void ToggleFlashButtonTapped(object sender, EventArgs e)
{
flashOn = !flashOn;
if (flashOn)
{
if (cameraType == CameraFacing.Back)
{
toggleFlashButton.SetBackgroundResource(Resource.Drawable.FlashButton);
cameraType = CameraFacing.Back;
camera.StopPreview();
camera.Release();
camera = global::Android.Hardware.Camera.Open((int)cameraType);
var parameters = camera.GetParameters();
parameters.FlashMode = global::Android.Hardware.Camera.Parameters.FlashModeTorch;
camera.SetParameters(parameters);
camera.SetPreviewTexture(surfaceTexture);
PrepareAndStartCamera();
}
}
else
{
toggleFlashButton.SetBackgroundResource(Resource.Drawable.NoFlashButton);
camera.StopPreview();
camera.Release();
camera = global::Android.Hardware.Camera.Open((int)cameraType);
var parameters = camera.GetParameters();
parameters.FlashMode = global::Android.Hardware.Camera.Parameters.FlashModeOff;
camera.SetParameters(parameters);
camera.SetPreviewTexture(surfaceTexture);
PrepareAndStartCamera();
}
}
public void OnSurfaceTextureAvailable(SurfaceTexture surface, int width, int height)
{
camera = global::Android.Hardware.Camera.Open((int)cameraType);
textureView.LayoutParameters = new FrameLayout.LayoutParams(width, height);
surfaceTexture = surface;
camera.SetPreviewTexture(surface);
RequestLayout();
PrepareAndStartCamera();
}
void SwitchCameraButtonTapped(object sender, EventArgs e)
{
if (cameraType == CameraFacing.Front)
{
cameraType = CameraFacing.Back;
camera.StopPreview();
camera.Release();
camera = global::Android.Hardware.Camera.Open((int)cameraType);
camera.SetPreviewTexture(surfaceTexture);
PrepareAndStartCamera();
}
else
{
cameraType = CameraFacing.Front;
camera.StopPreview();
camera.Release();
camera = global::Android.Hardware.Camera.Open((int)cameraType);
camera.SetPreviewTexture(surfaceTexture);
PrepareAndStartCamera();
}
}
