音樂播放器

1 //
  2 //  YYPlayingViewController.m
  3 //  20-音頻處理（音樂播放器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 //顯示拖拽進度
 16 @property (weak, nonatomic) IBOutlet UIButton *currentTimeView;
 17 //進度條
 18 @property (weak, nonatomic) IBOutlet UIView *progressView;
 19 //滑塊
 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 //當前播放的音樂的時長
 25 @property (weak, nonatomic) IBOutlet UILabel *durationLabel;
 26 //正在播放的音樂
 27 @property(nonatomic,strong)YYMusicModel *playingMusic;
 28 //音樂播放器對象
 29 @property(nonatomic,strong)AVAudioPlayer *player;
 30 //定時器
 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     //裁剪圓角
 49     self.currentTimeView.layer.cornerRadius=8;
 50     
 51 }
 52 #pragma mark-公共方法
 53 -(void)show
 54 {
 55     //1.禁用整個app的點擊事件
 56     UIWindow *window=[UIApplication sharedApplication].keyWindow;
 57     window.userInteractionEnabled=NO;
 58     
 59     //2.添加播放界面
 60     //設置View的大小爲覆蓋整個窗口
 61     self.view.frame=window.bounds;
 62     //設置view顯示
 63     self.view.hidden=NO;
 64     //把View添加到窗口上
 65     [window addSubview:self.view];
 66     
 67     //3.檢測是否換了歌曲
 68     if (self.playingMusic!=[YYMusicTool playingMusic]) {
 69         [self resetPlayingMusic];
 70     }
 71     
 72     //4.使用動畫讓View顯示
 73     self.view.y=self.view.height;
 74     [UIView animateWithDuration:0.25 animations:^{
 75         self.view.y=0;
 76     } completion:^(BOOL finished) {
 77         
 78         //設置音樂數據
 79         [self starPlayingMusic];
 80         window.userInteractionEnabled=YES;
 81     }];
 82 }
 83 
 84 
 85 #pragma mark-私有方法
 86 //重置正在播放的音樂
 87 -(void)resetPlayingMusic
 88 {
 89     //1.重置界面數據
 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     //把播放器進行清空
 97     self.player=nil;
 98     
 99     //3.停止定時器
100     [self removeCurrentTime];
101     
102     //4.設置音樂播放按鈕的狀態
103     self.playOrPauseButton.selected=NO;
104 }
105 //開始播放音樂數據
106 -(void)starPlayingMusic
107 {
108     //1.設置界面數據
109     
110     //如果當前播放的音樂就是傳入的音樂，那麼就直接返回
111     if (self.playingMusic==[YYMusicTool playingMusic])
112     {
113         //把定時器加進去
114         [self addCurrentTimeTimer];
115         return;
116     }
117     //存取音樂
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.開始播放
124     self.player = [YYAudioTool playMusic:self.playingMusic.filename];
125     
126     //3.設置時長
127     //self.player.duration;  播放器正在播放的音樂文件的時間長度
128     self.durationLabel.text=[self strWithTime:self.player.duration];
129     
130     //4.添加定時器
131     [self addCurrentTimeTimer];
132     
133     //5.設置音樂播放按鈕的狀態
134     self.playOrPauseButton.selected=YES;
135 }
136 
137 /**
138  *把時間長度-->時間字符串
139  */
140 -(NSString *)strWithTime:(NSTimeInterval)time
141 {
142     int minute=time / 60;
143     int second=(int)time % 60;
144     return [NSString stringWithFormat:@"%d:%d",minute,second];
145 }
146 
147 #pragma mark-定時器控制
148 /**
149  *  添加一個定時器
150  */
151 -(void)addCurrentTimeTimer
152 {
153     //如果當前沒有在播放，那麼就直接返回
154     if (self.player.isPlaying==NO) return;
155     
156     //在添加一個定時器之前，先把以前的定時器移除
157     [self removeCurrentTime];
158     
159     //提前先調用一次進度更新，以保證定時器的工作時及時的
160     [self updateCurrentTime];
161     
162     //創建一個定時器，每一秒鐘調用一次
163     self.CurrentTimeTimer=[NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(updateCurrentTime) userInfo:nil repeats:YES];
164     //把定時器加入到運行時中
165     [[NSRunLoop mainRunLoop]addTimer:self.CurrentTimeTimer forMode:NSRunLoopCommonModes];
166 }
167 /**
168  *移除一個定時器
169  */
170 -(void)removeCurrentTime
171 {
172     [self.CurrentTimeTimer invalidate];
173     
174     //把定時器清空
175     self.CurrentTimeTimer=nil;
176 }
177 
178 /**
179  *  更新播放進度
180  */
181 -(void)updateCurrentTime
182 {
183     //1.計算進度值
184     double progress=self.player.currentTime/self.player.duration;
185     
186     //2.計算滑塊的x值
187     // 滑塊的最大的x值
188     CGFloat sliderMaxX=self.view.width-self.slider.width;
189     self.slider.x=sliderMaxX*progress;
190     //設置滑塊上的當前播放時間
191     [self.slider setTitle:[self strWithTime:self.player.currentTime] forState:UIControlStateNormal];
192     
193     //3.設置進度條的寬度
194     self.progressView.width=self.slider.center.x;
195     
196 }
197 
198 #pragma mark-內部的按鈕監聽方法
199 //返回按鈕
200 - (IBAction)exit {
201     
202     //0.移除定時器
203     [self  removeCurrentTime];
204     //1.禁用整個app的點擊事件
205     UIWindow *window=[UIApplication sharedApplication].keyWindow;
206     window.userInteractionEnabled=NO;
207     
208     //2.動畫隱藏View
209     [UIView animateWithDuration:0.25 animations:^{
210         self.view.y=window.height;
211     } completion:^(BOOL finished) {
212         window.userInteractionEnabled=YES;
213         //設置view隱藏能夠節省一些性能
214         self.view.hidden=YES;
215     }];
216 }
217 
218 /**
219  *點擊了進度條
220  */
221 - (IBAction)tapProgressBg:(UITapGestureRecognizer *)sender {
222     //獲取當前單擊的點
223     CGPoint point=[sender locationInView:sender.view];
224     //切換歌曲的當前播放時間
225     self.player.currentTime=(point.x/sender.view.width)*self.player.duration;
226     //更新播放進度
227     [self updateCurrentTime];
228 }
229 /**
230  *拖動滑塊
231  */
232 - (IBAction)panSlider:(UIPanGestureRecognizer *)sender {
233     
234     //1.獲得挪動的距離
235     CGPoint t=[sender translationInView:sender.view];
236     //把挪動清零
237     [sender setTranslation:CGPointZero inView:sender.view];
238     
239     //2.控制滑塊和進度條的frame
240     CGFloat sliderMaxX=self.view.width-self.slider.width;
241     self.slider.x+=t.x;
242     //控制滑塊的frame，不讓其越界
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     //設置進度條的寬度
251     self.progressView.width=self.slider.center.x;
252     
253     //3.設置時間值
254     double progress=self.slider.x/sliderMaxX;
255     //當前的時間值=音樂的時長*當前的進度值
256     NSTimeInterval time=self.player.duration*progress;
257     [self.slider setTitle:[self strWithTime:time] forState:UIControlStateNormal];
258     
259     //設置拖拽進度的X的值
260     self.currentTimeView.x=self.slider.x;
261     [self.currentTimeView setTitle:self.slider.currentTitle forState:UIControlStateNormal];
262     
263     //4.如果開始拖動，那麼就停止定時器
264     if (sender.state==UIGestureRecognizerStateBegan) {
265         //停止定時器
266         [self removeCurrentTime];
267         
268         //設置拖拽進度
269         //顯示
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         //隱藏
276         self.currentTimeView.hidden=YES;
277         //設置播放器播放的時間
278         self.player.currentTime=time;
279 #warning 如果正在播放，才需要添加定時器
280 //        if (self.player.isPlaying) {
281         //開啓定時器
282         [self addCurrentTimeTimer];
283 //        }
284     }
285 }
286 
287 //上一首
288 - (IBAction)previous {
289     //1.在開始播放之前，禁用一切的app點擊事件
290     UIWindow *window=[[UIApplication sharedApplication].windows lastObject];
291     window.userInteractionEnabled=NO;
292     
293     //2.重置當前歌曲
294     [self resetPlayingMusic];
295     
296     //3.獲得上一首歌曲
297     [YYMusicTool setPlayingMusic:[YYMusicTool previousMusic]];
298     
299     //4.播放上一首歌曲
300     [self starPlayingMusic];
301     
302     //5.回覆window的點擊爲可用
303     window.userInteractionEnabled=YES;
304 }
305 //下一首
306 - (IBAction)next {
307     //1.在開始播放之前，禁用一切的app點擊事件
308     UIWindow *window=[[UIApplication sharedApplication].windows lastObject];
309     window.userInteractionEnabled=NO;
310     
311     //2.重置當前歌曲
312     [self resetPlayingMusic];
313     
314     //3.獲得下一首歌曲
315     [YYMusicTool setPlayingMusic:[YYMusicTool nextMusic]];
316     
317     //4.播放下一首歌曲
318     [self starPlayingMusic];
319     
320     //5.回覆window的點擊爲可用
321     window.userInteractionEnabled=YES;
322 }
323 //繼續或暫停播放
324 - (IBAction)playOrPause {
325     if (self.playOrPauseButton.isSelected) {//暫停
326         self.playOrPauseButton.selected=NO;
327         //暫停播放
328         [YYAudioTool pauseMusic:self.playingMusic.filename];
329         //停掉定時器
330         [self removeCurrentTime];
331     }else
332     {
333         self.playOrPauseButton.selected=YES;
334         //繼續播放
335         [YYAudioTool playMusic:self.playingMusic.filename];
336         //開啓定時器
337         [self addCurrentTimeTimer];
338     }
339 }
340 
341 
342 @end