Where to Cancel Coroutine Job's in View? i am using Coroutine in View's(Custom View) and these view's are added to a recycler view. Most of the Calculation(complex and long) i am running on a coroutine scopeIO and updating view on scopeMain. But when these view's are added to the Recycler View it work's perfectly but as i scroll fast then job's are running in the background even for the view's which are not visible anymore. I am not sure where to cancel the Job. Most of the sample code i have seen are coroutine in activity where...

How do I code a Rating Bar in Kotlin using Firestore? I am trying to retrieve user ratings from my Firestore and have it stored as a double. I don't know how to code it into my ViewHolder to show my rating. Please help I can't find anything online in Kotlin to help code. internal class UserViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) { // Hold view refs private val usernameTextView: TextView = itemView.usernameTextView private val profileUserImage: CircleImageView = itemView.profileUserImage...

How to make an aplication appropriate google permission? I used READ_CALL_LOG and READ_CONTACTS permissions in my app and uploaded it to google play. However, I received a response from Google Play Console that your application does not comply with the Goole Play Privacy Policy. Issue: Violation of Permissions policy After reviewing your app, we found that it doesn’t qualify to use the requested permissions for the following reason(s): Ineligible use case It looks like you are using SMS/Call Log permissions to support an invalid use case:...

okhttp3 moshi - JsonAdapter runtime issue I'm trying to run a sample code that uses okhttp3 to make Rest api calls. MoshiJsonConvertor.kt: import com.squareup.moshi.JsonClass import com.squareup.moshi.Moshi import okhttp3.OkHttpClient import okhttp3.Request import java.io.IOException class MoshiJsonConvertor { private val client = OkHttpClient() private val moshi = Moshi.Builder().build() private val gistJsonAdapter = moshi.adapter(Gist::class.java) fun run() { val request = Request.Builder()...

Using multiple path in @ComponentScan is not working I'm having a problem using multiple path in component scan. I tried the solution from here How to scan multiple paths using the @ComponentScan annotation? but it gives me error. It says Unexpected tokens (Use ';' to separate expressions on the same line) I'm using Kotlin and Intellij IDE.

How to render custom 3D shapes using ARCore in Android Studio? I'm new to ARCore and would like to know if there is a way to render custom 3D shapes such as Pyramids in runtime based on 3D coordinates.

Android Google Map Marker not repositioning correctly I am displaying a Google map in an Android application with two markers. On the onMapReady method everything works well, the map renders and the markers appear with the relevant bitmaps and information. I have even implemented a zoom boundary using the CameraUpdateFactory() function with LatLngBounds. Again, up to this point, everything works well and as expected. Here's the snippet: override fun onMapReady(googleMap: GoogleMap?) { myGoogleMap = googleMap myMapMarker =...

Please help me with onreponse error kotlin can someone help me what's wrong with this code ? I'm just new to this. im having a response error **val stringRequest = object : StringRequest(Request.Method.POST, EndPoints.URL_ADD_ARTIST, Response.Listener { response ->** try { val obj = JSONObject(response) Toast.makeText(applicationContext, obj.getString("message"), Toast.LENGTH_LONG).show() } catch (e: JSONException) {...

VectorDrawable cannot be cast to AnimationDrawable I trying to animate an imageView and this error came out. android.graphics.drawable.VectorDrawable cannot be cast to android.graphics.drawable.AnimationDrawable on this line val drawable: AnimationDrawable = viewHolder.items_expand_button.drawable as AnimationDrawable

Why can not use hex Int in kotlin method intArrayOf? I found a strange problem in Kotlin. I can assign a hexadecimal integer to an Int variable, just like: private val a = 0xFFFF0000 //works good but I can't use this hex integer in intArrayOf: private val array: IntArray = intArrayOf(0xFFFF0000) IDE prompts: the integer literal does not conform to the expected type Int. Does anyone know why? and is there anyway to use 0xFFFF0000 in intArrayof?

Extract numbers from a string kotlin if we using line replaceAll class string in java. it not run and not support in kotlin. so I suggest demo example, I hope it help var string = "vsdhfnmsdbvfuf121535435aewr" string.replace("[^0-9]".toRegex(), "")

Unresolved reference: FontAwesomeIconView - What library should I import? Following a Tornadofx tutorial, I am trying to use a function called FontAwesomeIconView() that is to be used to define a Fieldset. The problem is that I don't know what library to import in order to use FontAwesomeIconView. The tutorial I'm using is here: https://github.com/edvin/tornadofx/wiki/. I tried searching for information about FontAwesomeIconView but came up dry. The code used for this example is as...

How to save the instance of the fragment used in navigation architecture? I have 2 fragments . ExamFragment(say A)and ResultFragment(say B) . while moving from A to B and back to A , Fragment A gets reloaded? I don't want it to be reloaded. How can I do that? I am navigating with args in following way override fun result( enrollId: Long, text: String, extras: FragmentNavigator.Extras ) { var gradeId: Long = 0 val exam = examSpinner.selectedItem?.let { e -> e as ExamModel.Exam } when {...

How can I solve this error :Expected BEGIN_ARRAY but was BEGIN_OBJECT at line 1 column 2 path $ How can I solve this problem? I don't know about solve method. Check my code and help me plz. Please Ignore: It looks like your post is mostly code; please add some more details. It looks like your post is mostly code; please add some more details. It looks like your post is mostly code; please add some more details. It looks like your post is mostly code; please add some more details. It looks like your post is mostly code; please add some more details. It looks like your post is mostly...

Recycler item_view height is changing after first initialisation in android In recycler_view adapter class the following code is added for dynamically changing height of item_view override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): TaskListViewHolder { val itemView = LayoutInflater.from(parent.context).inflate(R.layout.task_item_new, parent, false) val vto = parentLayer!!.getViewTreeObserver() vto.addOnGlobalLayoutListener(object : ViewTreeObserver.OnGlobalLayoutListener { override fun onGlobalLayout() { if...

RxBus.Publish() throws OnErrorNotImplementedException I am using RxBusfor event passing from adapter class to fragment for specific subject RxBus.publish(RxBus.SUBJECT_TAX_AMOUNT_ENTERED_FOR_SAVING_OPTION, option) when I publish any event from adapter class it throws OnErrorNotImplementedException. How can I handle this?

Radio group filling from cursor The program requests a list of calendars from a user’s profile in Google.com. val root = inflater.inflate(R.layout.fragment_tab_settings, container, false) val projection = arrayOf( CalendarContract.Calendars._ID, // 0 CalendarContract.Calendars.ACCOUNT_NAME, // 1 CalendarContract.Calendars.CALENDAR_DISPLAY_NAME, // 2 CalendarContract.Calendars.OWNER_ACCOUNT // 3 ) val uri: Uri = CalendarContract.Calendars.CONTENT_URI var cur: Cursor? =...

Data Binding Compiler cannot find custom binding adapter provided I have made a binding adapter available statically inside my Fragment which basically change my button appearance from "Stop" to "Play" and vice-versa. companion object { @JvmStatic @BindingAdapter("playState") fun Button.setPlayState(item: UIState) { item.let { if (it.isPlaying) { setText("Stop") setBackgroundColor(ContextCompat.getColor(context, R.color.colorStop)) } else {...

App crashes in GooglePlay store but not when developing locally on emulators and physical devices After upgrading my app to a never version and using realm database, it crashes when downloaded from GooglePlay but never when I check it on physical devices or many emulators. What is wrong? Pls help. In my app I used StaticObject to wrap some realm configurations for different languages and inMemory real to keep track of selected object along all the app. problem: `java.lang.ExceptionInInitializerError: at pl.nanoid.atlasotoskopii.ui.Start.MainActivity.onCreate (20) at...

How to get result from mongo synchronously? I have an array of billers and the companies of these billers is stored in a separate collection. I need to traverse through the whole list of billers get the company information using the companyId stored in biller and add the company information to my response along with the biller info. Previously I did this using awaitResult but its soon to be deprecated and I want a better way for doing this. fun parseBillers(billers:JsonArray):JsonArray{ billers.forEach { biller -> biller...

Why is android studio not generating code for all the safe args? I am using safe-args to pass arguments from one fragment to the other. Android studio intermittently generates the fragmentArgs class with all the arguments. What I have tried, and does work, is altering the nav graph file, making the project, then undo those changes, and finally, make the project again. I expect that all the arguments will be found in the generated class, but that is not the case.

Unable to access file that I have saved in Flutter code from native Android Hi I have a problem with Flutter and Android native code. I save my file in flutter like this: Future _downloadAndOpen() async { Dio dio = Dio(); var dir; try { dir = await getApplicationDocumentsDirectory(); await new Directory('${dir.path}/epub').create(recursive: true); print('${dir.path}/epub'); await dio.download(epubUrl, "${dir.path}/epub/gutenberg.epub", onReceiveProgress: (rec, total) { print("Rec: $rec , Total: $total");...

custom TextView that can change background color I have a written a custom TextView in kotlin, which acts as a selection button. Meaning, in unselected states it has a grey-ish background with corners, and in selected state it this background changes color. (In the middle of the button there's a text) The problem : I need to display a whole group of these buttons, and for each button, the color of selected state can vary and change from button to button. So if I have : Button1, Button2, Button3, for each of them, when they're selected,...

Why can't I use the varilable aa instead of it in Kotlin? I know that the Code C is the same as the Code A. I hope to use the varilable aa instead of it in Code B, but it cause error. Why isn't the Code B same as the Code A? Code A private var aa:String?=null aa?.let{ print(it.length) } Code B private var aa:String?=null aa?.let{ print(aa.length) } Code C private var aa:String?=null aa?.let{ aa-> print(aa.length) }

Problems Sending FormUrlEncoded using Retrofit I have this request and I need to send it by FormUrlEncoded using Retrofit { "clnt_id": "OQW", "clnt_res": "AA!@#$T", "type": "SCDS", "len": "ASD" } I used this code: @FormUrlEncoded @POST("Endpoint") @Headers("Accept: Application/JSON") fun connect( @Field("clnt_id") clnt_id: String, @Field(value = "clnt_res", encoded = false) clnt_res: String, @Field("type") type: String, @Field("len") len: String ): Observable First,...

Can we merge two android source and use product flavors? I have two android project with same source code only app icon change in both app. But i don't have use product flavor. now i need to merge source code and use product flavor. so it is possible?

How to pass null from Kotlin code to a method taking String as argument in Java library? I am using microsoft auth (MSAL) SDK in my android app.The SDK is in Java but my app is in Kotlin. I need to pass String as null for the argument loginHint to signIn Java method. Example in my Kotlin code:- mSingleAccountApp?.signIn(this@MainActivity, null!!, getScopes(), getAuthInteractiveCallback()) I tried converting the code by pasting into android studio but it converted null to null!! which will give instant NPE. Method signature in Java library:- void signIn(@NonNull final Activity...

Edit textview from different class in kotlin I am working on a bluetooth android application that will need to display some data to the screen... I have a layot kotlin file and I have a seperate BluetoothService.kt file for bluetooth connection. I have established the connection now i have problems displaying data to the layout. How do I access the TextView from the bluetooth class? I have tried creating a function test that would change the textview, but I cannot access it from bluetooth class. class data_display_tab :...

Kotlin: get the data inside a <center> with Jsoup i have this HTML 2019-01-01Some Text i need get 2019-01-01, i try this in Kotlin: var table = doc.select("table.table")[1] var rows = table.select("tr") for (row in rows) { val th = row.select("th") if (th.attr("colspan")=="3"){ val date= th.select("center") } but this get all the data, how can i just extract what's inside the and before

Getting my location LatLng from Mapbox in kotlin I'm trying to get my location using mapbox on an android application built with kotlin. I'm using the locationComponent method to get it, here is my code : class PlaceholderFragment : Fragment(), OnMapReadyCallback, PermissionsListener { private var permissionsManager: PermissionsManager = PermissionsManager(this) private var mapboxMap: MapboxMap? = null private var myCurrentLocation: LatLng? = null var navigationMapRoute: NavigationMapRoute? = null override fun...