public string DecriptFile(string filename, string name)
{
Java.IO.File extStore = Android.OS.Environment.GetExternalStoragePublicDirectory("Temp");
Android.Util.Log.Error("Decryption Started", extStore + "");
FileInputStream fis = new FileInputStream(extStore + "/" + filename);
// createFile(filename, extStore);
FileOutputStream fos = new FileOutputStream(extStore + "/" + "decrypted" + filename, false);
System.IO.FileStream fs = System.IO.File.OpenWrite(extStore + "/" + name);
Cipher cipher = Cipher.GetInstance("AES/CBC/PKCS5Padding");
byte[] raw = System.Text.Encoding.Default.GetBytes(sKey);
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
IvParameterSpec iv = new IvParameterSpec(System.Text.Encoding.Default.GetBytes(ivParameter));//
cipher.Init(CipherMode.DecryptMode, skeySpec, iv);
CipherOutputStream cos = new CipherOutputStream(fs, cipher);
int b;
byte[] d = new byte[1024 * 1024];
while ((b = fis.Read(d)) != -1)
{
cos.Write(d, 0, b);
}
System.IO.File.Delete(extStore + "/" + "decrypted" + filename);
Android.Util.Log.Error("Decryption Ended", extStore + "/" + "decrypted" + name);
return(extStore.ToString());
//return d;
}
public string GetDirectory()
{
//string documentsPath = System.Environment.GetFolderPath(System.Environment.SpecialFolder.MyDocuments); // Documents folder
File picturesDirectory = Environment.GetExternalStoragePublicDirectory(Environment.DirectoryPictures);
return(picturesDirectory.ToString());
}
/// <summary>
/// decode这个图片并且按比例缩放以减少内存消耗，虚拟机对每张图片的缓存大小也是有限制的
/// </summary>
/// <returns>The file.</returns>
/// <param name="f">F.</param>
private Bitmap DecodeFile(Java.IO.File f)
{
try {
//decode image size
BitmapFactory.Options o = new BitmapFactory.Options();
o.InJustDecodeBounds = true;
//FileInputStream stream1=new FileInputStream(f);
FileStream stream1 = new FileStream(f.ToString(), FileMode.OpenOrCreate);
BitmapFactory.DecodeStream(stream1, null, o);
stream1.Close();
//Find the correct scale value. It should be the power of 2.
int REQUIRED_SIZE = 60;
int width_tmp = o.OutWidth, height_tmp = o.OutHeight;
int scale = 1;
while (true)
{
if (width_tmp / 2 < REQUIRED_SIZE || height_tmp / 2 < REQUIRED_SIZE)
{
break;
}
width_tmp /= 2;
height_tmp /= 2;
scale *= 2;
}
//decode with inSampleSize
BitmapFactory.Options o2 = new BitmapFactory.Options();
o2.InSampleSize = scale;
//FileInputStream stream2=new FileInputStream(f);
FileStream stream2 = new FileStream(f.ToString(), FileMode.OpenOrCreate);
Bitmap bitmap = BitmapFactory.DecodeStream(stream2, null, o2);
stream2.Close();
return(bitmap);
} catch (Java.IO.FileNotFoundException e) {
e.PrintStackTrace();
}
catch (Java.IO.IOException e) {
e.PrintStackTrace();
}
return(null);
}
public string SafeHTMLToPDF(string html, string filename, int flag)
{
int width = 0;
int height = 0;
Android.Webkit.WebView webpage = null;
var dir = new Java.IO.File(Android.OS.Environment.ExternalStorageDirectory.AbsolutePath + "/KegIdFiles/");
var file = new Java.IO.File(dir + "/" + filename + ".pdf");
if (!dir.Exists())
{
dir.Mkdirs();
}
int x = 0;
while (file.Exists())
{
x++;
file = new Java.IO.File(dir + "/" + filename + "( " + x + " )" + ".pdf");
}
if (webpage == null)
{
webpage = new Android.Webkit.WebView(CrossCurrentActivity.Current.AppContext);
}
if (flag == 0)
{
width = 2959;
height = 3873;
}
else
{
width = 3659;
height = 4573;
}
webpage.Layout(0, 0, width, height);
webpage.LoadDataWithBaseURL("", html, "text/html", "UTF-8", null);
webpage.SetWebViewClient(new WebViewCallBack(file.ToString(), flag));
return(file.ToString());
}
public override void OnActivityResult(int requestCode, int resultCode, Intent data)
{
if (resultCode == (int)Result.Canceled)
{
return;
}
if (requestCode == None)
{
return;
}
if (requestCode == PhotoTake)
{
if (resultCode != (int)Result.Ok)
{
return;
}
//拍照
Java.IO.File picture = new Java.IO.File(Android.OS.Environment.ExternalStorageDirectory.ToString() + "/" + Android.OS.Environment.DirectoryDcim.ToString() + "/head.jpg");
if (System.IO.File.Exists(picture.ToString()))
{
CropPhoto(Android.Net.Uri.FromFile(picture));
}
}
if (data == null)
{
return;
}
if (requestCode == PhotoPick) //选取照片
{
if (resultCode != (int)Result.Ok)
{
return;
}
CropPhoto(data.Data);
}
//处理结果
if (requestCode == PhotoResult)
{
Bundle extras = data.Extras;
if (extras != null)
{
Bitmap photo = (Bitmap)extras.GetParcelable("data");
img_head.SetImageBitmap(photo);
//将图像保存至本地和服务器上
SetPicToLocalAndServer(photo); //保存在SD卡中
}
}
base.OnActivityResult(requestCode, resultCode, data);
}
public void Create(byte[] imageData)
{
var webClient = new WebClient();
//byte[] imageData = webClient.DownloadData("https://kasikornbank.com/SiteCollectionDocuments/about/img/logo/logo.png");
var resizeFactor = 0.5f;
var bitmap = SKBitmap.Decode(imageData);
var toBitmap = new SKBitmap((int)Math.Round(bitmap.Width * resizeFactor), (int)Math.Round(bitmap.Height * resizeFactor), bitmap.ColorType, bitmap.AlphaType);
var canvas = new SKCanvas(toBitmap);
canvas.SetMatrix(SKMatrix.MakeScale(resizeFactor, resizeFactor));
canvas.DrawBitmap(bitmap, 0, 0);
canvas.ResetMatrix();
var font = SKTypeface.FromFamilyName("Arial");
var brush = new SKPaint
{
Typeface = font,
TextSize = 64.0f,
IsAntialias = true,
Color = new SKColor(255, 255, 255, 255)
};
canvas.DrawText("Resized!", 0, bitmap.Height * resizeFactor / 2.0f, brush);
canvas.Flush();
var image = SKImage.FromBitmap(toBitmap);
var data = image.Encode(SKEncodedImageFormat.Png, 90);
DateTime now = DateTime.Now;
string fileName = "Test";
//string fileName = ("{0}_{1}_{2}-{4}{5}{6}", now.Date,now.Month,now.Year,now.Hour,now.Minute,now.Second).ToString();
string extension = ".png";
Java.IO.File picturesDirectory = Android.OS.Environment.GetExternalStoragePublicDirectory(Android.OS.Environment.DirectoryPictures);
Java.IO.File folderDirectory = picturesDirectory;
//Start Save
using (var stream = new FileStream(Path.Combine(folderDirectory.ToString(), fileName + extension), FileMode.Create, FileAccess.Write))
data.SaveTo(stream);
//End Save
data.Dispose();
image.Dispose();
canvas.Dispose();
brush.Dispose();
font.Dispose();
toBitmap.Dispose();
bitmap.Dispose();
}
private void Save(string windowname)
{
if (windowname != "")
{
try
{
Java.IO.File path = new Java.IO.File(App._dir, windowname);
if (!path.Exists())
{
path.Mkdirs();
}
else
{
MessageBox.Confirm(this, "警告", "该文件夹已存在，是否覆盖？", delegate
{
path.Mkdirs();
}, delegate { });
}
SavePics(path.ToString());
SaveResult.SaveGeologicalData(path.ToString());
SaveResult.SaveGeometricalData(path.ToString());
SaveResult.SaveStatisticalResult(path.ToString());
MessageBox.Show(this, "成功", "保存成功");
}
catch
{
MessageBox.Show(this, "失败", "保存失败");
}
}
else
{
MessageBox.Show(this, "注意", "测窗名称不能为空！");
}
}
public string GetScanPath()
{
File ExtCameraDirectory = new File(Environment.GetExternalStoragePublicDirectory(Environment.DirectoryDcim), "Camera");
File Ext100ANDRODirectory = new File(Environment.GetExternalStoragePublicDirectory(Environment.DirectoryDcim), "100ANDRO");
if (Ext100ANDRODirectory.ListFiles().Length == 0)
{
return(ExtCameraDirectory.ToString());
}
else
{
return(Ext100ANDRODirectory.ToString());
}
}
public static string getSDPath()
{
Java.IO.File sdDir = null;
bool sdCardExist = Android.OS.Environment.ExternalStorageState.Equals(Android.OS.Environment.MediaMounted); // 判断sd卡是否存在
if (sdCardExist)
{
sdDir = Android.OS.Environment.ExternalStorageDirectory; // 获取跟目录
}
if (sdDir != null)
{
return(sdDir.ToString());
}
return(null);
}
public static void addImageToGallery(File filePath, Context context, Camera2BasicFragment owner)
{
try
{
var fileName = System.IO.Path.GetFileName(filePath.Path);
var publicUri = MainActivity.GetOutputMediaFile(context, null, null);
if (publicUri == null)
{
owner.ShowToast("File could not be saved. Please grant permission to write to external storage.");
return;
}
using (System.IO.Stream input = System.IO.File.OpenRead(filePath.Path))
using (System.IO.Stream output = System.IO.File.Create(publicUri.Path))
input.CopyTo(output);
var f = new Java.IO.File(publicUri.Path);
Android.Media.MediaScannerConnection.ScanFile(context, new[] { f.AbsolutePath }, null, context as MainActivity);
ContentValues values = new ContentValues();
values.Put(MediaStore.Images.Media.InterfaceConsts.Title, System.IO.Path.GetFileNameWithoutExtension(f.AbsolutePath));
values.Put(MediaStore.Images.Media.InterfaceConsts.Description, string.Empty);
values.Put(MediaStore.Images.Media.InterfaceConsts.DateTaken, Java.Lang.JavaSystem.CurrentTimeMillis());
values.Put(MediaStore.Images.ImageColumns.BucketId, f.ToString().ToLowerInvariant().GetHashCode());
values.Put(MediaStore.Images.ImageColumns.BucketDisplayName, f.Name.ToLowerInvariant());
values.Put("_data", f.AbsolutePath);
var cr = context.ContentResolver;
var uri = cr.Insert(MediaStore.Images.Media.ExternalContentUri, values);
var contentUri = uri;
var mediaScanIntent = new Intent(Intent.ActionMediaScannerScanFile, contentUri);
mediaScanIntent.SetData(contentUri);
context.SendBroadcast(mediaScanIntent);
}
catch (Exception)
{
// Console.WriteLine("Unable to save to scan file: " + ex1);
}
}
public async Task <bool> SavePhotoAsnyc(byte[] data, string folder, string filename)
{
try
{
if (ContextCompat.CheckSelfPermission(MainActivity.Instance, Manifest.Permission.WriteExternalStorage) != PermissionChecker.PermissionGranted)
{
ActivityCompat.RequestPermissions(MainActivity.Instance, new string[] { Manifest.Permission.WriteExternalStorage }, 1000);
}
File picturesDirectory = Environment.GetExternalStoragePublicDirectory(Environment.DirectoryPictures);
File folderDirectory;
if (!string.IsNullOrEmpty(folder))
{
folderDirectory = new File(picturesDirectory.ToString(), folder);
folderDirectory.Mkdirs();
}
else
{
folderDirectory = picturesDirectory;
}
using (File bitmapFile = new File("/storage/emulated/0/Download", filename))
{
bitmapFile.CreateNewFile();
using (FileStream outputStream = new FileStream(bitmapFile.ToString(), FileMode.Open))
{
await outputStream.WriteAsync(data);
}
// Make sure it shows up in the Photos gallery promptly.
MediaScannerConnection.ScanFile(MainActivity.Instance,
new string[] { bitmapFile.Path },
new string[] { "image/png", "image/jpeg" }, null);
}
}
catch
{
return(false);
}
return(true);
}
public void OnPictureTaken(byte[] data, Camera camera)
{
Java.IO.File ExternalStorageUserRootFolder;
Java.IO.File ImageFolderExternalStorage;
try
{
// Obtém o caminho da pasta raiz do aplicativo
ExternalStorageUserRootFolder = new Java.IO.File(Android.OS.Environment.ExternalStorageDirectory + Java.IO.File.Separator + "SeeLocker");
// Obtém oc aminho da pasta de imagens do aplicativo
var strImagePath = ExternalStorageUserRootFolder.ToString() + Java.IO.File.Separator + "Images";
// Se a pasta de iamgens não existe
if (!System.IO.Directory.Exists(strImagePath))
{
// Cria a pasta de imagens
ImageFolderExternalStorage = new Java.IO.File(strImagePath);
ImageFolderExternalStorage.Mkdirs();
}
Android.Graphics.Bitmap bitmapPicture = Android.Graphics.BitmapFactory.DecodeByteArray(data, 0, data.Length);
bitmapPictureBackup = Android.Graphics.BitmapFactory.DecodeByteArray(data, 0, data.Length);
String PhotoName = String.Format("{0}.jpg", Guid.NewGuid());
System.IO.Stream fos = new System.IO.FileStream(strImagePath + "/" + PhotoName, System.IO.FileMode.Create);
bitmapPicture.Compress(Android.Graphics.Bitmap.CompressFormat.Jpeg, 50, fos);
fos.Flush();
fos.Close();
bitmapPicture.Dispose();
//Toast.MakeText(Application.Context, "Success", ToastLength.Long).Show();
}
catch (Exception ex)
{
}
finally
{
camera.StartPreview();
}
}
private void writeInStorage(String fileName, String TEXT)
{
bool test;
Context sContext = Android.App.Application.Context;
try
{
Java.IO.File dirv = new Java.IO.File(Android.OS.Environment.GetExternalStoragePublicDirectory(Android.OS.Environment.DirectoryDocuments).AbsolutePath + "/AndroidTest/" + fileName + ".txt");
Java.IO.File path = new Java.IO.File(Android.OS.Environment.GetExternalStoragePublicDirectory(Android.OS.Environment.DirectoryDocuments).AbsolutePath + "/AndroidTest");;
if (!path.Exists())
{
path.Mkdirs();
}
//Java.IO.File dirv = new Java.IO.File("/storage/emulated/AndroidTest");
if (!dirv.Exists())//工作目录是否存在？
{
test = dirv.CreateNewFile();
}
FileStream fileOS = new FileStream(dirv.ToString(), System.IO.FileMode.OpenOrCreate, System.IO.FileAccess.Write);
//String str = "this is a test about Write SD card file";
Java.IO.BufferedWriter buf1 = new Java.IO.BufferedWriter(new Java.IO.OutputStreamWriter(fileOS));
buf1.Write(TEXT, 0, TEXT.Length);
buf1.Flush();
buf1.Close();
fileOS.Close();
Toast.MakeText(sContext, "写入完成", ToastLength.Short).Show();
}
catch (Java.IO.FileNotFoundException e)
{
Toast.MakeText(sContext, e.ToString(), ToastLength.Short).Show();
}
catch (UnsupportedEncodingException e)
{
Toast.MakeText(sContext, e.ToString(), ToastLength.Short).Show();
}
catch (Java.IO.IOException e)
{
Toast.MakeText(sContext, e.ToString(), ToastLength.Short).Show();
}
}
private void SaveOutput(Bitmap croppedImage)
{
if (this.SaveUri != null)
{
Stream outputStream = null;
try {
outputStream = ContentResolver.OpenOutputStream(this.SaveUri);
if (outputStream != null)
{
croppedImage.Compress(this.OutputFormat, this.OutputQuality, outputStream);
}
} catch (System.IO.IOException ex) {
System.Diagnostics.Debug.WriteLine("Cannot open file {0} {1}", this.SaveUri, ex);
} finally {
outputStream.Close(); // try catch?
}
Bundle extras = new Bundle();
this.SetResult(Result.Ok, new Intent(this.SaveUri.ToString()).PutExtras(extras));
}
else
{
Bundle extras = new Bundle();
extras.PutString("rect", this.MCrop.GetCropRect().ToString());
Java.IO.File oldPath = new Java.IO.File(this.Image.DataPath);
Java.IO.File directory = new Java.IO.File(oldPath.Parent);
int x = 0;
string fileName = oldPath.Name;
fileName = fileName.Substring(0, fileName.LastIndexOf("."));
// Try file-1.jpg, file-2.jpg, ... until we find a filename which
// does not exist yet.
while (true)
{
x += 1;
string candidate = directory.ToString() + "/" + fileName + "-" + x + ".jpg";
bool exists = (new Java.IO.File(candidate)).Exists();
if (!exists)
{
break;
}
}
try {
int[] degree = new int [1];
Android.Net.Uri newUri = ImageManager.AddImage(ContentResolver,
this.Image.Title,
this.Image.DateTaken,
null,
directory.ToString(),
fileName + "-" + x + ".jpg", croppedImage, null,
degree);
this.SetResult(Result.Ok, new Intent().SetAction(newUri.ToString()).PutExtras(extras));
} catch (Java.Lang.Exception ex) {
// basically ignore this or put up
// some ui saying we failed
System.Diagnostics.Debug.WriteLine("storge image fail, continue anyway {0}", ex);
}
}
Bitmap b = croppedImage;
this.MHandler.Post(() => {
this.ImageView.Clear();
b.Recycle();
});
this.Finish();
}
/**
* Tests extraction from an MP4 to a series of PNG files.
* <p>
* We scale the video to 640x480 for the PNG just to demonstrate that we can scale the
* video with the GPU. If the input video has a different aspect ratio, we could preserve
* it by adjusting the GL viewport to get letterboxing or pillarboxing, but generally if
* you're extracting frames you don't want black bars.
*/
public void extractMpegFrames(int saveWidth, int saveHeight)
{
MediaCodec decoder = null;
CodecOutputSurface outputSurface = null;
MediaExtractor extractor = null;
try
{
// must be an absolute path The MediaExtractor error messages aren't very useful. Check to see if the input file exists so we can throw a better one if it's not there.
File inputFile = new File(_filesdir, INPUT_FILE);
if (!inputFile.CanRead())
{
throw new FileNotFoundException("Unable to read " + inputFile);
}
extractor = new MediaExtractor();
extractor.SetDataSource(inputFile.ToString());
int trackIndex = selectTrack(extractor);
if (trackIndex < 0)
{
throw new RuntimeException("No video track found in " + inputFile);
}
extractor.SelectTrack(trackIndex);
MediaFormat format = extractor.GetTrackFormat(trackIndex);
if (VERBOSE)
{
Log.Info(TAG, "Video size is " + format.GetInteger(MediaFormat.KeyWidth) + "x" + format.GetInteger(MediaFormat.KeyHeight));
}
// Could use width/height from the MediaFormat to get full-size frames.
outputSurface = new CodecOutputSurface(saveWidth, saveHeight);
// Create a MediaCodec decoder, and configure it with the MediaFormat from the
// extractor. It's very important to use the format from the extractor because
// it contains a copy of the CSD-0/CSD-1 codec-specific data chunks.
String mime = format.GetString(MediaFormat.KeyMime);
decoder = MediaCodec.CreateDecoderByType(mime);
decoder.Configure(format, outputSurface.getSurface(), null, 0);
decoder.Start();
doExtract(extractor, trackIndex, decoder, outputSurface);
}
finally
{
// release everything we grabbed
if (outputSurface != null)
{
outputSurface.release();
outputSurface = null;
}
if (decoder != null)
{
decoder.Stop();
decoder.Release();
decoder = null;
}
if (extractor != null)
{
extractor.Release();
extractor = null;
}
}
}
private string GetCardPath()
{
Java.IO.File sdDir = Android.OS.Environment.ExternalStorageDirectory;//获取手机根目录
return(sdDir.ToString());
}
public override void OnActivityResult (int requestCode, int resultCode, Intent data)
{
if (resultCode == (int)Result.Canceled)
return;
if (requestCode == None)
return;
if (requestCode == PhotoTake) {
if (resultCode !=(int) Result.Ok)
return;
//拍照
Java.IO.File picture = new Java.IO.File(Android.OS.Environment.ExternalStorageDirectory.ToString()+"/"+Android.OS.Environment.DirectoryDcim.ToString() + "/head.jpg");
if (System.IO.File.Exists(picture.ToString()))
{
CropPhoto(Android.Net.Uri.FromFile(picture));
}
}
if (data == null)
return;
if (requestCode == PhotoPick) {//选取照片
if (resultCode != (int)Result.Ok)
return;
CropPhoto(data.Data);
}
//处理结果
if (requestCode == PhotoResult) {
Bundle extras = data.Extras;
if (extras != null)
{
Bitmap photo = (Bitmap)extras.GetParcelable("data");
img_head.SetImageBitmap (photo);
//将图像保存至本地和服务器上
SetPicToLocalAndServer(photo);//保存在SD卡中
}
}
base.OnActivityResult (requestCode, resultCode, data);
}
//public static void ShowOkAlert(Context context,string Message)
//{
// AlertDialog.Builder alert = new AlertDialog.Builder(context);
// alert.SetMessage(Message);
// alert.SetPositiveButton("Ok", (senderAlert, args) => {
// });
// Dialog dialog = alert.Create();
// dialog.Show();
//}
//Download from url------------------------------------------
public static async void DownLoadSource(string url, Java.IO.File _appDirectory, Java.IO.File newFile, string filePath, Context context, string FileName, int notificationId)
{
// ShowToast(context, context.Resources.GetString(Resource.String.downloading) + Newsrc);
var NotificationId = notificationId;
string localPath;
try
{
System.Uri uri = new System.Uri(url);
WebClient webClient = new WebClient();
string localFileName;
webClient.DownloadDataAsync(uri);
Log.Debug("tag", "File to download = " + newFile.ToString());
MimeTypeMap mime = MimeTypeMap.Singleton;
String ext = newFile.Name.Substring(newFile.Name.IndexOf(".") + 1);
String type = mime.GetMimeTypeFromExtension(ext);
Intent openFile = new Intent(Intent.ActionView, Android.Net.Uri.FromFile(newFile));
openFile.SetDataAndType(Android.Net.Uri.FromFile(newFile), type);
openFile.AddFlags(ActivityFlags.ClearTop | ActivityFlags.SingleTop | ActivityFlags.NewTask);
PendingIntent p = PendingIntent.GetActivity(context, 0, openFile, 0);
var notification = new Android.Support.V4.App.NotificationCompat.Builder(context)
.SetSmallIcon(Android.Resource.Drawable.StatNotifySync)
.SetContentTitle(FileName)
.SetContentText(" Downloading")
.SetOngoing(false);
notification.SetProgress(0, 0, true);
NotificationManager notificationmanager = (NotificationManager)Android.App.Application.Context.GetSystemService(Service.NotificationService);
// Build Notification with Notification Manager
notificationmanager.Notify((int)NotificationId, notification.Build());
webClient.DownloadDataCompleted += (s, e) =>
{
try
{
if (!_appDirectory.Exists())
{
_appDirectory.Mkdirs();
}
var bytes = e.Result; // get the downloaded data
{
notification.SetContentText(" Downloaded");
notification.SetContentTitle(FileName);
notification.SetContentIntent(p);
notification.SetProgress(0, 0, false);
notification.SetAutoCancel(true);// Notification.Flags = NotificationFlags.AutoCancel;
//System.IO.File.WriteAllBytes(filePath, bytes);
notificationmanager.Notify((int)NotificationId, notification.Build());
// writes to local storage
}
}
catch (Exception ex)
{
}
};
}
catch (System.Exception ex)
{
}
}
