An android app that connects to the Internet I am trying to connect the app to the internet and fetch the HTML code from the website. I keep getting the error at the line con.connect() val c1 = ConnectInternetTask(this) c1.execute("http://www.google.com") class ConnectInternetTask(ct: Context): AsyncTask() { init { val ctx:Context = ct } override fun doInBackground(vararg params: String?): String? { val s: String? = params[0] val input:InputStream try { val url = URL(s)...

Kotlin: Unresolved reference. None of the following candidates is applicable because of receiver type mismatch: var Ticket = ParkTicket(Time(5,10)) var Ticket2 = ParkTicket(Time(5,10)) var Tickets = mutableListOf(ParkTicket(Time(5,10)),Ticket2) var Tariffe = mutableListOf(Tariff.DEFAULT,Tariff.WEEKEND) var Liste = mutableListOf(Tickets,Tariffe) fun test() { Liste[0][0].checkOut(Time(5,20)) } } Im getting: 149 Kotlin: Unresolved reference. None of the following candidates is applicable because of receiver type mismatch: public inline operator fun Map.get(key:...

how to use transition listener? I want to app show the call my chosen fragment when it's in constraint end and then back to start, show the previous fragment but I have a problem with using transition listener I copied the code and pasted it in my project but it has 3 error there is a pic of errors mainactivity.kt class MainActivity : AppCompatActivity() { private val homeFragment = HomeFragment() private val dashboardFragment =...

Camera 2 API TextureView is being stretched in fullscreen I'm currently making an app with Camera2 API, however I am using TextureView instead of the AutoFillTextureView class. Usually it's the aspect ratio problem on Camera2, but I did found a mini solution which it comes with this code map.getOutputSizes(SurfaceTexture::class.java)[1]. Even though changing it's value helps at some point, but what I am searching is to fix the stretching while rotating from portrait to landscape when the device is on fullscreen, other than picking it's aspect...

Multiple colors in TextField of Jetpack Compose Hey guys, someone know how its possible to get different colors in a TextField of Jetpack Compose? Something like with the Text composable with AnnotatedString, but TextField dont allow AnnotatedString as input value. Hope you guys can help me :) see ya

Error Execution failed for task ':app:kaptGenerateStubsDebugKotlin'. when running project in Android Studio I tried to run my project in Android Studio and got this unexpected error: Execution failed for task 'appkaptGenerateStubsDebugKotlin'. Internal compiler error. See log for more details. The language I use is Kotlin. I didn't change anything and just got this error. I also updated the Android Studio to last version, but it didn't solve the problem. I pressed "run with stacktrace" and this is the result Exception is: org.gradle.api.tasks.TaskExecutionException: Execution failed for task...

Thread management Mutex vs Synchronized I have couple of options: A: GlobalScope.launch { countTo("A",5) } GlobalScope.launch { countTo("B",5) } private fun countTo(from:String, k: Int) { for (i in 0 until k) { RLog.d("From:$from: $i") Thread.sleep(1000) } } Output: FromA 0 FromB 1 FromA 1 FromB 2 FromA 2 FromB 3 FromA 3 FromB 4 FromA 4 B: GlobalScope.launch { countTo("A",5) } GlobalScope.launch {...

How do I integrate the new Google sleep tracking API into my react-native application? Question pretty much says it all. Google launched a new Sleep Tracking API in Google play services recently, and I want to integrate that in my application that currently uses react-native and a REST API. From what I can tell, the sleep tracking api required Kotlin, so how do I integrate that into my app?

Google Sign in doesn't work with in-app updates on Flutter I'm developing a Hacker News app with a bookmark system. The user can sign in with his Google Account and save articles to read them later. So I use the google_sign_in, firebase_core, firebase_auth and cloud_firestore plugins. Everything worked fine but since I've implemented the in-app update, nothing happens when I select my Google account to sign in. And when I try once again I get this error: E/MethodChannel#plugins.flutter.io/google_sign_in(23550): Failed to handle method call...

How to convert 3 or more LiveData. into a single Flow in Android The view model has 3 live data coming in from 3 different api calls. Now, I want to display all the data together as different cards in a list in the recycler view. What would be the best way to do this ? Currently I'm using MediatorLiveData, but now I need to have 4 different api calls, which would make 4 live data objects. Therefore, I'm trying to use kotlin flow for this problem. How can I combine the. 4 different Live Data coming in from different UseCases into a single Flow object and...

Why isn't me TypeConverter being called / used. Program doesn't appear to recognise it I've got a TypeConverter class linked to my database, but it doesn't seem to be getting called and therefore i'm getting the following error ForecastAQSpecified.java9 error: Cannot figure out how to read this field from a cursor. private final java.time.LocalDate dt = null; dt is the datetime I get in my JSON response in the form of an epoch Int. I'm looking to convert this to a LocalDate. My Entity class is as follows @Entity(tableName = "future_AQ", indices = [Index(value = ["dt"],...

Kotlin Multiplattform Project Dependencies What do I do wrong, I just want to add dependencies to my multiplattform project (at the moment just windows): I just added some example repository and dependencies. plugins { kotlin("multiplatform") version "1.5.0" kotlin("plugin.serialization") version "1.5.0" } kotlin { allprojects { repositories { mavenCentral() google() jcenter() maven { setUrl("https://jitpack.io") } } } sourceSets { commonMain {...

Manage state in Jetpack Compose In my viewModel I have "state" for every single screen. e.g. class MainState(val commonState: CommonState) { val text = MutableStateFlow("text") } I pass viewModel to my JetpackCompose screen. @Composable fun MainScreen(text: String, viewModel: HomeViewModel) { val textState = remember { mutableStateOf(TextFieldValue()) } Column( modifier = Modifier .fillMaxWidth() .fillMaxHeight(), verticalArrangement = Arrangement.Center,...

Firestore query result is blocked I am writing a suspend function that returns a list of users whose ids are in the input list. I use firestore queries for this. The function seems to be hanging after calling await() on the query.get(). I do not understand why this is happening. I have checked the ids from the input list and from the users in the database and they are fine. Here is the code suspend fun getUsers(idList: List): MutableList { val collectionReference: CollectionReference =...

How to Repeat Timer in Android I would like to repeat the countdown timer for example I want the countDownTimer should run for like first 60 seconds(user will choose) then 40 seconds(user will choose) and this should repeat like 3 times(user will choose this number) . But I don't know how to do it. fun startTimer() { countDownTimer = object : CountDownTimer(testNumber, 1000) { override fun onTick(millisUntilFinished: Long) { testNumber = millisUntilFinished...

How to validate EditTexts in Android (Kotlin)? I have a bottom sheet in my App where the user based on tipo has to fulfill all EditTexts in it before submitting the data. So i would know what is the best practice to validate that fields, for now i've created a method which check each field if is not empty and if it is i exit from the function which calls the submit and set the error message to TextInputLayout of each empty fields. My function looks like this: private fun isTestataValid(): Boolean { var isValid = true if...

Wait BroadcastReceiver for return value in routine function I've made a android routine with Worker. The routine gets some info from device, as in codes below. My problem it to get the wifi list from the broadcast and send it to the routine. I tried with coroutine and with the broadcast inside function, but nothing is working for return the data to worker routine My class DeviceInfo, where the data is collected: class DeviceInfo(private val context: Context) { private var listNetworkAvailable = mutableListOf() // I'm trying to do with the...

Micronaut: How to run a method of a class after micronaut starts up? Let's say I have a simple class written (it is in Kotlin, but this question extends to Java as well): class Bot { fun initialize() { val client: GatewayDiscordClient = DiscordClientBuilder.create("MY-TOKEN") .build() .login() .block()!! MajorEvent.createEvents(client) client.onDisconnect().block() } } The basic way of running an Micronaut app goes like this: fun main(args: Array) { build()...

Why my validation using setOnFocusChangeListener isn't working? I wanted to make a validation that whenever the user leaves the TextInputLayout empty, an error should appear such as "This field can't be empty". I tried doing like this but yet it isn't working: fun TextInputLayout.emptyItem() { this.editText?.setOnFocusChangeListener { _, hasFocus -> this.isEndIconVisible = hasFocus if (!hasFocus) { if (this.editText?.text?.trim().isNullOrEmpty()) {...

Shorten and change existing code in Kotlin_2 I need to make a shorter version of the code below: class XYZ(val x:Int) { fun add(y:Int):Int { return x + y } fun multiply(b:Int):Int { return x * y } }

A problem occurred configuring project ':app' 123 I get like this when I let the line apply plugin: 'com.google.gms.google-services' delete it, it doesn't exist anymore .cloud firebase

My android app has an database problem (nullable problem) These are basically my problems, in sqlite browser app. I arranged the admin_id as not null but in android studio, it still tries to run as null. I did changed the db files after...

Getting FrafmentResultListener triggered without popbackstack Currently I'm facing a problem getting data from a child fragment to it's parent fragment, I saw that the best option is using setFragmentResult but because setFragmentResultListener needs to be in STARTED state at parentFragment(doen't happen because it is stoped when replaced by another fragment) I see that the only option is to use popBackStack() and then the listener gets triggered. The thing is that I don't wanna use popBackStack() Can anyone help me? PS: No, I don't want to use...

Error adding dependencies library after Android studio 4.2 Android Studio As of Android 4.2, which came recently, is there a bug when we created the project or when we added libraries later, or is it related to my android studio? I think I've tried every way to fix the problem. I would be glad if you help. Error encodings :) Manifest merger failed with multiple errors, see logs buildscript { ext.kotlin_version = "1.4.10" repositories { google() mavenCentral() } dependencies { classpath...

How to keep running BlueTooth on background I have a loop for keep Bluetooth descovering devices for infinite time, you can see how simple is thread { while(1==1){ if(!mBluetoothAdapter.isDiscovering){ mBluetoothAdapter.startDiscovery() } } } it works nice, but the problem comes when i turn off the screen , then after 2 minutes the threat still on but for some reason Bluetooth stop discover...

ViewPager2 not restoring item position In my movies app, I'm showing the movie cast list using recyclerView and movie posters using viewPager2 in MovieDetailFragment(connected to its ViewModel) . I'm clicking on any poster to navigate to posterFragment and when I'm coming back to MovieDetailFragment recyclerView is restoring its state i.e it's showing data from that position till the position I scrolled it, but viewPager is resetting to position 0 every time.

Can't view tests running on VNC Viewer with Chrome Bit of an issue I ran into as this used to work and VNC showed the tests running in Chrome but no longer works, I have searched and searched and can't seem to find a resolution to this hopefully someone can lead me in the right way here is the code sample that's running: class LoginTests { var driver: WebDriver? = null; @Then("^I login to Website$") fun openingWebsite() { val options = ChromeOptions() options.addArguments("--headless") options.addArguments("--disable-gpu")...

how to make a video private from internal storage in android studio? I am working on a video player app. I would like to implement a feature that makes videos private. They would only be accessible and played through my app. I've seen this feature implemented in many video player apps but I'm not sure how to do it.

Text Composable dimensionResource not working as fontSize parameter When I plug in fontSize = dimensionResource(id = R.dimen.textLabelTextSize) where the dimens or 54sp or 60sp depending on the device, I get an error on Text() "None of the following functions can be called with the arguments supplied." But when I put a hard-coded value like 54sp it's fine. What's strange is for the padding modifier dimensionResource (in dp) is working fine. Text( text = textLabelItem.textLabel, modifier = Modifier...

What to put inside increment()? I wish the amount to increase by 1 every time the "+" is clicked. But now when I click "+", it shows like this Problem(A): increment is red in android:onClick="increment" /> in activity_main.xml Problem(B): I know I should write something inside () of increment() and I have tried (1)increment(view: View?)=> red alert: parameter 'view' is...