bool CheckPermissions(string permission, bool throwOnError = true)
{
var result = true;
var perf = PerformanceCounter.Start();
Android.Util.Log.Debug(MobileBarcodeScanner.TAG, "Checking " + permission + "...");
if (!PlatformChecks.IsPermissionInManifest(this.Context, permission) ||
!PlatformChecks.IsPermissionGranted(this.Context, permission))
{
result = false;
if (throwOnError)
{
var msg = "ZXing.Net.Mobile requires: " + permission + ", but was not found in your AndroidManifest.xml file.";
Android.Util.Log.Error("ZXing.Net.Mobile", msg);
throw new UnauthorizedAccessException(msg);
}
}
PerformanceCounter.Stop(perf, "CheckPermissions took {0}ms");
return(result);
}
public void Torch(bool on)
{
if (!this.Context.PackageManager.HasSystemFeature(PackageManager.FeatureCameraFlash))
{
Android.Util.Log.Info(MobileBarcodeScanner.TAG, "Flash not supported on this device");
return;
}
if (!PlatformChecks.IsPermissionInManifest(this.Context, Android.Manifest.Permission.Flashlight) ||
!PlatformChecks.IsPermissionGranted(this.Context, Android.Manifest.Permission.Flashlight))
{
var msg = "ZXing.Net.Mobile requires permission to use the Flash (" + Android.Manifest.Permission.Flashlight + "), but was not found in your AndroidManifest.xml file.";
Android.Util.Log.Error(MobileBarcodeScanner.TAG, msg);
throw new UnauthorizedAccessException(msg);
}
if (camera == null)
{
Android.Util.Log.Info(MobileBarcodeScanner.TAG, "NULL Camera");
return;
}
var p = camera.GetParameters();
var supportedFlashModes = p.SupportedFlashModes;
if (supportedFlashModes == null)
{
supportedFlashModes = new List <string>();
}
var flashMode = string.Empty;
if (on)
{
if (supportedFlashModes.Contains(Android.Hardware.Camera.Parameters.FlashModeTorch))
{
flashMode = Android.Hardware.Camera.Parameters.FlashModeTorch;
}
else if (supportedFlashModes.Contains(Android.Hardware.Camera.Parameters.FlashModeOn))
{
flashMode = Android.Hardware.Camera.Parameters.FlashModeOn;
}
isTorchOn = true;
}
else
{
if (supportedFlashModes.Contains(Android.Hardware.Camera.Parameters.FlashModeOff))
{
flashMode = Android.Hardware.Camera.Parameters.FlashModeOff;
}
isTorchOn = false;
}
if (!string.IsNullOrEmpty(flashMode))
{
p.FlashMode = flashMode;
camera.SetParameters(p);
}
}
protected override void OnResume()
{
base.OnResume();
var permissionsToRequest = new List <string> ();
// Check and request any permissions
foreach (var permission in RequiredPermissions)
{
if (PlatformChecks.IsPermissionInManifest(this, permission))
{
if (!PlatformChecks.IsPermissionGranted(this, permission))
{
permissionsToRequest.Add(permission);
}
}
}
if (permissionsToRequest.Any())
{
PlatformChecks.RequestPermissions(this, permissionsToRequest.ToArray(), 101);
}
else
{
StartScanning();
}
}
protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
this.RequestWindowFeature(WindowFeatures.NoTitle);
this.Window.AddFlags(WindowManagerFlags.Fullscreen); //to show
this.Window.AddFlags(WindowManagerFlags.KeepScreenOn); //Don't go to sleep while scanning
if (ScanningOptions.AutoRotate.HasValue && !ScanningOptions.AutoRotate.Value)
{
RequestedOrientation = ScreenOrientation.Nosensor;
}
SetContentView(Resource.Layout.zxingscanneractivitylayout);
scannerFragment = new ZXingScannerFragment();
scannerFragment.CustomOverlayView = CustomOverlayView;
scannerFragment.UseCustomOverlayView = UseCustomOverlayView;
scannerFragment.TopText = TopText;
scannerFragment.BottomText = BottomText;
SupportFragmentManager.BeginTransaction()
.Replace(Resource.Id.contentFrame, scannerFragment, "ZXINGFRAGMENT")
.Commit();
CancelRequestedHandler = CancelScan;
AutoFocusRequestedHandler = AutoFocus;
TorchRequestedHandler = SetTorch;
PauseAnalysisHandler = scannerFragment.PauseAnalysis;
ResumeAnalysisHandler = scannerFragment.ResumeAnalysis;
var permissionsToRequest = new List <string> ();
// Check and request any permissions
foreach (var permission in RequiredPermissions)
{
if (PlatformChecks.IsPermissionInManifest(this, permission))
{
if (!PlatformChecks.IsPermissionGranted(this, permission))
{
permissionsToRequest.Add(permission);
}
}
}
if (permissionsToRequest.Any())
{
waitingForPermission = PlatformChecks.RequestPermissions(this, permissionsToRequest.ToArray(), 101);
}
}
void CheckPermissions()
{
var perf = PerformanceCounter.Start();
Android.Util.Log.Debug(MobileBarcodeScanner.TAG, "Checking Camera Permissions...");
if (!PlatformChecks.IsPermissionInManifest(this.Context, Android.Manifest.Permission.Camera) ||
!PlatformChecks.IsPermissionGranted(this.Context, Android.Manifest.Permission.Camera))
{
var msg = "ZXing.Net.Mobile requires permission to use the Camera (" + Android.Manifest.Permission.Camera + "), but was not found in your AndroidManifest.xml file.";
Android.Util.Log.Error("ZXing.Net.Mobile", msg);
throw new UnauthorizedAccessException(msg);
}
PerformanceCounter.Stop(perf, "CheckPermissions took {0}ms");
}