Swift实战-QQ在线音乐(第一版)

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//一、*项目准备

1、QQ音乐App 界面素材：(我使用PP助手，将QQ音乐App备份，解压ipa文件即可得到里面的图片素材)

2、豆瓣电台接口:"http://douban.fm/j/mine/playlist?channel=1"

//二、*界面布局
使用Xcode新建一个Single View Application项目，选择Swift语言。

导入素材图片、在默认的ViewController视图进行以下布局。

界面控件不多，如图将几个关键控件布局就可以了。

//三、*背景模糊特效
布局好就马上要写代码了，写完将会看到一个非常漂亮的效果

首先将控件关联到ViewController

1   @IBOutlet weak var photoBorderView: UIView!
2     @IBOutlet weak var progressSlider: UISlider!
3     @IBOutlet weak var backgroundImageView: UIImageView!
4     @IBOutlet weak var photo: UIImageView!
5     @IBOutlet weak var playButton:UIButton!
6     @IBOutlet weak var titleLabel: UILabel!
7     @IBOutlet weak var artistLabel:UILabel!
8     @IBOutlet weak var playTimeLabel:UILabel!
9     @IBOutlet weak var allTimeLabel:UILabel!

在viewDidLoad方法里，写上模糊特效

 override func viewDidLoad() {
        super.viewDidLoad()
        //将图像变圆形
        photo.layer.cornerRadius=self.photo.frame.size.width/2.0
        photo.clipsToBounds=true
        photoBorderView.layer.cornerRadius=self.photoBorderView.frame.size.width/2.0
        photoBorderView.clipsToBounds=true
        //模糊效果
        let blurEffect=UIBlurEffect(style: UIBlurEffectStyle.Dark)
        let blureView=UIVisualEffectView(effect: blurEffect)
        blureView.frame=self.view.frame
        backgroundImageView.addSubview(blureView)
        //设置slider图标
        progressSlider.setMinimumTrackImage(UIImage(named: "player_slider_playback_left.png"), forState: UIControlState.Normal)
        progressSlider.setMaximumTrackImage(UIImage(named: "player_slider_playback_right.png"), forState: UIControlState.Normal)
        progressSlider.setThumbImage(UIImage(named: "player_slider_playback_thumb.png"), forState: UIControlState.Normal)
}

运行一下，看看是不是很漂亮。

//四*让图片旋转起来

先把下面这个方法写上，想看到效果就在viewDidLoad（）方法里加上 rotationAnimation()进行调用。

 //图片旋转动画
    func rotationAnimation(){
        let rotation=CABasicAnimation(keyPath: "transform.rotation.z")
        rotation.timingFunction=CAMediaTimingFunction(name: kCAMediaTimingFunctionLinear)
        rotation.toValue=2*M_PI
        rotation.duration=16
        rotation.repeatCount=HUGE
        rotation.autoreverses=false
        photo.layer.addAnimation(rotation, forKey: "rotationAnimation")
    }

//五*弹出播放列表页

新建一个PlayListView.swift和PlayListView.xib并将xib的class关联到PlayListView

将PlayListView.xib进行布局

//弹出方法

 //显示
    func showPlayListView(){
        UIApplication.sharedApplication().keyWindow?.addSubview(self)
        //动画从下向上进入
        var vbFrame:CGRect = self.viewBackground.frame
        vbFrame.origin.y=vbFrame.origin.y+vbFrame.size.height
        self.viewBackground.frame=vbFrame
        UIView.animateWithDuration(0.15, animations: { () -> Void in
            var vbFrame:CGRect = self.viewBackground.frame
            vbFrame.origin.y=vbFrame.origin.y-vbFrame.size.height
            self.viewBackground.frame=vbFrame
        });
    }

//关闭方法（将关闭按钮，和viewTouch的点击事件，关联此方法）

 //关闭
    @IBAction func closePlayListView(sender: AnyObject) {
        self.removeFromSuperview()
    }

//弹出我关闭方法都写好了，下面就在ViewController页，调用此视图让其弹出来

 @IBAction func showPlayList(sender: UIButton) {
        NSLog("----click---")
        var playList:PlayListView=NSBundle.mainBundle().loadNibNamed("PlayListView", owner: self, options: nil).last as PlayListView
        playList.showPlayListView()
    }

//六、请求网络数据

请求使用到一个封装类：HttpProtocol.swift

import UIKit

protocol HttpProtocol{
    func didRecieveResults(results:NSDictionary)
}

class HttpController:NSObject{
    
    var delegate:HttpProtocol?
    
    func onSearch(url:String){
        NSLog("请求地址:%@", url)
        var nsUrl:NSURL=NSURL(string:url)!
        var request:NSURLRequest=NSURLRequest(URL:nsUrl)
        NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue.mainQueue(), completionHandler: {(response:NSURLResponse!,data:NSData!,error:NSError!)->Void in
            if (data != nil){
                var jsonResult:NSDictionary=NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers, error: nil) as NSDictionary
                self.delegate?.didRecieveResults(jsonResult)
            }
        })
    }
}

新建一个实体类Song.swift用来存放请求的数据

import Foundation
class Song: NSObject {
    var adtype:NSNumber = 0.0
    var aid:NSString = ""
    var album:NSString = ""
    var albumtitle:NSString = ""
    var artist:NSString = ""
    var company:NSString = ""
    var kbps:NSNumber = 0.0
    var length:NSNumber = 0.0
    var like:NSNumber = 0.0
    var monitor_url:NSString = ""
    var picture:NSString = ""
    var public_time:NSString = ""
    var rating_avg:NSString = ""
    var sha256:NSString = ""
    var sid:NSString = ""
    var songlists_count:NSNumber = 0.0
    var ssid:NSString = ""
    var subtype:NSString = ""
    var title:NSString = ""
    var url:NSString = ""
}

将请求的数据转化了实体集合

  var eHttp:HttpController = HttpController()

 //请求网络数据
        eHttp.delegate=self
        eHttp.onSearch("http://douban.fm/j/mine/playlist?channel=1")//华语

  //请求网络数据结果
    func didRecieveResults(results:NSDictionary){
        NSLog("请求到的数据:%@", results)
        if (results["song"] != nil) {
            let resultData:NSArray = results["song"] as NSArray
            let list:NSMutableArray = NSMutableArray()
            
            for(var index:Int=0;index<resultData.count;index++){
                var dic:NSDictionary = resultData[index] as NSDictionary
                var song:Song=Song()
                song.setValuesForKeysWithDictionary(dic as NSDictionary)
                list.addObject(song)
            }
            self.tableData=list
            self.setCurrentSong(list[0] as Song)
        }
    }

//七、*将请求后的第1条数据设置为当前将要播发的歌曲

绑定当前歌曲信息

  //设置当前播放的音乐
    func setCurrentSong(curSong:Song){
        currentSong=curSong
        photo.image=getImageWithUrl(currentSong.picture)
        backgroundImageView.image=photo.image
        titleLabel.text=currentSong.title
        artistLabel.text=currentSong.artist
        playButton.selected=false
        playTimeLabel.text="00:00"
        self.progressSlider.value=0.0
        self.rotationAnimation()
    }

//八、*播放音乐

  self.audioPlayer.stop()
        self.audioPlayer.contentURL=NSURL(string:currentSong.url)
        timer?.invalidate()
        timer=NSTimer.scheduledTimerWithTimeInterval(0.4, target: self, selector: "updateTime", userInfo: nil, repeats: true)

 @IBAction func playButtonClick(sender: UIButton) {
        if sender.selected {
            //暂停播放
            self.audioPlayer.pause()
            pauseLayer(photo.layer)
        }else{
            //开始/继续播放
            self.audioPlayer.play()
            resumeLayer(photo.layer)
        }
        sender.selected = !sender.selected
    }
    
    //更新播放时间
    func updateTime(){
        let c=audioPlayer.currentPlaybackTime
         // audioPlayer.endPlaybackTime
        if c>0.0 {
            let t=audioPlayer.duration
            let p:CFloat=CFloat(c/t)
            progressSlider.value=p;
            let all:Int=Int(c)//共多少秒
            let m:Int=all % 60//秒
            let f:Int=Int(all/60)//分
            var time=NSString(format:"%02d:%02d",f,m)
            playTimeLabel.text=time
        }
    }

//九、*当点击播放或暂停时，需要将图片的动画动起来或停止动画

使用到以下两个方法

//停止Layer上面的动画
    func pauseLayer(layer:CALayer){
        var pausedTime:CFTimeInterval=layer.convertTime(CACurrentMediaTime(), fromLayer: nil)
        layer.speed=0.0
        layer.timeOffset=pausedTime
    }
    
    //继续Layer上面的动画
    func resumeLayer(layer:CALayer){
        var pausedTime:CFTimeInterval = layer.timeOffset
        layer.speed=1.0
        layer.timeOffset=0.0
        layer.beginTime=0.0
        var timeSincePause:CFTimeInterval=layer.convertTime(CACurrentMediaTime(), fromLayer: nil)-pausedTime
        layer.beginTime=timeSincePause
    }