Scanning wifi on newer versions of android I'm writing a Work Tracker application, which needs to scan the nearby wifi hotspots for security. I'm trying to follow the code given at Google's official site, but it keeps failing. I read somewhere that this code won't work on newer versions of android, and well enough it doesn't work neither on the Android 12 emulator, nor on my Android 10 device. How am I supposed to solve this...

How can raw binary data be passed between React Native and native I am trying to send and receive binary data from React Native JS to the native side. Currently this can be done by parse the data to hex or base64 string format. However I want to optimize when there are millions of tasks need to be done concurrently and skip that step and send the buffer or byte to native and vice versa. Is it possible?

How to set x and y values of TextView in Android Studio Programmatically I am trying to set a random value for textview of x and y together in 1 forloop. I have a function fun createTextView(text: String, index: Int): TextView and on another function, I am using a for loop to create the TextView based on number of words in a list. val words = arrayListOf("abc","def","ghi") for ((wordIndex, i) in words.withIndex()){ createTextView(i,wordIndex).x = some random number } From this loop, I can only set either x or y value for my...

Is There any android Emulator that have Sim slot but no sim in? I want to Remove insert Sim in android emulator but i cannot see any setting their how i can achive it or is there any specific model here in which we can insert remove sim card..?

How to create a new composable function in Android Studio? Each time, I need to create a composable function, I do: Right click on a package -> New -> Kotlin Class/File And I end up with this: class MyClass {} Now I have to do three changes manually: Add @Composable annotation Change class with fun Create the constructor And this is really annoying. But this is the result: @Composable fun MyClass( //Add arguments ) { //Add logic } How can I do this operation quicker? Is there any shortcut in Android Studio? I couldn't find anything in the...

How to set Bottom Sheet full height? I'm trying to make a bottom sheet appear in full height but I only get half height. In the upper XML preview, the upper half is white and then comes my design. I don't know how to remove it, if it is neccessary. My XML-Design: fragment_video_player.xml...

GroupBy ArrayList Kotlin not wok I have issue when group ArrayList object in Kotlin. I have JSON like here : { "securityAccountList": [ { "accountNumber": "001548900001", "accountName": "Tjandraningrum", "currency": "IDR", "debtInstrument": "0", "equityInstrument": "0" }, { "accountNumber": "001548900001", "accountName": "Tjandraningrum", "currency": "IDR", "debtInstrument": "0", "equityInstrument": "0" }, { "accountNumber":...

rate stars in rating bar | kotlin i'm new in kotlin and i need help!! i have list of 5 stars on the line(like rating bar) and want, for example when you clicked 3d star previous two change color. how can i write it with loop pragmaticaly? with if/else? i hope you help me! thanks!! have this code: ` val star1: ImageView = binding.star1 binding.star1.setOnClickListener { Log.d("Star 1","Rate 1") star1.setImageDrawable(ContextCompat.getDrawable(star1.context, com.example.godelreviews.R.drawable.star2))} val star2: ImageView...

Is there any pitfall using mutable set when mapping two repositories by using @OneToMany I have two repositories mapped by using @OneToMany notation. Let's say @OneToMany entity is A, and @ManyToOne entity is B. I keep mutableSetOf(B) in entity of A. After I map two of them I had to get first B after checking some properties. But while debugging I realized that order of them comes randomly at each time. I could not find this issue online. Is this thing I am having possible?

How to convert textview xml into a function in kotlin? So far, I only found answers that convert xml parameters outside a function, but I can't find how to add parameters into a function. I only able to convert the android:layout_height and android:layout_width with this code below fun addText(input: String, index: Int): TextView { val parameter = ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,ViewGroup.LayoutParams.WRAP_CONTENT) } I have done it with XML but I find it hard to convert it into a function in Kotlin. Below is...

How do you make multiple Post Api request and receive multiple responses using retrofit I want to make multiple Post request sending a list of data and would like to receive each response to check what was submitted successfully or not. what is the best way to implement this?

How To Update MY Android System-App without PlayStore? (Within the application) I have a Custom Launcher .apk that I ADB Sideload. I can simply copy the .apk into /system/app or /system/priv-app, set the appropriate permissions (rw-r-r, root:root) and then do a reboot. That's it. The App is considered a System-App. adb root adb push /system/app/ adb shell chmod 644 /system/app/HelloWorld.apk reboot The App is a "System-App" and should remain one after updating. How can I update it without using Google Play Store? It is a KIOSK Application and it should be updatable from...

how to pass mainActivity context and mapView from fragment? In my mainActivity there is a map, I then created a fragment where coordinates are inserted to be passed as parameters of the createPath function of the navFun class, the latter should create a path in the main activity map. how can I pass the context and the mapView of the main activity when I call the createPath function of the navFun class in the fragment? I ask this because I created the navFun class with a constructor that requires the context and the mapview as parameters, should I...

How to override method in library? That's my gradle with library api 'com.simplifyink1.0.2' In the library file, which is read-only Inkview.java This method is triggered, when every popup, showkeyboard is displayed. @Override protected void onSizeChanged(int w, int h, int oldw, int oldh) { super.onSizeChanged(w, h, oldw, oldh); clear(); } I would like to override it to just not call this method, or call it whether I need it. I have created InkView.kt fun InkView.onSizeChanged(w: Int, h: Int,...

switch back to the running flutter app from another app I want to switch from flutter app to phone dialer, do a call, and after call, I want to switch back to the flutter app. Someone guide me how to do it.

Setting Height and Width of textView based on the text I have a textView function that's create text view fun createTextView(text: String, index: Int): TextView Now I'm trying to make the textView height and width based on the text I input val words = arrayListOf("abc") I tried for ((wordIndex, i) in words.withIndex()){ val textView = createTextView(i,wordIndex) textView.y = shuffleXList[wordIndex]*83F textView.x= shuffleYList[wordIndex]*83F textView.measure(0, 0) textView.height =...

Take value from spinner I am making a program which includes a spinner and i need that when you select an item from the spinner it shows it in a text view. This is the code i have so far: val spinner_1 = findViewById(R.id.drop_1) if (spinner_1 != null) { val adapter = ArrayAdapter(this, android.R.layout.simple_spinner_item, lands) spinner_1.adapter = adapter} var text = "" text = spinner_1.getSelectedItem().toString() val choice = findViewById(R.id.textView_choice) as TextView...

When writing in succession with the strage access framework, only the first file is written We are creating an android application. I want to perform file operations in succession, but when I start the picker and write to saf (strage access framework) in succession, only the first file is written and the subsequent files are not written. What I would like to achieve I want to start and write the picker continuously in saf and make all files work properly. Source code for this. class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) {...

Android - Retrieving in item from a Room database by its ID I'm trying to retrieve a single Client item from my Room database. Every client is displayed in a list, and each client has an edit button on them. When the button is pressed, I would like to retrieve that client from the database by their id. Their details will then be displayed on an edit screen. My problem arises in actually getting the client from the database. So far I have tried 2 approaches: Coroutines based approach I have tried to retrieve the item using coroutine based functions...

Passing in a function only works if inlined, not if created by higher-order function Two methods were sharing the exact same logic for handling a function returning a CompletableFuture, so I thought I would extract it into a common function that would return this logic. In the screenshot below this is called handleDataReportSavingOutcome and it is basically returning a function that <a href="https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CompletableFuture.html#whenComplete-java.util.function.BiConsumer-" rel="nofollow noreferrer">matches what the whenComplete...

Is there an option to override parameters, methods in library? According to this topic: How to override method in library? I would like to override some methods and variables from InkView. Is it possible? :) I have created class: class MyInkView: InkView { constructor(context: Context, attrs: AttributeSet, defStyleAttr: Int = 0): super(context, attrs, defStyleAttr) constructor(context: Context, attrs:...

Add or update a value in a database based on a condition So I managed to solve a previous problem regarding adding the dropdown-menu value to a database, it now registers the result and saves it. But how can I check whether the user has already chosen a value from the dropdown menu ( in my case an age between 1 - 10 ). If the user has not chosen an age for the first time, the database will register it as "adding it" to the database as normal but if the user already has chosen an age, it will just update the database with the new value/ age. I...

how to get context and mapView in fragment I created a fragment in which through editText fields I would like to insert numbers to be used as parameters in a function created in another class (the function createPath of the NavFun class). The NavFun class I created has a constructor that takes two variables, the context of the main_activity and a mapView. I would like to call the createPath function after clicking the button in the fragment. how how can i get the context of the main_activity and the mapView in the fragment to create...

"AndroidKeyStore" with custom passcode or different provider with secure hardware protection I'm implementing SCA (Strong Customer Authentication) on Android. There are 3 factors on SCA which are following: Something you know (customer's 6 digit passCode) Something you have (device secure hardware) Something you are (biometrics) So for this, I need to generate public&private keys which is protected by customer's 6 digit passcode. "AndroidKeyStore" can protect public private keys with device-owner's lock-screen credentials but I need to protect it with my user's passCode on my app....

JWT bearer token expiration on Android I am asking this because I didn't found a good approach over here. I am currently working with an API that uses a bearer token to get authenticated, the token expires after one week of it's creation. I am using artifact modules, seperating the view such as activities, fragments and that stuff from the core logic of the app like the calls to the API. Can't access to the views from the logic module. When the token expires the server returns a 401 - Unauthorized Exception and when it happens I...

[Kotlin][Android] Clicking 2 Views in order Hello I am trying to make a user to click the textView in order based on a keylist. var keylist = arrayListOf("word1","word2") val View1 = createTextView("word1") View1.y = 83F*0 val View2 = createTextView("word2") View2.y = 83F*4 if (View1.text == keylist[0]) { View1.setOnClickListener() { keylist.removeAt(0) frame.removeView(View1) } } else{ View1.setOnClickListener() { outOfOrder(View1) } } if (View2.text == keylist[0]) {...

Team City Kotlin Unresolved Reference I've been migrating/refactoring a team city project to use Kotlin and for the most part it's been going well, however TeamCity is now failing to compile the Kotlin changes seemingly out of nowhere because of an "Unresolved reference", despite compiling fine on my local machine. Here's where I am so far: The Kotlin script that fails to compile definitely imports the right package The package that the script is importing is definitely tracked in vcs Reverting the Kotlin project to a state...

Update a variable in companion object I want to know if there is a way to update a variable value created in a companion object inside a viewModel. Here is my code @HiltViewModel class ApiViewModel @Inject constructor( application: Application, private val platformRepository: PlatformRepository, ) : AndroidViewModel(application) { companion object { var userProfile: MutableState = mutableStateOf(Person()) } fun getUserProfile() { viewModelScope.launch {...

app crashes while opening main Activity because of getString(R.string.xxx) I am working in app with two languages in autocomplatetextview i want to change values according to the language of device i try this code var EGP = getString(R.string.egyptian_pound_egp) var USD = getString(R.string.american_dollar_usd) var SAR = getString(R.string.Saudia_Ryal) var KWD = getString(R.string.Kuwaiti_Dinar) and full code of MainActivity package com.example.currency import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import...

Tell Kotlin that a generic type is an interface Let's say I have a class Foo class Foo { val noProblem = "Hakuna Matata" } I now want to decorate it with an ID. Kotlin's delegates make this relatively painless: class IdentifiableFoo( val id: Int, foo: Foo, ): Foo by foo interface Foo { val noProblem: String } class FooImpl: Foo { override val noProblem = "Hakuna Matata" } but let's say I have another class Bar that I also want to decorate, and then another Baz, and then another ... I could just create a...