Need to set portrait only for mobile devices I try using the following code. if (screenLayoutSize == Configuration.SCREENLAYOUT_SIZE_SMALL || screenLayoutSize == Configuration.SCREENLAYOUT_SIZE_NORMAL) { requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT } code is woking fine. build successfully. But there is an error on requestedOrientation and it says "You should not lock orientation of your activities, so that you can support good user experience for any device or orientation." <a...

Expand Bottom sheet dialog to open a new fragment screen I'm implementing a bottom sheet dialog in a fragment , and i want to open a new fragment when expanding it to the full screen height like this : https://miro.medium.com/max/608/1*lZTBcYUYb8eB65x_7bWbjw.gif

Unable to get the id in ExposedDropDownMenu ArrayAdapter I was able to display a list if single element, but I also want to get the corresponding ID of the selected element in the dropdown. data class ChannelCategory( val channelCategory: String, val channelCategory_InternalId: String ) private fun channelCategoryDropDown(it: List){ val values = ArrayList() for (x in it){ values.add(x.channelCategory) } val adapter = ArrayAdapter(requireActivity(), R.layout.add_cutomer_list_items, values)...

After clicking the random button,app has stopped Following this to build a random generator app. Link But when I click the random button, app has stopped. But it is not showing any errors. Clicking random button goes to second fragemt and passes the argument.

How to call a query in web app using intellij and kotlin? I need to show in web app the queries under name, ocid, region and status. How do I call the queries from database? When I click the selectedCompartment it must call all the queries and show it in web app. How do I do that? I only run the web app through localhost:8080. help me please. Below are my codes. Compute.graphql query compute($instanceId: String!){ compute(instanceId: $instanceId){ name ocid region status } }...

Save access token in Kotlin Object in Android I'm building an android app with kotlin. I load my access token from Room (android local DB) in main activity. And with RxJava2, I get the access token throw ViewModel. And I have a Kotlin Object that I can save Token inside. The Reason I use Kotlin Object is to use the access token simply, not load token from Room every time I need it. So, this is the code about that //In Main Activity, onCreate viewModel.token.observe(this, Observer { TokenObject.token = it // type of it is MyToken...

How to post just Array in retrofit Body for Android In body I want to send just an ArrayList just as below ["item1","item2"] And my API call is as below @POST("{userId}/items") fun postUpdateItems( @Path ("registrationId") registrationId: String, @Header(NetworkUtils.CONTENT_TYPE) contentType: String = NetworkUtils.CONTENT_TYPE_PARAMS, @Body body: List ): Observable But it does not work. I got the below error. I tried ArrayList Array None of them worked for me. java.lang.IllegalArgumentException: Non-body HTTP method cannot...

Android studio display errors. but build successfully and work fine Unresolved reference on CalculationsUtils val t5String = timeStringFromSeconds(CalculationsUtils.t5!!.toInt()) But build and run successfully. CalculationsUtils is a kotlin object.

fragment singleton doesn't have meaning? I have two fragment using lazy holder singleton pattern. assume that upper fragment is A. When I change fragment A to A, I can get the result what I want, that is no change in A fragment. When Changing A to B, A is detached, and B is attached. changing B to A is same. As a result, singleton fragment create view many times. As far as I've understood, only singleton is working when A to A. But I found one something strange. using singleton fragment A, A fragment recyclerview position remains...

: kotlin.UninitializedPropertyAccessException: lateinit property manager has not been initialized I am developing news and I am getting following nullpointexception java.lang.RuntimeException: Unable to start activity ComponentInfo{yodgorbek.komilov.musobaqayangiliklari/yodgorbek.komilov.musobaqayangiliklari.ui.WelcomeActivity}: kotlin.UninitializedPropertyAccessException: lateinit property manager has not been initialized at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2976) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3113) at...

Parallel IO requests with Kotlin Flow, Coroutines and NOT suspend function I run my Netty based Kotlin application with Spring Boot and WebFlux. The details are as follows: Java 11; Kotlin 1.3.61; Spring Boot 2.2.5.RELEASE; Spring Vault Core 2.2.2.RELEASE. I get a file on the web layer. WebFlux creates a Part (org.springframework.http.codec.multipart) out of it. The data is stored in the Project Reactor's Flux in the Part as a stream of DataBuffer chunks of size 4Kb: Flux content(); Due to comply with the consistency of frameworks I transform the Flux to a...

fill array with different objects from database I have an array and try to fill this array with objects from my database. Up until now this way was working var array: ArrayList() val itemsToFillArray: List = documentSnapshots.toObjects(MyObject::class.java) array.addAll(itemsToFillArray) But my problem now is, that I have multiple objects in my database and not just MyObject. I already gave my objects an Interface and tried it this way, but its not working. How can I retrieve different objects from my database and store them in my array?

Does `Sequence&lt;T&gt;.all` loop remaining elements in case it runs into an element which doesn't match the predicate? Sequence.all returns true when all elements match the given predicate. inline fun Sequence.all( predicate: (T) -> Boolean ): Boolean Let's say. It encounters an element which doesn't match the predicate before reaching to the last element. I think it doesn't need to loop to the end and can return false from there. Does it loop through all elements even in case?

Why Coroutine is behaving strangely in returning results? I have two methods say A and B , both are returning results from Coroutine Scope and both are implemented the same way but one is working fine and other one is giving exception. Why they are behaving strangely? Here is my code of A method fun addCartToFirebase(itemId: String,cart: Basket) : Pair?{ var pair:Pair? = null CoroutineScope(IO).launch { databaseReference.child("Cart").child("Anonymous").child(itemId).setValue(cart).addOnSuccessListener { pair =...

Android - Kotlin : Instantiate an object once inside the class that extends application and use it in all activities My goal would be to instantiate an object inside the class that extends the Application class and then use it statically in all activities, es: Suppose we have a class to be used statically or with the singleton pattern class MyObject( arg1: Any){ fun OneFunction(){ ..... } } Suppose we have declared the application with the name of App in the Manifest (so as to create the App class that extends Application ()) class App : Application(){ override fun onCreate() {...

Thymeleaf with Kotlin: Call a Kotlin Method inside html and reload. Is that possible? for my study course I have to create a REST Micro-Service, so I'm a total beginner and do not have much time to learn before. I decided to use Spring with Thymeleaf and Kotlin to create it. Now I have a problem. I need to call a custom Kotlin function. I have a controller, with a function that returns the html and adds the model attributes: @RequestMapping(value = ["/catalog"], method = [RequestMethod.GET]) fun catalog(model: Model): String { model.addAttribute("articles",...

Android Kotlin Enum issue with returning String in toString() method [duplicate] I am trying to override toString() method in enum and return, but it is not working, What mistake am I making? enum class PlayBack(recordingType: String) { LIVE("live"), RECORDED("recorded") override fun toString(): String { return recordingType } }

Make a feature to verify date and time of the device like WhatsApp I am trying to implement a feature in my android app which checks the date and time of the device and verifies if it is correct network time or not similar to what WhatsApp does. I don't know how to make it. Could anyone provide some useful links or suggestions on this. Thanks in advance.

TabLayout onTabSelected is not called if I select Tab programatically, but UI is changing I want to implement simple TabLayout with 2 Tabs. But I noticed if I select tab programmatically, it will not trigger onTabSelected, only if I tap on it in UI. Any suggestions how to trigger it? tabs.addOnTabSelectedListener(object : TabLayout.OnTabSelectedListener { override fun onTabSelected(tab: TabLayout.Tab) { lastSelected = tab.position startFragment() } override fun onTabUnselected(tab:...

When i try to git push heroku i get an error Error im getting is below, this happens when i do "git push heroku master" Enumerating objects: 262, done. Counting objects: 100% (262/262), done. Delta compression using up to 4 threads Compressing objects: 100% (232/232), done. Writing objects: 100% (262/262), 316.61 KiB | 4.34 MiB/s, done. Total 262 (delta 34), reused 0 (delta 0), pack-reused 0 remote: Compressing source files... done. remote: Building source: remote: remote: -----> Gradle app detected remote: -----> Installing JDK 1.8......

Firebase Crashlytics reports This issue contains servel questions for a "new Firebase Crashlytics user" First of all till not long ago, I've used Fabric for crash reports. after migrating Fabric to Firebase Crashlytics, a few issues raised. 1) Difference in 'Crash-free users' from Fabric to Firebase Crashlytics, while Fabric shows 99%+ crash free users, FB-Crashlytics shows around 60% crash free users. how come it doesn't give the same result? 2) FB Crashlytics NOT reporting regard the specific object/field name...

In a gradle multiprojet, how can I pass parameteres to an extension inside subprojects{...} Currently I have something like this in my root build.gradle.kts as part of my gradle-multiproject plugins { id("...release...") version ..... } subprojects { repositories { mavenCentral() jcenter() maven( "...release..") } release { ... } } But I'm suffering a: What went wrong: Extension with name 'release' does not exist. Currently registered extension names: [ext] Am wondering if the only alternative is dupliacte this...

Coil Image Loader : Cache Bitmap with a key I am using Coil Image loading library. My Problem: I am not getting image Url from backend, rather I am getting JPEG encoded String with its name / key. What I was wondering is if there is any inbuilt support for caching bitmap with respect to a key. Is it possible? If not what might be the best way to solve my issue? Thanks in advance.

Databinding ANTLR Tool version 4.7.1 used for code generation does not match the current runtime version 4.5 Someone knows how to fix this ANTLR Tool version 4.7.1 used for code generation does not match the current runtime version 4.5 ? I tried this "solution" but didn't work for me configurations.all() { resolutionStrategy.force "org.antlrantlr4 runtime4.5.3" resolutionStrategy.force "org.antlrantlr4 tool4.5.3" } Dependecies I use: mplementation "org.jetbrains.kotlinkotlin stdlib jdk7$kotlinVersion" implementation "androidx.appcompatappcompat$supportVersion"...

how to fix subscribeOn (io.reactivex.Schedular) in Flowable cannot be applied to (rx.scheduler) I am trying to do Room database operations using Rx java Flowable, but I think there is an issue with my imports but not sure what is the actual problem. Error I get is UserDao import io.reactivex.Flowable @Dao interface UserDao { @Query("SELECT * FROM user") fun getAllUsers(): Flowable @Insert fun insertUser(user: User): Long } Presenter - where I am trying to access database is import...

kotlin - type inference and type mismatch when updating kotlin version I'm having some difficulties trying to understand what is going on the following code: fun helperMethodNameA(someId: String, rules: RulesObject) { val content = JsonNodeFactory.instance.arrayNode().apply { // A & B add(JsonNodeFactory.instance.objectNode().apply { set("body", JsonNodeFactory.instance.objectNode().apply { // C set("text", JsonNodeFactory.instance.objectNode().apply { // D set("value",...

Kotlin|Tornadofx: How to open new fxml screen on mouse click in another fxml screen I have a very simple task but can't do it. I have Kotlin|Tornadofx app. I open the fxml screen: class MainView : View() { override val root : VBox by fxml("/Screen 1.fxml") } There is a button in Screen1.fxml. I need the app to open another screen (Screen2.fxml) on button pressed in Screen1.fxml. I got stuck by this. Only a function call is available from Screen1.fxml by means of onAction="#FunctiondefinedinMainView". But swapping views in MainView is only available by button("Go...

Check if lockscreen is currently displayed I have a problem with lockscreen. Sometimes when I sleep the phone and then immediately after wake it up, onResume is called and then onPause which messes up my app. I thought that I could do a workaround and if lockscreen is displayed then ignore the logic that I have in onPause but I can't figure out how to check it. I tried to use PowerManger and KeyguardManager like suggested here but it didn't work. I also tried to check if...

Android build keeps failing with Room and Kapt with failed task :app:kaptDebugKotlin My Android build keeps failing after enabling kapt for Room, but to my knowledge I configured everything the right way and I really can't seem to find the problem. My Database Classes: DebtDatabase.kt package com.eliasball.debtmanager.data.db import android.content.Context import androidx.room.Database import androidx.room.Room import androidx.room.RoomDatabase import com.eliasball.debtmanager.data.db.entities.Debt @Database( entities = [Debt::class], version = 1 ) abstract...

How to align text with Start and End both in TextView android? This is what i want. And this is what i have. In the above pictures we can see that the lines the paragraph is starting from the most start of the page (aligned start). and in the first picture the lines of paragraph also end of the page (aligned end). so this is i want with my textView, showing in the second picture but i don't know what...