flashlight

I'm working on a flashlight app using the camera flash. It seems to work fine but on occasion calling camera.release() causes a hang for about a minute or so. I've included the code below. I've looked at a bunch of examples and I don't see anything that could cause such a thing. Any ideas? //latest public void setOn(boolean on, Context context) { if (lock) { Log.i(TAG, "lock: true"); return; } if (on) { if (mCamera == null) { mCamera = Camera.open(); } Parameters params = mCamera.getParameters(); params.setFlashMode(MODE_TORCH); mCamera.setParameters(params); mCamera.startPreview(); } else {

I'm trying to implement a 1 second red blinking at the front led whenever the user presses a certain button. But I'm having trouble finding documentation, tutorials or even code-examples on how to access and work with the front led (by that I mean the led located adjacent to the "selfie" camera and the touch screen). I've seen examples to work with the flashlight and Camera class (deprecated) but I believe that's not what I'm looking for. There is no direct access to the front L.E.D. You can schedule Notifications with custom colours for the L.E.D. Notification.Builder builder = new

I am writing an app that sets the flash mode to torch. I have been testing the application on my Droid X, and the LED light does not come on. I tried it on a Droid Incredible and it worked fine. I can't figure out what the problem is. Here is part of my code for turning on torch mode. Camera mCamera = Camera.open(); Camera.Parameters params = mCamera.getParameters(); if(params.getFlashMode() != null){ params.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH); } mCamera.setParameters(params); I have added mCamera.startPreview(); because I read that should make a difference, but it doesn't. I also

after reading all the posts of the other users with the same problem I was able to create a simple working app for turning on flash light on my Nexus 5, this is the "OnCreate()" method: @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Camera mCamera; SurfaceView preview; mCamera = Camera.open(); Parameters params = mCamera.getParameters(); params.setFlashMode(Parameters.FLASH_MODE_TORCH); mCamera.setParameters(params); mCamera.startPreview(); try { mCamera.setPreviewTexture(new SurfaceTexture(0)); } catch

Will the code as below work on android devices like Motorola razor who doesn't support torch? Can someone please be kind enough to test if has any phone like that and please tell me. Thanks in advance!! if (!isFlashOn) { if (camera == null || params == null) { return; } List<String> flashModes = params.getSupportedFlashModes(); if(flashModes.contains(Parameters.FLASH_MODE_TORCH)){ try { params = camera.getParameters(); params.setFlashMode(Parameters.FLASH_MODE_TORCH); camera.setParameters(params); camera.startPreview(); toggleButtonImage(); isFlashOn = true; }catch (RuntimeException e) { } }

I have a problem regarding the camera in the most recent Marshmallow build, more specifically the flashlight. On any pre-Marshmallow version all I need to do to turn the flash on/off was the following: private void turnFlashOn(final Camera camera, int flashLightDurationMs) { if (!isFlashOn()) { final List<String> supportedFlashModes = camera.getParameters().getSupportedFlashModes(); if (supportedFlashModes != null && supportedFlashModes.contains(Camera.Parameters.FLASH_MODE_TORCH)) { mParams.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH); camera.setParameters(mParams); } } } and private void

I am working on Flashlight app with Widget. When I turn on Flashlight with Widget flashlight is on, and when I start some app, the flashlight turns off. Why is this happening? Why can't my Flashlight run in background? How can I prevent this? I want Flashlight to be turned off only by user not the system. This is my code for widget: @Override public void onReceive(Context context, Intent intent) { RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget_layout); myPref = PreferenceManager.getDefaultSharedPreferences(context); if (AppGlobals.getIsFlashOn()) { views

Can I use camera preview and flashlight at the same time in Android Camera2 API? When I try use CameraManager.setTorchMode(String cameraId, boolean enabled) it's work fine when camera is not opened. But when Camera is open and I try setTorchMode I receive this exception: CameraService: setTorchMode: torch mode of camera 0 is not available because camera is in use The error is indicating that the camera in question, is already in use. You need to set the FLASH_MODE and CONTROL_AE_MODE accordingly. mPreviewRequestBuilder.set(CaptureRequest.FLASH_MODE, CaptureRequest.FLASH_MODE_OFF);

it's my first question here as I have a problem developing my first iOS app. It is one of the thousands of flashlight apps, however I'm trying to put as many features as possible to it. One of them is saving the state of the app when it goes to background or terminates. After going to foreground (iOS 4 or higher) or relaunching, I'm loading the settings from file and reapplying them. One of the settings is, obviously, the AVCaptureDevice.torchMode . However, I encounter the problem with this. I'm reapplying these settings in the applicationDidBecomeActive method. It all seems to work, but when