Share video via bluetooth doesn't work using intent? unable to send video via bluetooth using this code, how i can fix it? Uri uri = Uri.parse(video_models.get(position).getPath()); Intent intent = new Intent(Intent.ACTION_SEND_MULTIPLE); intent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(new File(String.valueOf(uri)))); intent.setFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION); intent.setType("video/*"); context.startActivity(intent);

Firebase Android studio Kotlin: Image not showing from Firebase when I use another device When I use my Original Device where I'll upload Text and Images to the Firebase and When I View it I can See the Images, but when I use Different Device I can see the Text but not the uploaded Image instead I can seethe Iclauncher, but the Image is still on Realtime Database as well as on Storage. I think my problem is if I use another device the Images from Firebase is not Loading or Downloading and I don't know what to do This Is My Code DetailsActivity.kt class DetailsActivity :...

Switching between multiple Fragments hosted by an Activity using callbacks I have an Activity that can switch between two fragments by implementing their Callbacks interface, like this: class MainActivity : AppCompatActivity(), ListFragment.Callbacks, MyFragment.Callbacks { override fun onMyFragmentSelected() { val fragment = MyFragment() supportFragmentManager.beginTransaction() .replace(R.id.fragment_container,fragment) .addToBackStack(null) .commit() } override fun onListFragmentSelected() { val...

How to automatically add the keyword "this" in front of each instance variable/method? With Java, I can turn on the following inspections: "Instance method call not qualified with 'this'" "Instance fields access not qualified with 'this'" Or I can use the "Save Actions" plugin. But how can I achieve this with Kotlin ?

How to read functions from a string using regex fro commands I want to give commands using function like structure in string. For example I have three functions: go() do() hello() but also these function have bodies that also could contain the same functions. "go(){do(){go}} do()" These functions can also use parameters. How can I do this in regex. It is like creating a programming language.

Android(Kotlin) Material Design Date Range Picker How to set Minimum and Maximum dates properly? I have a Date Range Picker(Material Design) and I want to disable previous dates(so minimum date will be , and set to maximum date to 6 months later. I tried something like this: val calendar = Calendar.getInstance() val constraintsBuilderRange = CalendarConstraints.Builder() val dateValidatorMin: CalendarConstraints.DateValidator = DateValidatorPointForward.from(calendar.timeInMillis) val dateValidatorMax: CalendarConstraints.DateValidator =...

Custom Notification View Doesn't Show Images I'm trying show an icon and a text on my notification bar. So I created a new layout for that, however only the text shows up and the icon doesn't. This is how I create the notification: val notification = NotificationCompat.Builder(this, notificationChannelId) .setOngoing(true) .setContentTitle(getString(R.string.app_name)) .setCustomBigContentView(RemoteViews(packageName, R.layout.notification_view)) .setSmallIcon(R.drawable.ic_launcher)...

Is it possible to use websockets to send a request and get a response right after (without the publisher/subscriber structure)? I am using spring-websocket together with Kotlin Multiplatform, SockJS and StompJS. I've got my application up and running, mainly using this tutorial from Spring. The frontend is able to send messages to the backend (via the @MessageMapping annotation), which responds back to frontend (via the @SendTo annotation). The frontend code currently looks like this: val socket =...

Update Navigation Drawer at runtime Is there any way how to update items in navigation drawer (jetpack compose) at runtime? For example, I have Room database and for every record I want add a new item in navigation drawer. User will have an option to create a new record, after that I need to show updates in database immediately in navigation.

Android Compose Bluetooth not scanning I'm trying to make a Compose app that will connect to an ESP32 and send serial data. I have a Layout with just 3 buttons (turn BT on / off and scan). So the layout is not important here, for some reason the device will not scan for BT devices, then thought it has the right to do so. class MainActivity : ComponentActivity() { private lateinit var bluetoothManager: BluetoothManager private lateinit var bluetoothAdapter: BluetoothAdapter private val activityResultLauncher =...

Kotlin: every element from loop should fill all the free space that is available in the Row I have elements that i loop through and clicked element changes background to green. I want every element to fill all the free space that is available in the Row. But if i provide weight(1f) it shows only one element that takes all the space, but there should be three elements or whatever count of elements i have passed from outside. @Composable fun BottomMenu( items: List, modifier: Modifier = Modifier,...

Unresolved reference: textField I get this message "Unresolved reference: textField" on the start of the third line on this block of code: val items = listOf("Material", "Design", "Components", "Android") val adapter = ArrayAdapter(requireContext(), R.layout.list_item, items) (textField.editText as? AutoCompleteTextView)?.setAdapter(adapter) I just copied and pasted the code directly from the material design <a href="https://material.io/components/menus/android#exposed-dropdown-menus" rel="nofollow...

Kompare Dates in Kotlin How can i compare Dates in Kotlin? I have the Date of an Event as a String (Format:dd/mm/yy) and I want to check if it is within the next 7 Days of the current Date. The time in this case is not relevant or if needet I would use midnight. Can someone please help me with this? In my current code i got both Dates by this: val date = document.data["Date"].toString() //Example: 22/08/22 (dd/MM/yy) val today = SimpleDateFormat("dd/MM/yy").format(Date()).toString() this is within a Android...

Loading images from folder take to much time I have a lot of pictures on a path , and i move picture to this path , loading pictures and displaying them on recyclerView take a lot of time , and i am using a fragment , when i change fragment and back to the one that display pictures , it take again a lot of time to load pictures . any suggestion to load pictures fast ? suspend fun getImages() = try { val path = Environment.getExternalStorageDirectory() .toString() + "Here folder path " val directory =...

kotlin fun with string concatenation I need help concatenating a string in a kotlin viewmodel. I am trying to return what the code should print to the status text view. The formula determines from a Int what the status should be then outputs a message to the User. I am unsure as to what method should be used to create a string that I wanted to return. fun formula(f: Int, b: Int, l: Int, d: Int) : String { if (f > 70 && f < 99) { val ftxt = "Normal" } else if (f < 71) { val ftxt =...

In Kotlin how to call xml id in a Holder via fragment activity This might be a long post so I apologize I am having problems with a holder class GlucoseHolder( private val binding: GlucoseListBinding ) : RecyclerView.ViewHolder(binding.root) { fun bind(glucose: Glucose) { binding.date_saved.text = glucose.date.toString() }//not seeing date_saved } class GlucoseListAdapter( private val glucoses: List ) : RecyclerView.Adapter() { override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): GlucoseHolder { val...

Unable to play Multiple Audio files using Latest Exoplayer(2.18.1) in Kotlin want to implement the Simple App that can play multiple asset audio files together. same as soft sound but with the latest build gradle of exoplayer i.e, 2.18.1 it has only two kt classes MainActivity.kt, <a...

Does Kotlin have a line directive for generated code? Languages like C, C# and Go have a #line directive that tells the compiler 'this code was actually machine generated from some original source file, error messages should use this line number from that original source file'. Java does not have this feature. (You can get it if you generate JVM byte code directly, but that's a different thing.) Does Kotlin have any equivalent? I have not been able to find either a reference to such, or a definite statement that it does not exist.

Hilt jCannot create an instance of class com.therealbluepandabear.pixapencil.screens.new.NewScreenViewModel (have tried everything) I am creating an app with Hilt which stores some data using Room. My ViewModel: @HiltViewModel class NewScreenViewModel @Inject constructor(private val repository: QuickPresetsRepository) : ViewModel() { private val _state = mutableStateOf( NewScreenState( quickPresets = emptyList() ) ) private val textValidator = TextValidator() val state: State get() = _state init { getQuickPresets() } private fun getQuickPresets()...

Keep screen awake on Android Wear with covered screen I'm developing a Wear OS app with Kotlin for timing during sporting activities. I'm aware of the all the battery usage ramifications but as the timer will only be used for a short period and the user will be able turn off the feature in the settings I am going ahead with this. I've used the below which works perfectly for when the users arms go into a resting position but if the screen gets covered by a sleeve, it locks as if you cover to lock. How do i override this action? override fun...

How to get the only phone number from the device contact, not whats app and duo number, etc How to get the only phone number from the device contact, not whats app and duo number, etc... Example: I got the device contact number, but that return Phone Number What's App Number Google Duo Number etc... Note: I need only a phone number from the local device contact. val phones: Cursor? = contentResolver.query( ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?", arrayOf(contactId),...

Something very wrong in Instant from timestamp I'm trying to get an instant of a number of days ago, but it doesn't give expected result... val compare = System.currentTimeMillis() - 1000*60*60*24*days; val compareInstant = Instant.ofEpochMilli(compare) if( charger.timeRetrieved.isAfter(compareInstant) ) { ... The result is not the correct number of days ago... am I miscalculating this?

Error(msg=java.lang.IllegalStateException: Expected BEGIN_OBJECT but was BEGIN_ARRAY at line 1 column 2 path $) I have try to parse my json response using retrofit response but it show me the error expected begin object but was being array my json code look is shown bellow { "error": false, "message": "Login successfull", "status": "customer", "user": { "DISTRICT": [ { "Id": "1", "Name": "Abbottabad" }, { "Id": "3", "Name": "Bannu" }, { "Id": "4", "Name": "DI Khan" }, {...

How to correctly resize detected face bound box match the camera preview I'm using ML kit face detection in my android application. I'm have implemented this with Camera 2 libaray. The functionality works fire and I'm getting a bound box for the face detected in the camera preview. But when I compare it with ML kit sample application. I think there is mistake in my bound box resize calculation. private fun drawAdjustedFaceBoundBox(canvas: Canvas){ val...

How i can get on screen time for current day in andriod studio using kotlin i am using thing approach . fun showtime() { val end =System.currentTimeMillis() val start:LocalDateTime=LocalDate.now.atStartOfDay() val usageStatsManager = getSystemService(Context.USAGE_STATS_SERVICE) as UsageStatsManager val stats = usageStatsManager.queryAndAggregateUsageStats(start, end) val total = Duration.ofMillis(stats.values.map { it.totalTimeInForeground }.sum()) tvUsageStats.setText("YOU SPENT ${total} Hours.") }

mocking LocalDateTime.now() gloabally in integration test How can i mock static method now() from class LocalDateTime? What i mean is my mapper creates an object with LocalDateTime.now() field, then i want to integrate test this mapper and check whether object from mapper is equal to hardcoaded expected as result object. When i do simple: val clock: Clock = Clock.fixed(Instant.parse("2030-12-22T100000.00Z"), ZoneId.of("UTC")) val dateTime: LocalDateTime = LocalDateTime.now(clock) mockStatic(LocalDateTime::class.java,...

How to use Flow retry function on a specific event? I see that Flow has a retry mechanism, but my use case is somehow different from what I see in the doc, I have a fragment containing a list that fills from API when opening this fragment, but the API calls may be failed and throw an exception for any reason, in this case, I want to show a button that calls the API again on clicking, as follows:...

How to save the state of a toggle button after restarting app in jetpack compose? I'm trying to save the state of my button after restarting the app. Everything works, the heart button turns red after clicking on it, but when I restart the app, it goes back to its default state. I would like to store it in my firebase firestore. My Favorite button : fun FavoriteButton(shoe : ShoeModel){ val myviewModel : FirebaseFirestoreVM = viewModel(LocalContext.current as ViewModelStoreOwner, key = shoe.shoeName) val isFavorite = myviewModel.isFavorite...

Kotlin Jetpack Compose - MutableStateFlow detect nested changes I have a variable of type MutableStateFlow and I'd like to update the UI when the property of an Equipment object inside the list changes. I have tried to Make a copy of the list and assign it with value Make a copy of the element I'm changing in the list Use the update method None of them works and the UI is not updated.

Custom date picker Android - Kotlin I'm trying to create a custom calendar in Android. I want to create somethning like this . As you can see the design is slightly different than normal date picker for android. I tried to change it in xml, but like I found out, it isnt possible. So my question is - how to do that? Should I create custom class which extend from DatePicker? I was trying to find the solution by myself, but I found only...