Volley RequestQueue is not working (Kotlin) I have a LoginActivity that has a very simple layout with 2 EditText's (username and password) and 1 Button (login button). I want to perform a POST request to a server when the login button is pressed. I am using Volley. Here's the code class LoginActivity : AppCompatActivity() { private lateinit var loginButton: Button private lateinit var loginNameEditText: EditText private lateinit var passwordEditText: EditText private lateinit var queue: RequestQueue override fun...

How can I show external setting in my app like Android Auto? I'm developing a kotlin app and I need to implement a screen like "Other app settings" that you can find to the bottom of "App informations". I founded it in "Android Auto" and i wonder how i'll can do it. Thanks

Kotlin. How to get specific subclass of sealed class? I'm using kotlin sealed class. And I need to retrieve specific subclass. My sealed class: sealed class Course( val type: Type ) { data class ProgrammingCourse(val name: String, val detail: String) : Course(Type.PROGRAMMING) object LanguageCourse: Course(Type.LANGUAGE) ..... } For example I have function which can return Course: fun getCourse(): Course { if(...) return Course.ProgrammingCourse("test", "test") else return Course.LanguageCourse } In...

Retrieving count of documents from firebase and adding a map asynchronously I'm developing and Android App with jetpack compose and I have a lazyColumn that its every row has items in it. I want to show item count for each row in my LazyColumn. I tried to write a counter function and it is almost working but not properly. It shows item count as null in starting app and when i clicked a row, go to other screen and turn back, then it is showing actual numbers. Counter Function in ViewModel: fun countOfAnalyze(currentPairId: String) =...

How create own callback I can't create a callback, I create interface interface OnClick { fun click() } added it to your fragment xml, and called the method ... and override method in my fragment override fun click() { Log.d("test","123") } but it doesn't work, how can i fix it?

What is the fastest way to encode a bytebuffer image in jpg format? I use CameraX to capture an image from the camera using ImageAnalysis. The image is received as 3 ByteBuffers (respectively for the Y, U and V planes). I only keep the Y plane ByteBuffer. The other 2 are discarded. I would like to reduce the size of this ByteBuffer, for example by encoding it in the jpg format. Is...

how to update email in firebase authentication i wrote a code which update- email in realtime database but not updating in Authentication i wrote a code for updating in authentication and realtime database but not updating in authentication what to do for the authentication updation how to update the email in the authentication also along with realtime database how to implement this kindly guide to achieve the output private lateinit var dbRef: DatabaseReference private lateinit var firebaseAuth: FirebaseAuth override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState)...

How to correctly define this path for retfrofit in android? Android newb. Using this url as an example: https://api.midnite.com/v0/matches/upcoming I am having trouble getting past a nullpointer exception in my adapter, not sure what is causing the problem. Possibly the way I am structuring the url path in the retrofit service? Here is the model class: data class Data( @SerializedName("away_team") var awayTeam: String? = null, @SerializedName("away_team_id") var...

i have an error while using roomDB in kotlin im learning using room db in kotlin i have written all codes similar to my learning course step by step except one : in my ViewModeFactory class , i couldn't put the safe call operator in here , cause an error whould have shown :(in below : safe call operator must be put after ViewModel) override fun create(modelClass: Class): T {} when i don't put any safe call operator , the error disappears . but when i run my app , this error will apear : error: Type of the parameter must be a class...

GenericDialog did not return a View from onCreateView() or this was called before onCreateView() I was developing an app in kotlin, and I try to make a custom dialog, which extends of my parent class BaseDialogFragment, and when I try to instace my GenericDialog I get the following error: E/AndroidRuntime: FATAL EXCEPTION: main Process: es.renaultbank.andr, PID: 21498 java.lang.IllegalStateException: Fragment GenericDialog{a0c2f1e} (ffc56cd1-3856-466f-8705-c66209c24963 tag=sucess_otp_dialog) did not return a View from onCreateView() or this was called before onCreateView()....

How to show particular number of item at a time in smarteist image slider github I created the image slider using smarteist image slider github library and it's working fine. Expected To show 3 items at a time before slide. what I had done val partner_recyclerView: SliderView = findViewById(R.id.partnership_slider) var partnerAdapter: PartnerAdapter = PartnerAdapter(partnerList) partner_recyclerView.autoCycleDirection = SliderView.LAYOUT_DIRECTION_LTR partner_recyclerView.setSliderAdapter(partnerAdapter) partner_recyclerView.scrollTimeInSec = 3...

Android-Studio, EditText inside RecyclerView inside CustomDialog focus issue I have a problem with the focus. Everytime I click in the EditText I can write 1 character and then it loses the focus. I´ve searched and I found some solutions if my EditText is inside a RecyclerView, but those don´t work with my project. I suspect that this is because my EditText is inside a RecyclerView which is inside a CustomDialog. If someone know how to solve this it would be great :D

Fatal Exception: java.lang.UnsupportedOperationException: JsonNull for (i in 0 until jsonArray!!.size()) { val stringCode: JsonObject? = jsonArray.get(i).getAsJsonObject() singleUpdateArrayList!!.add( SingleUpdateResp( stringCode!!.get(TagName.AIRWAYBILLNO).getAsString(), stringCode.get(NotificationCompat.CATEGORY_STATUS).getAsString(), stringCode.get(DatabaseHandler.Companion.KEY_SYNC).getAsString() ) ) }

Is it GOOD to put Custom Dialog inside the base fragment android kotlin w.r.t perfomance,etc I'm creating custom dialog in some Fragments but I came up with a base fragment to use there and then just call from CHILD Fragment. For instance, I've 10 fragments out of which just 3 are using that. Does it good to move dialogs with base fragment and I just no need to recreate it. Anything that affects here will be good to know for me like cohesion, coupling, performance, architecture etc

How to align items in separate rows in Compose? I want to create a Compose view that looks something like this: |-------------------------------------------| | "Dynamic text" Image "Text " | |-------------------------------------------| | "Dynamic text 2" Image "Text" | |-------------------------------------------| Logical way to do it would be to add two Rows inside a Column. Problematic part is that Images inside those Rows must always align while the first text elements length can change....

Instrumented Test throws AssertionError but succeeds anyways I have the following simple instrumented ViewModel test: @RunWith(AndroidJUnit4::class) class LoginViewModelInstrumentedTest { @Test fun loginViewModel_getOrAwait_success() { val loginViewModel = get(LoginViewModel::class.java) GlobalScope.launch(Dispatchers.Main) { val result = loginViewModel.wasLoginSuccessful.getOrAwaitValue() assertTrue(result) } } } getOrAwaitValue definition: @VisibleForTesting(otherwise =...

Centring 3D model in SceneView not AR I have a view that loads a 3D model with SceneView. The problem is that I have added a custom class for model rotation, but this causes the model to be displaced instead of being centered on the screen. class DragRotationController(private val transformableNode: DragTransformableNode, gestureRecognizer: DragGestureRecognizer ) : BaseTransformationController(transformableNode, gestureRecognizer) { companion object { private const val initialLat =...

Compilation with Kotlin compile daemon was not successful java.rmi.MarshalException: error marshalling arguments; I have a project that works with Kotlin 1.4.21 and I wanted to integrate Compose into it. When I added the compose dependencies, and because the compose libraries use a higher version of Kotlin, I upgrade the version to 1.5.30. When I did that and tried to build my project, I started seeing the following error: Caused by: java.net.SocketException: Software caused connection abort: socket write error And here is the top part of the stacktrace: Compilation with Kotlin compile daemon was not...

NativeAdView does not work. What is the problem, how to smartcast types? NativeAdView does not work. What is the problem, how to smartcast types? ImageAdapter.kt: (192, 13): Smart cast to 'MediaView!' is impossible, because 'adView.mediaView' is a mutable property that could have been changed by this time ImageAdapter.kt: (192, 46): Type mismatch: inferred type is MediaContent? but MediaContent was expected ImageAdapter.kt: (194, 17): Smart cast to 'View!' is impossible, because 'adView.bodyView' is a mutable property that could have been changed by this time...

Kotlin: LayoutInflate from another layout file I want to findViewById() in Kotlin from another layout file, but firstly I need to inflate the view of that file, right? val newView = LayoutInflater.from().inflate(R.layout.fragment_home, null) I'm not sure what to put in the from brackets, because apparently my parent is null, so I cant use parent.context. This is my setContentViewPart: binding = ActivityMainBinding.inflate(layoutInflater) setContentView(binding.root) What can I put in .from(), or is there any other method to...

PagingData flow does not collect until the first change I have a chat application and i collect the messages from Room Database ONLY (not from Internet resource). I use the dependencies def room_version = "2.5.0-alpha02" implementation "androidx.room:room-runtime:$room_version" implementation "androidx.room:room-ktx:$room_version" implementation "androidx.room:room-paging:$room_version" kapt "androidx.room:room-compiler:$room_version" implementation "androidx.paging😛aging-runtime-ktx:3.1.1" From the Database i have the query @Transaction...

java.lang.InstantiationError when mocking method with interface as generic type in Kotlin using Mockk I am using Kotlin 1.7.10 and Mockk 1.12.4 and I have a factory method in the following spring bean class: @Service class DataSynchronizationManagerFactoryService( private val platformTransactionManager: PlatformTransactionManager ) { fun constructDataSynchronisationManager( processedEntityType: Class, repository: R, dataLoaderAndTransformer: DataLoaderAndTransformer ): DataSynchronisationManager { return DataSynchronisationManager(...

Micronaut Reactive Using @Error with ReactorHttpClient I have an api with 2 layers Controller and Service with Micronaut,Kotlin & Project Reactor. This application needs to handle requests in non-blocking manner. I have a Post function makePayment method as below fun makePayment(payment: Payment):Mono in class PaymentController This calls a service class PaymentService which also has the same function as above. This service internally uses io.micronaut.reactor.http.client.ReactorHttpClient to make the payment with Bank. What is the right way...

How to apply canonicalization before signing JSON-LD Verifiable Credential? I want to sign Verifiable Credential in JSON structure with Linked Data (JSON-LD) like below: { "@context":[ "https://www.w3.org/2018/credentials/v1", "https://w3id.org/security/bbs/v1" ], "id":"1234", "type":[ "VerifiableCredential" ], "issuer":"exampleIssuer", "validFrom":"2022-06-30T00:00:00Z+01:00", "expirationDate":"2022-07-30T00:00:00Z+01:00", "credentialSubject":{ "customerId":"123456", "name":"Test User",...

Allow user to select SQLite record from list of fields This is my first attempt at writing an android app in Kotlin and I need a little help. My app creates an SQLite db called 'BOPA_record' with two colums 'TOPIC_COL' and 'BOPA_COL'. When two EditText fields are filled, the user clicks 'save' and the entries are written to the table. This all works. What I want now is a way to show the user the list of previous entries in the TOPIC_COL, when they click a button, and when they click a topic the record is displayed. I've tried a few methods but I...

How to put custom Gradle plugins on an another projects build classpath? I have a published gradle plugin which looks something like this: |__root | | | | | |__java | | |__SomeJavaClass.java | | |__SomeJavaClass2.java | | | |__kotlin | |__MyPluginClass.kts | |__MyTaskClass.kts | |__Utils.kts I would like to include this plugin as a project in my multi project build instead of publishing it to a repo for easier developement. This plugin has 3 Kotlin files Project A is using. MyPluginClass.kts has my...

Android Kotlin: Having a global Context object for all activities (best practice) I have a global app settings class as follows: class AppSettings : MultiDexApplication() { override fun onCreate() { super.onCreate() instance = this resourses = applicationContext.resources outputPathCache = cacheDir.absolutePath } companion object { lateinit var instance: AppSettings private set val context: Context get() { return activityContext.get()!! } lateinit var activityContext:...

How to set width, height in view Jetpack compose Hey I am started learning Jetpack compose. I am trying to find the documentation regarding how to set width, height in compose. But I didn't find the solution. I know in xml we use MATCH_PARENT, WRAP_CONTENT and what should I use in the compose? I tried to search google but it didn't understand when should I want to use this Stack Overflow 1, Stack Overflow 2. Can someone...

Why onCreate Method not called in MainActivity of Flutter App? [duplicate] I am developing a app in Flutter with Flutter Project Embedding v2 In the Android project, in the MainActivty.kt which extends FlutterActivity, none of the lifecycle methods called. Why ? The MainActivity added in manifest with launcher intent but still it not working at all Even the breakpoints set in the MainActivity not called Why this weird issue ? Please check this gist : <a href="https://gist.github.com/RageshAntony/2d4b1de4010304803b2136e7df3093de" rel="nofollow...