How to get the size of the file stored in firebase storage and its link in firebase storage? here is my code to get the file size but I am unable to get it.:- ImageURL is stored in realtime database Picasso.get().load(ImageURL).placeholder(R.drawable.ic_baseline_image_200) .into(selected_title_image) val storageReference = FirebaseStorage.getInstance().getReferenceFromUrl(ImageURL) ImageSize = storageReference.getBytes() ImageSize /= 1024 Toast.makeText(baseContext, ImageSize.toString(), Toast.LENGTH_SHORT).show() I use the reference of...

Export Room Database File and Send it to server using retrofit kotlin I want to export my database file and tehn send it to server using retrofit. Challenges: Cannot find the request body type for db file in retrofit to send.

onSlide is not called in Android Oreo when BottoSheet is initialized I'm having some issues on Devices with Android Oreo in my app i have a RecyclerView and a BottomSheet, when the BottomSheet is in STATE_EXPANDED or it's sliding i'm setting the RecyclerView bottom margins to fit the RecyclerView in remaining space. In other Android versions > Oreo there are no problems onSlide is called and the bottom margin is set. BottomSheetCallback bottomSheetTasti.addBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() { @Override public void...

How I can Remove the margin between two item in ViewPager2 XML I'm trying to remove the margin between viewPager2 items when I scroll the page. > I' trying to make simple application like tiktok but this an issue I'm facing while scrolling my videos.

android save data from background service i have a background service which is working in background and looking for new SMS and creating notification and showing SMS public class SmsBoradcast extends BroadcastReceiver { private static final String SMS = "android.provider.Telephony.SMS_RECEIVED"; @Override public void onReceive(Context context, Intent intent) { if(intent.getAction().equals(SMS)){ Bundle bundle = intent.getExtras(); if (bundle != null) { Object[] pdus =...

¿como comparar Doubles dentro de un MutableList en Kotlin? Tengo esto pero al ejecutarlo solo me compara el primer numero y se olvida de los decimales. dataList.sortWith(compareBy { notas -> getMiNota(notas.notas!!).toDouble() })

Issues with dummy data Date I have my dummy data for testing with a type of Date (java.util) but no matter what i put i always have a missmatch val dummyData = arrayListOf( Data("JUst a string", 2018-12-14, 100.0, 1.0), ) Missmatch: 2018-12-14 What should I put then?

How to display Image taken using Camerax API (Android) How to display the Image taken using CameraX in Android. My case : I have two fragments. In one of the fragments I have implemented the CameraX functionality to take the photo and save it locally. And now I want to pass this image to an another fragment and display it there in an ImageView. What should be the best approach for that ( and if you could provide a working code that would be helpful ) Approaches that I think of to solve this: 1st approach : Send the Uri Id that is extracted from...

Preview in android kotlin When I enter the program, a black screen is displayed for a few seconds and then it enters the program With the search I made, I used the following code and the black screen is not displayed, but when I try to enter the program, the whole phone freezes for a few seconds and then enters the program. I could not find a solution to this problem true

LiveData observer is not being called when changing value My observer is not being called when I change LiveData value. I have a ViewModel, a custom View and a Fragment. In ViewModel I set the LiveData, in the custom View is where I change the value of this LiveData and in Fragment is where I observe the LiveData. Using breakpoints, I see that my custom View is working fine and changing the LiveData value correctly but in Fragment, the observer only is called when the Fragment is created. ViewModel: class MyViewModel : ViewModel { private val...

is there a way to pass value from data class to another class in Kotlin? Sorry, I'm new to Java/Kotlin mobile apps... Below code snippet from RegisterFragment.kt which is the main class:- override fun onViewCreated(view: View, savedInstanceState: Bundle?) { super.onViewCreated(view, savedInstanceState) val username = binding.text PackageSdk.getInstance().hasDuplicateUserKey(username, object : PackageResponseCallback { override fun onSuccess(result: ResultResponse) { Log.i(TAG, "Result code : " +...

Kotlin equivalent to Swift Literal Expression In Swift I use the following code to log a message and I receive all the relevant data I need: class func log(type: LogType, message: String, fileName: String = #file, line: Int = #line, column: Int = #column, function: String = #function) How can I do something similar in Android Java or Kotlin (preferable)? Thanks in advanced

function not working inside onRequestPermissionsResult why override fun onRequestPermissionsResult( requestCode: Int, permissions: Array, grantResults: IntArray ) { // super.onRequestPermissionsResult(requestCode, permissions, grantResults) Log.wtf("here grand result" , requestCode.toString(),) Log.wtf("here grand result" , grantResults.toString(),) if(requestCode == PERMISSION_REQUEST_ACCESS_LOCATION){ if(grantResults.isNotEmpty() && grantResults[0] == PackageManager.PERMISSION_GRANTED){...

Stream two collections and collect a map based on common property I have looked around a bit but have not found a elegant solution. What I am trying to do is have a nice streamlined (pun intended) solution to create a map from two collections who have 1 shared property (an id of sorts). The map should be key-value of the matching objects. How I have done it for now is a forEach on collection1 and within a foreEach on collection 2 to get the matching model and then do an operation on it. I would like to create the map and then separately just do the...

How to adding a delay before the Countdowntimer starts? I'm trying to add a 2 second delay without locking the main thread every time a resume is called in the countdown timer. Without adding a delay, this below works perfectly, but when I add a delay, the main thread hangs. Every time I call resume and add delay with sendmessage delay, the thread hang. How can I add a 2 second delay just every time a resume is called without breaking the main timer ? abstract class CountDownTimer( /** * Real time remaining until timer completes...

Jetpack Compose: Best way to display a start screen only the first time you start the app Im currently working on an app that has a start screen where I want to input an unique code to add a device through firebase. After adding the first device the menu screen should appear after starting the app. I currently do that with two Activitys and a Shared Preference that checks if I have at least one device and redirects me from the StartActivity to the MenuActivity. Although that works fine, I dont think it is a good solution. Is there any other way to have a Start Screen that only...

How to write data to file in Kotlin A little while ago, i started learning Kotlin, and i have done it's basics, variables, classes, lists and arrays etc. but the book i was learning from seemed to miss one important aspect, reading and writing to a file, maybe a function like "fwrite" in C++ So i searched google, and yes, reading and writing bytes was easy enough. However, me being used to C++'s open personality, wanted to make a "kind of" database. In C++ i would simply make a struct and keep appending it to a file, and then...

Chaincall for each element in list Is exist elegant way to call function on every element in list to tie with next till the end? For example I have: val list = listOf(1,5,3,4) fun Int.foo(next: Int) = //some logic I want to generate this expression: val result = 1.foo(5).foo(3).foo(4)

How to set diplayName of a firebase User while using Phone Authentication I am creating an android massaging app where I am implementing Firebase Phone Authentication. When I am creating PhoneAuthOptions, I am not seeing any method to set User's displayName, and after the verification completion I need User's name to save it with phone number into Database. While setting up phoneNumber of the User, is there any I can set displayName of the User? val options=PhoneAuthOptions.newBuilder(mAuth) .setPhoneNumber(number)...

How to find the exception error point of the Image Button in this log? I've been struggling with this 'android.view.InflateException' issue in this log for a long time. The issue was that an activity composed of the Room database and Recyclerview could not be executed in API level 21/22. Of course, if I adjust the minSdk 21 setting higher to 23, that's it. But I didn't want to do that. I initially thought this was an issue with LinearLayoutManager or something because of the 'Caused by: android.view.InflateException' message in the log. Eventually I found out...

How do I use the name of the picture (It's already in "drawable") for use in the program? I tried to do it through "string" but it doesn't work. How to do it? var TestString : String = "test1.png" var TestId : Int = R.drawable.TestString

Android - Listening to incoming messages Am working on an android app that should be able to listen to incoming SMS and then show notifications. Later am using content://sms/inbox public List getAllSms(String folderName) { List lstSms = new ArrayList(); Sms objSms = new Sms(); Uri message = Uri.parse("content://sms/"+folderName); ContentResolver cr = mActivity.getContentResolver(); Cursor c = cr.query(message, null, null, null, null); mActivity.startManagingCursor(c); int totalSMS = c.getCount(); if (c.moveToFirst()) { for...

Formatting sensor event timestamp into date and time I am collecting Watch sensor data in a JSON file and I need to put a time stamp in the data to know when it was collected but I am getting time in milliseconds. How can I convert the sensor timestamp into a readable form of date and time and then put it as a JSON object in a JSON file to store the data?

Searching by Value in Redis in Spring Boot and Kotlin Let's consider we are in Spring Boot with Kotlin. For Redis queries, we're using a RedisTemplate dependency. Considering the following data class: data class Person ( val id: String, val name: String ) For saving we'll use: fun save(person: Person) { redisTemplate.opsForValue().set(person.id, person) } Then, is it possible to search by name, which is a property of the Person class? And if yes? How can this be done? Thank you in advance!

Jetpack Compose: Bottom Sheet not showing up as expected I have a scaffold that has a BottomNavigationView and the content. On one of my screens, I have a filter button that navigates me to the FilterScreen. FilterScreen is a bottomSheet composable. When I navigate to FilterScreen the result is : So as you can see when I click the filter button, the BottomNavigationView is hiding but the FilterScreen is not showing. Here is the code : val navController = rememberAnimatedNavController() val bottomSheetNavigator =...

Can't see the button in small screens I have a dialog implemented with BottomSheetDialogFragment, in which i have a list, an edit text and a bottom button that is has to be static. My problem is that in small screens the button and the edit text doesn't seem to appear, only the list. And in normal screens it works well and dont understand why. Ive tried a lot of stuff and no luck, so any helpo is appreciated Xml: Dialog: class MultiSelectionListDialog( private val...

How to filter in kotlin using predicates What i'm trying to achieve is using a filter function with dynamic predicates. What I did so far is creating a function that choose the best predicate: fun buildDatePredicate(dateFrom: LocalDate?, dateTo: LocalDate?): Predicate { if (dateFrom != null && dateTo == null) { return Predicate { myItem -> myItem.date.isAfter(dateFrom) } } if (dateTo != null && dateFrom == null) { return Predicate { myItem -> myItem.date.isBefore(dateTo) } } if (dateTo != null &&...

Unresolved reference: FragmentHomeBinding Unresolved reference: FragmentHomeBinding error when extending BaseFragment.

Why do we need to give default value inside getBoolean() in kotlin? I'm trying to put some data whose key: "isLoggedIn" and a value: true inside a shared preference file. I do it this way... sharedPreferences=getSharedPreferences(getString(R.string.preference_file_name), Context.MODE_PRIVATE) fun savePreferences(){ sharedPreferences.edit().putBoolean("isLoggedIn",true).apply() } and then if I want to retreive/store this key-value pair inside a variable it allows me only when I give the second parameter which is a value or defualt value like this. val...