Android Studio Beginner here I am taking the coursera course for mobile application development and I am doing my first project, my build launches successfully then immediately crashes. I am not sure why it is doing this so any insight into the matter would be greatly appreciated. Below is my build... package com.example.video_player import android.R import android.net.Uri import android.net.Uri.* import android.os.Bundle import android.widget.MediaController import android.widget.VideoView import...

gradle - kotlin, multiple exec tasks Given an Exec gradle task my-custom-cli-task in a gradle kotlin build script defined by task("my-custom-cli-task") { workingdir(projectDir) commandLine("my-cli-command","somefile.someextension") } I need to run this for a set of project files, defined by val sourcefileSet = fileTree("$projectDir/") { include("**/*.someextension") } All theses commands could be run in parallel. (Note : I'm aware of <a...

How to get the calculated value without libraries of string math opertaion on kotlin? What I am trying to is from "6+4/2-1*0" get the math answer wich would be "6+2-1" then "7" I managed to remove brackets if there were any and also the consecutives brakets removal so at the end I just have a line with basic operators. I need to do it without external libraries Any help or suggestion would be great, thanks

How do you run a kotlin file that accesses another file in vs code on vs code, i have a folder called master on my desktop with 2 kotlin files, main.kt and foo.kt. main.kt's code import master fun main() { println("hello") foo() } foo.kt's code: import master fun foo(){ println("code from foo") } however, when i run kotlinc hello.kt -d hello.jar on the terminal of vs code, it says error: unresolved reference: foo how can i resolve this? am i naming the packages wrong? I just want to run a very light kotlin package.

Refreshing fragment by using NavigationComponents I have a few fragments, and I'd like to restart them by using SwipeRefreshLayout. I've managed to restart the Fragment, but instead of displaying the Fragment, where the popBackStack() were called, the app moving to the first fragment. I have some guess, but I'm not sure if it's correct. Does it work as it is, because "poping" the Fragment from the stack, is like deleting the fragment, so the NavigationComponent moving in to the first one, because there's no second one (I've called the...

How to change position of button in activity_main.xml | Android studio Hello there im new to android studio and i create new project with "Basic Activity" template and cant understand why i cant drag and drop button where i want in activity_main.xml is always stay on top left corner? Drag and drop in content_main.xml has no problem at all i try to copy button xml code from content_main.xml to activity_main.xml but button still sit on left top corner activity_main.xml

Kotlin with(receiver) equivalent in Dart Let's say I have a class like this : class User { lateinit var firstname: String lateinit var lastname: String lateinit var age: String } Now, I want to populate this class, and use it, like this : fun main() { val user = User() user.firstname = "firstname" user.lastname = "lastname" user.age = "25"; println("Hello, ${user.firstname} ${user.lastname}, you are ${user.age} !") } Output : > Hello, firstname lastname, you are 25 ! In Kotlin, we have some...

Default logic of material components in separate files I like to create separate files for logic of material components that are used throughout the app so that the code is not repeated in every activity. An example would be the default navigation bar that is repeated in every activity. I can't really find any good sources online on how to do this. I have done the following and would like to know your opinion on this approach and if there are best practices for doing this. I this separate file (BottomNavigationBar.kt), I need to trigger Intents...

Why does runBlocking order coroutine execution in kotlin? If I run this code fun main(){ println("start") runBlocking { for (i in 0..10){ launch { delay(2000L) println(i) } } } println("end") } the output is start 0 1 2 3 4 5 6 7 8 9 10 end So why are 0 to 10 coroutines ordered? The same code, changed to work with coroutineScope outputs the numbers in random order. I am just curious about how this works since by the look of it runBlocking still launches the...

Non-static method cannot be referenced from a static context - Java to Kotlin - Android [duplicate] I am trying to create a Logger class in android , which would log message only if its a debug build. object Logger2 { private const val TAG = Constants.LOGGING_TAG fun d(message : Any?){ if (BuildConfig.DEBUG) Log.d(TAG , message.toString()) } fun d(message: Any? , e : Exception?){ if (BuildConfig.DEBUG) Log.d(TAG , message.toString(), e) } fun e(message : Any?){ if (BuildConfig.DEBUG) Log.e(TAG , message.toString()) } fun e(message: Any? , e :...

How to assign a value to a constant depending on another constant value in Kotlin? This would be useful for me because I have a bunch of constants that are different when I test my program locally vs when I run it on the server that it's supposed to run on. I assumed an if-else expression would work: const val FOO = false const val BAR = if (FOO) 1L else 2L However, the compiler considers this an error because for some reason, this if-else expression is not considered to be constant even though it really should be in my opinion, just like arithmetic expressions with...

Problem Glide showing picture from local Uri I'm trying to show a picture stored in my device using Glide but it doesn't work. My result Uri is: file:///data/user/0/com.example.tfg_red_social_v0/files/croppedImage.jpg The file exists I've checked with the explorer private val cropImage = registerForActivityResult(uCropContract){uri-> Glide.with(this).load(uri).circleCrop().into(binding.ivPerfil) } Please any help is welcome

How can I POST (Retrofit) an object into a list without converting it into an Object? I have a JSON with a list of objects like this: "check": [

How can I convert a data class to a room entity class and a UI class? I'm pulling values like conversion_rates from the exchange api and I don't want to use all of these values. Because there are data that I do not want to use in the data coming from the api. In addition, I want to save the data I want to use in the room and perform operations such as reading and updating from there. But I couldn't find how to convert the data class to room entity and the data class I want to show in ui. The data in the api is as follows, for example. This example uses USD...

Any alternative to Kensburnview for Jetpack compose I manually tried implementing KensburnView library with compose. I tried adding the image inside box and changing the offset of image doesnot give me the full image. Seems like height of the box get's dispatched to the image and changing the offset of image only offset's the cropped image. I know you can embedded the xml view inside compose but I want to have this thing in compose.

How to make a Jetpack Compose component invisible that does not superpose any other I have a miniplayer that becomes invisible when it is opened. The things is that i just change the Modifier.alpha but that doesn't make it untouchable, so I dont know how exactly do it. Thank you! Here is the video of how it works now: https://imgur.com/i3fx08p I wanted to make it dissapear while it's fullscreen opened. I don't really know how to do that so I have no idea from where to start to test. I tried making the Surface...

How do I refresh fragment by using NavigationComponents I have a few fragments, and I'd like to restart them by using SwipeRefreshLayout. I've managed to restart the Fragment, but instead of displaying the Fragment, where the popBackStack() were called, the app moving to the first fragment. I have some guess, but I'm not sure if it's correct. Does it work as it is, because "poping" the Fragment from the stack, is like deleting the fragment, so the NavigationComponent moving in to the first one, because there's no second one (I've called the...

ExperimentalCoroutinesApi Optin ? Android studio-kotlin what is this? what can i do to fix this. @ExperimentalCoroutinesApi Opt-in requirement marker annotation on override requires the same marker on base declaration

Get the class name as tag from which the method is being called - Android Logging I am trying to create a Logging class which only logs if the build is a debug build. This is my class import me.entri.entrime.BuildConfig import me.entri.entrime.utils.Constants object Logger { private val TAG = Constants.LOGGING_TAG @JvmStatic fun d(message : Any?){ if (BuildConfig.DEBUG) Log.d(TAG , message.toString()) } @JvmStatic fun d(message: Any? , e : Exception?){ if (BuildConfig.DEBUG) Log.d(TAG ,...

Recent API information on opening a camera in Android Studio (Kotlin) This might come off as a weird post, because I don't directly want answers to how to fix this just yet. Over the past few weeks now I've been searching for good tutorials/information on opening the camera in Android Studio Kotlin with a button and having it ask for permission and all that jazz and allow you to take a picture and save it to the app, not the camera roll (I want to use the picture in several places of the app, and having it in the camera roll is not needed and also just takes up...

App ANR after Android upgrade from 11 to 12 The app which has been working fine when on Android 11 started to crash after upgrading to Android 12. The app again started to work after uninstalling and install on Android 12. Google Play Console shows stack trace with reason as java.lang.IndexOutOfBoundsException. If IndexOutOfBoundsException was the issue, why it was temporarily an issue when upgrade happened. The app is in Kotlin and Jetpack compose. The app not to crash like on Android 11 and if started to crash, continue until fix is...

Swift anonymous protocol implementation in function, and callbackFlow using async-await How can I write an anonymous protocol inside a function in swift? In Kotlin, it is used like this: interface SomeInterface { fun interfaceFunction(someValue: Int) } fun someFunction() { val callback = object : SomeInterface { override fun interfaceFunction(someValue: Int) { TODO("Not yet implemented") } } } and how can I write an callbackFlow function using swift async-await? In Kotlin, it is used like this: interface SomeInterface { fun...

Cannot access class 'com.google.common.util.concurrent.ListenableFuture'. Check your module classpath for missing or conflicting dependencies I am trying to integrate CameraX in my flutter app but I get error saying Cannot access class 'com.google.common.util.concurrent.ListenableFuture'. Check your module classpath for missing or conflicting dependencies There error comes from below line val cameraProviderFuture = ProcessCameraProvider.getInstance(context) Below is my native view class CealScanQrView(val context: Context, id: Int, creationParams: Map?)...

How do I capture the URI from a registerActivityResult? I'm currently attempting to write a view in an android app that will open a camera on a button press, let the user record a video, and stash the URI in a member attached to said view. I'm very hopeful this is possible, but unsure because I can't find many docs regarding the issue. I'm using the top answer here as a reference for capturing the URI, and it's very comprehensive, but not working in my case for reasons of which I am unsure. I declare my variable at the top of the file as so...

Is it possible to create a popup window in Android that displays a live video feed via a texture view? I am currently building out our application to display a live video feed from the DJI SDK mobile on the android application. However, I am having a hard time figuring out how to display the popup with a texture view as the SDK states it needs to display on for the video feed to work. Has anyone created a popup with a texture view within it?

Unable to display list using spinner I tried to create a simple dropdown spinner but the items does not show up when I click the spinner. Here is my main_activity code

var spinner =findViewById(R.id.snippet)
val adapter=ArrayAdapter.createFromResource(
        this,
        R.array.list_units,
        android.R.layout.simple_spinner_dropdown_item
    )
    spinner1.adapter=adapter


    This is my Resource file



    Feet
    Meters
    Cms



This is my xml file

How to pass a button click from Fragment that is in a BottomSheet Toolbar to the Main Activity? I have implemented a TabLayout (which uses fragments) in my bottom sheet toolbar that has buttons which should affect the Main Activity. How do I pass the button clicks from the fragments in my TabLayout to the Main Activity? I'm stuck and I don't know where to start.

Kotlin - change text from array with R.strings I have problem with this solution. I have array in array with string from R.string because multi language app. But this doesnt work. Thank you. private var questionsList = arrayOf( arrayOf( R.string.abstract_question_1_question, R.string.abstract_question_1_answer_1, R.string.abstract_question_1_answer_2, ), arrayOf( R.string.abstract_question_2_question, R.string.abstract_question_2_answer_1,...

Replace fragment with onclicklistener I want to replace fragment following the image but my problem is I can only replace fragment 2 into Viewpager, but when I try to replace fragment 2.1 into Viewpager it isn't allowed how can I fix it I want to know how can I replace fragment 2.1 and it's worked

Play Integrity API Decryption Key: Bad base-64, with Base64.DEFAULT I have checked about this answer: java.lang.IllegalArgumentException: bad base-64 However, the String format is definitely different in my project. val key = "XX0XXxXXXXXxX/XXXXXX0XXX00X/0XX0xXXXX0Xxx0=" val bytes = Base64.decode(key, Base64.DEFAULT) I referred to the official document: <a href="https://developer.android.com/google/play/integrity/verdict" rel="nofollow...