Android - How to access data in fragments from base activity? I'm having a hard time learning Android. I have a small (common I think) problem. I have a base activity that has tabs and a "SAVE" button in toolbar. I need to access data in tabs (fragments) from the "SAVE" button but I can't figure out how. I have read this but questions like this but I don't understand: Android: Access a fragment instance from MainActivity Base activity looks...

Databinding listView footer in Kotlin Android studio is telling me to change to data binding on my layouts. It works fine for Fragments and dialogs already, but I cannot figure out how to implement it to listView footer. val myListAdapter = AdsAdapter(requireActivity(), returnData) val lbind = AdlistFooterBinding.inflate(layoutInflater, null, false) myListAdapter.delegate = this bind.myAdsListView.adapter = myListAdapter bind.myAdsListView.invalidate() if (page > 0 ||...

Android Deep link: Associating a web link with a destination I am designing a login sequence. The first fragment that loads is loginFragment. I have created a deeplink that will be emailed to users when they apply to send link to reset password. This email link (deeplink) should take users to the newPassword Fragment, but instead it is taking users to the first fragment i.e., loginFragment. Here is the code: In AndroidManifest.xml In nav_graph.xml <a...

Android RoleManager remove role RoleManager.ROLE_SMS for own package I have sms backup app that backup and restore SMS only so when i restore sms I need to set default Massage App. then after Restore i don't need to stay default Massage App. So my question is how to remove my app default to Massage App. and also for old version belove Android Q. Code - fun saveSms(values: ContentValues) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) { val roleManager = getSystemService(RoleManager::class.java) if...

Open contact in kotlin in the contacts app I am new to kotlin, and I am using flutter and writing native code in kotlin to try and open a contact. At the moment I am using this code var intent = Intent(Intent.ACTION_DEFAULT, ContactsContract.Contacts.CONTENT_URI); startActivityForResult(intent, 1); This opens contacts, but I am trying to open a specific contact.

How to safeargs in viewModel Kotlin Android? I have problem with my MVVM structure. I create apps and pass data between fragment. Now is work fine, but i need add this logic to my ViewModel. This is my NotesClickFragment: @AndroidEntryPoint class NotesClickFragment : Fragment(R.layout.fragment_click_notes) { private val args by navArgs() private val viewModel: NotesClickViewModel by viewModels() override fun onViewCreated(view: View, savedInstanceState: Bundle?) { super.onViewCreated(view, savedInstanceState)...

How to add animation to the viewPager in Kotlin? *this is my Activity pager * private const val TAG = "CarpagerActivity" var carList: ArrayList? = null var mSerializer : JsonSerializer? = null class CarPagerActivity : AppCompatActivity(){ override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_car_pager) mSerializer = JsonSerializer("CarTrinkApp.json", applicationContext) try { carList = mSerializer!!.load() } catch (e:...

How to use `setPopUpTo()` with deep link using Navgiation component android I know that we can use setPopUpTo() with destinationId Like this: NavOptions.Builder() .setPopUpTo(destinationId,false) .build() But I need to clear backStack of Navigation component and I have only deep link of destination fragment (because I use modular architecture in my app) Anybody can give me a some hint?

Instrumentation Test not launching in Android Studio So, I have this test class to test my Fragment but when I'm running the test it's just loading in the android studio and not launching the actual test here is my code. After a while it just shows Test framework quit unexpectedly Base Test class abstract class BaseEspressoTest { @Rule @JvmField val activityRule = ActivityTestRule(MainActivity::class.java, false, true) // Create a mock NavController val mockNavController: NavController = mock(NavController::class.java)...

Kotlin Compiler Plugin: How to check if a property has an annotation? I am creating a Kotlin compiler plugin in which I need to check if a property of a data class has an annotation: data class User( @MyAnnotation val name: String ) I override DelegatingClassBuilder.newField in the following way: internal class MyClassBuilder( delegateBuilder: ClassBuilder ) : DelegatingClassBuilder(delegateBuilder) { override fun newField( origin: JvmDeclarationOrigin, access: Int, name: String, desc: String,...

Gradle annotation processor order (Android) I'm writing a library based on code generation. This library generating dagger's module via annotations. How do I run my annotation processor before dagger's code generation? Now it crashes on build because dagger trying to build the component before modules was generated.

Access variable from Mainactivity in index.js i try to use a variable "userID" from Mainactivity but not working, some one maybe know how. there is my activity and the a part from index.js i save this useid over the index.html. this part is working fine with another variable Mainactivity.java: public class MainActivity extends CordovaActivity { public static String userId; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);...

Button saves rating to Shared Preferences and shows previous ratings when activity is revisited MainActivity has RecyclerView items, when item is clicked it goes to detailed activity which has RatingBar and back Button saves rating to Shared Preferences and shows previous ratings when activity is revisited. I used intent.putExtra("KEY",item.keyName) in MainActivity so I can use this string as items map key when saving rating from Rating Bar to Shared Preferences. But when RecyclerView item is clicked app is crashing, and I'm getting kotlin.KotlinNullPointerException error. This is the...

Cannot consume message I have an API which takes a Message object as input produces a message to Kafka. I wrote a consumer aswell, which consumes the message and saves it to the db. My producer works as intended but the consumer does not work, For now I wanted to log a String when the message is consumed, but it is never consumed somehow, because I do not get the String. I am running this docker-compose file: version: '3.2' services: zookeeper: image: confluentinc/cp-zookeeper:latest restart: always...

Android motion scene for a drawable I am new to MotionLayout. I followed a simple example where the MotionLayout contains a single element say Button and this was quite easy to generate a MotionScene for it. However I have a MotionLayout which has several elements in it. The layout looks like this - The problem is when the floating action button with id like_button is pressed, I want the imageview with id like_image to be...

Extract audio file details from URL(mp3 file) To get audio file(mp3) details from URL I am using JAudioTagger in my android app but I am unable to get details. My Code: val audioFile = AudioFileIO.read(Objects.requireNonNull(File("https://www.soundhelix.com/examples/mp3/SoundHelix-Song-1.mp3"))) Log.d(TAG, "title: ${audioFile.tag.getFirst(FieldKey.TITLE)}") Log.d(TAG, "artist: ${audioFile.tag.getFirst(FieldKey.ARTIST)}") Log.d(TAG, "album: ${audioFile.tag.getFirst(FieldKey.ALBUM)}") Log.d(TAG, "duration:...

show list like News subtitles in tv in android I want to show list like News subtitles in tv , and when click user each item of list ,this is go to another page with news_code. i Implementation this with marquee Textview but cannot click on each item because this is a one textview and not list and try to use marquee list but this is not suitable . can you help me? I desperately need help. thanks

Error: W/ConnectionTracker: Exception thrown while unbinding java.lang.IllegalArgumentException: Service not registered: lt@ad6f640 I am getting this error after 3-4 seconds of app start, even if I changed nothing in the code part of application. And the application freezes. Why? Can someone tell? W/ConnectionTracker: Exception thrown while unbinding java.lang.IllegalArgumentException: Service not registered: lt@ad6f640 at android.app.LoadedApk.forgetServiceDispatcher(LoadedApk.java:1029) at android.app.ContextImpl.unbindService(ContextImpl.java:1808) at...

Convert String to Integer List in Kotlin I want to make function for typeconverter room. The original data is in List and i store it as String in database. My code and the output is like this: fun main() { val genreIds = listOf(28, 80) val stringFromList = fromList(genreIds) val stringToList = toList(stringFromList) println(genreIds) // output: [28, 80] println(stringFromList) // output: [28, 80] println(stringToList) // output: [91, 50, 56, 44, 32, 56, 48, 93] } fun fromList(genreIds: List): String =...

Android with Kotlin best ways to storage a custom class this is the first time that I need to store some data permanently so I would like some suggestions before to proceed. I've read that there are different ways to store data on an Android device: Internal storage Shared Preference (but if I've understood is just for symple data like an option) Shared storage (but I don't need to share data among other apps) Database I can't understand what is the best option for me between the first and the last. My case I have a list of book with title,...

How to create a library for android which deals with camera? I want to create my own camera app which can take multiple photos and crop them afterwards. I want to get started by creating something like this Image cropper how do I get started?

Kotlin Nested AutoCompleteTextView inside RecycleView I'm trying to show autocompleteTextView inside recycleView items. RecycleView work with normal textView, but if i try to switch to autocompleteTextView i don't understand how to set his adapter inside recycleview adapter. P.s. The String Array comes from a API so a must set by coding RecycleView adapter(AdapterModifyOrdini.kt) class AdapterModifyOrdini( private val listOrdine: List, private var listner :OnItemClickListener, private var listNameProduct:Array ):...

How to inject vararg variable using hilt How to inject a mutable variable using hilt? Please refer to the code below open class BaseUseCase @Inject constructor( private val baseRepository: BaseRepository ) { } // Possible open class BaseViewModel @ViewModelInject constructor( private val baseUseCase: BaseUseCase ) : ViewModel() { } // Impossible (How to make it possible) open class BaseViewModel @ViewModelInject constructor( private vararg val baseUseCase: BaseUseCase ) : ViewModel() { }

How to access a fab in host activity from fragment in Kotlin? I want to acces the host main activity fab from another fragment and perform some action. How can I do this in Kotlin? MainActivity

How to solve java.lang.SecurityException while trying to take a photo using camera in Kotlin? I am trying to take a photo in kotlin with the following function: @JavascriptInterface fun generate() { val photoUri = Uri.fromFile(photo) val imageCaptureIntent = Intent(MediaStore.ACTION_IMAGE_CAPTURE) .addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION) .putExtra(MediaStore.EXTRA_OUTPUT, photoUri) startActivityForResult(imageCaptureIntent, GO_TO_CARD_REQUEST_CODE) } My manifest has following permissions and features granted: When starting the activity an...

Is there a compile-time dependency injection tool that supports generics for kotlin (or java)? All runtime DI (guice, spring, koin, kodein) do support generics. Dagger 2 - which is only DI compile-time tool that I know - doesn't support generics. Is there a compile-time dependency injection tool that supports generics for kotlin (or java)?

Kotlin how to launch an async processing from android.app.Application I am new to Kotlin and trying to start an async backend call inside android.app.Application import android.app.Application; class App: Application { override fun onCreate() { super.onCreate() fetchDataFromBackend() } fun fetchDataFromBackend() { lifecycleScope.launch { // Fetches data from backed. } } } The problem is that lifecycleScope.launch cannot be used from an Application, I have done the same from Activity/Fragments and viewModelScope for my...

ItemDecoration applies only after restart activity when using ListAdapter When I was using RecyclerView, ItemDecoration worked perfectly. For now, after moving to ListAdapter my item decorations only appears after recreating activity. Actually, I understand why this is happening. When I was using RecyclerView, I used notifyDataSetChanged() to update my list. Now I am just using internal submitList, which uses methods to update only one item(not the whole dataset). But what am I supposed to do now? Downgrade to RecyclerView and its notifyDataSetChanged()? Is there...

Android Testing the Toast in a Fragment Launched by the launchFragmentInContainer Doesn't Work My test is never running to completion and I have absolutely no idea why. I can see the toast displayed on my phone's screen. There is absolutely nothing in the logs. @RunWith(AndroidJUnit4::class) @SmallTest class BaseDataFragmentUITest { @Test fun isDisplayingToastOnlyOnceWhenFAILED_TO_UPDATE() { var dataState = BaseRepository.DataState.FAILED_TO_UPDATE val fragmentScenario = launchFragmentInContainer { UITestBaseDataFragmentImp(dataState) }...

Kotlin: Try, catch, and only finally if error I have a block of code which can throw & catch errors like so try { } catch (e: FooException) { } catch (e: BarException) { } finally { } and have some code which only needs to run if at least one error was caught, perhaps by some imaginary catchfinally block. Other than storing an errorCaught variable and checking it in finally, is there a more readable alternative?