self.CurrentTimeTimer=[NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(updateCurrentTime) userInfo:nil repeats:YES];17 //把定时器加入到运行时中18 [[NSRunLoop mainRunLoop]addTimer:self.CurrentTimeTimer forMode:NSRunLoopCommonModes];19 }
四、补充
完整的代码如下：
1 // 2 // YYPlayingViewController.m 3 // 20-音频处理（音乐播放器1） 4 // 5 // Created by apple on 14-8-13. 6 // Copyright (c) 2014年 yangyong. All rights reserved. 7 // 8 9 #import "YYPlayingViewController.h" 10 #import "YYMusicTool.h" 11 #import "YYMusicModel.h" 12 #import "YYAudioTool.h" 13 14 @interface YYPlayingViewController () 15 //显示拖拽进度 16 @property (weak, nonatomic) IBOutlet UIButton *currentTimeView; 17 //进度条 18 @property (weak, nonatomic) IBOutlet UIView *progressView; 19 //滑块 20 @property (weak, nonatomic) IBOutlet UIButton *slider; 21 @property (weak, nonatomic) IBOutlet UIImageView *iconView; 22 @property (weak, nonatomic) IBOutlet UILabel *songLabel; 23 @property (weak, nonatomic) IBOutlet UILabel *singerLabel; 24 //当前播放的音乐的时长 25 @property (weak, nonatomic) IBOutlet UILabel *durationLabel; 26 //正在播放的音乐 27 @property(nonatomic,strong)YYMusicModel *playingMusic; 28 //音乐播放器对象 29 @property(nonatomic,strong)AVAudioPlayer *player; 30 //定时器 31 @property(nonatomic,strong)NSTimer *CurrentTimeTimer; 32 - (IBAction)exit; 33 - (IBAction)tapProgressBg:(UITapGestureRecognizer *)sender; 34 - (IBAction)panSlider:(UIPanGestureRecognizer *)sender; 35 - (IBAction)previous; 36 - (IBAction)playOrPause; 37 - (IBAction)next; 38 @property (weak, nonatomic) IBOutlet UIButton *playOrPauseButton; 39 40 @end 41 42 @implementation YYPlayingViewController 43 44 -(void)viewDidLoad 45 { 46 [super viewDidLoad]; 47 48 //裁剪圆角 49 self.currentTimeView.layer.cornerRadius=8; 50 51 } 52 #pragma mark-公共方法 53 -(void)show 54 { 55 //1.禁用整个app的点击事件 56 UIWindow *window=[UIApplication sharedApplication].keyWindow; 57 window.userInteractionEnabled=NO; 58 59 //2.添加播放界面 60 //设置View的大小为覆盖整个窗口 61 self.view.frame=window.bounds; 62 //设置view显示 63 self.view.hidden=NO; 64 //把View添加到窗口上 65 [window addSubview:self.view]; 66 67 //3.检测是否换了歌曲 68 if (self.playingMusic!=[YYMusicTool playingMusic]) { 69 [self resetPlayingMusic]; 70 } 71 72 //4.使用动画让View显示 73 self.view.y=self.view.height; 74 [UIView animateWithDuration:0.25 animations:^{ 75 self.view.y=0; 76 } completion:^(BOOL finished) { 77 78 //设置音乐数据 79 [self starPlayingMusic]; 80 window.userInteractionEnabled=YES; 81 }]; 82 } 83 84 85 #pragma mark-私有方法 86 //重置正在播放的音乐 87 -(void)resetPlayingMusic 88 { 89 //1.重置界面数据 90 self.iconView.image=[UIImage imageNamed:@"play_cover_pic_bg"]; 91 self.songLabel.text=nil; 92 self.singerLabel.text=nil; 93 94 //2.停止播放 95 [YYAudioTool stopMusic:self.playingMusic.filename]; 96 //把播放器进行清空 97 self.player=nil; 98 99 //3.停止定时器100 [self removeCurrentTime];101 102 //4.设置音乐播放按钮的状态103 self.playOrPauseButton.selected=NO;104 }105 //开始播放音乐数据106 -(void)starPlayingMusic107 {108 //1.设置界面数据109 110 //如果当前播放的音乐就是传入的音乐，那么就直接返回111 if (self.playingMusic==[YYMusicTool playingMusic])112 {113 //把定时器加进去114 [self addCurrentTimeTimer];115 return;116 }117 //存取音乐118 self.playingMusic=[YYMusicTool playingMusic];119 self.iconView.image=[UIImage imageNamed:self.playingMusic.icon];120 self.songLabel.text=self.playingMusic.name;121 self.singerLabel.text=self.playingMusic.singer;122 123 //2.开始播放124 self.player = [YYAudioTool playMusic:self.playingMusic.filename];125 126 //3.设置时长127 //self.player.duration; 播放器正在播放的音乐文件的时间长度128 self.durationLabel.text=[self strWithTime:self.player.duration];129 130 //4.添加定时器131 [self addCurrentTimeTimer];132 133 //5.设置音乐播放按钮的状态134 self.playOrPauseButton.selected=YES;135 }136 137 /**138 *把时间长度-->时间字符串139 */140 -(NSString *)strWithTime:(NSTimeInterval)time141 {142 int minute=time / 60;143 int second=(int)time % 60;144 return [NSString stringWithFormat:@"%d:%d",minute,second];145 }146 147 #pragma mark-定时器控制148 /**149 * 添加一个定时器150 */151 -(void)addCurrentTimeTimer152 {153 //如果当前没有在播放，那么就直接返回154 if (self.player.isPlaying==NO) return;155 156 //在添加一个定时器之前，先把以前的定时器移除157 [self removeCurrentTime];158 159 //提前先调用一次进度更新，以保证定时器的工作时及时的160 [self updateCurrentTime];161 162 //创建一个定时器，每一秒钟调用一次163 self.CurrentTimeTimer=[NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(updateCurrentTime) userInfo:nil repeats:YES];164 //把定时器加入到运行时中165 [[NSRunLoop mainRunLoop]addTimer:self.CurrentTimeTimer forMode:NSRunLoopCommonModes];166 }167 /**168 *移除一个定时器169 */170 -(void)removeCurrentTime171 {172 [self.CurrentTimeTimer invalidate];173 174 //把定时器清空175 self.CurrentTimeTimer=nil;176 }177 178 /**179 * 更新播放进度180 */181 -(void)updateCurrentTime182 {183 //1.计算进度值184 double progress=self.player.currentTime/self.player.duration;185 186 //2.计算滑块的x值187 // 滑块的最大的x值188 CGFloat sliderMaxX=self.view.width-self.slider.width;189 self.slider.x=sliderMaxX*progress;190 //设置滑块上的当前播放时间191 [self.slider setTitle:[self strWithTime:self.player.currentTime] forState:UIControlStateNormal];192 193 //3.设置进度条的宽度194 self.progressView.width=self.slider.center.x;195 196 }197 198 #pragma mark-内部的按钮监听方法199 //返回按钮200 - (IBAction)exit {201 202 //0.移除定时器203 [self removeCurrentTime];204 //1.禁用整个app的点击事件205 UIWindow *window=[UIApplication sharedApplication].keyWindow;206 window.userInteractionEnabled=NO;207 208 //2.动画隐藏View209 [UIView animateWithDuration:0.25 animations:^{210 self.view.y=window.height;211 } completion:^(BOOL finished) {212 window.userInteractionEnabled=YES;213 //设置view隐藏能够节省一些性能214 self.view.hidden=YES;215 }];216 }217 218 /**219 *点击了进度条220 */221 - (IBAction)tapProgressBg:(UITapGestureRecognizer *)sender {222 //获取当前单击的点223 CGPoint point=[sender locationInView:sender.view];224 //切换歌曲的当前播放时间225 self.player.currentTime=(point.x/sender.view.width)*self.player.duration;226 //更新播放进度227 [self updateCurrentTime];228 }229 /**230 *拖动滑块231 */232 - (IBAction)panSlider:(UIPanGestureRecognizer *)sender {233 234 //1.获得挪动的距离235 CGPoint t=[sender translationInView:sender.view];236 //把挪动清零237 [sender setTranslation:CGPointZero inView:sender.view];238 239 //2.控制滑块和进度条的frame240 CGFloat sliderMaxX=self.view.width-self.slider.width;241 self.slider.x+=t.x;242 //控制滑块的frame，不让其越界243 if(self.slider.x<0)244 {245 self.slider.x=0;246 }else if (self.slider.x>sliderMaxX)247 {248 self.slider.x=sliderMaxX;249 }250 //设置进度条的宽度251 self.progressView.width=self.slider.center.x;252 253 //3.设置时间值254 double progress=self.slider.x/sliderMaxX;255 //当前的时间值=音乐的时长*当前的进度值256 NSTimeInterval time=self.player.duration*progress;257 [self.slider setTitle:[self strWithTime:time] forState:UIControlStateNormal];258 259 //设置拖拽进度的X的值260 self.currentTimeView.x=self.slider.x;261 [self.currentTimeView setTitle:self.slider.currentTitle forState:UIControlStateNormal];262 263 //4.如果开始拖动，那么就停止定时器264 if (sender.state==UIGestureRecognizerStateBegan) {265 //停止定时器266 [self removeCurrentTime];267 268 //设置拖拽进度269 //显示270 self.currentTimeView.hidden=NO;271 self.currentTimeView.y=self.currentTimeView.superview.height-5-self.currentTimeView.height;272 273 }else if(sender.state==UIGestureRecognizerStateEnded)274 {275 //隐藏276 self.currentTimeView.hidden=YES;277 //设置播放器播放的时间278 self.player.currentTime=time;279 #warning 如果正在播放，才需要添加定时器280 // if (self.player.isPlaying) {281 //开启定时器282 [self addCurrentTimeTimer];283 // }284 }285 }286 287 //上一首288 - (IBAction)previous {289 //1.在开始播放之前，禁用一切的app点击事件290 UIWindow *window=[[UIApplication sharedApplication].windows lastObject];291 window.userInteractionEnabled=NO;292 293 //2.重置当前歌曲294 [self resetPlayingMusic];295 296 //3.获得上一首歌曲297 [YYMusicTool setPlayingMusic:[YYMusicTool previousMusic]];298 299 //4.播放上一首歌曲300 [self starPlayingMusic];301 302 //5.回复window的点击为可用303 window.userInteractionEnabled=YES;304 }305 //下一首306 - (IBAction)next {307 //1.在开始播放之前，禁用一切的app点击事件308 UIWindow *window=[[UIApplication sharedApplication].windows lastObject];309 window.userInteractionEnabled=NO;310 311 //2.重置当前歌曲312 [self resetPlayingMusic];313 314 //3.获得下一首歌曲315 [YYMusicTool setPlayingMusic:[YYMusicTool nextMusic]];316 317 //4.播放下一首歌曲318 [self starPlayingMusic];319 320 //5.回复window的点击为可用321 window.userInteractionEnabled=YES;322 }323 //继续或暂停播放324 - (IBAction)playOrPause {325 if (self.playOrPauseButton.isSelected) {//暂停326 self.playOrPauseButton.selected=NO;327 //暂停播放328 [YYAudioTool pauseMusic:self.playingMusic.filename];329 //停掉定时器330 [self removeCurrentTime];331 }else332 {333 self.playOrPauseButton.selected=YES;334 //继续播放335 [YYAudioTool playMusic:self.playingMusic.filename];336 //开启定时器337 [self addCurrentTimeTimer];338 }339 }340 341 342 @end
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