How do i add Voice Chat Feature to already Existing Video Conference Code WebRTC Android Recently i have started to learn about webrtc and managed to use one of already existed codebases with my own signalling server and it is working fine. The problem is webrtc code i am using is only for video, it is not implemented to transfer voice. Since i am not very familiar with webrtc i couldnt add voice feature. Here is the RTCClient code(probably this is the part we should implement voice-assume permission is granted) class RTCClient( context: Application,...

How can I configure the Jib Extension inside a buildSrc kotlin file? I'm trying to modularize my build.gradle.kts. It was suggested to me to create a buildSrc folder. After some research and som asking I found this article I hated Gradle!... so this was my try: buildSrc tree: buildSrc/ ├── build.gradle.kts ├── settings.gradle.kts └── src └── main ├── kotlin │   ├── Docker.kt │   ├── MyProjectExtensions.kt │  ...

Kotlin Only one class may appear in a supertype list I am running into trouble with having two superclasses. When I am adding the PreferenceFragment() I am recieving the error: Only one class may appear in a supertype list. Any ideas on how I can work around this problem? class MyAccountFragment @Inject constructor(): BaseFragment(), PreferenceFragment() { override fun onCreate(savedInstanceState: Bundle?) { TODO("not implemented") //To change body of created functions use File | Settings | File Templates. } override...

Why doesn't the Android Studio launch an error when I pass a var of MutableList<File> to List<File> in Kotlin? The paramter videoList in Code B is List type, and the var listFile is MutableList in Code A. I think the Code A will cause error, but in fact it works well, why? Code A private lateinit var listFile: MutableList override fun onViewCreated(view: View, savedInstanceState: Bundle?) { super.onViewCreated(view, savedInstanceState) val outputDirectoryOfVideo = getVideoOutputDirectory(requireContext()) listFile =outputDirectoryOfVideo.listFiles{file ->...

group by the oldest and newest SQLITE I have this two queries: Query 1: select afp, max(fecha) as fecha from valcuota where afp ='MODELO' UNION select afp, date(max(fecha),'-31 days') as fecha from valcuota where afp ='MODELO' Query 2 select strftime('%m-%Y',periodo) as periodo_str, fondo,periodo from (select fondo, periodo from movimientos group by fondo , periodo order by count(periodo) desc ) temp where temp.fondo = fondo group by...

How to get current time of a particular country or UTC Time in android(kotlin)? I want to get current time of a particular country or current UTC time regardless in which timezone I am in or what time I have set manually in the same timezone or different. I want the current real time.

On Activity Result Is not getting called inside media projection activity for Samsung J2 In my app i have a Media Projection activity which basically captures screenshot of current screen using Media Projection and it is indeed working perfectly in all devices however when it comes to samsung J2 device after requesting media projection my on activity result is not getting called at all i tried setting no history to false , and launch mode to normal but still problem persists inside my onactivity result i am trying to show logs and toast but nothing works however if mark do not...

Binding ObservableMap data to TreeView I'm just getting started with TornadoFX and I found the documentation a little sparse on how to use an ObservableMap to populate a TreeView and dynamically re-render when the underlying data changes. My app allows a user to drag/drop files into a target area. They are added to an observable list, to which I have created an ObjectBinding that groups them by parent directory. I want to reflect the Map in a TreeView as a parent/child relationship of directories and files. The following will...

How to change TextView background color while it's pressed down? I try to change background of TextView1 while it's pressed down. This is my text.xml in drawable folder: And this is my Kotlin file: override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_training) var textview1 = findViewById(R.id.TextView1) as TextView textview1.setOnClickListener{ val t = TextView(this) t.setBackgroundResource(R.drawable.text)...

WorkManager cancelled my work and then re-run it 2 times I have spent many hours figuring out what happening there, but nothing useful, so I asked here. Maybe it's os and Android bug? If I do not find the answer here, I will have to use intentservice, but I would not want to do this for simple synchronization with the server Edit1: It's important for to not duplicate works at the same time, there is must be a delay. Everything working, but sometimes duplication...

Using Kotlin and BuildSrc for build.gradle Won't Show Available Library Version Updates? As the title mentions, i am using buildSrc and Kotlin for Gradle Dependency management in a modularized android project as per the following tutorial: https://caster.io/lessons/gradle-dependency-management-using-kotlin-and-buildsrc-for-buildgradle-autocomplete-in-android-studio its working all fine but the question is how can...

Unable to upload image clicked from camera to server I'm trying to upload an image to the server after clicking from the camera but the server returns ($_File) JSON Response after clicking the image from server and uploading { "data":78, "status":true, "files": { "photo": { "name":"IMG_20191108_115642_5386652903586463966.jpg", "type":"", "tmp_name":"", "error":1, "size":0 } } } ($_File) JSON Response after picking the image from Gallery and uploading {...

I have a problem with the webview.links open in webview and browser at the same time When I click in a link on my webview application its open on the webview and browser both. I want just to open it in the webview itself.

kotlin.UInt cannot be cast to kotlinx.cinterop.CValuesRef Uncaught Kotlin exception: kotlin.ClassCastException: kotlin.UInt cannot be cast to kotlinx.cinterop.CValuesRef Using below code in Kotlin Multiplatform for SSL pinning for iOS. SecTrustEvaluate(serverTrust!!, result as CValuesRef)

Issue with Spring booth configuration and configurationproperties I have a class like below @Configuration @ConfigurationProperties(prefix = "myConfig") class MyConfig { lateinit var baseUrl: String var connectionTimeout: Int = 2000 var defaultMaxHotels: Int = 10000 var clientId: String = "my-domain" var applicationId: String = "my-app" var failureRateThreshold: Float = 20f var windowSize: Int = 100 var minNumberOfCalls: Int = 100 var waitDurationInOpenState: Long = 30_000 @Bean fun myCircuitBreaker():...

Screen rotation issue on Android OS 8.1.0 I have written following code to lock screen in portrait mode requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT but from OS 8.1.0 onward, if mobile autorotation is ON, its first opening app in landscape and then flips to portrait. Any help would be appreciated.

When building Android project with Android Gradle Plugin v. 3.5.2 my builds fail with the following: at android.databinding.tool.expr.Expr.resolveListeners(Expr.java:211) at android.databinding.tool.expr.Expr.resolveListeners(Expr.java:211) at android.databinding.tool.expr.Expr.resolveListeners(Expr.java:211) at android.databinding.tool.expr.Expr.resolveListeners(Expr.java:211) at android.databinding.tool.expr.Expr.resolveListeners(Expr.java:211) Stack trace:

Task appkaptAppDebugKotlin FAILED

FAILURE: Build failed with an exception. * What went wrong: Execution...

Kotlin Variance and Dagger Injection I'm having trouble getting a Kotlin conversion to play nice with Dagger. My previous file in Java compiles fine: @Module public class InputModule extends AbstractMvpModule { public InputModule(InputView view) { super(view); } @Provides @ActivityScope public InputPresenter provideMvpPresenter( MvpPresenterActions mvpPresenterActions, ApiManager ApiManager, UserState userState, ErrorDialogFactory errorDialogFactory,...

How to edit an Kotlin library improted on gradle in Intellij Java project My question is basically how to edit a library imported on gradle and then make the edited library my new library. I have tried to download the source file as a project but the project did not build because it cannot find one of the classes. I did this because I thought I could make the while project into a JAR. The library is the following link: https://github.com/namjug-kim/reactive-crypto I just need to...

NFC & Kotlin: How to share a String between 2 devices? I was reading this article about NFC and Kotlin and tried to implement the Code in my App. I want to send a string from one device (from the customer) to the receiving device (supplier) for a faster checking - in (for example if you have booked a table, the device reads the booking-id from the customer-app and displays the regarding information on the...

Kotlin Flow vs Android LiveData I have some questions about Kotlin Flow I can observe LiveData from multiple Fragments. Can I do this with Flow? If yes then how? We can have multiple LiveData from a single LiveData using map& switchMap. Is there any way to have multiple Flow from a single source Flow? Using MutableLiveData I can update data from anywhere using the variable reference. Is there any way to do the same with Flow? I have a use-case like: I will observe a SharedPreferences using callbackFlow{...} which will give...

findViewById RETURNS NULL IN RECYCLER VIEW I am creating a recycler view and my reference to the image and text view which am fetching with findViewById returns null. I have tried to change the ids and severally change the image and text but no avail and I have been debugging all day Student Row Adapter class StudentListAdapter(val list:ArrayList, internal var newInstance: onItemClickListener) : RecyclerView.Adapter(){ override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): StudentViewHolder...

How to generate a QR Code in Kotlin (maybe without zxing) Since zxing is in maintenance mode and the app was removed from the Google Play Store I think it's a bad idea to implement the zxing library into my App. Also the BarcodeFormat.QR_Code isn't available anymore in zxing-embedded. Anyone knows how to generate a QR Code now? Therefore, I'm in search of a future-proof SDK or way to generate a String-based QR Code in Kotlin which will be displayed on the user device. Thank you :)

How to communicate between viewModel and MainActivity through Databinding? I am trying to implement MVVM arcitecture in Kotlin using data binding. the code just shows blank screen as an output. Can anybody help me to figureout why there is no call to the server while executing this program. I tried this and links similar to this to solve the issue. My Code is as follows: MainActivity class MainActivity : AppCompatActivity() { private...

java.lang.ClassNotFoundException: Didn't find class on path: DexPathList only Android 5.0 My app when generating build apk in android 5.0 device release occurs 21 serious errors. I believe it is related to MultiDex. My build.grale (app) } compileSdkVersion 28 buildToolsVersion '26.0.3' defaultConfig { applicationId "" minSdkVersion 21 targetSdkVersion 28 versionCode 87 versionName "1.3.13" vectorDrawables.useSupportLibrary = true multiDexEnabled true testInstrumentationRunner...

Kotlin actor coroutine and concurrency issue When looking at the example https://github.com/kotlin/kotlinx.coroutines/blob/master/kotlinx-coroutines-core/jvm/test/guide/example-sync-07.kt , more specifically at the following fragment // This function launches a new counter actor fun CoroutineScope.counterActor() = actor { var counter = 0 // actor state for (msg in channel) {...

Dagger 2 - Not generating xxxModule_xxxFactory classes I'm working with Dagger2 in a multi-module project and Im having an issue with one module in particular. I have a Room database that I'm injecting into Repository classes. The module for that looks something like this: @Module class RoomModule(app: Application) { private val database = AppDatabase.getInstance(app) @Provides @Singleton fun provideModelDao() = database.getModelDao() @Provides @Singleton fun provideAnotherModelDao() = database.getAnotherModelDao() }...

can not integrate webrtc in android to create video chat app I am using matrix.org to create chat app, I downloaded the sdk but it is not compile it gives error and can not find one of the files this is my gradle file can anyone help please ?

Kotlin -Run print statement when button is pressed I'm a Swift dev and I'm just getting into Kotlin so I'm unfamiliar with how things work. In Swift if I create a button and add an action/target to it, and in that action I add a print statement it gets printed out in the console. lazy var myButton: UIButton = { let button = UIButton(type: .system) // create button button.addTarget(self, action: #selector(myButtonPressed), for: .touchUpInside) return button }() @objc func myButtonPressed() { print("this gets printed to...

Android Add elements to an ArrayList Inside onActivityResult method I am new in android and i have been facing some weird troubles. I need to add elements to an ArrayList from inside onActivityResult method, with var it works perfectly but with arrays or lists it crashes. I am not trying to pass values from startActivityForResult to onActivityResult. I'm trying to use onActivityResult values out of this method. Even with a singleton class it crashes. I need to store the uris to upload every image and get the ids to send it to the server class...