public async Task <FileResult> PickAsync(MediaPickerOptions options, bool photo)
{
var intent = new Intent(Intent.ActionGetContent);
intent.SetType(photo ? FileMimeTypes.ImageAll : FileMimeTypes.VideoAll);
var pickerIntent = Intent.CreateChooser(intent, options?.Title);
try
{
string path = null;
void OnResult(Intent intent)
{
// The uri returned is only temporary and only lives as long as the Activity that requested it,
// so this means that it will always be cleaned up by the time we need it because we are using
// an intermediate activity.
path = FileSystemUtils.EnsurePhysicalPath(intent.Data);
}
await IntermediateActivity.StartAsync(pickerIntent, PlatformUtils.requestCodeMediaPicker, onResult : OnResult);
return(new FileResult(path));
}
catch (OperationCanceledException)
{
return(null);
}
}
static async Task <FileResult> PlatformPickAsync(MediaPickerOptions options, bool photo)
{
// We only need the permission when accessing the file, but it's more natural
// to ask the user first, then show the picker.
await Permissions.RequestAsync <Permissions.StorageRead>();
var intent = new Intent(Intent.ActionGetContent);
intent.SetType(photo ? FileSystem.MimeTypes.ImageAll : FileSystem.MimeTypes.VideoAll);
var pickerIntent = Intent.CreateChooser(intent, options?.Title);
try
{
string path = null;
void OnResult(Intent intent)
{
// The uri returned is only temporary and only lives as long as the Activity that requested it,
// so this means that it will always be cleaned up by the time we need it because we are using
// an intermediate activity.
path = FileSystem.EnsurePhysicalPath(intent.Data);
}
await IntermediateActivity.StartAsync(pickerIntent, Platform.requestCodeMediaPicker, onResult : OnResult);
return(new FileResult(path));
}
catch (OperationCanceledException)
{
return(null);
}
}
static async Task <IEnumerable <FilePickerResult> > PlatformPickAsync(PickOptions options, bool allowMultiple = false)
{
// we only need the permission when accessing the file, but it's more natural
// to ask the user first, then show the picker.
await Permissions.RequestAsync <Permissions.StorageRead>();
// Essentials supports >= API 19 where this action is available
var action = Intent.ActionOpenDocument;
var intent = new Intent(action);
intent.SetType("*/*");
intent.AddFlags(ActivityFlags.GrantPersistableUriPermission);
intent.PutExtra(Intent.ExtraAllowMultiple, allowMultiple);
var allowedTypes = options?.FileTypes?.Value?.ToArray();
if (allowedTypes?.Length > 0)
{
intent.PutExtra(Intent.ExtraMimeTypes, allowedTypes);
}
var pickerIntent = Intent.CreateChooser(intent, options?.PickerTitle ?? "Select file");
try
{
var result = await IntermediateActivity.StartAsync(pickerIntent, requestCodeFilePicker);
var resultList = new List <FilePickerResult>();
var clipData = new List <global::Android.Net.Uri>();
if (result.ClipData == null)
{
clipData.Add(result.Data);
}
else
{
for (var i = 0; i < result.ClipData.ItemCount; i++)
{
clipData.Add(result.ClipData.GetItemAt(i).Uri);
}
}
foreach (var contentUri in clipData)
{
Platform.AppContext.ContentResolver.TakePersistableUriPermission(
contentUri,
ActivityFlags.GrantReadUriPermission);
resultList.Add(new FilePickerResult(contentUri));
}
return(resultList);
}
catch (OperationCanceledException)
{
return(null);
}
}
public static async void StartOrStop(Activity activity, bool startOrStop)
{
if (ProxySettings.IsVpnMode.Value)
{
if (startOrStop)
{
// 调用 VpnService.prepare() 以询问权限（需要时）
var intent = AndroidNetVpnService.Prepare(activity);
if (intent != null)
{
void OnResult(Intent intent)
=> activity.StartOrStopForegroundService <VpnService>(true);
await IntermediateActivity.StartAsync(intent,
requestCodeVpnService, onResult : OnResult);
return;
}
}
// 不需要授权则直接启动
activity.StartOrStopForegroundService <VpnService>(startOrStop);
}
else
{
activity.StartOrStopForegroundService <Service>(startOrStop);
}
}
static async Task <FileResult> PlatformCaptureAsync(MediaPickerOptions options, bool photo)
{
await Permissions.EnsureGrantedAsync <Permissions.Camera>();
await Permissions.EnsureGrantedAsync <Permissions.StorageWrite>();
var capturePhotoIntent = new Intent(photo ? MediaStore.ActionImageCapture : MediaStore.ActionVideoCapture);
if (capturePhotoIntent.ResolveActivity(Platform.AppContext.PackageManager) != null)
{
try
{
var activity = Platform.GetCurrentActivity(true);
var storageDir = Platform.AppContext.ExternalCacheDir;
var tmpFile = Java.IO.File.CreateTempFile(Guid.NewGuid().ToString(), photo ? ".jpg" : ".mp4", storageDir);
tmpFile.DeleteOnExit();
capturePhotoIntent.AddFlags(ActivityFlags.GrantReadUriPermission);
capturePhotoIntent.AddFlags(ActivityFlags.GrantWriteUriPermission);
var result = await IntermediateActivity.StartAsync(capturePhotoIntent, Platform.requestCodeMediaCapture, tmpFile);
var outputUri = result.GetParcelableExtra(IntermediateActivity.OutputUriExtra) as global::Android.Net.Uri;
return(new FileResult(outputUri));
}
catch (OperationCanceledException)
{
return(null);
}
}
return(null);
}
static async Task <IEnumerable <FileResult> > PlatformPickAsync(PickOptions options, bool allowMultiple = false)
{
// we only need the permission when accessing the file, but it's more natural
// to ask the user first, then show the picker.
await Permissions.RequestAsync <Permissions.StorageRead>();
// Essentials supports >= API 19 where this action is available
var action = Intent.ActionOpenDocument;
var intent = new Intent(action);
intent.SetType(FileSystem.MimeTypes.All);
intent.PutExtra(Intent.ExtraAllowMultiple, allowMultiple);
var allowedTypes = options?.FileTypes?.Value?.ToArray();
if (allowedTypes?.Length > 0)
{
intent.PutExtra(Intent.ExtraMimeTypes, allowedTypes);
}
var pickerIntent = Intent.CreateChooser(intent, options?.PickerTitle ?? "Select file");
try
{
var resultList = new List <FileResult>();
void OnResult(Intent intent)
{
// The uri returned is only temporary and only lives as long as the Activity that requested it,
// so this means that it will always be cleaned up by the time we need it because we are using
// an intermediate activity.
if (intent.ClipData == null)
{
var path = FileSystem.EnsurePhysicalPath(intent.Data);
resultList.Add(new FileResult(path));
}
else
{
for (var i = 0; i < intent.ClipData.ItemCount; i++)
{
var uri = intent.ClipData.GetItemAt(i).Uri;
var path = FileSystem.EnsurePhysicalPath(uri);
resultList.Add(new FileResult(path));
}
}
}
await IntermediateActivity.StartAsync(pickerIntent, Platform.requestCodeFilePicker, onResult : OnResult);
return(resultList);
}
catch (OperationCanceledException)
{
return(null);
}
}
public async Task <FileResult> CaptureAsync(MediaPickerOptions options, bool photo)
{
if (!IsCaptureSupported)
{
throw new FeatureNotSupportedException();
}
await Permissions.EnsureGrantedAsync <Permissions.Camera>();
await Permissions.EnsureGrantedAsync <Permissions.StorageWrite>();
var capturePhotoIntent = new Intent(photo ? MediaStore.ActionImageCapture : MediaStore.ActionVideoCapture);
if (!PlatformUtils.IsIntentSupported(capturePhotoIntent))
{
throw new FeatureNotSupportedException($"Either there was no camera on the device or '{capturePhotoIntent.Action}' was not added to the <queries> element in the app's manifest file. See more: https://developer.android.com/about/versions/11/privacy/package-visibility");
}
capturePhotoIntent.AddFlags(ActivityFlags.GrantReadUriPermission);
capturePhotoIntent.AddFlags(ActivityFlags.GrantWriteUriPermission);
try
{
var activity = ActivityStateManager.Default.GetCurrentActivity(true);
// Create the temporary file
var ext = photo
? FileExtensions.Jpg
: FileExtensions.Mp4;
var fileName = Guid.NewGuid().ToString("N") + ext;
var tmpFile = FileSystemUtils.GetTemporaryFile(Application.Context.CacheDir, fileName);
// Set up the content:// uri
AndroidUri outputUri = null;
void OnCreate(Intent intent)
{
// Android requires that using a file provider to get a content:// uri for a file to be called
// from within the context of the actual activity which may share that uri with another intent
// it launches.
outputUri ??= FileProvider.GetUriForFile(tmpFile);
intent.PutExtra(MediaStore.ExtraOutput, outputUri);
}
// Start the capture process
await IntermediateActivity.StartAsync(capturePhotoIntent, PlatformUtils.requestCodeMediaCapture, OnCreate);
// Return the file that we just captured
return(new FileResult(tmpFile.AbsolutePath));
}
catch (OperationCanceledException)
{
return(null);
}
}
static async Task <Contact> PlatformPickContactAsync()
{
using var intent = new Intent(Intent.ActionPick);
intent.SetType(ContactsContract.CommonDataKinds.Phone.ContentType);
var result = await IntermediateActivity.StartAsync(intent, Platform.requestCodePickContact).ConfigureAwait(false);
if (result?.Data != null)
{
return(PlatformGetContacts(result.Data));
}
return(null);
}
public async Task <FilePicker2.SaveFileResult?> PlatformSaveAsync(FilePicker2.SaveOptions?options)
{
// https://developer.android.google.cn/training/data-storage/shared/documents-files?hl=zh-cn#create-file
// https://github.com/xamarin/Essentials/blob/main/Xamarin.Essentials/MediaPicker/MediaPicker.android.cs
var intent = new Intent(Intent.ActionCreateDocument);
intent.AddCategory(Intent.CategoryOpenable);
intent.SetType(MediaTypeNames.All);
if (options != null)
{
if (!string.IsNullOrEmpty(options.InitialFileName))
{
intent.PutExtra(Intent.ExtraTitle, options.InitialFileName);
}
var mimetypes = options.FileTypes?.Value;
if (mimetypes.Any_Nullable())
{
intent.PutExtra(Intent.ExtraMimeTypes, mimetypes.ToArray());
}
}
try
{
FilePicker2.SaveFileResult?result = null;
void OnResult(Intent intent)
{
// The uri returned is only temporary and only lives as long as the Activity that requested it,
// so this means that it will always be cleaned up by the time we need it because we are using
// an intermediate activity.
var uri = intent.Data;
if (uri != null)
{
var uriString = uri.ToString();
var outputStream = XEPlatform.AppContext.ContentResolver !.OpenOutputStream(uri);
result = new FilePicker2.SaveFileResult(outputStream ?? throw new ArgumentNullException(nameof(outputStream)), uriString);
}
}
await IntermediateActivity.StartAsync(intent, requestCodeSaveFileDialog, onResult : OnResult);
return(result);
}
catch (OperationCanceledException)
{
return(null);
}
}
static async Task <Contact> PlatformPickContactAsync()
{
var intent = new Intent(Intent.ActionPick, ContactsContract.Contacts.ContentUri);
var result = await IntermediateActivity.StartAsync(intent, Platform.requestCodePickContact).ConfigureAwait(false);
if (result?.Data == null)
{
return(null);
}
using var cursor = Platform.ContentResolver.Query(result?.Data, null, null, null, null);
if (cursor?.MoveToFirst() != true)
{
return(null);
}
return(GetContact(cursor));
}
static async Task <FileResult> PlatformPickAsync(MediaPickerOptions options, bool photo)
{
// we only need the permission when accessing the file, but it's more natural
// to ask the user first, then show the picker.
await Permissions.RequestAsync <Permissions.StorageRead>();
var intent = new Intent(Intent.ActionGetContent);
intent.SetType(photo ? "image/*" : "video/*");
var pickerIntent = Intent.CreateChooser(intent, options?.Title);
try
{
var result = await IntermediateActivity.StartAsync(pickerIntent, Platform.requestCodeMediaPicker);
return(new FileResult(result.Data));
}
catch (OperationCanceledException)
{
return(null);
}
}
