Failed read data from firestore after Changing the device date i'm developing a quiz app. it is working fine. but when i change the device date like more than 30 days, it is unable to read data from firestore. see my code private fun getDataforDQuiz() { val docRef = db.collection("MonthlyQuiz") .document(getQuizNum.toString()) docRef.get() .addOnSuccessListener { documentSnapshot -> if (documentSnapshot != null) { val x = documentSnapshot.toObject() if (x != null) {...

How to listen to view visibility status on screen in a scrollview in android I have bunch of views onscreen CardView, ViewPager etc inside a scrollview.I want to listen to visibility changes of items on screen like if a particular view goes out of the visible screen like when scrolled i want to listen to that change.How do i achieve this ?

E/libprocessgroup: set_timerslack_ns write failed: Operation not permitted and NetworkUtility.shouldRetryException: Unexpected response code 401 I am creating a news app for just practice and I am facing this issue in my Logcat while I run my news app. Does anyone know about this issue and how to fix it? The app doesn't crash but it doesn't show anything rather than the app name. THIS IS SHOWN IN THE LOGCAT 2022-01-05 153423.264 13578-13578/? E/tomar.newsfres: Unknown bits set in runtime_flags: 0x800000 2022-01-05 153423.515 13578-13578/com.namantomar.newsfresh E/libprocessgroup: set_timerslack_ns write failed: Operation not...

In AndroidViewModel, how to use the received application property? A simple AndroidViewModel looks like class AppViewModel(application: Application) : AndroidViewModel(application) {...} Now, to access the application property all over the model, we need to add a val/var to it (per my knowledge). class AppViewModel(val application: Application) : AndroidViewModel(application) {...} This however gives error, saying Accidental Override: The following declarations have the same JVM signature: getApplication() How do I get around this?

Module Error "Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.5.1, expected version is 1.1.16" I am writing a kotlin library for our project. When finished i built an .aar file and sent it to the team. But they have an error as "Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.5.1, expected version is 1.1.16" (core-ktx version of the library was 1.3.2 and kotlin-gradle-plugin version was 1.5.0 at that time). I researched about it and found this thread. <a...

File not found Exception while accessing in Android 11 - Target SDK 30 - Android I am downloading audio and I want to play that downloaded audio within my app From the below code, I am downloading the audio ContentValues contentValues = new ContentValues(); contentValues.put(MediaStore.Audio.Media.DISPLAY_NAME, finleName); contentValues.put(MediaStore.Audio.Media.MIME_TYPE, "audio/mpeg"); contentValues.put(MediaStore.Audio.Media.RELATIVE_PATH, Environment.DIRECTORY_DOWNLOADS + sep + newFolder + sep);...

How to add a dependency to a native library from a kotlin native For example, I know that there is CoreCrypto for kotlin native. How to modify kotlin gradle script so the following code compiles: import kotlinx.cinterop.* import platform.CoreCrypto.CC_SHA256 // compile error, obviously, as there's no depenedncy import platform.CoreCrypto.CC_SHA256_DIGEST_LENGTH fun main() { // ... } My gradle script: plugins { kotlin("multiplatform") version "1.6.10" } group = "com.jaga" version = "1.0-SNAPSHOT" repositories { mavenCentral() } kotlin {...

Laggy Lazy Column Acndroid Compose I've created a whole app in Jetpack Compose. However, the performances on the Lazy Column are pretty bad and it does not make any sense. Lazy Column should be the substitution of RecyclerView, but RecyclerView works much better at the moment. I made a Lazy Column with headers and Lazy Rows as items (basically a nested list). As you can see there are images but I used the Coil library so everything should be loaded in a separate thread. I've already seen these discussions: <a...

MP Chart not displaying Bar Values for long decimal values I am using Bar type of MP Chart in Android and its working fine. I am also displaying Values on each Bar. But If the below values passing as a chart BarEntry its not displayed above the Bar. Values are : -0.0101945, -0.0383544 When I have passed it as below its displaying -0 : values.add( BarEntry( i.toFloat(), (-0.0101945).toFloat() ) ) and When I passed it as below, Its displaying nothing : values.add(...

Android Kotlin equivalent of Swift Data(bytes) I have the following code in Swift 5: var value1: UInt64 = 9982738475723 var value2 = UInt32(truncatingIfNeeded: value1) let bytes = Data(bytes: &value2, count: MemoryLayout.size(ofValue: value2)) What is the Android Kotlin equivalent of this swift data(bytes operation? Basically I am trying to convert UInt32 and UInt64 values to bytes arrays in Android. As an iOS developer it is not easy for me to code in Android so thanks for your help.

Is there a difference between using GlobalScope.launch and CoroutineScope().launch to launch a coroutine? There are different ways of launching a coroutine in Kotlin. I found a couple of examples where GlobalScope and CoroutineScope are...

Why I cannot go back to previous fragment with Navigation Component? In my app I have 3 main screens - Explore, My Groups, Profile. In My Groups I have list of groups and when I click on one I am redirected do single GroupFragment. That's work fine. But when I want bo back by gesture (from right side of the phone to center) the app is going to background and the "desktop" is displayed. I want to go back from group to MyGroups fragment. Why my code below is not working as it should? nav_dashboard_menu: nav_my_groups:...

What happen if the app is stay pause for 2 3 days I observe that when my app is in a pause state for 2 3 days without touching the app/tablet, the app is starting from the login screen (Login screen is root/Launcher Activity of app), what is happening that my app has auto-login features if login first time but some times I see that my app shows the login dead screen, hence I will have to login again.

Viewpager 2 causing index issue when opening fast Hey I am working in ViewPager 2 with Paging 3 library in my application. When I am opening my view pager screen again and again i.e. Open the screen and close it and again so on so. First few times it opens correct page number but sometimes it giving me wrong page number to open when doing fast open and close. I asked similar question and it solve the issue, but something is similar issue came and 100% confident this issue is related...

com.bumptech.glide.load.engine.GlideException: Failed to load resource in kotlin? class com.bumptech.glide.load.engine.GlideException: Failed to load resource class com.bumptech.glide.load.engine.GlideException: Failed to load resource in Android 10 only <a href=""...

How to update compose ui when class object property changed in list So we know what compose states keeping links to the objects set as it's value and only way to update ui is to set a new object for this state.value: val obj1 = MyClass(name = "somethng") val obj2 = MyClass(name = "somethng else") val state = remember {mutableStateOf(obj1)} state.value = obj2 If we will change class object property it will not update ui and there's a trick with policy to update it anyway: val obj1 = MyClass(name = "something") val state = remember...

Kotlin. Deprecation with multiple choice What is the best option to provide a multiple-choice deprecation in Kotlin? I'm trying to find the best way to provide a replacement for deprecated parameter. Having a enum class A with a deprecated element X enum class A { @Derecated X, Y, Z } I want IDE to suggest a quickfix replacement for X in my code. To support it I can provide a replaceWith value. However, it's not possible to provide a multiple-choice option. X could be replaced with Y or Z. enum class A { @Derecated(...

Android Kotlin - How to use ExoPlayer SimpleCache as of today So far I found only deprecated stuff: val evictor = LeastRecentlyUsedCacheEvictor((100 * 1024 * 1024).toLong()) val databaseProvider: DatabaseProvider = ExoDatabaseProvider(context) val simpleCache = SimpleCache(File(context.cacheDir, "media"), evictor, databaseProvider) val mediaSource = ProgressiveMediaSource.Factory( simpleCache?.let { CacheDataSourceFactory( context, 100 * 1024 * 1024, 10 * 1024 * 1024, fileUrl, it ) }...

How to provide Jsoup network service interface dependency injection with Hilt? With Retrofit you can provide your retrofit builder and then create your network interface as such but how can you do the same with Jsoup Network Service? @Provides @Singleton fun provideRetrofit(): Retrofit { return Retrofit.Builder() .baseUrl("url") .addConverterFactory(GsonConverterFactory.create()) .build() } @Provides @Singleton fun provideNetworkService(retrofit: Retrofit): NetworkService { return...

Android DiffUtil in item-specific situations I usually use diffutil with recyclerview when needed. Right now I have situation where the items I get from backend look like this: data class CarouselItem(var url: String, var pictureUrl: String, var visible: String) All 3 fields can be the same for 2 items. I am thinking what is the best way to create diffUtil here. IMHO I should make some wrapper that will add a field by which I can differentiate 2 items (for example ID field). Also in this case in my diffUtil, override function...

Hi, is there a way to get the type of kotlin delegated property in process method of AbstractProcessor? is there a way to get the type of kotlin delegated property in process method of AbstractProcessor? I want to generate some code based on my fragments variables. Most of them are kotlin properties and I have no idea how to get type of that variable. It looks like it is impossible to get since kotlin generates something likes this class C { var prop: Type by MyDelegate() } // this code is generated by the compiler instead: class C { private val prop$delegate = MyDelegate() var...

Room 2.3.0 ignores column annotations of inherited fields With Room 2.2.6 it was possible to define column annotations in an abstract class. Entity classes could extend the abstract class and inherit the column definitions. This allowed to define common columns (e.g. id) in one place and use them in many places. Abstract class: abstract class BaseUnit( @PrimaryKey @ColumnInfo(name = "id") override val id: String, @ColumnInfo(name = "boxId") override val boxId: String ) Derived entity class that inherits the declaration of id and boxId:...

Unable to iterate over stream inside use{} block I just want to print name of every user stored in database. I am using this repository: @Repository interface User: JpaSpecificationExecutor, PagingAndSortingRepository { @Query("from User") fun findAllUsers(): Stream } inside this Service: @Service class MyService(val user: User) { private val log = LoggerFactory.getLogger(javaClass) @Transactional(readOnly = true) fun printNames() { log.info("here") user.findAllUsers().use { users ->...

error in using toInt() function in android developement(Kotlin) I am getting error when i use toInt() function in android(Kotlin) val num1=findViewById(R.id.num1).text.toString() val num2=findViewById(R.id.num2).text.toString() when i add toInt() val num1=findViewById(R.id.num1).text.toString().toInt() val num2=findViewById(R.id.num2).text.toString().toInt() i am getting error when i run my app on my phone. I am a newbie in android developement so i decided to make a simple app which calculate two numbers but when i try to use toInt() my app not run...

While checking if the information is full, the app crashes first and then shows the Toast message override fun onViewCreated(view: View, savedInstanceState: Bundle?) { super.onViewCreated(view, savedInstanceState) val navController = Navigation.findNavController(requireActivity(), R.id.fragment) binding.bottomNavigationView.setupWithNavController(navController) calculate.setOnClickListener { val panelC = binding.panelCount.text.toString() val panelS = binding.panelSize.text.toString() val landS = binding.landSlope.text.toString() val...

How to return a new instance of `T` in an inline reified function? I have the following code: private inline fun T.test(): T { if (T::class.java == Double::class.java) { return 0.0 } return this } I expected that that would work (as long as I checked the type of T), but the IDE points this out: The floating-point literal does not conform to the expected type T Is there any way to make it work?

Generic spring data repositories for two database connections I have an application that needs to connect to two databases but the entities are repeated for both databases. I managed to get the application to connect and persist the entity in both databases but I had to create two repositories, one for each database and I didn't find this approach correct. There is a better way to do this management where I create a repository and define for it which connection it should use based on a flag for example. First database configuration @Configuration...

How to use custom icon of Google Maps Marker in Compose? The problem If I use the following helper / extension I will get an exception IBitmapDescriptorFactory is not initialized. I checked Stackoverflow, some of them recommend to create a local property of the factory and than assign it but this does also not work. Android Studio shows me the icon on the right side, because of this I think the asset has been added correctly. Source fun Webcam.toMarkerOptions(): MarkerOptions { return MarkerOptions() .title(name)...

AAPT: error: expected reference but got (raw string) #A5D3F4 I do not understand what the mistake is, please help

Does View gets redrawn when property programatically changed to same value? Let's have some View in fragment (e.g. LinearLayout or ImageView). If I change property of this View programatically (e.g. change backgroundColor) to same property that is already set, is view redrawn/rerendered? Example of double set: binding.someLinearLayout.setBackgroundColor(redColor) binding.someLinearLayout.setBackgroundColor(grayColor); binding.someLinearLayout.setBackgroundColor(grayColor); binding.someLinearLayout.setBackgroundColor(grayColor); LinearLayout will be redrawn twice or...