I am using custom camera in android.When i am capturing image with Flash_ON, the image is too dark almost black in Nexus 4 only.But it is fine on other devices.Please help me .
My code is given below :-
CameraInfo cameraInfo = new CameraInfo();
Camera.getCameraInfo(cameraId, cameraInfo);
Camera.Parameters parameters = camera.getParameters();
Size bestPreviewSize = determineBestPreviewSize(parameters);
Size bestPictureSize = determineBestPictureSize(parameters);
mSize = bestPreviewSize;
parameters.setPreviewSize(bestPreviewSize.width,.setPreviewSize(bestPreviewSize.width,
parameters.setPictureSize(bestPictureSize.width, bestPictureSize.height);
if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
} else {
parameters.setFlashMode(Parameters.FLASH_MODE_ON);
parameters.setSceneMode(Parameters.SCENE_MODE_AUTO);
parameters.setFocusMode(Parameters.FOCUS_MODE_AUTO);
}
camera.setParameters(parameters);
Just change the value of Parameter you need to set as follows
parameters.setFlashMode(Parameters.FLASH_MODE_TORCH);
Flash should turn off automatically. If it doesn't then turn off it manually in shutter callback
ShutterCallback shutterCallback = new ShutterCallback() {
#Override
public void onShutter() {
try {
Parameters params = camera.getParameters();
params.setFlashMode(Parameters.FLASH_MODE_OFF);
camera.setParameters(params);
} catch (Exception e) {
}
}
};
Related
My game snapshot Attachment> Blockquote
My canvas constructs
public class DrawingView4 extends View{
DrawingView4(Context context4)
{
super(context4);
}
#Override protected void onDraw(Canvas canvas4)
{
int tile4=0;
if (DoneDrawFacilities && doneloading) {
}
else {
for (int i4=0; i4< 17 && notfixingorientation; i4++){
if (i4< 16) {
for (int ii4=0; ii4 < 16; ii4++){
try {
//Checking the data of all spots of the game map from package directory.
//Then Draw in canvas if the data of the spot occupied by type of human and core facilities,
FacilityList = new Gson().fromJson(FileUtil.readFile(FileUtil.getPackageDataDir(getApplicationContext()).concat("/GameResource/Tile".concat(String.valueOf((long)(tile4 + 1)).concat(".data")))), new TypeToken<ArrayList<HashMap<String, Object>>>(){}.getType());
if (FacilityList.get((int)0).get("Type").toString().equals("Human")) {
canvas4.drawBitmap(BitmapFactory.decodeFile(AllObjects.getString(String.valueOf((long)(tile4)), "")),null,new Rect(ii4*120, i4*120, 120*(ii4+1),120*(i4+1)), null);
}
if (FacilityList.get((int)0).get("Type").toString().equals("Core")) {
if (FacilityList.get((int)0).get("Name").toString().equals("Arena")) {
canvas4.drawBitmap(BitmapFactory.decodeFile(AllObjects.getString(String.valueOf((long)(tile4)), "")),null,new Rect(7*120, 7*120, 120*(8+1),120*(8+1)), null);
}
else {
}
}
} catch (Exception e) {
}
FacilityList.clear();
tile4++;
}
}
else {
DoneDrawFacilities = true;
}
}
}
}}
Blockquote
My Relocate button
//I use sharepreference called AllObjects rather than a list and I Only update the path of objects in specific tile in sharedpreference such as in variable 1, 2, etc. and then re-draw using this code below, next time I update the objects path and get this object path from the same json file in the package directory. Too decode to Bitmap and then Draw in canvas.
//Some other code are removed that just updating some data in specific file directory.
AA_structures_facilities.removeAllViews();
AA_structures_facilities.addView(new DrawingView4(GameActivity.this));
// But It freezes the screen or stop me from touching the touch event in a second everytime I update new canvas.
//WHILE MY touchevent is hundled in the parent LinearLayout where the canvas is placed.
I am trying to make a slider between TouchImageView and PlayerView (Exoplayer) but I am unable to catch up with certain issues that are persisting even after several changes. All the suggestions and answers are welcome. Pardon my questioning skills and please let me know if more inputs are needed for your analysis. Kindly also let me know if there is any other alternative to successfully meet my expectations of properly implementing views smoothly in ViewPager.
Problem description:-
Issues related to click on view :-
When the image is clicked, the audio of next video (if any) starts playing in background.
The same issue is with PlayerView. When the video thumbnail is clicked, the audio of clicked video as well as next video plays together.
Issues related to slider :-
When an we slide and reach to an image preceding to a video, the audio starts playing in background. However, after sliding once toward video and sliding again in forward or backward direction from video for once, the audio stops. But this issue persists after viewing more than one images in forward or backward direction of video.
Attempts made by me to solve this issue :-
I tried to use playerView.addOnAttachStateChangeListener(new View.OnAttachStateChangeListener() {...}) method in PagerAdapter to handle player states while sliding between views. Unfortunately, I was unable to grasp to use different player states.
I also tried to use viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {...} method in StatusViewer class.
StatusViewer Java class (Setting PagerAdapter class object inViewPager) :-
modelFeedArrayList = (ArrayList<File>) getIntent().getSerializableExtra("modelFeedArrayList");
position = intent.getIntExtra("position", 0);
ImageSlideAdapter imageSlideAdapter = new ImageSlideAdapter(this,modelFeedArrayList,position);
viewPager.setAdapter(imageSlideAdapter);
viewPager.setCurrentItem(position);
viewPager.setOffscreenPageLimit(0);
viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
#Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
#Override
public void onPageSelected(int position) {
File currentFile = modelFeedArrayList.get(position);
String filePath = currentFile.toString();
if (filePath.endsWith(".jpg") || currentPage == position){
currentPage = position;
ImageSlideAdapter.player.pause();
}
else {
currentPage = position;
ImageSlideAdapter.player.play();
}
}
#Override
public void onPageScrollStateChanged(int state) {
}
});
ImageSliderAdapter (PagerAdapter) (code mentioned below is inside instantiateItem):-
File currentFile = modelFeedArrayList.get(position);
String filePath = currentFile.toString();
if (currentFile.getAbsolutePath().endsWith(".mp4")) {
statusImageView.setVisibility(View.GONE);
playerView.setVisibility(View.VISIBLE);
player = new ExoPlayer.Builder(context).build();
MediaItem mediaItem = MediaItem.fromUri(filePath);
player.addMediaItem(mediaItem);
playerView.setPlayer(player);
player.prepare();
playerView.setBackgroundColor(context.getResources().getColor(android.R.color.black));
playerView.addOnAttachStateChangeListener(new View.OnAttachStateChangeListener() {
#Override
public void onViewAttachedToWindow(View v) {
Log.d("Filepath", filePath);
Log.d("Position", "" + position);
}
#Override
public void onViewDetachedFromWindow(View v) {
if (filePath.endsWith(".jpg") || currentPage == position || modelFeedArrayList.get(currentPage).getAbsolutePath().endsWith(".jpg")){
currentPage = position;
player.pause();
Objects.requireNonNull(playerView.getPlayer()).pause();
}
else {
player.release();
Objects.requireNonNull(playerView.getPlayer()).release();
}
}
});
} else {
playerView.setVisibility(View.GONE);
statusImageView.setVisibility(View.VISIBLE);
Glide.with(context).load(modelFeedArrayList.get(position)).into(statusImageView);
statusImageView.setBackgroundColor(context.getResources().getColor(android.R.color.black));
}
Objects.requireNonNull(container).addView(itemView);
return itemView;
}
#Override
public void destroyItem(#NonNull #NotNull ViewGroup container, int position, #NonNull #NotNull Object object) {
container.removeView((ConstraintLayout) object);
}
Thank you StackOverflow community for viewing this question. I resolved the above issue by below mentioned modifications :-
Changes in ImageSliderAdapter (PagerAdapter) :-
-> Below mentioned code was added in onViewAttachedToWindow(View v) :-
if (filePath.endsWith(".jpg") || currentPage == position || modelFeedArrayList.get(currentPage).getAbsolutePath().endsWith(".jpg")){
currentPage = position;
player.pause();
Objects.requireNonNull(playerView.getPlayer()).pause();
}
else {
player.pause();
Objects.requireNonNull(playerView.getPlayer()).pause();
if (filePath.endsWith(".mp4")){
player.pause();
Objects.requireNonNull(playerView.getPlayer()).pause();
}
else {
player.play();
Objects.requireNonNull(playerView.getPlayer()).play();
}
}
-> Below mentioned code was added in onViewDetachedFromWindow(View v) :-
if (filePath.endsWith(".mp4")){
player.release();
Objects.requireNonNull(playerView.getPlayer()).release();
}
-> player.play() was added after player.prepare().
Changes in StatusViewer Java class :-
-> The below changes cured the issue of player malfunctioning and player's play state and release state. I used the smoothScroll: false in setCurrentItem.
viewPager.setCurrentItem(position,false);
Old question: Codename One app not provide real location
We still have problem getting current location.
Sometimes it's ok, "Localizzazione..." dialog shows, then location ok callback dispose the dialog.
Sometimes the dialog is never disposed and I don't see GPS in the top bar, which is visible when location is ok and dispose the dialog.
Slider s1 = new Slider();
Display.getInstance().callSerially(() -> {
blocco_loc_in_corso = makeDialog("Localizzazione...", s1, null, 'a');
blocco_loc_in_corso.show();
});
LocationManager locationManager = LocationManager.getLocationManager();
locationManager.setLocationListener(new LocationListener() {
#Override
public void locationUpdated(Location location) {
if(location != null) {
Display.getInstance().callSerially(() -> {
if(blocco_loc_in_corso != null) {
blocco_loc_in_corso.dispose();
}
});
paintLocation(location, true);
}
}
#Override
public void providerStateChanged(int newState) {
}
}, new LocationRequest(LocationRequest.PRIORITY_HIGH_ACCUARCY, 1000));
I have this problem for at least 6 months. We only need to block user until we have his GPS location which may can change (GPS updates callback).
Edited:
public Dialog makeDialog(String label, Component c, String buttonText, char btIcon) {
Dialog dlg_r = new Dialog();
Style dlgStyle = dlg_r.getDialogStyle();
dlgStyle.setBorder(Border.createEmpty());
dlgStyle.setBgTransparency(255);
dlgStyle.setBgColor(0xffffff);
Label title = dlg_r.getTitleComponent();
title.getUnselectedStyle().setFgColor(0xff);
title.getUnselectedStyle().setAlignment(Component.LEFT);
dlg_r.setLayout(BoxLayout.y());
Label blueLabel = new Label(label);
blueLabel.setShowEvenIfBlank(true);
blueLabel.getUnselectedStyle().setBgColor(0xff);
blueLabel.getStyle().setFgColor(0x0a0afc);
blueLabel.getStyle().setAlignment(Component.CENTER);
blueLabel.getUnselectedStyle().setPadding(1, 1, 1, 1);
blueLabel.getUnselectedStyle().setPaddingUnit(Style.UNIT_TYPE_PIXELS);
dlg_r.add(blueLabel);
dlg_r.add(c);
if (buttonText != null) {
Button dismiss = new Button(buttonText);
dismiss.getAllStyles().setBorder(Border.createEmpty());
dismiss.getAllStyles().setFgColor(0);
dismiss.getAllStyles().set3DText(true, true);
dismiss.setIcon(FontImage.createMaterial(btIcon, dismiss.getStyle()));
dismiss.addActionListener(((evt) -> {
dlg_r.dispose();
}));
dlg_r.add(dismiss);
}
return dlg_r;
}
To make sure this code is threadsafe make the following change:
public void locationUpdated(Location location) {
locationFound = true;
// ...
}
Then in the make dialog method:
dlg_r.addShowListener(e -> {
if(locationFound) {
dlg_r.dispose();
}
});
Since this event can happen in the dead time of showing the dialog transition.
I really want to know how do I can update the position of the user in the map while the UWP app was running in bakground
Here is my code right now
private async void PinPoints()
{
//Pin point to the map
Windows.Devices.Geolocation.Geopoint position = await Library.Position();
double lat = position.Position.Latitude;
double lon = position.Position.Longitude;
//Geoposition alttest = await Library.Temp();
//alt = alttest.Coordinate.Altitude;
DependencyObject marker = Library.Marker(""
//+ Environment.NewLine + "Altitude " + alt
);
Display.Children.Add(marker);
Windows.UI.Xaml.Controls.Maps.MapControl.SetLocation(marker, position);
Windows.UI.Xaml.Controls.Maps.MapControl.SetNormalizedAnchorPoint(marker, new Point(0.5, 0.5));
Display.LandmarksVisible = true;
Display.ZoomLevel = 16;
Display.Center = position;
}
This function will pinpoint the current location for me but it will do only when user open this page due to I've put it in the public Map() {}
Current : Get the location when open map page and when I walk the map still be the same place
What I want : The position keep changing while I move on and also run on background (If application is close location data still changed)
Is there any code to solve this location problem if I have to add code where should I fix and what should I do?
Additional now I perform the background (Not sure is it work or not) by create the Window Runtime Component (Universal) with class like this
*I already put this project as the reference of the main one
namespace BackgroundRunning
{
public sealed class TaskBG : IBackgroundTask
{
BackgroundTaskDeferral _deferral = null;
Accelerometer _accelerometer = null;
Geolocator _locator = new Geolocator();
public void Run(IBackgroundTaskInstance taskInstance)
{
_deferral = taskInstance.GetDeferral();
try
{
// force gps quality readings
_locator.DesiredAccuracy = PositionAccuracy.High;
taskInstance.Canceled += taskInstance_Canceled;
_accelerometer = Windows.Devices.Sensors.Accelerometer.GetDefault();
_accelerometer.ReportInterval = _accelerometer.MinimumReportInterval > 5000 ? _accelerometer.MinimumReportInterval : 5000;
_accelerometer.ReadingChanged += accelerometer_ReadingChanged;
}
catch (Exception ex)
{
// Add your chosen analytics here
System.Diagnostics.Debug.WriteLine(ex);
}
}
void taskInstance_Canceled(IBackgroundTaskInstance sender, BackgroundTaskCancellationReason reason)
{
_deferral.Complete();
}
async void accelerometer_ReadingChanged(Windows.Devices.Sensors.Accelerometer sender, Windows.Devices.Sensors.AccelerometerReadingChangedEventArgs args)
{
try
{
if (_locator.LocationStatus != PositionStatus.Disabled)
{
try
{
Geoposition pos = await _locator.GetGeopositionAsync();
}
catch (Exception ex)
{
if (ex.HResult != unchecked((int)0x800705b4))
{
System.Diagnostics.Debug.WriteLine(ex);
}
}
}
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex);
}
}
public void Dispose()
{
if (_accelerometer != null)
{
_accelerometer.ReadingChanged -= accelerometer_ReadingChanged;
_accelerometer.ReportInterval = 0;
}
}
}
}
Your Solution :
Make 3 projects in your solution.
1> Background Task "references App_Code"
2> App_Code "contains calculations,mostly Backend Code"
3> Map(Main Project) "references App_Code"
Register a background Task to your project and specify the time interval after which it should run again
Scenario 1> App Open,User Requests Update
Trigger Your background Task from code behind.
Scenario 2> App Closed,Not Being Used
Run your background task!
So basically keep your backgroundTask simple(make it a class in whose run method you just call the proper App_Code Classes Method) and all calculations that you want to happen in the background keep them in App_Code. Also, if I am no wrong the minimum interval between which a background Task is triggered by itself cannot be set below 15 minutes.
For real-time you could look at SignalR ( can't help any further here)
I need to make instrument, that allows users to choose photo from Gallery. After choosing photo, it will be shown to the user in ImageBox.
Problem is, that when user chooses some photo in Gallery, Gallery closes, ImageBox stays empty. Code returns no error. Please help me to find error and solve this problem. Thank you.
Here is a code:
ImagePath = String.Empty
filePicker.SuggestedStartLocation = PickerLocationId.PicturesLibrary
filePicker.ViewMode = PickerViewMode.Thumbnail
' Filter to include a sample subset of file types
filePicker.FileTypeFilter.Clear()
filePicker.FileTypeFilter.Add(".bmp")
filePicker.FileTypeFilter.Add(".png")
filePicker.FileTypeFilter.Add(".jpeg")
filePicker.FileTypeFilter.Add(".jpg")
filePicker.PickSingleFileAndContinue()
Dim BitmapImage = New BitmapImage()
Await BitmapImage.SetSourceAsync(filePicker)
MyPhoto.Source = BitmapImage
If you are using filePicker.PickSingleFileAndContinue() you need to add code into the App_Activated
You will notice that PickSingleFileAndContinue() is a void method will not return the picked file were as PickSingleFileAsync() will return a file.
Code block is in C#,sorry i have only limited knowledge in vb, you can find vb sample below
Similar SO Answer
C#
FileOpenPicker openPicker = new FileOpenPicker();
openPicker.ViewMode = PickerViewMode.Thumbnail;
openPicker.SuggestedStartLocation = PickerLocationId.PicturesLibrary;
openPicker.FileTypeFilter.Add(".jpg");
openPicker.FileTypeFilter.Add(".jpeg");
openPicker.FileTypeFilter.Add(".png");
StorageFile file = await openPicker.PickSingleFileAsync();
As your are using PickSingleFileAndContinue() you need to implement ContinuationManager that were you get the file you picked.
In the App.xaml.cs
public ContinuationManager ContinuationManager { get; private set; }
This will fire when the app get activated
protected async override void OnActivated(IActivatedEventArgs e)
{
base.OnActivated(e);
continuationManager = new ContinuationManager();
Frame rootFrame = CreateRootFrame();
await RestoreStatusAsync(e.PreviousExecutionState);
if(rootFrame.Content == null)
{
rootFrame.Navigate(typeof(MainPage));
}
var continuationEventArgs = e as IContinuationActivatedEventArgs;
if (continuationEventArgs != null)
{
Frame scenarioFrame = MainPage.Current.FindName("ScenarioFrame") as Frame;
if (scenarioFrame != null)
{
// Call ContinuationManager to handle continuation activation
continuationManager.Continue(continuationEventArgs, scenarioFrame);
}
}
Window.Current.Activate();
}
Usage in the page
Assume that one page of your app contains code that calls a FileOpenPicker to pick an existing file. In this class, implement the corresponding interface from the ContinuationManager helper class. When your app uses a FileOpenPicker, the interface to implement is IFileOpenPickerContinuable.
public sealed partial class Scenario1 : Page, IFileOpenPickerContinuable
{
...
//inside this you have this
private void PickAFileButton_Click(object sender, RoutedEventArgs e)
{
...
FileOpenPicker openPicker = new FileOpenPicker();
openPicker.ViewMode = PickerViewMode.Thumbnail;
openPicker.SuggestedStartLocation = PickerLocationId.PicturesLibrary;
openPicker.FileTypeFilter.Add(".jpg");
openPicker.FileTypeFilter.Add(".jpeg");
openPicker.FileTypeFilter.Add(".png");
// Launch file open picker and caller app is suspended
// and may be terminated if required
openPicker.PickSingleFileAndContinue();
}
}
switch (args.Kind)
{
case ActivationKind.PickFileContinuation:
var fileOpenPickerPage = rootFrame.Content as IFileOpenPickerContinuable;
if (fileOpenPickerPage != null)
{
fileOpenPickerPage.ContinueFileOpenPicker(args as FileOpenPickerContinuationEventArgs);
}
break;
...
}
Download msdn sample here
Msdn documentation using FilePicker