/**
* Starts or restarts the camera source, if it exists. If the camera source doesn't exist yet
* (e.g., because onResume was called before the camera source was created), this will be called
* again when the camera source is created.
*/
private void StartCameraSource()
{
try
{
CameraSourcePreview.Start(MCameraSource, MGraphicOverlay);
}
catch (Exception e)
{
Android.Util.Log.Error(TAG, "Unable to start camera source.", e);
MCameraSource.Release();
MGraphicOverlay = null;
// Crashlytics.Crashlytics.LogException(Java.Lang.Throwable.FromException(e));
}
}
private void TorchFab_Click(object sender, EventArgs e)
{
if (CoreCamera == null)
{
var javaCam = MCameraSource.JavaCast <Java.Lang.Object>();
var fields = javaCam.Class.GetDeclaredFields();
foreach (Field field in fields)
{
if (!field.Type.CanonicalName.Equals("android.hardware.camera", StringComparison.OrdinalIgnoreCase))
{
continue;
}
field.Accessible = true;
Object camera = field.Get(javaCam);
CoreCamera = (Camera)camera;
}
}
if (!IsFlashOn)
{
if (CoreCamera != null)
{
Camera.Parameters prams = CoreCamera.GetParameters();
prams.FlashMode = Camera.Parameters.FlashModeTorch;
CoreCamera.SetParameters(prams);
}
IsFlashOn = true;
}
else
{
Camera.Parameters prams = CoreCamera.GetParameters();
prams.FlashMode = Camera.Parameters.FlashModeOff;
CoreCamera.SetParameters(prams);
IsFlashOn = false;
}
}
