Try to remove unused string but it's not working I'm trying to remove the unused string from string.xml but it's showing noting in the preview I have many strings which are unused I follow the step open string.xml right-click select reflector -> unused resource

Kotlin: most efficient coroutine based http client What would you suggest as the most efficient coroutine based http client for kotlin. One additional requirement is to be also able to limit the number of in progress requests.

Kotlin Data Type Syntax What does the following data type means: () -> String It is being used in the following context. fun sampleFun(message: ()-> String)

How to restrict enums in Kotlin? I have an enum with many values; error codes for example, or some official list of coded values. In my application, I have several functions where only a subset of those values is admissible. How can I derive restricted enums that contain only a subset of the original enum? For example, I have an externally provided dictionary of error codes that model as enum: enum class APIError(val: errorCode: Int) { INCORRECT_CHARACTER(1), MISSING_VALUE(2), TOO_SMALL(3), TOO_LARGE(4) } In one...

Widget in sub menu. When text is selected How can I add my app to sub menu when I selected text in phone and if I click android open widget. Google translator have something like that. When I selected text sub menu opens and I choose translator, android open Google translator widget.

TextView not displaying full text in BottomSheetDialog My text is not being shown correctly despite having maxLines="10" Here is my xml code for the TextView Tried to implement scrolling programmatically but nothing happens uAbout.movementMethod = ScrollingMovementMethod()

No Bean Definition Found exception 2022-06-20 18:59:22.201 20149-20149/com.xx.xxxx E/AndroidRuntime: FATAL EXCEPTION: main Process: com.xx.xxxx, PID: 20149 java.lang.RuntimeException: java.lang.reflect.InvocationTargetException at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:681) Caused by: java.lang.reflect.InvocationTargetException at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) at...

How can I limit barcode scanner to once? I try to code a barcode scanner with Jetpack Compose and Google ML Kit. I use ImageAnalysis with the STRATEGY_KEEP_ONLY_LATEST and call a class BarCodeAnalyzer who initialize and create the barcodeScanner. But when I scan a barcode, my code detect two time the same barcode and open two screens. So how can I pause scan ? Or stop the imageAnalysis when I found a barcode ? AndroidView AndroidView( factory = { context -> val previewView = PreviewView(context) val preview =...

Avoid erasing generics in Runtime with Generics in Kotlin I have a "repository" that encapsulates some datastore, my goal is to get values from there by using generics. However I keep getting : Cannot use 'T' as reified type parameter. Use a class instead. interface IRepo { fun retrieve(key: String): T? } class MyRepo: IRepo { private var sharedPrefs override fun retrieve(key: String): T? { return getByType(key) --> here T causes : Cannot use 'T' as reified type parameter. Use a class instead. } private inline fun...

How to open the cash drawer in android device I'm using kotlin in my android application I have connect the cash drawer with the printer , I want the code that its open the cash drawer with the printing please help me

How we can compare textfield values are same value in jetpack compose? I have register screen in android jetpack compose, and I have ScreenA and ScreenB, in ScreenA I have email and in ScreenB I have again mail and confirm mail, so I want to control those three email values is same value. In ScreenA when I put any mail, in ScreenB both mail must be same mail with ScreenA, any solution? ScreenA: @Composable fun ScreenA( navController: NavController, model: MyViewModel ) { val email = remember { mutableStateOf(TextFieldValue()) } Column(...

Issue With App Engine and Spring Boot : Request is missing required authentication credential. Expected OAuth 2 access token, I'm developping an App Engine application, that is basically an API. So it's a backend Application I started this project approximatively one year ago, and i had no issue deploying it on App Engine. But since yesterday, each time i want to deploy a new version (with little to no change between the last working version uploaded 2 months ago) i always got the same error on my logs : { "textPayload": "java.io.IOException: Server returned HTTP response code: 500 for URL:...

How to declare external typescript types in kotlin I need to access a Typescript library (react-admin) from kotlin-js In particular this types definitions https://github.com/marmelab/react-admin/blob/master/packages/ra-core/src/types.ts How do I declare in kotlinjs for example the following types ? export type AuthProvider = { login: (params: any) => Promise; logout: (params: any) => Promise; checkAuth:...

How can I replace rectangles with images/assets using Jetpack Compose [Kotlin]? I am currently developing a Sokoban game in Kotlin for an Android app and at this point I have an algorithm that generates a matrix of strings where each string refers to a specific game element, e.g., "#" - Wall, "0" - Floor, "@" - Player, "$" - Box, etc... Based on that matrix, I am using Jetpack Compose to draw in a canvas rectangles with different colors so I can distinguish the elements (wall, floor, ...) of the Sokoban game. At the moment, this is the result: <a...

Check if a list of objects contains the object without the filter call to get true/false result I got listOf and I have Pojo object. I need to check if the list has objects with the same values and return true or false without filtering. Trying val result = myPojo in pojoList Got this error None of the following functions can be called with the arguments supplied. CharSequence.contains(Char, Boolean = ...) defined in kotlin.text CharSequence.contains(CharSequence, Boolean = ...) defined in kotlin.text CharSequence.contains(Regex) defined in kotlin.text

Validating JSON schema with intersections and unions classes in Kotlin I'm thinking about rewriting small web server project that I have from TypeScript to Kotlin. The problem that I have is server accepts a JSON with unions and intersections. For the purpose of this example: I want incoming JSON to have a string field with either the name one or name two, but not both or none of them, e.g. {"one": "some text"} or {"two": "some other text"} I want format of incoming request be dependent on one of its fields, e.g.: { "someFlag": false, // or can be missing...

Rxjava emit only if a condition is met I have a polling function that is mapped to 3 different states private fun pollFromApi(): Observable { return Observable.interval(3L, TimeUnit.SECONDS, schedulerProvider.io()) .startWith(0L) .flatMap { api.getCall().toObservable() } .map { when { condition1 -> State1 // convert response to State1 condition2 -> State2 // convert response to State2 condition3 -> State3 // convert response...

error: [Dagger/DependencyCycle] Found a dependency cycle with Dagger2 I am trying to use @BindsInstance in a Component Builder, but can't inject dependency into a module That is the component: @Component(modules = [MainModule::class]) interface MainComponent { fun inject(activity: MainActivity) @Component.Builder interface Builder { @BindsInstance fun mainDep(dep: MainTest): Builder fun build(): MainComponent } } That is the module: @Module class MainModule { @Provides fun provideMainTest(mainTest: MainTest) =...

Date format of milliseconds shows SSS only I'm trying to get the current time including milliseconds, but it only shows SSS. Here is my code: import android.text.format.DateFormat import java.util.Calendar ... String.format( "%s IOException: %s", DateFormat.format("HH🇲🇲ss.SSS", Calendar.getInstance().time), ex.message ) It outputs 20:41:03.SSS some other text. Also tried just toasting the date, same output.

How can we combine 2 array lists in java [duplicate] import java.util.* fun main(args: Array) { val firstArray = arrayOf(-1, 2, 3) val secondArray = arrayOf(1,2,-3,4) println(Arrays.toString(firstArray)) println(Arrays.toString(secondArray)) val iArray = firstArray.intersect(secondArray.toList()).toIntArray() println(Arrays.toString(iArray)) } the above program returned [2] how can we achieve like [-1,2,3],[1,2,-3,4] would return [[-1,1],[2,2],[3,-3]]

Fragment displaying a grey field I am still a bit new to fragments in android studio but I was wondering if this is usually how fragments are displayed as on the phone. It appear as a grey background above my activity, as shown in this image: https://gyazo.com/9d5569718c5092debfeaab1c631b0046 This is my MainAppActivity code: class MainAppActivity : AppCompatActivity() { private lateinit var appBarConfiguration: AppBarConfiguration...

Map is not opening I wanted to remove title bars in all of my activities and changed .DarkActionBar to .NoActionBar in themes.xml, which resulted in crash when i click a button to open a map, then i changed android:theme in each activity except for map to NoActionBar, which didnt help, now i go back in files history for back up, use an old one and map still crashes when opened. I tried syncing project with gradle files and invalidating cache - 0 result. Here's some code that was changed:...

Dynamic Url with @Post request retrofit + hilt I am trying with Hilt and Retrofit2 to create a Post request with a dynamic URL. I am getting the error @Url cannot be used with @POST URL (parameter #1) I need the query to be dynamic too @POST("{id}") suspend fun getConfiguration( @Url url: String, @Body configRequest: ConfigRequest, @Query("id") id: String ): Config the builder @ExperimentalSerializationApi @Provides @Singleton fun provideApi(@ApplicationContext context: Context): Api{ val contentType =...

Why is my android app just crashing when I run it? Why is my app just crashing? It is supposed to be a training app that gives you instructions via multiple pages. But it is throwing this error in the console when i run it on my phone and on my virtual phone. These are the files that are in my project. Please help. E/AndroidRuntime: FATAL EXCEPTION: main Process: com.hectorwithc.training_handbook, PID: 7400 java.lang.RuntimeException: Unable to instantiate activity...

Service Loader Can't Find Provider I am having trouble getting the service loader to find my providers. My set up is as follows: I have 4 modules: EntryPoint Library Version1 Version2 In Library, I have an interface defined: interface Parent{ fun doSomething() fun getName() } In Version1 and Version2, I override that interface with a class called Impl. I also place META-INF/services/parent.package.path.Parent in the resources folder, with child.package.path.Impl as its contents. In EntryPoint I have a main...

Kotlin Validation issue with Register function in login system When on the Login page and when pressing register, it takes you to register, but when clicking on register button on register page, it adds user to database regardless if info is provided or not and then takes you back to login page. I want the validation to happen before the execution. Currently it does validate, but executes regardless. Please advise. class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) {...

Why calling a private constructor in Kotlin results in error as "Cannot access &lt;init&gt;"? What is &lt;init&gt;? If you use factory method in Kotlin to create an object, like: class Person private constructor(val firstName:String , val lastName: String) { companion object { fun createPerson(firstName: String, lastName: String): Person { return Person(firstName, lastName) } } } Calling factory method works: val person1 = Person.createPerson("Niels", "Abel") And also, of course, you can't call the constructor directly: val person2 = Person("Évariste", "Galois") The...

Android Studio cannot find R (Resources) after Java to Kotlin conversion Problem Every time I paste a Java code from somewhere, I select yest to the Android Studio prompt asking to convert it from Java to Kotlin. But after that happens, I seem to have all my previously working R based resources like R.drawable and R.string as unresolved. What have I tried so far ? Every time this happens, I copy the converted code and then Ctrl+Z up to a point where everything is back to being resolved...

Ktor Client: parent property in Resources with nested classes In ktor client 2.0.2 docs, on Resources with neseted classes section, it is stated: Nested classes should have a property with an outer class type. From an example Here @Serializable @Resource("/users") data class Users {...