App crashes when I try to read data from generic wrapper class I have an app, which uses room database. It is a bit long term project for me, where I've started to learning "more advanced" things. So lately, I've discovered that my apps like to crash, when I'll either wipe data on emulator, or re-install app on real device. The app is crashing when I try to get some stuff from the database, when the State of it, is set to Success. In my database class, I've made a callback, to insert some "default" data (which later on in fragment will be retrieved) into...

Android Studio - Kotlin - setOnClickListener //Good afternoon, I can not find the error in the code, I'm beginner someone could help me?// []()

Unresolved Reference R when I when I create an action between two fragments in the navigation component I am trying to go from one fragment to another and when I create the action in the navigation component when executing I get an error Unresolved Reference R I don't understand why it doesn't work, I've tried everything to delete the fragments and recreate them but nothing works. If I remove the action everything runs perfectly

Task :app:checkDebugDuplicateClasses FAILED Task appcheckDebugDuplicateClasses FAILED Execution failed for task 'appcheckDebugDuplicateClasses'. A failure occurred while executing com.android.build.gradle.internal.tasks.CheckDuplicatesRunnable Duplicate class com.mapbox.android.telemetry.AlarmReceiver found in modules jetified-mapbox-android-telemetry-4.7.3-runtime (com.mapbox.mapboxsdkmapbox android telemetry4.7.3) and jetified-mapbox-android-telemetry-okhttp3-8.1.0-runtime...

Explain C code and convert it to Java or Kotlin Convert C code to Java or Kotlin Hi here is a link of a file of github: https://github.com/sharkrf/srf-ip-conn/blob/master/srf-ip-conn/client-demo/client.c Here there is a function or method called "client_send_login" which is written in "C". I need to write it into Java. can anyone help me writing the code for that function and explain me once what exaclty is happening...

How to mock s3 put object request using mockK? I have a function below which uploads data to s3 val s3Client = S3Client.create() data class S3Object( val bucket: String, val key: String, val contents: String, val contentType: String ) fun putS3Object(s3Object: S3Object){ val putObjectRequest = PutObjectRequest.builder() .bucket(s3Object.bucket) .key(s3Object.key.toString()) .contentType(s3Object.contentType)...

What is the recommended way to label the positive and negative classes in a binary-class classification problem when using tflite in Android? I am working on an Android app that uses TensorFlow for image classification. I have two classes, positive and negative, and I am using a floatMap to assign values to these classes. However, I am confused about how to assign the values correctly. Here's an example of the code I am using: val positive = floatMap["0 Positive"] val negative = floatMap["1 Negative"] However, I am not sure if this is the correct way to assign the values. Should I be using this code instead? val negative =...

If an adapter is being used for displaying recursive data how can I access a button that is in the framelayout that the adapter is contained inside In my android application, for one of the screens in the app I am seeking to access a button that is on the FrameLayout that houses the view that the adapter is inside of. I have tried using. view!!.rootView.showAllBoundariesButton.setOnClickListener { showAllBoundaries() } Yet showAllBoundariesButton is still considered as null because the view and rootview is still referring the view items instead of the actual FrameLayout that houses the items int the adapter. Any help is appreciated.

How can I use this equation in my TextView? I'm currently sharing code between activities and on this activity I wrote a function with all the shared data and I am trying to put the outcome of this function in a TextView. But it says it's expecting CharSequence! and that I have type Double. Can someone explain please? Thank you! Here below is my code, you can see the shared variables that use the getIntExtra function. And the variable recommendedCalories is the equation I'm referring to. package com.example.optilife import...

Immutable property in kotlin with OpenApiGenerator What yaml directive allowed me to create a combination of mutable and immutable properties like shown below. data class Human(var sex:String, val name:String)

Kotlin MutableLiveData not changing I have a loginStatus value declared as MutableLiveData: val loginStatus = MutableLiveData() When the user logins, the value will be changed to true in the viewModel: withContext(Dispatchers.Main){ loginStatus.value = true } When the user logouts, the value is not changing to false even thought I make it false on logout function. withContext(Dispatchers.Main){ loginStatus.value = false } I use observeAsState to look over the values:...

How to start a TextView Invisiable once the Lifecycle hits onResume So I want to have this character count TextView start off Invisible whenever the Fragment comes into the foreground. I've tried a few ways but I think this code is really the one that's controlling what the view does Here's the Adapter class class SiteSurveyStepTwoAdapter(val viewModel: SiteSurveyTypeProgressViewModel) : BaseBindingAdapter() { companion object { const val DATA_VIEW_STEP_TWO_POS = 0...

Confusion about the use of Call<> and suspended functions in Android network requests with retrofit After searching for answers to an error where my function fun getRestaurants(): Call couldn't be made suspended, I found at this question that you can't combine a suspended function with a Call return, and my problem was solved. However, I still don't fully understand when to use Call and when to suspend the function, at least in this context where I am making @GET and @POST...

Android Studio (Kotlin) Bluetooth connection I am trying to connect an app I made to an arduino board with an adafruit bluetooth shield. I can connect to it manually through my mobile device's normal bluetooth, but I am trying to get the app to automatically connect to it on runtime. I am doing this via a background runnable thread. I keep getting this error: "W/System.err: java.io.IOException: read failed, socket might closed or timeout, read ret: -1". This error usually comes about the bluetooth device not being found and/or could not...

Kotlin MainActivity Imports not registering We are trying to add the thumbnail of a youtube video and link it to the youtube app through code. We have synced all implementations to the build.grade. (app) file but the imports just don't work and show up in red. Is it possible we are using old imports that just don't work anymore? We have tried looking up the imports and it did not result in anything. We tried retyping imports instead of copy pasting it into the IDE which worked before but it does not work now. Theres more errors within...

How to use findContours() in android kotlin? I am working on opencv in Kotlin and I want to detect the border of specific object that is on camera. I found out that there's findContours() to detect the border of object. But how can I use findContours() to detect the border of specific object using camera? any Ideas? I tried to find the border of object by using the QR code so that object that has qrcode can be detected. But I found out that findContours() can detect the border of object. So I think code that detects the qrcode doesn't...

Looking for better way to construct string in Text composition I'm learning Jetpack Compose and made a flash card app for my kid. Everything works and now I'm trying to refactor it to follow best practices. It's stated that you shouldn't use hard coded text and to place your strings in the res/values/strings.xml file. I've done that for all my strings but this one seems messy and overly complicated. Is there a better way to do this? text = "You scored $answersCorrect out of 10 in $totalTime seconds" //Original String text =...

use okhttp with junit4 cannot get response data I found a confuse problem when I use okhttp with Junit in a kotlin project by the way ,here is my environment: okhttp 4.9.0 junit 4.12 kotlin 1.4.20 here is my simple code: class SingleFileDownloadTest { @org.junit.Test fun testDownloadSingleFile() { val client = OkHttpClient() val request= Request.Builder().url("https://www.imooc.com/learn/1141").build() val call = client.newCall(request) //console outputs this log successfully //...

How can I create a typing animation without compose state(draw state) in jetpack compose? At the moment, this recomposes whenever the caretIndex changes. But, I found out this can lead UI freezing. Text( text = buildAnnotatedString { withStyle(style = SpanStyle(color = color)) { append(text.substring(0, caretIndex)) } withStyle(style = SpanStyle(color = Color.Transparent)) { append(text.substring(caretIndex, text.length)) } }, style = style, modifier = modifier...

Sinch incoming call is not received in android Sich client id was created and FCM google json files were also added But it not working private class SinchCallControllerListener implements CallControllerListener { @Override public void onIncomingCall(CallController callClient, Call call) { Log.d(TAG, "onIncomingCall: " + call.getCallId()); Intent intent = new Intent(SinchService.this, IncomingCallScreenActivity.class); intent.putExtra(EXTRA_ID, MESSAGE_ID); intent.putExtra(CALL_ID,...

Convert media uri to document uri My file picker returns the uri as content://media/picker/0/com.android.providers.media.photopicker/media/1000192721 but i need it as content://com.android.providers.media.documents/document/video%3A1000192721 How to do that ? What i tried is fun getDocumentUriFromMediaUri(context: Context, mediaUri: Uri): Uri? { val projection = arrayOf(MediaStore.Video.Media._ID) val selection = "${MediaStore.Video.Media.DATA} = ?" val selectionArgs = arrayOf(mediaUri.path) val cursor =...

Android Compose Material3 - How can one add both TopAppBar and Tabs under it in the same layout? I am using Android Studio with Jetpack Compose and Material 3. I want to create bot a topappbar and below it multiple tabs. In Material 3, Scaffold is defined as : @Composable fun Scaffold( modifier: Modifier = Modifier, topBar: @Composable () -> Unit = {}, bottomBar: @Composable () -> Unit = {}, snackbarHost: @Composable () -> Unit = {}, floatingActionButton: @Composable () -> Unit = {}, floatingActionButtonPosition: FabPosition = FabPosition.End,...

Regula Document Scanner showing Black screen before/after document scan process. - Android I have used Regula Document scanner SDK to scan documents and while scanning a particular document, Black screen shows for less than a half of second before/after scanning. What might be the issue? Code is as below: if (Common.regulaPermissionsGranted(this@DocumentScanActivity)) { startCamera() } startCamera() method is as below: private fun startCamera() { if (Instance().isReady) { showScanner() } } and below is the showSacnner() method: fun...

Android: Detect app state when goes to the background(not visible to the user) I'm trying to detect the app state when goes to the background(not visible) using Application.ActivityLifecycleCallbacks interface, the issue is that I'm not able to know when it is in this state, because onActivityStopped called immediately after onActivityPaused when I move the app from foreground to recent task or from foreground to background. I'm trying to do the following: public class MyApplication extends Application { @Override public void onCreate() {...

The more LibGDX Box2D bodies, the slower the falling speed I'm trying to write a test game with LibGDX Box2D, bodies can fall down quickly within the amount of 5, but if I change the amount to 10, 12 or more, the falling speed becomes slower and slower. I Cannot figure out why this happen that when the number of bodies increase, the falling speed decreases. As far as i understand, the amount of body should not affect the gravity, even if it is possible, it is only a dozen. class GameViewActivity : ApplicationAdapter() { companion object {...

Coil, Fresco and Glide can't decode jpeg image due to unknown image format I tried to use Coil, Glide and Fresco in Jetpack Compose to load and show but got an error due to decoding Firstly i checked Coil and got next error: java.lang.IllegalStateException: BitmapFactory returned a null bitmap. Often this means BitmapFactory could not decode the image data read from the input...

Getting location in android sometimes takes too long I am getting user location in android kotlin app with this code: val progressBar = findViewById(R.id.progressBar2) progressBar.visibility = View.VISIBLE var minLat = 0.00 var maxLat = 0.00 var minLng = 0.00 var maxLng = 0.00 locationManager = getSystemService(Context.LOCATION_SERVICE) as LocationManager locationListener = object : LocationListener { override fun onLocationChanged(location: Location) { locationManager?.removeUpdates(locationListener!!) val userLocation =...

how to get milliseconds from date in android as the title suggests, I want to get millisecond from a specific date, and this is the solution that I am using. Please suggest if there is a better way to do this if you know so. What is the need for Millisecond? For my use case, it was to limit the starting and ending time-period selection in an Android DatePickerDialog box. documentation. It can be done using dpd.datePicker.maxDate...

Kotlin with UTF-8 resource properties How can I configure Kotlin/Gradle to use Java 9 (1.9?), so that I can use UTF-8 encoded resource properties files? I'm loading the properties like this: ResourceBundle.getBundle(name, locale) I tried setting Java version like this: java { sourceCompatibility = JavaVersion.VERSION_19 targetCompatibility = JavaVersion.VERSION_19 } This results in the error: 'compileJava' task (current target is 19) and 'compileKotlin' task (current target is 1.8) jvm target compatibility should be...

Error creating shaded jar: Error in ASM processing class kotlin/collections/ArraysKt___ArraysKt.class: UTF8 string too large I am trying to upgrade kotlin version of shading project but i am getting below issue when i upgrade to kotlin 1.5.30: org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.pluginsmaven shade plugin3.4.1:shade (default) on project authentication-downstream-clients-shaded: Error creating shaded jar: Problem shading JAR /Users/aagrawal/.m2/repository/org/jetbrains/kotlin/kotlin-stdlib/1.5.30/kotlin-stdlib-1.5.30.jar entry...