public void OnStateChanged(ILifecycleOwner sender, Lifecycle.Event args)
{
if (args == Lifecycle.Event.OnStart)
{
if (wifiMonitor is null)
{
wifiMonitor = new WiFiStateReceiver();
var filter = new IntentFilter();
filter.AddAction(WifiManager.NetworkStateChangedAction);
RegisterReceiver(wifiMonitor, filter);
}
if (!fromBackground)
{
return;
}
fromBackground = false;
Globals.CloudManager?.StartNetwork(false);
return;
}
if (args == Lifecycle.Event.OnStop)
{
if (wifiMonitor != null)
{
UnregisterReceiver(wifiMonitor);
wifiMonitor = null;
}
fromBackground = true;
return;
}
}
public void OnStateChanged(ILifecycleOwner p0, Lifecycle.Event p1)
{
Stopped |= p1 == Lifecycle.Event.OnStop;
if (p1 == Lifecycle.Event.OnStart && Stopped)
{
// app is coming back from being in the background, do something...
Stopped = false; // reset
}
}
public async Task <string> StartUploadForIdAsync(Guid id)
{
Data.Builder data = new Data.Builder();
data.PutString("id", id.ToString());
OneTimeWorkRequest oneTimeWorkRequest = OneTimeWorkRequest.Builder.From <RandomUploadWorker>()
.SetInputData(data.Build())
.Build();
WorkManager.Instance.Enqueue(oneTimeWorkRequest);
ILifecycleOwner owner = ProcessLifecycleOwner.Get();
//Observe what happened to this request so we can notify the UI
WorkManager.Instance.GetWorkInfoByIdLiveData(oneTimeWorkRequest.Id).Observe(owner, new RandomWorkerObserver());
return(oneTimeWorkRequest.Id.ToString());
}
/// <summary>
/// Removes the lifecycle observer that is set by the BiometricPrompt from the lifecycleOwner.
/// See: https://stackoverflow.com/a/59637670/1489968
/// TODO: The new implementation of BiometricPrompt doesn't use this mechanism anymore. Recheck this code after Xamarin.AndroidX.Biometric has been updated.
/// </summary>
/// <param name="lifecycleOwner">Lifecycle owner where the observer was added.</param>
/// <param name="dialog">Used BiometricPrompt</param>
private static void TryReleaseLifecycleObserver(ILifecycleOwner lifecycleOwner, BiometricPrompt dialog)
{
var promptClass = Java.Lang.Class.FromType(dialog.GetType());
var lifecycleObserverField = promptClass.GetDeclaredField("mLifecycleObserver");
if (lifecycleObserverField is null)
{
return;
}
lifecycleObserverField.Accessible = true;
var lastLifecycleObserver = lifecycleObserverField.Get(dialog).JavaCast <ILifecycleObserver>();
var lifecycle = lifecycleOwner.Lifecycle;
if (lastLifecycleObserver is null || lifecycle is null)
{
return;
}
lifecycle.RemoveObserver(lastLifecycleObserver);
}
public GAPAuthenticatorAdapter(ILifecycleOwner lifecycleOwner, LocalAuthPageViewModel viewModel) : base(viewModel.Authenticators)
{
lifecycleOwner.Lifecycle.AddObserver(this);
}
public void Hello(ILifecycleOwner owner,
Lifecycle.Event evt)
{
Log.Debug(TAG, owner.ToString());
Log.Debug(TAG, evt.ToString());
}
void OnAnyEvent(ILifecycleOwner owner, Lifecycle.Event @event)
{
OnEvent(@event);
}
/// <summary>
/// 初始化并绑定摄像头
/// </summary>
/// <param name="lifecycleOwner"></param>
public void InitAndStartCamera(ILifecycleOwner lifecycleOwner, Action <bool, string> InitCallBack)
{
var cameraProviderFuture = ProcessCameraProvider.GetInstance(this.Context);
cameraExecutor = Executors.NewSingleThreadExecutor();
cameraProviderFuture.AddListener(new Java.Lang.Runnable(() =>
{
// Used to bind the lifecycle of cameras to the lifecycle owner
var cameraProvider = (ProcessCameraProvider)cameraProviderFuture.Get();
// Preview
var preview = new Preview.Builder()
.Build();
preview.SetSurfaceProvider(_CameraPreView.SurfaceProvider);
// Take Photo
this._ImageCapture = new ImageCapture.Builder()
.SetTargetResolution(new Size(CaptureImageSize_Width, CaptureImageSize_Height))
.Build();
// Frame by frame analyze(Not Use Now)
var imageAnalyzer = new ImageAnalysis.Builder().Build();
imageAnalysisFrameProcess = new ImageAnalysisFrameProcess();
imageAnalyzer.SetAnalyzer(cameraExecutor, imageAnalysisFrameProcess);
//imageAnalyzer.SetAnalyzer(cameraExecutor, new LuminosityAnalyzer(luma =>
// Log.Debug("", $"Average luminosity: {luma}")
// ));
#region Select back camera as a default, or front camera otherwise
CameraSelector cameraSelector = null;
//if (cameraProvider.HasCamera(CameraSelector.DefaultBackCamera) == true)
// cameraSelector = CameraSelector.DefaultBackCamera;
//else if (cameraProvider.HasCamera(CameraSelector.DefaultFrontCamera) == true)
// cameraSelector = CameraSelector.DefaultFrontCamera;
//else
// throw new System.Exception("Camera not found");
switch (CameraFacing)
{
case CameraFacing.Back:
if (cameraProvider.HasCamera(CameraSelector.DefaultBackCamera) == true)
{
cameraSelector = CameraSelector.DefaultBackCamera;
}
else
{
if (cameraProvider.HasCamera(CameraSelector.DefaultFrontCamera) == true)
{
cameraSelector = CameraSelector.DefaultFrontCamera;
}
else
{
InitCallBack?.Invoke(false, "Not found any camera device");
return;
}
}
break;
case CameraFacing.Front:
{
if (cameraProvider.HasCamera(CameraSelector.DefaultFrontCamera) == true)
{
cameraSelector = CameraSelector.DefaultFrontCamera;
}
else
{
if (cameraProvider.HasCamera(CameraSelector.DefaultBackCamera) == true)
{
cameraSelector = CameraSelector.DefaultBackCamera;
}
else
{
InitCallBack?.Invoke(false, "Not found any camera device");
return;
}
}
}
break;
}
#endregion
try
{
// Unbind use cases before rebinding
cameraProvider.UnbindAll();
// Bind use cases to camera
var camera = cameraProvider.BindToLifecycle(lifecycleOwner, cameraSelector, preview, _ImageCapture, imageAnalyzer);
_CameraController = camera.CameraControl;
_CameraInfo = camera.CameraInfo;
InitCallBack?.Invoke(true, "");
}
catch (Exception exc)
{
Toast.MakeText(this.Context, $"Use case binding failed: {exc.Message}", ToastLength.Short).Show();
}
}), AndroidX.Core.Content.ContextCompat.GetMainExecutor(this.Context));
}
/// <summary>
/// 切换摄像头的位置
/// </summary>
public void SwitchFacing(ILifecycleOwner lifecycleOwner, Action <bool, string> switchCallBack)
{
CameraFacing = CameraFacing == CameraFacing.Back ? CameraFacing.Front : CameraFacing.Back;
InitAndStartCamera(lifecycleOwner, switchCallBack);
}
