MediaPlayer_视频录制和播放

//
//  ViewController.swift
//  LessonMediaPlayerWithSwift
//
//  Created by 挤眼的家雀 on 15/4/9.
//  Copyright (c) 2015年 徐栋. All rights reserved.
//

import UIKit
import MediaPlayer
import MobileCoreServices


class ViewController: UIViewController,ChooseFileDelegate,UIImagePickerControllerDelegate,UINavigationControllerDelegate{
    
    required init(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)!
        
        NSNotificationCenter.defaultCenter().addObserver(self, selector:"moviePlayerNotificationMethod:", name: MPMoviePlayerDidEnterFullscreenNotification, object: nil)
        NSNotificationCenter.defaultCenter().addObserver(self, selector: "moviePlayerNotificationMethod:", name: MPMoviePlayerDidExitFullscreenNotification, object: nil)
    }
       var moviewPlayer:MPMoviePlayerController!
     var moviewPlayerViewController:MPMoviePlayerViewController!
    var volumeSlider:UISlider!
    func moviePlayerNotificationMethod(info:NSNotification)
    {
        print("\(info)")
        switch info.name
        {
         case "MPMoviePlayerDidEnterFullscreenNotification":
            moviewPlayer.play()
         case "MPMoviePlayerDidExitFullscreenNotification":
            moviewPlayer.pause()
         default :
            moviewPlayer.stop()
        }
    }
    @IBAction func movieButton(sender: AnyObject)
    {
        switch sender.tag
        {
        case 101:
            self.presentMoviePlayerViewControllerAnimated(moviewPlayerViewController)
        case 102:
            moviewPlayer.play()
        case 103:
            moviewPlayer.pause()
        case 104:
            moviewPlayer.stop()
        default:
            return
        }
    }
    

    

    @IBAction func takeCamera(sender: AnyObject)
    {
        //a.检查相机是否可用  在用这些来源的时候最好检测以下设备是否支持；
        if !UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera)
        {
            print("没有相机")
            return
        }
        else
        {
            self.imagePickerControllerStatus(UIImagePickerControllerSourceType.Camera)
        }
        
    }
//    b.获取图片和视频
    //    UIImagePickerController 是系统提供的用来获取图片和视频的接口；
    //
    //    用UIImagePickerController 类来获取图片视频，大体分为以下几个步骤：
    //
    //    1. 初始化UIImagePickerController 类；
    //
    //    2. 设置UIImagePickerController 实例的数据来源类型（下面解释）；
    //
    //    3. 设置设置代理；
    //
    //    4. 如果需要做图片修改的话设置allowsEditing =yes。
    
    func imagePickerControllerStatus(imageState:UIImagePickerControllerSourceType)
    {
        var videoPicker = UIImagePickerController()
        videoPicker.delegate = self
        videoPicker.sourceType = imageState
        videoPicker.mediaTypes = [kUTTypeMovie as String]//UMediaType包含KUTTypeImage,KUTTypeMovie
        if imageState == UIImagePickerControllerSourceType.Camera//判断是否获取图片来源方式是否相机？！
        {
            self.videoRecorderController(videoPicker)//上面设置来源方式为相机，则调用视频录制方法。
        }
        videoPicker.allowsEditing = true
        //上面只是实例了UIImagePickerController及其属性 在需要获取图片的时候需要弹出窗口调用
        self.presentViewController(videoPicker, animated: true) { () -> Void in
            
        }
    }
    
    func videoRecorderController(imagePick:UIImagePickerController)
    {
        imagePick.videoMaximumDuration = 30
        imagePick.videoQuality = UIImagePickerControllerQualityType.TypeMedium
    }

//    UIImagePickerControllerMediaType 包含着KUTTypeImage 和KUTTypeMovie
//    KUTTypeImage 包含：
//    
//    const CFStringRef  kUTTypeImage ;抽象的图片类型
//    const CFStringRef  kUTTypeJPEG ;
//    const CFStringRef  kUTTypeJPEG2000 ;
//    const CFStringRef  kUTTypeTIFF ;
//    const CFStringRef  kUTTypePICT ;
//    const CFStringRef  kUTTypeGIF ;
//    const CFStringRef  kUTTypePNG ;
//    const CFStringRef  kUTTypeQuickTimeImage ;
//    const CFStringRef  kUTTypeAppleICNS
//    const CFStringRef kUTTypeBMP;
//    const CFStringRef  kUTTypeICO;
//    
//    KUTTypeMovie 包含：
//    
//    const CFStringRef  kUTTypeAudiovisualContent ;抽象的声音视频
//    const CFStringRef  kUTTypeMovie ;抽象的媒体格式（声音和视频）
//    const CFStringRef  kUTTypeVideo ;只有视频没有声音
//    const CFStringRef  kUTTypeAudio ;只有声音没有视频
//    const CFStringRef  kUTTypeQuickTimeMovie ;
//    const CFStringRef  kUTTypeMPEG ;
//    const CFStringRef  kUTTypeMPEG4 ;
//    const CFStringRef  kUTTypeMP3 ;
//    const CFStringRef  kUTTypeMPEG4Audio ;
//    const CFStringRef  kUTTypeAppleProtectedMPEG4Audio;
//

    
    //我们还需要代理来获取我们选中的图片
    //- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker;当用户取消选取时调用；
    //- (void)imagePickerController:(UIImagePickerController *)picker
    // didFinishPickingMediaWithInfo:(NSDictionary *)info;
    //当用户选取完成后调用；
    func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]){
//    }
//    func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject])
//    {
        let paths:NSArray = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true)
        let documentsPath:String = paths[0] as! String
        var filePath = documentsPath.stringByAppendingString("/video.mov")
        
        let infoDic:NSDictionary = info as NSDictionary
        let stateStr:NSString = infoDic.objectForKey(UIImagePickerControllerMediaType) as! NSString
        if stateStr.isEqualToString(kUTTypeMovie as String)//判断是否视频文件！
        {
            var movieUrl:NSURL!
            let mediaUrl:NSURL = (infoDic.objectForKey(UIImagePickerControllerMediaURL) as? NSURL)!
            let mediaUrlStr = mediaUrl.absoluteString
            movieUrl = infoDic.objectForKey(UIImagePickerControllerMediaURL) as? NSURL
            let movieData = NSData(contentsOfURL: movieUrl)
            var error:NSError?
            if NSFileManager.defaultManager().fileExistsAtPath(filePath)
            {
                var dateFormat:NSDateFormatter = NSDateFormatter()
                dateFormat.dateFormat = "yyyy-MM-dd-HH-mm"
                var dateStr = dateFormat.stringFromDate(NSDate())
                var fileName = "/video-\(dateStr).mov"
                filePath = documentsPath.stringByAppendingString(fileName)
            }
//            选取的信息都在info中，info 是一个字典。
//            字典中的键：
//            NSString *const  UIImagePickerControllerMediaType ;指定用户选择的媒体类型（文章最后进行扩展）
//            NSString *const  UIImagePickerControllerOriginalImage ;原始图片
//            NSString *const  UIImagePickerControllerEditedImage ;修改后的图片
//            NSString *const  UIImagePickerControllerCropRect ;裁剪尺寸
//            NSString *const  UIImagePickerControllerMediaURL ;媒体的URL
//            NSString *const  UIImagePickerControllerReferenceURL ;原件的URL
//            NSString *const  UIImagePickerControllerMediaMetadata;当来数据来源是照相机的时候这个值才有效
//
           
//           因为第一次运行，该路径并不存在，所以，写入方法需写在判断文件是否存在的外面
            do {
                try movieData?.writeToFile(filePath, options: NSDataWritingOptions.DataWritingAtomic)
                self.moviewPlayer.contentURL = NSURL.fileURLWithPath(filePath)
                
            }catch{
                let alter:UIAlertController = UIAlertController(title: "Warning", message: "当前movie发生错误", preferredStyle: UIAlertControllerStyle.Alert)
            }
//             movieData?.writeToFile("\(filePath)", options: NSDataWritingOptions.DataWritingAtomic, error: &error)
//            if error != nil
//            {
//                let alter:UIAlertController = UIAlertController(title: "警告", message: "当前movie发生错误", preferredStyle: UIAlertControllerStyle.Alert)
//                
//            }
//            else
//            {
//                self.moviewPlayer.contentURL = NSURL.fileURLWithPath(filePath)
//                self.moviewPlayer.play()
//            }
            
            self.dismissViewControllerAnimated(true, completion: { () -> Void in
               
            })
            
        }
        
    }
    @IBAction func chooseVideoforLibrary(sender: AnyObject)
    {
        self.imagePickerControllerStatus(UIImagePickerControllerSourceType.PhotoLibrary)
    }