import
UIKit
import
MediaPlayer
class
ViewController
:
UIViewController
{
//申明一个媒体播放控件
var
audioPlayer:
MPMoviePlayerController
=
MPMoviePlayerController
();
//申明一个计时器
var
timer:
NSTimer
?
//ProgressView控件 播放进度条
@IBOutlet
weak
var
progressView:
UIProgressView
!
//Label控件 播放时间
@IBOutlet
weak
var
playTime:
UILabel
!
override
func
viewDidLoad() {
super
.viewDidLoad()
onSetAudio(
"
http://hangge.com/file/music.mp3"
)
}
override
func
didReceiveMemoryWarning() {
super
.didReceiveMemoryWarning()
}
//播放歌曲
func
onSetAudio(url:
String
){
//暂停当前歌曲的播放
self
.audioPlayer.stop()
//获取歌曲文件
self
.audioPlayer.contentURL=
NSURL
(string:url)
//播放歌曲
self
.audioPlayer.play()
//先停掉计时器
timer?.invalidate()
//将计时器归零
playTime!.text=
"00:00"
//开启计时器
timer=
NSTimer
.scheduledTimerWithTimeInterval(0.4,target:
self
,
selector:
"onUpdate"
,userInfo:
nil
,repeats:
true
)
}
//计时器更新方法
func
onUpdate(){
//返回播放器当前的播放时间
let
c=audioPlayer.currentPlaybackTime
if
c>0.0 {
//歌曲的总时间
let
t=audioPlayer.duration
//歌曲播放的百分比
let
p:
CFloat
=
CFloat
(c/t)
//通过百分比设置进度条
progressView!.setProgress(p,animated:
true
)
//一个小算法，来实现00：00这种格式的播放时间
let
all:
Int
=
Int
(c)
let
m:
Int
=all % 60
let
f:
Int
=
Int
(all/60)
var
time:
String
=
""
if
f<10{
time=
"0(f):"
}
else
{
time=
"(f)"
}
if
m<10{
time+=
"0(m)"
}
else
{
time+=
"(m)"
}
//更新播放时间
playTime!.text=time
}
}
}
