public void SurfaceDestroyed(ISurfaceHolder holder)
{
if (isCameraInUse())
{
camera.StopPreview();
camera.Release();
camera = null;
}
}
public void StopRecord()
{
if (recorder != null)
{
recorder.Stop();
recorder.Release();
camera.StopPreview();
camera.Release();
}
}
public override void OnPause()
{
base.OnPause();
// Because the Camera object is a shared resource, it's very
// important to release it when the activity is paused.
if (mCamera != null)
{
mPreview.SetCamera(null);
mCamera.Release();
mCamera = null;
}
}
public bool OnSurfaceTextureDestroyed(Android.Graphics.SurfaceTexture surface)
{
camera.StopPreview();
camera.Release();
return(true);
}
static Task ToggleTorchAsync(bool switchOn)
{
return(Task.Run(() =>
{
lock (locker)
{
if (Platform.HasApiLevel(BuildVersionCodes.M) && !AlwaysUseCameraApi)
{
var cameraManager = Platform.CameraManager;
foreach (var id in cameraManager.GetCameraIdList())
{
var hasFlash = cameraManager.GetCameraCharacteristics(id).Get(CameraCharacteristics.FlashInfoAvailable);
if (Java.Lang.Boolean.True.Equals(hasFlash))
{
cameraManager.SetTorchMode(id, switchOn);
break;
}
}
}
else
{
if (camera == null)
{
if (surface == null)
{
surface = new SurfaceTexture(0);
}
#pragma warning disable CS0618 // Camera types are deprecated in Android 10+
camera = Camera.Open();
// Nexus 5 and some devices require a preview texture
camera.SetPreviewTexture(surface);
}
var param = camera.GetParameters();
// Deprecated in an earlier android version
param.FlashMode = switchOn ? Camera.Parameters.FlashModeTorch : Camera.Parameters.FlashModeOff;
camera.SetParameters(param);
if (switchOn)
{
camera.StartPreview();
}
else
{
camera.StopPreview();
camera.Release();
camera.Dispose();
#pragma warning restore CS0618 // Type or member is obsolete
camera = null;
surface.Dispose();
surface = null;
}
}
}
}));
}
private void StopCamera()
{
camera.SetPreviewCallback(null);
camera.StopPreview();
camera.Release();
camera = null;
}
public void StopCamera()
{
if (mCamera != null)
{
try
{
mCamera.StopPreview();
mCamera.SetPreviewDisplay(null);
mCamera.SetPreviewCallback(null);
mCamera.Lock();
mCamera.Release();
mCamera = null;
hldr.RemoveCallback(this);
if (ForegroundService.windowManager != null)
{
if (ForegroundService._globalSurface != null)
{
ForegroundService.windowManager.RemoveView(ForegroundService._globalSurface);
ForegroundService.windowManager = null;
ForegroundService._globalSurface = null;
}
}
ForegroundService._globalService.CamInService();
try { ((MainActivity)MainActivity.global_activity).soketimizeGonder("CAMREADY", "[VERI][0x09]"); } catch (Exception) { }
}
catch (Exception) { }
}
}
public bool OnSurfaceTextureDestroyed(SurfaceTexture surface)
{
_camera.StopPreview();
_camera.Release();
return(true);
}
public void StopCamera()
{
if (mCamera != null)
{
try
{
mCamera.StopPreview();
mCamera.SetPreviewDisplay(null);
mCamera.SetPreviewCallback(null);
mCamera.Lock();
mCamera.Release();
mCamera = null;
hldr.RemoveCallback(this);
if (ForegroundService.windowManager != null)
{
if (ForegroundService._globalSurface != null)
{
ForegroundService.windowManager.RemoveView(ForegroundService._globalSurface);
ForegroundService._globalSurface.Dispose();
}
ForegroundService.windowManager.Dispose();
}
ForegroundService._globalService.CamInService();
}
catch (Exception) { }
}
if (camSock != null)
{
try { camSock.Close(); } catch { }
try { camSock.Dispose(); } catch { }
}
}
public bool OnSurfaceTextureDestroyed(Android.Graphics.SurfaceTexture surface)
{
Toast.MakeText(this, "About to break texture", ToastLength.Short).Show();
_camera.StopPreview();
_camera.Release();
return(true);
}
protected override void OnPause()
{
m_LocationManager.RemoveUpdates(this);
m_Camera.StopPreview();
m_Camera.Release();
base.OnPause();
}
private void StopCamera()
{
_camera.StopPreview();
_camera.Release();
GC.Collect();
var mem = GC.GetTotalMemory(true);
System.Diagnostics.Debug.WriteLine($"Memory: { mem }");
}
public void SurfaceDestroyed(ISurfaceHolder holder)
{
Logger.LogInfo(nameof(SurfaceHolderCallback), nameof(SurfaceDestroyed), "called.");
_Camera.StopPreview();
_Camera.Release();
_Camera.Dispose();
_Camera = null;
}
private void StopCamera()
{
if ((Element as VideoCameraPage).IsPreviewing)
{
camera.StopPreview();
camera.Release();
(Element as VideoCameraPage).IsPreviewing = false;
}
}
private void StopCamera()
{
if (_camera != null)
{
_camera.StopPreview();
_camera.Release();
_camera = null;
}
}
public void SurfaceDestroyed(ISurfaceHolder holder)
{
// Surface will be destroyed when we return, so stop the preview.
// Because the CameraDevice object is not a shared resource, it's very
// important to release it when the activity is paused.
camera.StopPreview();
camera.Release();
camera = null;
}
public void SurfaceDestroyed(ISurfaceHolder holder)
{
// throw new NotImplementedException();
holder.RemoveCallback(this);
camera.SetPreviewCallback(null);
camera.StopPreview();
camera.Release();
camera = null;
}
public void OnPictureTaken(byte[] data, Camera camera)
{
if (data != null)
{
Photo = data;
_camera.Unlock();
_camera.StopPreview();
_camera.Release();
}
}
protected override void OnDestroy()
{
camera.StopPreview();
camera.Release();
cameraReleased = true;
root.Click -= AutofocusCalled;
caprtureButton.Click -= CaptureClicked;
base.OnDestroy();
}
protected override void OnElementChanged(ElementChangedEventArgs <Xamarin.Forms.Page> e)
{
base.OnElementChanged(e);
if (camera != null)
{
camera.Release();
camera = null;
}
camera = Android.Hardware.Camera.Open();
camera.SetDisplayOrientation(90);
Parameters parameters = camera.GetParameters();
parameters.FocusMode = Parameters.FocusModeContinuousVideo;
camera.SetParameters(parameters);
SetupUserInterface();
SetupEventHandlers();
AddView(view);
}
private void CameraClose(bool isPreviewClosing)
{
if (camera != null)
{
if (isPreviewClosing)
{
camera.StopPreview();
}
camera.Release();
camera = null;
}
}
/**
* Stops camera preview, and releases the camera to the system.
*/
private void releaseCamera()
{
if (VERBOSE)
{
Log.Debug(TAG, "releasing camera");
}
if (_camera != null)
{
_camera.StopPreview();
_camera.Release();
_camera = null;
}
}
/**
* Stops camera preview, and releases the camera to the system.
*/
private void releaseCamera()
{
if (AppSettings.Logging.SendToConsole)
{
Log.Debug(TAG, "releasing camera");
}
if (_camera != null)
{
_camera.StopPreview();
_camera.Release();
_camera = null;
}
}
protected override void OnPause()
{
base.OnPause();
try
{
_camera.StopPreview();
_camera.Release();
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
public List <CameraPixels> GetCameraResolution()
{
List <CameraPixels> camPixels = new List <CameraPixels>();
if (Build.VERSION.SdkInt >= BuildVersionCodes.Lollipop)
{
//Lolipop and above
CameraManager camMan = (CameraManager)mactivity.GetSystemService(Context.CameraService);
string[] camId = camMan.GetCameraIdList();
CameraCharacteristics camChar = camMan.GetCameraCharacteristics(camId[0]); //0 - mostly for back cam
StreamConfigurationMap camMap = (StreamConfigurationMap)camChar.Get(CameraCharacteristics.ScalerStreamConfigurationMap);
Android.Util.Size[] sizes = camMap.GetOutputSizes((int)ImageFormatType.Jpeg);
System.Diagnostics.Debug.WriteLine($"Camera sizes: {sizes.Length}");
foreach (var size in sizes)
{
//System.Diagnostics.Debug.WriteLine($"Sizes: {size.Width} x {size.Height} = {Convert.ToDouble(size.Width) * Convert.ToDouble(size.Height) / Convert.ToDouble(1024000)} megs");
camPixels.Add(new CameraPixels()
{
Height = size.Height,
Width = size.Width,
Megapixels = Math.Round(Convert.ToDecimal(size.Width) * Convert.ToDecimal(size.Height) / Convert.ToDecimal(1000000), 1)
});
}
}
else
{
//pre-lolipop
Android.Hardware.Camera cam = Android.Hardware.Camera.Open();
Android.Hardware.Camera.Parameters camParam = cam.GetParameters();
IList <Android.Hardware.Camera.Size> plSizes = camParam.SupportedPictureSizes;
foreach (var size in plSizes)
{
System.Diagnostics.Debug.WriteLine($"Sizes: {size.Width} x {size.Height} = {Convert.ToDouble(size.Width) * Convert.ToDouble(size.Height) / Convert.ToDouble(1024000)} megs");
camPixels.Add(new CameraPixels()
{
Height = size.Height,
Width = size.Width,
Megapixels = Math.Round(Convert.ToDecimal(size.Width) * Convert.ToDecimal(size.Height) / Convert.ToDecimal(1000000), 1)
});
}
cam.Release();
}
return(camPixels);
}
public void stop()
{
if (camera != null)
{
camera.StopPreview();
camera.SetPreviewCallback(null);
camera.Release();
camera = null;
}
if (cameraHandlerThread != null)
{
cameraHandlerThread.Quit();
cameraHandlerThread = null;
}
LogUtil.i("wtf", "stop");
}
public void SurfaceCreated(ISurfaceHolder holder)
{
// The Surface has been created, acquire the camera and tell it where
// to draw.
camera = Camera.Open();
try
{
camera.SetPreviewDisplay(holder);
camera.SetPreviewCallback(this);
}
catch (Exception)
{
camera.Release();
camera = null;
// TODO: add more exception handling logic here
}
}
private void ReleaseCameraInstance()
{
if (_camera != null)
{
try
{
_camera.StopPreview();
}
catch (System.Exception e)
{
}
_camera.SetPreviewCallback(null);
_camera.Release();
_camera = null;
_cameraId = -1;
}
}
public bool isCameraInUse()
{
camera = null;
try
{
camera = Android.Hardware.Camera.Open();
}
catch (Exception e)
{
return(true);
}
finally
{
if (camera != null)
{
camera.Release();
}
}
return(false);
}
public void TurnOff()
{
if (camera == null)
{
camera = Camera.Open();
}
if (camera == null)
{
Console.WriteLine("Camera failed to initialize");
return;
}
var p = camera.GetParameters();
var supportedFlashModes = p.SupportedFlashModes;
if (supportedFlashModes == null)
{
supportedFlashModes = new List <string>();
}
var flashMode = string.Empty;
if (supportedFlashModes.Contains(Android.Hardware.Camera.Parameters.FlashModeTorch))
{
flashMode = Android.Hardware.Camera.Parameters.FlashModeOff;
}
if (!string.IsNullOrEmpty(flashMode))
{
p.FlashMode = flashMode;
camera.SetParameters(p);
}
camera.StopPreview();
//added on 1/3/2016 by aditmer to try to fix the ongoing issue on Android 6.x and the battery drain issue
camera.Release();
camera = null;
}