Why does my button view id change at runtime? I'm trying to write a simple Android application in Kotlin that changes the colors of different Views. I have the following code to initialize views and click listeners (private lateinit declarations earlier of course): private fun setListeners() { boxOneText = findViewById(R.id.box_one_text) boxTwoText = findViewById(R.id.box_two_text) boxThreeText = findViewById(R.id.box_three_text) boxFourText = findViewById(R.id.box_four_text) boxFiveText =...

In flutter how to prevent screenshot to secure my app In my flutter app, its support the kotlin for android part ,i can't able to find a code to prevent the screeenshot in app which is written in kotlin language. I searched over the google then i found the code that is written in java language but i require the kotlin code to prevent the screenshot. package com.example.schoolbells import io.flutter.embedding.android.FlutterActivity import android.os.Bundle; import androidx.annotation.NonNull; import io.flutter.embedding.engine.FlutterEngine;...

How to mock kotlin map function? I'm trying to stub a kotlin extension .map: private fun stubGetUsers(users: List) { val genericRawResult = mock() whenever(genericRawResult.map { User() }).thenReturn(users) usersDao.stub { on { it.queryRaw("", RawRowMapper { _, _ -> User() }) }.doReturn(genericRawResult) } } When I run the test, I'm getting a NullPointerException: public inline fun Iterable.mapTo(destination: C, transform: (T) -> R): C { for (item in this) destination.add(transform(item))...

Retrieving user information with Google sign in GoogleSignInAccount acct = GoogleSignIn.getLastSignedInAccount(getActivity()); if (acct != null) { String personName = acct.getDisplayName(); String personGivenName = acct.getGivenName(); String personFamilyName = acct.getFamilyName(); String personEmail = acct.getEmail(); String personId = acct.getId(); Uri personPhoto = acct.getPhotoUrl(); } I used google auth. for my app. I need to retrieve info of the signed-in user. Especially photo. But when I try to use that code block...

Stream FTP file java I am working on file streaming I want to stream an FTP file on the Android app but getting this error java.lang.RuntimeException: java.io.IOException: setDataSource failed. Kotlin code val glueHost = VideoSupportFragmentGlueHost(this@PlaybackVideoFragment) val playerAdapter = MediaPlayerAdapter(context) playerAdapter.setRepeatAction(PlaybackControlsRow.RepeatAction.INDEX_NONE) mTransportControlGlue = PlaybackTransportControlGlue(getActivity(), playerAdapter)...

How do I add tables to the from clause? I have a scenario where I need more than one table in my from clause but there is no field to join the two tables on so I don't need a join. Basically, what I want my SQL query to look like is this: SELECT cg.id, cg.effective_date FROM "user" u, community_guidelines cg WHERE u.id = 1 AND u.guidelines_accepted_date < cg.effective_date I tried to get this to work in code but did not have any luck. Is there a way to explicitly add a table to the from clause of my query?...

Remove LinearLayout with a button, which is inside this LinearLayout I've created a custom linear layout within android studio. This layout gets inflated into another vertical layout programatically. Now I want to map a button inside this layout, which can delete the whole object. Here is my and as you can see the button "DELETE HERE" should remove the 3 items, time, weekday and the button itself. This is my class and here class AlarmCard @JvmOverloads constructor( context:...

Why is my recyler view code unreachable in this kotlin file To check I have just assigned a background colour to it. But it did't change. Here is apiece of code. Scroll to the bottom. I've commented the line. class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelectedListener { lateinit var toolbar: Toolbar lateinit var drawerLayout: DrawerLayout lateinit var navView: NavigationView override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main)...

Why is it possible for a JvmStatic method to access and modify state? I would've assumed that a method annotated with @JvmStatic would be unable to access, let alone modify, a class property. Based on the following this is not the case. This code clearly updates state, printing From main - 11. object Foo { var bar = 5 @JvmStatic fun updateBar(updateVal : Int) { println("bar = $bar") bar += updateVal println("bar = $bar") } } fun main() { Foo.updateBar(6) println("From main - ${Foo.bar}") }

Return List from kotlin script to fastfile i am calling kotlin script form fastfile . Want to return list from kotlin script to fastlane Fastfile lane:lanename do data = sh "kotlinc -script script.kts" end script.kts fun main() : List{ return data } But in fast file data is getting value as a string instead of list

Spinner &amp; ViewPager2 appearing blank when trying to add items from Fragment via Adapter Previously I was using a TabLayout with ViewPager1 to show content in a DialogFragment, but now I want to use a Spinner with ViewPager2. When I use the Spinner-related code it causes the app to crash and the Spinner to appear blank, which has now puzzled me. Does anyone know why my Spinner is not showing any items + ViewPager2 not showing any Fragments and how to recify this? The problem seems to be with this section of code, which the logcat points to: val arrayAdapter =...

Best way to save Room database for later use I want to be able to ship a small Room database with my Android application. I have the code to create the database and populate it with data. I have looked at createFromAsset and createFromFile. How can I create the assets I will be using in the first place if I have already populated a database? It would also be useful to have a way of checking whether...

System suggestions when using SearchView with custom searchSuggestAuthority I have an android.widget.SearchView in the ActionBar of my app. When I start typing it shows results from my ContentProvider hooked to a Room database. This all works fine on the emulator, but on my real device when I touch the SearchView text field I see my results for an instant then the popup gets replaced with this weird popup showing two phone numbers (this are numbers known to me). If I start typing this box goes away and the proper results start showing up again. <a...

application theme broken in android Q my program has 2 dark and light themes On Android < Q everything works fine But if I use Android Q and the theme of the program is light and the theme of the phone is dark, the theme of the program will be disrupted. Interestingly, there is no problem if I set the program theme according to the phone theme Light Theme Dark Theme

Scrollbar shadow Is there any way to add shadow to the scrollbar thumb and scrollbar track? I already customize my scrollbar by adding scrollbarThumbVertical and scrollbarTrackVertical drawable, but how do I add elevation to it?

How to increment counter of notification badge from adapter kotlin I am trying to build an E-commerce app having basic functionalities. I want my number of items in the cart to reflect on the action bar. Currently, my UI looks like this. For creating the notifications this is what I have done: cart_layout.xml: My cart_menu.xml inside the menu directory looks like: My onCreateOptionsMenu functions inside Activity looks like this:...

Android Kotlin API Request | Access the list after the gson process Im trying to access my list in "mainactivity" -> StartActivity after the api request: "mainactivity" -> StartActivity: class StartActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.startseite) fetchJson() ... } fun fetchJson() { println("Attempting to Fetch JSON") val url = "https://....." val request =...

Calling overloaded method of Kotlin in Scala Here are two functions: kotlin.kt interface TraitA fun foo(a: Any, f: (T) -> Unit) { TODO() } another adapter function is in Scala.scala import KotlinKt.foo object Scala { def adapter[E Unit): Unit = { foo[E](None, { a => // Do something kotlin.Unit.INSTANCE }) } } Till this moment, it can pass the compilation. But when I add an overload function in Kotlin side: interface TraitA fun foo(f: (T) -> Unit) { TODO() } fun foo(a: Any, f: (T) -> Unit)...

Create drag and drop between two RV adapters with data changing using ViewModel In my project I have a recycler view which used for two cases (two states of entity). I want to make items draggable between two RVs, but the DragEvent.ACTION_DROP changes the state of element which was in under of dropped item. Is it possible to reverse it? Can I get the position of the item where the drop was finished? I have found many other solutions, but in my case the big problem is changing position of items, because they're updating by ViewModel's methods invocation in main...

How to add an automatic time stamp to entity? I have an entity: @Entity data class Pet( @Id @GeneratedValue var id: Long = 0, @Column var creationTime: Long = System.currentTimeMillis(), @Column var updateTime: Long = 0, @Column var weight: Int ) { } I would like that each time a field such as weight is modified the updateTime gets updated automatically. Is there a way to do this? Right now I manually update the updateTime... this is not scaling well. Maybe spring boot can do it for me?

io.reactivex -&gt; android.os.NetworkOnMainThreadException Android Studio 3.6 In my activity: private fun update(force: Boolean = false) { if (!force) { ) } else { kycStateRepository.update() } repositoryProvider.account().update() } open fun updateIfNotFresh(): Completable { return synchronized(this) { if (!isFresh) { update() } else { Completable.complete() } } } import io.reactivex.Completable import...

Programmatically expand/collapse Bottom Navigation View in CoordinatorLayout [Kotlin] Prior to this question, setVisibility works but the problem is, setVisibility = true, after hiding the BottomNavigationView, shows up a blank space the blank space is the space of the BNV, but no layout is inflated in it, due to the HideViewOnScrollBehavior Q: How to expand the BNV programmatically

How to solve error:org.koin.core.error.InstanceCreationException: Could not create instance Koin I used koin in another app that i have one server and one API client and it works but in new app i have two server and two API client , when i want to call APIs i faced with below error : E/AndroidRuntime: FATAL EXCEPTION: main Process: de.netalic.stork, PID: 12301 java.lang.RuntimeException: java.lang.reflect.InvocationTargetException at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776) Caused by: java.lang.reflect.InvocationTargetException at...

SonarQube not finding Kotlin Junit5 tests I'm trying to set up a sample android studio project in Github which integrates also its CI connected to SonarQube. I'm having problems with sonarQube due to it says there is no test coverage applied. However there is, in kotlin and with Juni5, but there is no way to set sonar.tests for recognizing it. this it the sonar-project.properties test are run fine either locally and in the CI when a branch of the...

Android 10 image upload error: kotlin.io.NoSuchFileException: : The source file doesn't exist Hello i am trying to take image from local storage and upload it to the server. But on android 10 and stock android 9 its not working. Its giving me this error: Fatal Exception: kotlin.io.NoSuchFileException: : The source file doesn't exist. at kotlin.io.FilesKt__UtilsKt.copyTo(Utils.kt:183) at kotlin.io.FilesKt__UtilsKt.copyTo$default(Utils.kt:181) at id.zelory.compressor.UtilKt.copyToCache(Util.kt:82) at...

How to make countdowntimer for android? im new at coding, i dont know even basics but I need make somekind 20 seconds countdown timer and i didin't found any working tutorials. I tried my best but always some error came up.

How to debug firestore.get mhetod to find out what is coming How to debug that code to find out whahat is coming because i send items in recyclerview and nothing coming. private fun getNoteList(): Task { val firebaseFirestore = FirebaseFirestore.getInstance() Log.d("HomeFragment"," ad "+ firebaseFirestore.collection("Notes").get().toString()) return firebaseFirestore .collection("Notestes") .orderBy("title", Query.Direction.ASCENDING) .get().addOnCompleteListener{ task...

How to calculate a value with the formula "F.INV.RT" from Excel on android? I'm trying to find a way to calculate the Excel formula F.INV.RT in my app. I didn't find her equation on Google, so I used Apache POI to create an Excel spreadsheet, insert the value I need in a cell and return the formula value. The problem is that when running the app, it generates an exception saying that this "F.INV.RT" formula is not yet implemented...

Is there a way to set and merge without creating a map for just 1 value I'm planning to add just one more value into my user docRef.document(FirebaseAuth.getInstance().currentUser!!.uid).set("hasShop", SetOptions.merge()) Now, I want to say that this hasShop value should be true, but I dont want to do this val map = hashMapOf map["hasShop"] = true docRef.document(FirebaseAuth.getInstance().currentUser!!.uid).set(map, SetOptions.merge()) Is there a better way to do it like this ? docRef.document(FirebaseAuth.getInstance().currentUser!!.uid).set("hasShop"...

Why doesnt my app connect to the Firestore database as it should? Wondering if anyone could help me out. I have spent the last 2 hours trying to fix an issue. However i cannot work it out and cannot find the answer! So every sorry if this is a repeated question. Right, My Issue. I am creating a simple sign in with Firebase auth, and then the additonal details i need are then being stored in the firestore for convenience. I have ran a log of the lead up to and after the db connections and for whatever reason its just not having any of it. The listeners are...