Firebase Persistance Data not work offline in Android kotlin app I'm creating a chat app, and I'm trying to save messages so that users can see them even offline. The messages are inside the Firebase Real Time DB. I tried following the documentation and some other questions/answers found. I put these two lines of code in the fragments and activity that I use: Firebase.database.setPersistenceEnabled(true) UtilsPersistance.database object UtilsPersistance { private var mDatabase: FirebaseDatabase? = null val database: FirebaseDatabase?...

android.util.AndroidRuntimeException: Animators may only be run on Looper threads I am getting an error in my project. What is the problem? can you help me? android.util.AndroidRuntimeException: Animators may only be run on Looper threads at com.nisaefendioglu.movieapp.ui.DetailMovieActivity$addToFav$1.invokeSuspend(DetailMovieActivity.kt:65) MyCode : DetailMovieActivity: class DetailMovieActivity : AppCompatActivity() { private lateinit var binding: ActivityDetailMovieBinding var b:Bundle?=null private lateinit var appDb : MovieDatabase override fun...

Pager indcater in Android Compose I am new with android Compose Can Anyone told me if there any way to implement Page indcater in compose without third library ? I am using material design 3 I have tried many solutions But its Dublicated I try a way with state pager but now its Dublicated 🙂

How to specify arguments for a Python api using Kotlin? I made a python api that I'm trying to get my app to connect to, but for the login function I need to send the username and password but I'm not sure how to do this. This is the python code: username = data.get('username') email = data.get('email') password = data.get('password') And the Kotlin Code: private fun sendData(username:String, password:String): Thread { return Thread { val url = URL("https://127.0.0.1:5000/login") val...

How can I use this permission MANAGE_EXTERNAL_STORAGE in my app? The features of the application are storing files of privacy and importance on the user’s account, and the files are saved in the server, and the user can download them, upload more, delete them, and share them Issue found: Access to device storage not required The feature you identified does not require unrestricted access to device storage. There are other privacy friendly options for accessing files in shared storage, such as using the system file picker, or, depending on the use case, you...

How to do update? I have these entities @Entity(name = "inspiration") class InspirationEntity( @Id var uuid: UUID? = null, @Column(name = "display_name") var displayName: String, @CreationTimestamp @Column(name = "created_at") @Temporal(TemporalType.TIMESTAMP) var createdAt: Date?, @UpdateTimestamp @Temporal(TemporalType.TIMESTAMP) @Column(name = "last_modified_date") var lastModifiedDate: Date?, @OneToMany(targetEntity = BaseSliderEntity::class)...

Why can't I write a "@" in android studio anymore? first of all I am sorry for this stupid question. I am learning android development right now and already startet to program some simple apps. Today I wanted to start a new app and all of a sudden I can't write a "@" (option + L) in android studio anymore. I already reinstalled android studio and reseted android studio to its default settings. I am programming on Mac OS and use the Kotlin language.

Android Testing - Error - Room Database - 'META-INF.md' - Packaging Options Doesn't Work I have been getting this error when trying to test my Room database. I tried some solutions like adding the packaginOptions block in the gradle file, but that just made the tests not run at all. Not sure what is going on. Error (without packagingOptions solution): Execution failed for task 'appmergeDebugAndroidTestJavaResource'. A failure occurred while executing com.android.build.gradle.internal.tasks.MergeJavaResWorkAction 6 files found with path 'META-INF/LICENSE.md' from inputs: -...

Pick image from Android phone and store it in mobile application Hi I need to store fitness client pictures to my application (Android). I'm doing my app in Compose and I have my own server (Ktor with MySQL). Code: This is code for XML private fun pickImageFromGallery() { val intent = Intent(Intent.ACTION_PICK) intent.type = "image/*" startActivityForResult(intent, IMAGE_REQUEST_CODE) } override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) { super.onActivityResult(requestCode, resultCode,...

Perform an if-else statement in Android, and the application crashes on button click I am currently working on a currency converter in Android Studio. The error that I faced was that if I were to put the current input, which is "US Dollars" in the editTextCurrency box (enter currency box) and click on the convert button, the application would crash. However, if I were to put a wrong input for example "US" in the editTextCurrency(Enter currency box), the application did not crash but print out the message on the TextView which is intended to. I am not sure how I should solve...

Android studio crashing after implement a adapter to view a list using recycler view I have added a recycler view to show a list of favorite students and whenever i clicked on my starred fragment the app crashes and closed. Here is the logcat: 2023-01-20 234302.657 10663-10680/? E/Parcel: Reading a NULL string not supported here. 2023-01-20 234305.632 14506-14552/? E/Parcel: Reading a NULL string not supported here. 2023-01-20 234306.960 27830-27830/? E/NetCtrlSig: tempServiceState is null0 2023-01-20 234306.960 27830-27830/? E/NetCtrlSig: tempServiceState is null1...

Display another composable layout if one is two wide for screen Context: In the app, there are dynamic questions from the backend asking users to select an option, usually two or three options. The first choice design is to display the options as buttons in a row. But sometimes, the button texts could be very long that the buttons or the texts are not displayed properly on a mobile phone. In this case, the options should be displayed as a dropdown. What tried: To get the width of the button row, I tried to create a mutableState isBtnStyle var, pass a...

Implement rule to get values ​from json This function searches in a Json and brings the number called document that is in the root of the file @Service class CustomerService( private val cardUtils: CardUtils, private val customerService: CustomerService, ) : CheckCustomerCards { @LogInfo(logParameters = true) override fun checkCardStatus(@LogParameter customerId: UUID): Mono = customerServiceClient.fetchCustomerData(StringIdFormatter.convertToPrefixedId(customerId)) //If the type...

How to simulate typing with char-by-char delay using InputConnection? I need to simulate typing text with char-by-char delays using soft input keyboard on a WebView. I can't use WebView#dispatchKeyEvent because it's not suitable for typing Unicode text and does not simulate soft input keyboard. I am overriding <a...

How can I apply a condition on a lambda expression in kotlin? I want to apply a condition using higher-order infix extension function on a list of pair. I want my condition to show me the first numbers of the pair. Specifically, show those first numbers whose sum with their second number is 5. T this is the code I have written so far fun main() { infix fun List.takeFirstsBy( condition: // i need help in this line to apply a condition on list of pair ):List{ } } I don't know how to write a conditional...

Mockito test case error in android studio Hello everyone. I'm working on a simple project. I need to use Mockito and test the app. Problem: In this particular case I have a simple login screen which has 2 edit texts (for email and password) and a submit button. When I enter the email and password and click on the submit button I will check firebase realtime database. If the data is correct then user can log into the app, else I show an error message. I have added the Login Activity code and test case code below. I have tried creating...

Kotlin: can I get an object inside an object using variable whose value is the name of an object? The title is probably confusing, but I didn't know how to explain it better. Usually I use javascript, and in it you can have this: var objectVar = "myOtherVariable"; var someObject = { myVariable: "something", myOtherVariable: "something else" } // writes out 'something else' console.log(someObject[objectVar]) Is it possible to do something like this in kotlin? For instance, if you have val myVar = "a" object someObject{ var a: MutableSet = mutableSetOf() var b: MutableSet...

Android: Kotlin Room how to take unique data from table and use this in recycle view I have a table with lessons and I need to select all the unique group names from there to display them in the recycle view Lesson data class @Entity(tableName = "lesson_table") data class Lesson ( @PrimaryKey(autoGenerate = true) val id: Int?, @ColumnInfo(name = "lesson_name") val lessonName: String?, @ColumnInfo(name = "Group_name") val groupName: String?, @ColumnInfo(name = "day") val day: Int? ) LessonDAO @Dao interface LessonDao { @Query("SELECT * FROM...

How to continuously mock a GPS location on Android? How do I continuously mock a location on Android in 2023? The following code does not work. Only thing that changed is that the blue dot in Google Maps becomes grey instead of blue at the real location. I added all the needed permissions and selected my app as mock location in Developer Settings. Other answers on SO are now outdated due to Google introducing new updates. import android.location.Location import android.os.Build import android.os.Bundle import android.os.SystemClock import...

How to get a list of files that already exist on the device with Kotlin? I'm trying to get a list of files from directories, but I never get the name of files that already exist, it just returns the files I created with my app. For example, inside the Documents folder I have 3 pdf files that I loaded from Android Studio and a test.txt that my app created, but when I run the code to list the files, only test.txt appears. I already put the permissions in the Manifest, what do I need to do for it to work? import androidx.appcompat.app.AppCompatActivity import...

How can I run validation when my users exit textField in compose? I have a function that will check if my textField has any issues fun hasError(textFieldLabel: String):Boolean{} I want this function to run only when the user has finished entering text. When the user exists the text field, we assume they're finished and I run hasError() on that field Here is what didn't work for me val focusManager = LocalFocusManager.current focusManager.moveFocus(FocusDirection.Next) FocusDirection.Next Only moves the focus when you decide its appropriate, but doesn't...

How to change UI elements from a class in Kotlin? So the situation is that I have a bluetooth class where I get some values, I want to display those values inside the UI, but for some reason I can't figure out how to do it. In swift I would do it with an observable object, but in Kotlin I couldnt really find something similar, or I could at least not get it to work. Is there an easy way to do this (setting UI from a class?) and is there something special I have to do inside the class? I was quite dumbfounded by how difficult it is / how hard...

How can i open up a new activity from cardview with my current build If I should change it from card to maybe a button for easier code please let me know, but I have tried multiple ways with card view and none seem to be working for me. Im trying to open a new activity when i click the cardview for DashboardTmsActivity. current error is this MainActivity.kt Modifier 'override' is not applicable to 'local function':19 Unresolved reference: activity Unresolved reference: activity:23 here is my current code. MainActivity.kt package com.cameron.armymaintenance...

Can I trust my global variables to always be preserved during screen rotation? (Android / Kotlin) Is it bad practice to use Global variables instead of bundles to preserve state between screen rotations? I really like just using global variables to keep state. But since everything suggests using bundles, should I do that? I don't know what pitfalls I could be thinking of. Here is a snippet of code that demonstrates global variables dont change. I have to check that the LEVEL_DEFS list is 0 before adding to it, otherwise every screen rotation adds duplicate levels (where I originally...

When I delete a parent in a one to many relationship using ROOM database and get back to the fragment that has childs THE APP CRASHES 2023-01-21 014714.636 19192-19256/com.example.doeasy E/AndroidRuntime: FATAL EXCEPTION: DefaultDispatcher-worker-1 Process: com.example.doeasy, PID: 19192 java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String com.example.doeasy.database.entities.Project.getProjectColor()' on a null object reference at...

Weird issue with Samsung keyboard on Android with Libgdx In my game, when a textfield is touched, the view moves up along with the keyboard. Here's the code in AndroidLauncher: onCreate(){ //other codes... setListenerToRootView() } private fun setListenerToRootView() { val activityRootView: View = window.decorView.findViewById(content) activityRootView.viewTreeObserver.addOnGlobalLayoutListener(keyboardLayoutListener) } private var keyboardLayoutListener: OnGlobalLayoutListener? = OnGlobalLayoutListener { val visibleDisplayFrame =...

How to change border width of a particular side only in jetpack compose? I am trying to achieve the below layout There is no way to set individual border width in jetpack compose This is my code Row( modifier = Modifier .border(width = 1.dp, shape = RoundedCornerShape(4.dp), color = Purple3) .padding(10.dp), verticalAlignment = Alignment.CenterVertically ) {...

Recyclerview is not showing any data Kotlin I want to populate a RecyclerView with data from Firebase. I tried something, I built an Adapter and tried to populate the RecyclerView but not showing any data in the RecyclerView and I get no errors. In firebase console shows like the query is working but in the simulator not show anything and i dont ger errors. [![The Recyclerview from the simulator][1]][1] My layout:

How to achieve multiple header and body elements list for a LazyColumn in compose? I want to achieve the following layout All the headers like Claim requested credentials, Claim received credentials, Pending requests etc are dynamic and will be coming from backend and the items for each header like Module 1:... etc are dynamic as well. Also I need the card to encapsulate both Header and the Body item. Here is what I have tried LazyColumn( modifier = Modifier .offset(x = 0.dp, y...

Room DAO keeps returning NULL In room, I have a dao to something like this: @Dao interface FacultyDao { @Query("select * from faculty") fun getAll(): LiveData ... } And inside the repository, I'm simply calling this method and logging it: class FacultyRepository(application: Application) { private val facultyDao: FacultyDao init { val db: AppDB = AppDB.getInstance(application) facultyDao = db.facultyDao() } fun getAllFaculty(): LiveData { val v =...