How to adjust toolbar color on BottomSheet expand slide I'm using bottom sheet on my screen. Also here i have appbar which is transparent. When i expand my bottom sheet it's expand to appbar height. But the problem is - my appbar still transparent. I want to animate of fading this color into black when bottom sheet expanding to fullscreen and make it transparent again when bottom sheet is half expanded. I have callbacks on slide of bottom sheet: private fun addBottomSheetCallback(bottomSheetBehavior: BottomSheetBehavior) {...

How to set margin in SnackBar I'm trying to add margins at bottom, left and right to my SnackBar but I'm not able to get it. That's what I tried: var snackBar = Snackbar.make(binding.root,msg,Snackbar.LENGHT_LONG) var snackbarLayout = snackBar.view. as Snackbar.SnackbarLayout var layoutParams = snackbarLayout.layoutParams as CoordinatorLayout.LayoutParams layoutParams.setMargins(32,0,32,32) snackbarLayout.layoutParams = layoutParams snackBar.show() I get an error in snackbarLayout.layoutParams and its this:...

How to let kotlin library support java project friendly I create an kotlin library and published into maven central. However, if this library is used by pure java project, user must add the dependency “kotlin-stdlib” explicitly. It looks like that the “koitlin-stdlib” is automatically excluded from grade/maven dependency tree because it is treated as provided dependency. How to resolve this problem?

Spring native TypeHint name expect and element expected error So i am trying to setup PostgreSqlDilect by following this StackOverflow ans. and when I compile the project.I get the following error

Task :kaptGenerateStubsKotlin FAILED e: /home/boris/IdeaProjects/kastbin/src/main/kotlin/com/kastbin/KastbinApplication.kt: (8, 67): Name expected e: /home/boris/IdeaProjects/kastbin/src/main/kotlin/com/kastbin/KastbinApplication.kt:...

Kotlin - Ktor Optional API resource field handling When implementing a REST API with Ktor (and Kotlin), it supports the optional field handling of Kotlin. Which works for POST and GET, but what about UPDATE? For example, you have the following resource: @Serializable data class MyAddress( var line1: String? = null, var line2: String? = null, var city: String? = null, var postal_code: String? = null, var state: String? = null, var country: String? = null ) So all MyAddress fields are optional (with a default value)....

Matched object type miss when expression case. Kotlin It just blew my mind. So maybe someone was faced with such a problem. I try to use a new approach for Retrofit with statements. The problem is that even with a matched instance of the result else block applies. How can it be? override fun invoke(result: GraphCallResult) { when(result) { is GraphCallResult.Success -> { collections.postValue(Converter.convertCollections(result.response.data?.collections)) loading.postValue(false)...

UninitializedPropertyAccessException in Android Studio with viewModel I'm New to Kotlin and Android Studio and trying to implement Room database with ViewModel now, but I face the problem "kotlin.UninitializedPropertyAccessException: lateinit property habitViewModel has not been initialized" I think that this is due to the early initialization of View Model, but I can't find the way to fix it. This is my code below. Activity OnCreate Code class HabitActivity : AppCompatActivity() { lateinit var binding : ActivityHabitBinding lateinit var habitViewModel...

Glide is not loading images from firebase child key folder ##Kotlin## Ive Started studying kotlin and im trying to upload and retrieve details(to recycler view) from firebase realtime database. while uploading an entry(both text and imageUrl) into realtime database ,text entries are made but getting cleared at once image(single image or multiple image) gets uploaded. Only imageUrl alone is getting stored. For that i used push() method to make entry for imageUrl and its working fine. Now the problem is retrieving the imageUrl from child key folder. when i tried...

Periodically refresh Kotlin flow (polling) How shoud I peridically "refresh" kotlin flow, to get fresh data. I have list of book id's stored in room database. From network api I get the actual books using the stored ids. My goal is to listen database changes and map the book ids to actual books. That works fine. The problem is, how shoud I re-fetch periodically book data from network api but still keep listening the database all the time? So changes in book ids in database shoud allways trigger network api call (booksApi.get()). fun...

How to implement package manager in fragment? I try to implement package manager in Fragment, but it seems that in fragment we can't implement package manager. Here the code I use: private fun takePhoto() { val intent = Intent(MediaStore.ACTION_IMAGE_CAPTURE) intent.resolveActivity(packageManager) createTempFile(application).also { val photoURI: Uri = FileProvider.getUriForFile( this@CreateStoryActivity, "com.dicoding.bpaai.submission", it )...

Jetpack Compose set image height before loading remote image I have a list of dynamically sized images. I already know the size of the images in pixels. I would like to place a placeholder of the same remote image dimension before the image is loaded just so that while scrolling in the LazyColumn the list doesn't jump up and down Given the following code, which uses Coil: @Composable fun CloudImage( url: String, modifier: Modifier = Modifier, imageHeight: Int // I also got the image width... but I am using ContentScale = Fit ) { AsyncImage(...

React native android emulator Task :app:packageDebug FAILED error I got this error while react-native run-android. I tried ./gradlew clean ./gradlew -stop and wipe data, remove build folder, .gradle folder etc... But can't solve the problem. Here is the error code I got. Does anyone has an idea to solve that problem? $ react-native run-android warn Package @svgr/webpack has been ignored because it contains invalid configuration. Reason: Package subpath './package.json' is not defined by "exports" in (...)/node_modules/@svgr/webpack/package.json info Running...

lateinit property mClickListener has not been initialized Adapter kotlin i make adaper onclick listener but somehow theres error message lateinit property mClickListener has not been initialized Adapter kotlin variable on click lateinit var mClickListener: ItemClickListener base view holder inner class AdapterListProjectVH2(itemView: View) : BaseViewHolder(itemView), View.OnClickListener { private val cvItemViewVisualInsp: CardView = itemView.findViewById(R.id.cv_itemview_visual_insp) private val imgMarkOnMap: ImageView =...

kotlin.reflect.jvm.internal.KotlinReflectionInternalError when minifyEnabled I get a problem. when my app minifyenabled is true , it crashed ! and the error is following: kotlin.reflect.jvm.internal.KotlinReflectionInternalError: This callable does not support a default call: public constructor LoginResultBean I think there must be some relationships with moshi and R8. I need help...

Kotlin: ListVew inside a fragment i am trying to create a very simple listview inside a fragment but there is something that i am doing wrong and the list view doesnt show on the screen. this is my fragmentWifi.kt: import android.os.Bundle import androidx.fragment.app.Fragment import android.view.LayoutInflater import android.view.View import android.view.ViewGroup import android.widget.ArrayAdapter import android.widget.Button import android.widget.ListView // TODO: Rename parameter arguments, choose names that match // the...

Android toast displaying incorrect String value When setting a switch as off the user should receive a toast saying "alarm set for 00.40" for example, but for some reason the "alarm set for" has been swapped out for a string of numbers as below. The code: override fun setSwitchOn(alarm: Alarm) { val toastTime = formatTime(alarm) val alarmManager = AlarmManager( alarm.id, alarm.hour,...

Kotlin VideoView path with a changing resource name I have a group of mp4 files (v1.mp4, v2mp4,...) inside the raw folder. I need to read them randomly after a button is clicked. I get the message "not possible to play this video". If I point to a specific file in the setVideoPath, ("android.resource://" + packageName + "/" + R.raw.v2) the video is played, but do not change when the button is hit. My code is the following: fun onClick(view: View) { // Change the word randomly randOne = ThreadLocalRandom.current().nextInt(1,...

Custom Options Menu item does not trigger `onOptionsItemSelected` when clicked In my top AppBar options menu I needed an custom menu item, so I defined it like so in my Fragment: override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) { menu.add(Menu.NONE, 0, Menu.NONE, R.string.share) .setActionView(R.layout.menu_item_share_button) .setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS) menu.add(Menu.NONE, 1, Menu.NONE, R.string.settings) .setIcon(R.drawable.bootstrap_icon_gear_fill)...

popupTo property disturbs the exitanim opteration While Logging out from HomeFragment to LoginFragment everything works fine except the app:exitAnim="@anim/slide_out_right" which doesn't take effect but behaves according to the previous operation while moving from LoginFragment to HomeFragment app:exitAnim="@anim/slide_out_left" Problem starts when I use the property app:popUpTo="". I just want to exitAnim to right but it moves to the left, don't know why. Thanks for your time and help Note: while moving back from DetailFragment to...

Consuming a Kotlin Function with an Argument in a Java file using the correct syntax I have a variable called onItemSelected in a Kotlin file var onItemSelected: ((String) -> Void)? = null In a Java file I am trying to set that variable, but am unable to figure out the correct syntax. The lambda expression keeps wanting to return a Void, however, when I return a void, then it doesn't compile. binding.myCustomView.getOnItemSelected() = (item, Void) -> { //What should happen here? Log.i("Test", item); return; }; I have tried various syntax,...

Livedata room : dao query returns null in my MVVM project I am using live data queries to DAO to update the live data of the list of data in my ViewModel and then bind this livedata to adapter binded to recycler view in the fragment, it works correct except for the case when there are 2 queries in a row to room database , so it returns null pointer and doesn't properly update UI. Part of the fragment code: @AndroidEntryPoint class HomeFragment : Fragment(), NoteCardAdapter.NoteTouchListener, SearchView.OnQueryTextListener{...

Hibernate pagination not working when using native queries (Named query exists but its result type is not compatible) I have a two named native queries in my orm.xml, one for retrieving the data, and one for doing the count for my pagination: select count(*) from from person select first_name, last_name from person To load this data, I have a Spring Data Repository, which loads a projection of the data (my actual code is more complex than the provided example): @Query(nativeQuery = true) fun findPeople(pageable: Pageable): Page Now, when I execute the above code,...

Is it possible to set realtime database value using setValue() function in the adapter? I am trying to set the value of the realtime database using setValue() function. I don't know it works or not, but I have seen many using setValue() function in the model but they never used it. But I am trying to implement in my code. here is my adapter code:- class PostsAdapter( private var mContext: Context, private var mPosts: List, private var isFragmnet: Boolean = false ) : RecyclerView.Adapter() { override fun onCreateViewHolder(parent: ViewGroup, viewType: Int):...

Safeargs library don't create SpecifyAmountFragmentDirections After adding the argument, the library doesn't create the Direction class for me to be able to pass arguments This is my code: nav_graph.xml build.gradle: dependencies { classpath "androidx.navigation:navigation-safe-args-gradle-plugin:2.3.5" } plugins { id 'androidx.navigation.safeargs.kotlin' } I'm currently working with Android Studio 4.1.2. I tried to invalidate the cache, clean the project and rebuild it but it didn't work. Looking through the old answers I...

Kotlin - mutableList always returns empty list I'm using a range with an inline transform so that I can have a list of values and that I want to send it to a method in forEach. But, somehow I see that is not happening. This is the example code I'm using var valuesList: List = mutableListOf() (1..5).map { valuesList.plus(Test(, Instant.now()) // Have a condition to check the value and using the value in next statement valuesList.plus(Test(, Instant.now()) }.forEach { } Somehow I always see valuesList as empty list. Can anyone...

Deprecated Gradle features were used in this build, making it incompatible with Gradle 8.0 I have been working on this project and everything seem perfect until about a week ago, I tried to launch the project on an emulator and ran into the error below. $ yarn react-native run-android yarn run v1.22.15 $ C:\Users\Chifes\Desktop\apps\RoGoods\node_modules\.bin\react-native run-android info Running jetifier to migrate libraries to AndroidX. You can disable it using "--no-jetifier" flag. Jetifier found 1519 file(s) to forward-jetify. Using 4 workers... info Starting JS server... info...

Play random sound from RAW, on Button click I am relatively new to Kotlin. I want to play a random sound from my RAW folder, every time I click the play button. There are about 13 sound file in my RAW folder. mMediaPlayer = MediaPlayer.create(this, R.raw.d) mMediaPlayer?.start()

Kotlin, how can I read a dynamic website as text? As titled, I'm trying to read the content of sites like this one, which appears to be javascript based. I tried using plain jdk lib, then jsoup and then htmlunit, but I couldn't get anything useful out of it (I see just the source code or just the title or...

Attempt to invoke virtual method 'void androidx.lifecycle.MutableLiveData.setValue(java.lang.Object)' on a null object reference (Android Kotlin) Sorry for the long title, however, I am unsure where this error is at in my code, however, I do suspect the error lies in the implementation of the liveData and Observation. The app which I am working on is an Unscrambler word app where users have to unscramble the letters displayed on the fragment. My code so far consists of 2 Kotlin classes listed below, a fragment and a ViewModel class. I have currently assigned the variable _currentScrambledWord as a MutableLiveData() and utilised the...