Loading image from DB in Activity OnCreate() with kotlin coroutines Android Trying to set background image from SQLite with Room in OnCreate(): override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) ... //Some "findById" etc ... CoroutineScope(IO).launch { val curPicture = AppDatabase.INSTANCE!!.imageDao().getImage(GameState.curLocation.picId!!) withContext(Main) { val bmp = BitmapFactory.decodeByteArray(curPicture.image, 0, curPicture.image!!.size)...

AutoCompleteTextView (setText) and fragment.detach().attach() I make app and add this function change language. I change language in fragment from MainActivity used ... val locale = Locale("es") Locale.setDefault(locale) val configuration = Configuration() configuration.locale = locale this.resources.updateConfiguration(configuration, null) ... supportFragmentManager.beginTransaction(). detach(scaleFragment).attach(scaleFragment).commit ... in fragment CreateView ... val listSpeed =...

Accessing Whatsapp Media folder in Android 11 how i can get images and video from whatsapp folder in external storage via scoped storage

How to use lambdas together with functional interfaces and directly assign lambda to var in kotlin I have this code: package org.medianik.kotlindoc fun main(){ val creator:Creatable = toCreatable(::Created)// Ok. Compiles, and works fine val creator1:Creatable = ::Created // Compilation error val creator2:Creatable = ::Created as Creatable // ok enough to compile, but there is runtime exception val c = creator.create(5) val creator3:Creatable = toCreatable(c::doSmth1) // Ok. Compiles, works fine val creator4:Creatable = c::doSmth1 // Compilation error val...

NodeList for loop in reverse order? I'm trying to parse xml in reverse order, but can't get it to work. Here's the working code in the right order: val nodeList = doc.getElementsByTagName("mytag") for (i in 0 until nodeList.length) { // do something } The following code causes an exception: val nodeList = doc.getElementsByTagName("mytag") for (i in nodeList.length downTo 0) { // do something } The following code works but leaves out the last item: val nodeList = doc.getElementsByTagName("mytag") for (i in...

IllegalStateException when stringResource() is used while building with Jetpack Compose Text(buildAnnotatedString { withStyle(style = SpanStyle(color = Color.Red)) { append(stringResource(id = R.string.pre_style)) } append(" ") withStyle(style = SpanStyle(fontWeight = FontWeight.Bold, color = Color.Blue)) { //Not able to use string resource here append(stringResource(id = R.string.test_text)) //Works...

How to change passed parameter type in Android studio I am new in Mobile Development. I am trying to pass parameters from one Activity to another with intent. But in the second activity I cannot use it because of the Type miss-match. I get it as String but I should use it as TextView. Can you please say where I did mistake? First Activity class ShowProfileActivity : AppCompatActivity() { private lateinit var fullnameTv: TextView private lateinit var nicknameTv: TextView private lateinit var locationTv: TextView private lateinit...

RxJava 3 Mapper I am using RxJava3 in my project and I can't write a request, I've been wrestling my head for several hours. I have List and have a function that returns a Single by Stream, i want to get a Single, fun getMockTopics(streamId: Long): Single { return Single.just(listOf(Topic(1, ""))) } typealias SteamTopics = Map override fun getTopics(streams: List): Single { return Observable.fromCallable { streams.filterNotNull() }.flatMapIterable { it } .map { stream ->...

LiveData Transformations with Flow Has I read more about Flow I'm starting to think that you can replace MutableLiveData switchMap pattern with something similiar with flow. You can replace LiveData observation with flow by implementing something like this but I'm unable to imagine how to replace the switchMap part. By switchMap pattern I mean this... val mutableLiveData: MutableLiveData =...

Custom print service plugin for android I couldn't find any open source projects for Custom Print Service Plugin except https://github.com/pelya/android-print-plugin-cups for this question! (That project was such a hard thing for me to deal with! working with Debian and shell and other stuff!) Is there an easier way to program such plugin? How can i do that? This app should be something like <a...

Jitpack with Bitbucket (creating android library on bitbucket) I want to create android library and put it on bitbucket. ALl materials and tutorials I found are working with github. But requirement from my clients is BITBUCKET. I tried to login on JITPACK with bitbucket but it looks like it doesn't accept nothing except github accounts. I succeded in creating library with github, but this is not what I need. I also don't see create/draft release option in bitbucket (which github has) and which is important for creating library. This is example which I...

laravel setEmailAttribute model equivalent in spring boot kotlin I am a laravel developer but now I am learning spring boot with kotlin. I want to make email saved to database is transformed to lower case. How do I make setter like setEmailAttribute in spring boot entity? Here is my entity in spring boot apps package com.example.auth.entity import javax.persistence.* @Entity @Table(name = "users") open class User( @Id @GeneratedValue(strategy = GenerationType.IDENTITY) open var id: Int? = null, @Column open var name: String? = null,...

how to fix //DynamiteModule: Considering local module com.google.android.gms.maps_dynamite:0 problem I/DynamiteModule: Considering local module com.google.android.gms.maps_dynamite:0 and remote module com.google.android.gms.maps_dynamite:203112999

Listener for data in RecyclerView Is there a way to get a current number of items in RecyclerView every time when notifyDataSetChanged() method is called? I'd like to use something like LiveData, so i can observe changes in RecyclerView.

how can I solve this issue in android studio kotlin? How can add a code for edit text field and a button in custom dialog box in a project? The 'kotlin-android-extensions' Gradle plugin is deprecated. Please use this migration guide (https://goo.gle/kotlin-android-extensions-deprecation) to start working with View Binding (https://developer.android.com/topic/libraries/view-binding) and the 'kotlin-parcelize' plugin. <a...

OnClickListener for multiple buttons does not work I searched here fo a solution and on google but it doesn't work for me and I can't understand why. I did everything like in this solution: Multiple OnClickListener in Kotlin XML Code: MainActivity.kt: package com.example.test import android.os.Bundle import android.view.View import android.widget.Toast import...

How can i overlap list item on each other in android jetpack compose? I want to implement this ui. How can i overlap post list item on each other in android jetpack compose?

Using Kotlin/JS alongside regular JavaScript instead of as replacement Rather than writing a complete web app in Kotlin, I would like to write only a core logic in Kotlin and use regular JavaScript for views. I guess I would need to somehow compile Kotlin/JS to npm package and then use it as a library in a Webpack project, however I can't find any guides on this topic. Any ideas?

How to draw a Button like rectangle with text in Android Canvas? In Android app , I want to draw a button in canvas , like the image exactly the below image I tried some stack overflow answers but can't get the exact output , particularly the light shadow below . My worst code is below val corners = floatArrayOf( 80f, 80f, // Top left radius in px 80f, 80f, // Top right radius in px 0f, 0f, // Bottom right radius in...

How to create reusable steps in BehaviorSpec I am still new to Kotlin and Kotest and I am struggling of finding a way to create a BDD style of test. My problem is how the framework enables to create reusable Given step. For example: class KotestTest1 : BehaviorSpec({ given("State A") { // Verify the State A exists println("Verify the State A exists") `when`("Action A") { // Execute Action A println("Execute Action A") then("State => A1") { // Verify the...

Call function after navigateUp or dismissing DialogFragment Hi I'm using function loadExercises() in my app for setting data to recyclerview. For every part of my app it's working fine. But in one specific part I need two specific things: Refresh view after DialogFragment dismiss() method. (I'm updating exercise time in that dialog. This method is working fine and does what it should do.) Refresh this list after navigateUp() called in AddExerciseToTrainingFragment. This fragment is another recyclerview full of exercises. On click it shows...

Where and how to implement thread - Kotlin I have a simple app that starts a foreground service on the click of a button and in the foreground service there is a media player that plays a music stream from the internet. The service and therefor the media player is being handled on the main thread and is causing a app unresponsive popup. My questions are as follows: 1, I know I need to put the some work in a thread to prevent the unresponsive message... I am unsure where and how this is best done. 2, when the button on the main...

how to access the extra data in the returned intent and update TextView in Android I am trying to update the value in the First activity. For this. I have passed parameters from first Activity to second with intent and update text input. Now I want to pass the updated value to the first Activity and update the specific value. I try to send data inside saveButton onClick with setResult() method. And get value in FirstActivity with onActivityResult() method. But it does not update value. Can you please check where I did mistake? First Activity class ShowProfileActivity :...

Moshi: Why no need to register generated JsonAdapters? I'm using Moshi and its CodeGen to generate Kotlin JsonAdaptors automatically for Retrofit's ConvertorFactory. I add @JsonClass(generateAdapter = true) on top of my data classes and after make project all adapters will be available. Then I define MoshiConverterFactory.create(moshi) in retrofit builder like this: val moshi = Moshi.Builder().build() Retrofit.Builder() .baseUrl(/* baseUrl */) .client(/*...

How to use Image URI with Input Stream - upload image with OkHttp I am kind of new to Android and I have been trying to figure this out for days now and I can't get it working. I need a user to pick an image from the gallery and I need to upload the image via OkHttp to the server. I retrieve URI after the user selects an image from the gallery with this code: override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) { super.onActivityResult(requestCode, resultCode, data) if(resultCode == Activity.RESULT_OK &&...

Getting An Error : Execution failed for task ':app:lintVitalRelease' Why is this Error Getting me While Generating a Signed Apk in Kotlin? Anyone who knows the solution please send an answer. Logcat Error: Execution failed for task 'applintVitalRelease'. Lint found fatal errors while assembling a release target. I'm adding build.gradle file. I don't know what's wrong with my code, So please anyone know solution please answer. Build.gradle apply plugin: 'com.android.application' apply plugin: 'kotlin-android' apply plugin: 'kotlin-android-extensions'...

Android studio custom button style padding issues After 4 months of being inactive i realized that there are some changes. Now when you make a new button it is purple and has some padding defined. Managed to kill the purple color by editing the theme, but i still have issues with padding. When i make a new button, by default it has left and right padding 16dp, and top and bottom 4. I would not like to be forced to change every single new button to 0 padding.. i have 2 options in mind. To set padding in custom button xml:...

What's the Java equivalent of this Kotlin declaration? But could someone tell me what this means in Java? var doOnAppCouldNotBeFrozen: ((Context) -> Unit)? = null I'm new to Kotlin obviously. Yes I did search far and wide and I think this is a "function type" but I'm not sure. Is it a method or a variable? I know that Unit means void so then is it a method that returns void? The only way I can understand what it means is if I can see how it's written in Java (without the question mark after Unit).

Is there a simple way to adjust UTC time to Local time including DST? I am writing a Kotlin tide prediction app that predicts high and low tides for places in Britain and France. The calculations of effects of the sun and the moon are in UTC. But I would like to show results in the time automatically adjusted for the users location and the daylight-saving factor in force. I hoped to use :- var deltaH = LocalDate.now().getTimezoneOffset but I get "getTimezoneOffset"as an unresolved reference. I have imported java.time.* I have tried extracting the hours...

How do I save a csv string to a file and share it with the send intent? I have a function that generates a csv string, getSummaryCsvString(). I want to save it to a file, and share it with a send intent so the user can email the file, save it to Google Drive, etc. But when I try and do this, I get this error: Writing csv summary failed: java.io.FileNotFoundException: summary.csv: open failed: EROFS (Read-only file system) The relevant code: override fun onOptionsItemSelected(item: MenuItem) = when (item.itemId) { R.id.summaryExportBtn -> {...