Hide secret key with secret_gradle_plugin Hello I'm trying to hide a serverclientid but I'm getting this error : Manifest merger failed : Attribute meta-data#signInClientId@value at AndroidManifest.xml109-12:74 requires a placeholder substitution but no value for is provided. This is my local.properties GOOGLE_SIGN_IN_OPTIONS_SERVER_CLIENT_ID="XXXX" This is my manifest (is in another module) Then when trying to do this @Provides @Reusable @Named("serverClientId") fun...

Code for fetching the images from gallery and display them into grid recycler view inside the fragment is not working I want to load the gallery images from the phone gallery & display them all in the recycler view which is in the fragment viewpager as Grid view. In the logcat, the error is giving at all the three lines where ImageGallery class is used. And in Image Gallery class it is giving the error at : val imagecursor: Cursor? = context.contentResolver.query( MediaStore.Images.Media.EXTERNAL_CONTENT_URI, projection, null, null, orderBy+"DESC" ) Here's the...

Grab value from findByIdOrNull method How do I grab whatever value comes back from the JpaRepository findByIdOrNull method and return? @Service class IDLookupService( private val iDRepo: IdRepo, ) : Logging { fun lookupIdValue(email: String): IdModel? { var response = IdModel() runCatching { Failures.failsafeRun { iDRepo.findByIdOrNull(email) } }.onFailure { throw IDLookupException("Exception while searching DB for IDValue") }...

Bottom Navigation Bar Floating Button with action covering the whole screen - how to do this? I have an Android application with Bottom Navigation Bar. In the Main Activity I have a floating button and when I press it, I would like to open a Fragment (or another activity?) that will cover the whole screen (the Bottom NavBar and other content will be below my new opened fragment). I would like to add that this newly opened fragment will be used for adding some item and when the user fills all fileds like name, weight etc. and click "add", the fragment should be closed and we should...

How to extend class in Kotlin while using Room? I have two data class Product and ProductInfo, ProductInfo is an extention of Product but how it should be writtein in Kotlin by using Room as if i try to use interface instead data class on Product i'm unable to set the @PrimaryKey annotation? @Entity(tableName = "articoli") data class Articoli ( @PrimaryKey var codiceArticolo: String, var descrizione: String, var prezzoVendita: Float, var prezzoAcquisto: Float, var unitaMisura: String, ) data class InfoArticoli(...

Singleton from Dagger Hilt doesn't found in JetpackCompose project I was developing an App where I try to make some practices with Jetpack Compose, and I've tried to added Dagger Hilt as dependency injector too. My problems comes, when I try to make use of @Singleton annotation is doesn'tfound, although the other clases of Dagger libraries works fine. My project build gradle is the following: buildscript { apply from: './dependencies.gradle' repositories { google() mavenCentral() maven { url...

Speaker not working during calls on Android 11 Problem: Im trying to enable speaker during a call, but the below code only works on Android 8,9 and Android 10. And in devices with Android 11, doesn't work. Does anyone know a solution that works on Android 11? Code: private fun enableSpeaker() { audioManager?.let { if (!it.isSpeakerphoneOn) { audioManager!!.mode = AudioManager.MODE_NORMAL audioManager!!.mode = AudioManager.MODE_IN_COMMUNICATION...

How to pass from kotlin data class to C struct with JNI? I have to create an Android library using C code (which is just a Kotlin and JNI wrapper around three C functions). But as I'm completely new to JNI, I'm struggling with one thing: How do you back and forth between C struct and Kotlin data class with JNI? Here is the small C library I need to work with: typedef struct { double x, y, z; } POINT3DZ; char *encode_to_char(const POINT3DZ *p, int length); //POINT3DZ *p is a pointer to an array POINT3DZ *get_point(const POINT3DZ *p, int length,...

error when connect or write to influxdb database I'm trying to connect to influxdb database but I get this error com.influxdb.exceptions.InfluxException: java.security.cert.CertPathValidatorException: Trust anchor for certification path not found. This occurs when I call ` val writeApi = client.getWriteKotlinApi() val point = Point .measurement("mem") .addTag("host", "host1") .addField("used_percent", 23.43234543)...

Android NotificationListenerService doesn't receive some kinds of MMS notification I am implementing a function that monitors MMS in real time and acts when a new MMS is received. As a method of monitoring MMS, ContentObserver was initially selected, but it seemed difficult to implement within a short period of time, so while looking for another method, NotificationListenerService was found. The NotificationListener Service I implemented is as follows. class NotificationService : NotificationListenerService() { override fun onNotificationRemoved(sbn:...

Failed to convert a value of type java.lang.String to int using Kotlin I am trying to find some of the total prices from my collects but it seems there is a data mismatch somewhere I can't solve so if anyone can assist me to do so I will be thankful val id = auth.currentUser?.uid.toString() dref = FirebaseDatabase.getInstance().getReference("tempCart").child(id) dref.addValueEventListener(object : ValueEventListener { override fun onDataChange(snapshot: DataSnapshot) { if(snapshot.exists()){ for (cartSnapshot in snapshot.children){...

I want to make the code that changes the sign of the number when the button is pressed but it returns null package com.example.benimhesapmakinesi import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import android.view.View import android.widget.Button import android.widget.TextView class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) } var operator="*" var oldNumber="" var newOperator=true var powResult:Int=1...

Decorator Patterns in Kotlin I'm trying to practice decorator patterns in Kotlin and one of my exercises is to implement a decorator that returns the temperature in addition to an index which tells one the "count" of the measurement for that temperature, so f.e. 2.0 3.0 3.0 ... ... ... 2.0 I tried counting manually with a var that increments each time, but I can't figure out how to make the console output come out like in the example. Main function has to look like this, so I can't just put a println in the thermometer...

Android app communication with local apache server I am new to Android dev, I have started using Android Studio with Kotlin few days. I run into an issue today which is : how can my app communicate with my local server (XAMPP : Apache and MYSQL) I am running Windows 10, and using my real physical phone instead of the emulator (API 30) since the emulator works so slow for me. I have a simple php app that only returns "hi", I tried many ways to use AJAX requests but the one closest to working with is Android Volley, here is my code: val...

kotlinx decodeFromString to 'ArrayList' vs 'CustomClass extending ArrayList' Why does this work: val string = "[1, 2, 3]" val result: ArrayList = json.decodeFromString(string) but this doesn't: @Serializable class MyClass : ArrayList() val string = "[1, 2, 3]" val myClass: MyClass = json.decodeFromString("string") throws this error: Expected start of the object '{', but had 'EOF' instead MyClass is also an ArrayList so I'm unsure why it doesn't work

Difference between "parallelStream()" and "asSequence().asStream().parallel()" Using kotlin 1.6.10 it seems that parallelStream() and asSequence().asStream().parallel() are not behaving the same. The latter doesn't seem to parallelize. Here is an example code snippet, demonstrating the issue: import java.util.stream.Collectors.toList import kotlin.streams.asStream import java.util.Calendar fun main() { println("Available processors: ${Runtime.getRuntime().availableProcessors()}") val numbers = (10 downTo 0).toList() println("Using parallelStream:")...

What is Firestore component is not present and how to fix it What is Unable to start activity ComponentInfo: java.lang.NullPointerException: Firestore component is not present Recently i have converted code from java to Kotlin. Few days it worked well but from last 1 week i don't know why but whenever i run the application below error is coming. Kotlin error - java.lang.RuntimeException: Unable to start activity ComponentInfo: java.lang.NullPointerException: Firestore component is not present Below is my app gradle plugins { id...

How to Parcelize a MutableList in kotlin? I have an App that lets users drag and draw boxes on a custom view. I want to persist the state of these boxes(list of boxes) across orientation change using onSavedInstanceState(): Parcelable and onRestoreInstanceState(state: Parcelable). However, I don't know how to store a MutableList because the only available function is putParcelableArrayList. Please how do I parcelize a Mutable List to persist the boxes across rotation? I know the docs said its possible but I don't know how to. Here is...

net: ERR_UNKNOWN_URL_SCHEME in Android Webview codes not working in Kotlin I tried the codes from the forum all of which is in Java. It was converted to Kotlin by IDE but it's not working. I've just started learning Android. Please help me with this. I've attached the converted code below. Also, I added this - val webUrl = webView.url if (webUrl != null) { shouldOverrideUrlLoading(webView,webUrl) } inside OnCreate. Not sure if that's correct or not. Below is the code--- private fun shouldOverrideUrlLoading(view: WebView, url: String) {...

null pointer when the intent.getExtra after change fragment and go back to it agin from bottomnavigationview I have and array list of custom objects and I pass it between the activities with no problem when I go to an activity that holds two fragments I got null pointer execption from courses = intent.getSerializableExtra("coursesBUNDLE") as ArrayList? and Hera how I pass it when the bottom NavigationView ``

Android functions must be marked with the @Composable I have a @Composable function that works perfectly. However, by adding LocalInspectionMode.current, it produces a strange error. @Composable fun MessageCard(name: String){ if(LocalInspectionMode.current){ Text("Hello $name!") } else { Text("Goodbye $name!") } } The error message: Functions which invoke @Composable functions must be marked with the @Composable annotation Obviously, the function does contain the @Composable annotation. Any help? Thanks

Failure delivering result ResultInfo to activity : java.lang.NullPointerException: Activity must not be null Hi I was working on a application that authenticate using google but I got an error after running it in the emulator. I don't what exactly is going on my code because I pasted documentation's codes without any change. Here is the error which I've got: java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1302730037, result=-1, data=Intent { (has extras) }} to activity {com.example.platform/com.example.platform.MainActivity}: java.lang.NullPointerException:...

ViewPager with Bottom Navigation Wont Call onViewCreated Method Until select a Bottom Tab Sorry for the complicated question I don't know how to ask that I have a Bottom Tabbar set to index 3 when the app first launch and in index 2 of the BottomBar there is a Fragment and inside that Fragment is a ViewPager with TabLayout and two other Fragments and everything is working fine but there is an issue that there is data coming from database to the TabLayout Fragments and should call onViewCreated when app launch but it won't call unless i select the tabbar that holds the ViewPager...

Kotlin Android Studio: org.junit.ComparisonFailure with NBSP I have this code @Test fun price_twelve_cupcakes() { val viewModel = OrderViewModel() viewModel.setQuantity(12) viewModel.price.observeForever {} assertEquals("$27,00", viewModel.price.value) } And I get this And This

Can't Update child item in NestedRecyclerView How do I update the child when clicking on the categories item or when doing a search like the one in the picture I am updating the data from Viewmodel but the child element does not update I also tried calling the adapter child and updating it directly, but to no avail This is the code, if you need any additional details, I will add it down In ParentAdapter class BaseAdapter(private val...

Bottom navigation bar listener not working So i just got started with android development a couple weeks ago, while trying to make navigation between two fragments with a bottom nav bar, for some reasons the click listener is just not working, no errors, no warnings, compiles no problem but it might be some logic problem? here's the code: class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main)...

Composable invocations can only happen from the context of a @Composable function I have a composable function that i need to call after clicking a button but it keeps showing an error that composables cannot be executed from button clicks , can anyone please guide me to solve this issue Thank you This is my code Box(contentAlignment = Alignment.Center) { Button(onClick = { // This is a composable function that i need to call SignUpNewUser(email,fullName,country,password) } ,modifier =...

How to use locationManager with Maps SDK for Android simulating an uber app like map How to use locationManager with Maps SDK for Android simulating an uber app like map Follows my class that takes the location but it returns a latitude and longitude with values 0.0 class LocationUtil(context: Context) { private val locationManager = context.getSystemService(Context.LOCATION_SERVICE) as LocationManager private var locationListener: LocationListener? = null val locationStateFlow = MutableStateFlow(Location(LocationManager.GPS_PROVIDER)) val gpsProviderState =...

How to set an app's volume to follow alarm volume and not media volume Android Is there a way to link the volume of an app to follow the phones alarm volume and not its media volume? I have found a few answers on SO but none have worked so far. When media volume is off the alarm should still ring. I don't know if all android phones have three volume options, but I'm sure most have call, media and alarm. This is what I have right now: class AlarmRingService : Service() { private var mPlayer: MediaPlayer? = null @RequiresApi(Build.VERSION_CODES.O) override fun...

Android: Custom annotation the requires calling of a method depending on the set value of the annotated variable Something that is similar to @RequiresPermission("android.permission.INTERNET") that will ask for permission when a certain annotated method is used. Can you create a custom annotation that will require the user to call a method after setting a value of the annotated variable? Example protected abstract var interceptBackPress: Boolean I want to require or warn the consumer that when interceptBackPress is set to false, they will need to call a method requireActivity().onBackPressed() as well.