Crash on load Activity I have an error on the code below, this code must display a list of elements but when it executes the code I have an errorore on the line: val bmp: Bitmap = BitmapFactory.decodeStream(url.openConnection().getInputStream()) this only happens in this view, I state that the mylistaadapter object is also used in other view, what is this due to? Error: at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:411) at...

Retrieve gif image from firebase and returns the same gif image, how to fix this? I have a problem with my app, I am currently building an information page with a horizontal slider using ViewPager. I have 2 layout XML which is united with 1 activity with ViewPager, which means that each layout displays a different gif. All gif images are retrieved from firebase. The problem is all the layout displays the same gif. Here my onCreate function : override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState)...

Compare Values in classes in Kotlin I'm pretty new to this, so I don't even know if my idea is possible to code. I' d like to compare the values of properties in a class. My goal is to make a game, like the quartets of my childhood. One player calls the power of his car card for example and it is compared with the other car cards power. The bigger value wins the card. Is it possible to compare those values without creating tons of vals? This is my example open class Tractor (val displacement: Int, val power: Int, val...

How to import java module in Kotlin Gradle script I would like to import java.lang.module to use https://docs.oracle.com/javase/9/docs/api/java/lang/module/ModuleDescriptor.Version.html How can I do this in a gradle .kts Kotlin script? I tried import java.lang.module which did not work.

If I add databinding to gradle, is it possible to use viewbinding as well? I learned today that there is something called viewbinding other than databinding. I was new to viewbinding, but I was already using it in code. In other words, I knew it was data binding and was using it wrong. To use viewbinding i need to apply below code in gradle. However, I have never applied anything other than data binding. dataBinding { enabled = true } However, in my code, it is accessed through the ID of the view with binding.title.text-like code. There is also no tag. Isn't this...

How to show entire part of the image without cropping or losing the aspect ratio in Android app using Kotlin? I wanted to show the entire image without cropping or losing the aspect ratio in my imageView. I am a beginner but I tried all scaleType but nothing worked. Following is the part of my XML code. I want to do it for iv_product_image.

How to send Onesignal generated push token to the server? Onesignal is generating the push token for a device but I want to send this token on to the server. Please help me out, what should be the approach. I/OneSignal: Device registered, push token = d0tPTN3UShOt5UhlLJw7gU:APA91bNgMx-tKqBj7h2Qc4dV9Tx3CYhCg6AiHAozjI6M2g4RzPVNYb3q8Pa3xe_FLO19G_cuuAYaiPfhcWj6R6l_AoSDbvZJBZFMlol4tw6fW8QKgGUZ2hQ8xIWoXtdAZjvLAqySTbDm D/OneSignal: registerForPushToken completed with id:...

Kotlin Hilt Repository Constructor I have added Hilt to my project. However, I am facing a problem as shown in the figure. When accessing the object in the News Repository Class, it expects something of the type apihelper from me. What should I write there? NewsRepository.kt class NewsRepository @Inject constructor( val db: ArticleDatabase,private val apiHelper: ApiHelper ) { suspend fun getBreakingNews(countryCode: String, pageNumber: Int) = apiHelper.getBreakingNews() NewsActivity.kt val newsRepository =...

How can I use ViewBinding with RecyclerView Adapter with an already existing inner class in Kotlin? TodoAdapter.kt class TodoAdapter (var todos:List) : RecyclerView.Adapter(){ inner class TodoViewHolder(itemView: View): RecyclerView.ViewHolder(itemView) override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): TodoViewHolder { val view= LayoutInflater.from(parent.context).inflate(R.layout.todo_layout, parent, false) return TodoViewHolder(view) } override fun onBindViewHolder(holder: TodoViewHolder, position: Int) { holder.itemView.apply { } } override fun...

Unable to create process using '/usr/bin/env I am trying to use Pidcat for logging. I downloaded the Pidcat.py and pasted it in the following directory: C:\Python\Scripts Added this path in the Environment Variables as well. But when I try to log in using the following command: pidcat -s deviceId I get the following error: Unable to create process using '/usr/bin/env -S python -u "C:\Python\Scripts\pidcat.py" -s deviceId'

Bottom navigation bar not showing- Android I am learning Android and I'm trying to implement the bottom navigation bar. In activity main the navbar appears, but not in the emulator. Thank you for your help! The MainActivity.kt package com.example.androidapp import android.os.Bundle import androidx.appcompat.app.AppCompatActivity import androidx.navigation.NavController import androidx.navigation.Navigation import androidx.navigation.findNavController import androidx.navigation.ui.AppBarConfiguration...

Why Kotlin Coroutine withTimeoutOrNull takes longer than the time assigned? I am working on a video editing tool and I have a function that renders a scene. Depending on the complexity of that frame, it might take a while for this to happen. For the video editor to run smoothly, I have to allocate a certain time for rendering each frame. Within that time, if the frame was rendered, we show it to the user, if not, that frame gets skipped and we move on to the next one. The problem is that when I run a suspending function and ask coroutine to allocate certain...

How to make Kotlin use field instead of setter in non-primary constructors too If I use a primary constructor to initialize a property, its setter won't be called: open class Foo(open var bar: Any) open class Baz(bar: Any) : Foo(bar) { override var bar: Any get() = super.bar set(_) = throw UnsupportedOperationException() } ... Baz(1) // works, no setter is called This works too: open class Foo(bar: Any) { open var bar: Any = bar // no exception in Baz(1) } But this doesn't: open class Foo { open var bar: Any constructor(bar: Any) {...

How to generate dokka for a pure kotlin submodule? My Android project comprises 2 submodules: myproject |- myapp '- mymodel //no android code, just Kotlin Following https://medium.com/@julesrosser/auto-generate-kotlin-android-documentation-with-dokka-382248c03283 I added buildscript { ext { dokkaVersion = '0.9.17' } dependencies { classpath...

Android Livedata with RxJava Single not work in Room Database I used Room and RxJava Single with Livedata, it doesn't work. I tried in two ways. I don't know why the second one works and why the first one doesn't. (1) get List by Single -> not work (2) get List by Livedata -> work (1) get List by Single DAO @Dao interface DiaryDao { @Query("SELECT * FROM Review") fun getAllReview() : Single //

YoutubePlayerFragment inside a fragment I have a fragment that has a framelayout container that gets added and replace with the YoutubePlayerFragment. I keep getting a null pointerexception as it seems that Android studio is not finding my youtubefragment with findfragmentbyid when the id correct. I tried to not use the YoutubePlayerFragment but as a YoutubePlayerview in fragment_youtube.xml but that does not work because you need to extend YoutubeBaseActivity. If anyone has experience with implemented in YoutubePlayerFragment...

How can I access checkbox view in a RecyclerView Adapter class from a layout file? class TodoAdapter (var todos:List) : RecyclerView.Adapter() { inner class TodoViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): TodoViewHolder { val view = LayoutInflater.from(parent.context).inflate(R.layout.todo_layout, parent, false) return TodoViewHolder(view) } override fun onBindViewHolder(holder: TodoViewHolder, position: Int) { holder.itemView.apply { } } override fun...

sometimes shouldOverrideUrlLoading not calling for tinyurl in android I know this question is asked before but that answer is not helped me to solve this issue In my app I use tinyurl to get actual URL by webview Here the code override fun onNewIntent(intent: Intent?) { super.onNewIntent(intent) intentData = intent!! handleDeepLink(intent) } private fun handleDeepLink(intent: Intent) { intentData = intent /*we get callUUID from deep link data and that we will use it for get twilio access...

how to display a certain number of images from API - Kotlin - retrofit i am calling data from API to display it to use but in my case i want to display the latest 4 images of the API, i don't want to call all of them so what is the correct way to do this? Here is my code: Interface: interface facebookInterface { @GET(" ") fun getServices(): Call companion object Factory { fun create(): facebookInterface { val retrofit = Retrofit.Builder() .addConverterFactory(GsonConverterFactory.create()) .baseUrl("API_URL")...

Combining Curl Post with Request Queue Kotlin Android The following works with the REST api, however I am now trying to achieve the same in Android Kotlin curl -X POST \ -H 'content-type:application/json' \ -d '{"firstname":"John","lastname":"Doe"}' \ http://localhost:5000/users My attempt to call the same curl in kotlin: fun submit_new_user(view: View) { val textView = findViewById(R.id.textView111) // ... // Instantiate the RequestQueue. val queue = Volley.newRequestQueue(this) //build...

My firebase cannot upload to the realtime database? Android Kotlin I'm trying to create a firebase app from android kotlin. I've already set up and connected the firebase to my app. But I cannot upload the data to the database? When I click the button it just won't upload and its like skipping the code to upload it. Here's my code: class MainActivity : AppCompatActivity() { private lateinit var binding: ActivityMainBinding override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) binding =...

Klaxon parse null I have issue when using Klaxon 5.5 Class : data class QRResponse( @field:SerializedName("qrType") val qrType: String? = null, @field:SerializedName("qrData") val qrData: String? = null ) Code : val dataContens = result.contents Log.d("ScanQRData", "result.contents : $dataContens") val dataQR = Klaxon().parse(dataContens) Log.d("ScanQRData", "dataQR : $dataQR") Result : ScanQRData: result.contents : {"qrType": "product", "qrData":"352307811"} ScanQRData: dataQR :...

sometimes recycler item updated after opening the list not in background android In my app i put recylcer item list for more option button It's basically menu item list after click the one item we want to change text of that particular item and close the menu list on click event of that item val datamenu = MenuItemModel( getString(R.string.stop_share_screen)//change text of that item, setDrawable(R.drawable.ic_screen_share)!!, true ) list[list.size - 1] = datamenu...

Kotlin Hilt ApiHelper add Repository Constructor I created a structure like in the figure. However, it wants an object in apihelper type at the place I specified in the activity. What should I write there? NewsRepository.kt class NewsRepository @Inject constructor( val db: ArticleDatabase,private val apiHelper: ApiHelper ) { MainActivity.kt val newsRepository = NewsRepository(ArticleDatabase(this),)->Second value(apihelper object)? val viewModelProviderFactory = NewsViewModelProviderFactory(newsRepository)

Chain Request From Room with Kotlin Coroutine and Flow I want to request two times for different Flow types then add result in single live data for observation. but only get the first result. fun getAllItems() { viewModelScope.launch { noteRepository.getFoldersWithNotes() .collect { allItems.postValue(it) } noteRepository.getAllNotes() .map { databaseNoteMapper.mapFromEntityList(it) } .collect {...

How can I get the following arc-shaped dynamically color changing animation for Android? I am trying to get something like this: I need to continuously change the color of each arc sequentially to give a 'wave' like feel to it. I don't know whether I should use Canvas to draw the entire animation or use drawable resource files. Can anyone please suggest which would be better and why? Also , if you can link a similar looking animation which can be used as reference for this then that would be great too!...

Title name is not reflected on android My title is not displaying in the app. I think there is a problem with the intent. So, my main file is the login page and the code is: class MainActivity : AppCompatActivity() { lateinit var username: EditText lateinit var password1: EditText lateinit var logIn: Button lateinit var signup: TextView lateinit var forgotpassword: TextView val user="DiyaK" val pass=arrayOf("Diya@2826","Sidd@2826","Prat@2826","Prash@2826") var titlename: String? = "DiyaK" override fun...

Android development - career path - mentorship Im Adrian, 35 years old, im form UK, from Poland originaly. In the past i went to Uni in Poland doing my Computer Science. Because life is life i had to drop Uni on 3rd year(still had one year to go..) and get normal job to provide for family. Moved to England 11 years ago. Last year, beginning of first lockdown, i decided that i want to switch career and become Android developer, i love to spend my time behind desk typing code. I started learning on my own. YT, , than i completed Udacitys...

Kodein + Ktor = mutation attempt of frozen kotlin.collections.HashMap - why? I have been struggling with this exception for couple of days recently. I have a kotlin multiplatform project with these dependencies: kotlin=1.5.10 kodein=7.6.0 ktor=1.6.0 (uses kotlin coroutines 1.5.0-native-mt internally) And I have been getting mentioned exception while trying to use httpClient in native: at kotlin.Throwable#(/Users/teamcity3/buildAgent/work/290aee0e088a1666/runtime/src/main/kotlin/kotlin/Throwable.kt:23) at...

Kotlin Hilt Lateinit Property has not been initalized I'm getting an error like this, how can I fix it? NewsActivity.kt @AndroidEntryPoint class NewsActivity : AppCompatActivity() { lateinit var viewModel: NewsViewModel lateinit var toggle:ActionBarDrawerToggle lateinit var apiHelper:ApiHelper override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_news) val newsRepository = NewsRepository(ArticleDatabase(this),apiHelper) val...