win8 摄像
StorageFile file = null; public MainPage() { this.InitializeComponent(); } /// <summary> /// 在此页将要在 Frame 中显示时进行调用。 /// </summary> /// <param name="e">描述如何访问此页的事件数据。Parameter /// 属性通常用于配置页。</param> protected override void OnNavigatedTo(NavigationEventArgs e) { } //拍照 private async void Button_Click_1(object sender, RoutedEventArgs e) { /*CameraCaptureUI类负责启动摄像头,并捕获照摄像头拍摄的照片 要想启动摄像头,需打开Package.appxmanifest文件,切换到“功能”界面, 勾选网络摄像机和麦克风*/ CameraCaptureUI dialog = new CameraCaptureUI(); Size aspectRatio = new Size(16, 9); /*设定摄像头拍摄照片的高宽比,拍照完成之后就能看到效果,可以通过修改高宽比 来查看不同的效果*/ dialog.PhotoSettings.CroppedAspectRatio = aspectRatio; /*CaptureFileAsync方法负责启动摄像有并拍摄照片或拍摄影片,其返回值为拍摄的照片或拍摄的影片. CameraCaptureUIMode是个枚举,设置拍摄的是照片还是影片*/ file = await dialog.CaptureFileAsync(CameraCaptureUIMode.Photo); if (file != null) { /*BitmapImage类是ImageSource类的子类,用来将图片填充到Image控件中*/ BitmapImage bitmapImage = new BitmapImage(); /*使用OpenAsync打开拍摄的照片,返回流filestream*/ using (IRandomAccessStream fileStream = await file.OpenAsync(FileAccessMode.Read)) { //设置bitmapImage的图片源为拍摄的照片 bitmapImage.SetSource(fileStream); } //将照片显示到图片控件中 CapturedPhoto.Source = bitmapImage; } } //保存图片,为了显得正式些,使用了AppBar private async void btnSave_Click_1(object sender, RoutedEventArgs e) { //实例化文件选取器 FileSavePicker picker = new FileSavePicker(); //设置图片保存的类型 picker.FileTypeChoices.Add("image file", new List<string>() { ".jpg",".png" }); /*返回文件选取器返回的新建的文件:调用PickSaveFileAsync方法后会在制定的位置 创建制定名称制定格式的文件*/ StorageFile storageFile = await picker.PickSaveFileAsync(); //打开通过摄像头拍摄的照片,并返回流,以流的形式读取文件 var StreamRandom = await file.OpenAsync(FileAccessMode.Read); //将拍摄的照片以流的方式读取到缓冲区 IBuffer buffer = RandomAccessStreamToBuffer(StreamRandom); //将缓冲区的内容(拍摄的照片)写入到新建的文件中 await FileIO.WriteBufferAsync(storageFile, buffer); } //将图片写入到缓冲区 private IBuffer RandomAccessStreamToBuffer(IRandomAccessStream randomstream) { Stream stream = WindowsRuntimeStreamExtensions.AsStreamForRead(randomstream.GetInputStreamAt(0)); MemoryStream memoryStream = new MemoryStream(); if (stream != null) { byte[] bytes = ConvertStreamTobyte(stream); if (bytes != null) { var binaryWriter = new BinaryWriter(memoryStream); binaryWriter.Write(bytes); } } IBuffer buffer = WindowsRuntimeBufferExtensions.GetWindowsRuntimeBuffer(memoryStream, 0, (int)memoryStream.Length); return buffer; } //将流转换成二进制 public static byte[] ConvertStreamTobyte(Stream input) { byte[] buffer = new byte[16 * 1024]; using (MemoryStream ms = new MemoryStream()) { int read; while ((read = input.Read(buffer, 0, buffer.Length)) > 0) { ms.Write(buffer, 0, read); } return ms.ToArray(); } }
简洁版
/*CameraCaptureUI类负责启动摄像头,并捕获照摄像头拍摄的照片 要想启动摄像头,需打开Package.appxmanifest文件,切换到“功能”界面, 勾选网络摄像机和麦克风*/ CameraCaptureUI dialog = new CameraCaptureUI(); //Size aspectRatio = new Size(16, 9); /*设定摄像头拍摄照片的高宽比,拍照完成之后就能看到效果,可以通过修改高宽比 来查看不同的效果*/ //dialog.PhotoSettings.CroppedAspectRatio = aspectRatio; /*CaptureFileAsync方法负责启动摄像有并拍摄照片或拍摄影片,其返回值为拍摄的照片或拍摄的影片. CameraCaptureUIMode是个枚举,设置拍摄的是照片还是影片*/ StorageFile file = await dialog.CaptureFileAsync(CameraCaptureUIMode.PhotoOrVideo); if (file != null) { FolderPicker openPic = new FolderPicker(); openPic.FileTypeFilter.Add("*"); StorageFolder store = await openPic.PickSingleFolderAsync(); await file.MoveAsync(store); }