Hi, do you know some public API that let not only retrieve data but post and delete too? I’m giving a course to students and we are actually made progress with Open Weather but I wand the know how to do all the CRUD operations. Thanks

Hey I am working in kotlin. I want to find index in which the variable value is true. I used MapIndex to find index of that value which is true. But I am using nesting mapIndex so may be there time complexity would be multiple. I need to improve that mapIndex logic to be more efficient in performance, speed, memory etc.

Hey I am learning atomic integer in kotlin. I want to know is there atomic integer swap value if current value is smaller than new value. For example AtomicInt 10 S*cenario 1*  new value is 5 and it changes to 5 because 5 is lower than 10 Scenario 2 new value is 20 it will not change the atomic value because 20 is greater than 10. Can we do this throught CompareAndSwap function?

Hi, friends, I need help to make my app available for large screens. I am using jetpack navigation with fragments. can anyone help me?

Hello everyone, Inside my app, I am given a Latitude and Longitude shipping address. And when the user presses a button, it opens the Google Map and directions from my location to the delivery location according to Latitude and Longitude. But now I also want to do the same thing for Chinese customers, And I see in China Baidu Map is replaced for GoogleMap, But I don’t know how to open deep link similar to google map, But this is my way of doing it but it is crashing, can someone help me to solve this problem DeepLink From Google:

if (isIos) {
    return `comgooglemaps://?daddr=${lat},${lng}&directionsmode=driving`;
 } else {
  return `google.navigation:q=${lat},${lng}`;
 }

My deeplink open Baidu Maps:

`<baidumap://map/navi?location=39.940488,116.355425>`;

Anyone please help me resolve this problem.

Does Boot completed broadcast works without launching application ?, here is my android manifest, I am not keeping activity LAUNCHER filter . I do not see broadcast receiver calls in boot completed

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:theme="@style/Theme.DownloadPOC">
    <activity
        android:name=".MainActivity"
        android:exported="true">
       
    </activity>

    <!-- Declaring broadcast receiver for BOOT_COMPLETED event. -->
    <receiver
        android:name=".DeviceBootUpReceiver"
        android:enabled="true"
        android:exported="false">
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED" />
        </intent-filter>
    </receiver>

</application>

Hi, I know that this sounds like a dumb question, but I don't really get it. When using BlendMode, which color is source and which is destination? I'm getting some weird behavior, I think I misunderstood

Hi, I had a doubt, how to use live data to set and get value from the camera intent and pass the same to other class.

Hey I want to use custom comparator in priority queue in kotlin. I have data class Product.kt

data class Product(val value: String? = null, val price: String? = null) {
    var priceInLong = price?.toLong()
}

I want to create a min heap where price value will be minimum. I am creating the object but it giving me some kind of error

fun main() {
    var queue = PriorityQueue<Long> { p1: Product, p2: Product ->
        p1.priceInLong?.let {
            p2.priceInLong?.minus(it)
        }
    }

    val list = listOf(
        Product("1", "4.83"),
        Product("2", "4.53"),
        Product("3", "3.54"),
        Product("4", "3.66"),
        Product("5", "5.16")
    )
}

Error

None of the following functions can be called with the arguments supplied.
<init>((MutableCollection<out TypeVariable(E)!>..Collection<TypeVariable(E)!>?))   where E = TypeVariable(E) for    constructor PriorityQueue<E : Any!>(c: (MutableCollection<out E!>..Collection<E!>?)) defined in java.util.PriorityQueue
<init>(Comparator<in TypeVariable(E)!>!)   where E = TypeVariable(E) for    constructor PriorityQueue<E : Any!>(comparator: Comparator<in E!>!) defined in java.util.PriorityQueue
<init>(PriorityQueue<out TypeVariable(E)!>!)   where E = TypeVariable(E) for    constructor PriorityQueue<E : Any!>(c: PriorityQueue<out E!>!) defined in java.util.PriorityQueue
<init>(SortedSet<out TypeVariable(E)!>!)   where E = TypeVariable(E) for    constructor PriorityQueue<E : Any!>(c: SortedSet<out E!>!) defined in java.util.PriorityQueue
<init>(Int)   where E = TypeVariable(E) for    constructor PriorityQueue<E : Any!>(initialCapacity: Int) defined in java.util.PriorityQueue

Where can I learn Kotlin for free please?

Hi, can someone guide how to manage viewbinding in adapter incase we have two viewTypes of layouts

override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
    mContext = parent.context

    val binding = if (viewType == 0)
        VerOcfProductGroupLayoutBinding.inflate(
            LayoutInflater.from(parent.context),
            parent,
            false
        )
    else
        OcfProductGroupLayoutBinding.inflate(
            LayoutInflater.from(parent.context),
            parent,
            false
        )

    return ViewHolder(binding)

}

How to handling in

onBindViewHolder

?

i didnt understand Not-Kotlin flag please explain ?

I want to add the flag

-Xcontext-receivers

in my android studio bumblebee Kotlin compilation flags but I can’t find where to set it. Anyone knows the place? thx

What Kotlin concepts are required or preferred for being adept at Android? I understand much of the new syntax (thanks to Kotlin Koans), and currently learning Coroutines and Flows. Should these suffice for making decent Android apps? Can I shift my focus solely on Android now?

I have a weird question, how would it be possible or is it possible to write something or use some software that can show me all the screens of an app? I would run it for example and it would open and screenshot (or log) all the possible screens that exist in the project

Hey all, Not a question, but a shameless plug (for a good cause!) The Kotlin Dev Day conference will take place in Amsterdam on May 19th. In the Johan Cruijff ArenA (Ajax football stadium) we will host 3 stages full of Kotlin, with both server-side and Android/mobile talks. Some highlights in terms of speakers: Hadi Hariri, James Ward, Andrey Breslav (not announced yet), Anton Arhipov, Marcin Moskala, Urs Peter, Liliia Abdulina. Find the full program and speakers here: https://kotlindevday.com It's a not-for-profit conference, which means that all profits will be donated to something that the community chooses. Voting will be done at the event 🙂 And yes, there are sponsors that cover some of the costs. Hopefully all the costs, so there is more money for charity, sustainability, diversity, supporting open-source initiatives, etc. We're very excited and we hope to bring the European Kotlin community together! Enjoy your weekend! 💰 Please be advised that early bird tickets are available until the end of the month. So next Tuesday 🙂

Hey...in the light of the latest events in Ukraine...has anybody an overview if there are still active App Projects for Refugees? (Sorry I know it's not directly Kotlin related)

I got this warning `This

TypedArray

should be recycled after use with `#recycle()`` after use

obtainTypedArray

for my array list. But when I try to call

recycle()

,

getResourceId()

show

unresolved reference

error.

Hi i think i am OT but my question is very simple. is there some server to use inside an application? Http server to comunicate with other application in lan ? maybe ktor?

Is there a callback for compose

animateSizeAsState

that gets invoked when

targetValue

is not changed and so results with no animation happening, but still have a callback invoked

Hey guys, i am trying to receive location updates using this example https://conorsmith.dev/post/kotlin_flow_location_updates/ I found online. But I have no idea how to Provide the fusedLocationProviderClient to the viewModel, so I tried Providing this way:

@Singleton
@Provides
fun ComponentActivity.FusedLocationProvider(): FusedLocationProviderClient{
    return LocationServices.getFusedLocationProviderClient(this)
}

But then I get this error:

/Users/tolusolomon/AndroidStudioProjects/Link/androidLink/build/generated/source/kapt/debug/com/example/link/android/Application_HiltComponents.java:125: error: [Dagger/MissingBinding] androidx.activity.ComponentActivity cannot be provided without an @Inject constructor or an @Provides-annotated method.
  public abstract static class SingletonC implements Application_GeneratedInjector,
                         ^
      androidx.activity.ComponentActivity is injected at
          com.example.link.android.Di.AppModules.FusedLocationProvider($this$FusedLocationProvider)
      com.google.android.gms.location.FusedLocationProviderClient is injected at
          com.example.link.android.LocationBusiness(fusedLocationProvider)
      com.example.link.android.LocationBusiness is injected at
          com.example.link.android.Presentation.screen.Place.PlaceViewModel(locationBusiness)
      com.example.link.android.Presentation.screen.Place.PlaceViewModel is injected at
          com.example.link.android.Presentation.screen.Place.PlaceViewModel_HiltModules.BindsModule.binds(vm)
      @dagger.hilt.android.internal.lifecycle.HiltViewModelMap java.util.Map<java.lang.String,javax.inject.Provider<androidx.lifecycle.ViewModel>> is requested at
  dagger.hilt.android.internal.lifecycle.HiltViewModelFactory.ViewModelFactoriesEntryPoint.getHiltViewModelMap() [com.example.link.android.Application_HiltComponents.SingletonC → com.example.link.android.Application_HiltComponents.ActivityRetainedC → com.example.link.android.Application_HiltComponents.ViewModelC]

Any idea about how to provide the fusedLocationProviderClient to the ViewModel using Hilt? Thanks

I want to create android app that reuses most of my web UI but with few native functionality. What is a good approach to seamlessly navigate between native screens and web ones? Is this a commonly solved problem? thanks

Trying to insert a list of items and Room is throwing the following error :

error: Not sure how to handle insert method's return type.

Kotlin version : 1.6.0 Room version : 2.4.2 Here is my DAO :

@Dao
interface UserDao {
   .....

    @Insert(onConflict = OnConflictStrategy.IGNORE)
    fun loadUsers(userCacheEntities: List<UserCacheEntity>): Long

   .....
}

I know that maybe you will ban me, but i can not keep silence. I am an android dev more than 9 years and i am in Ukraine. I want people from all over the world including Russia know about the crimes the Russian government and the Russian army commit in the Ukraine. On this video you can see a huge city Harkiv these days. they are civilians in the center of the city. Russians, stop this war. in this war you are not heroes. NO WAR!!!

This message was deleted.

How to add field to default existing request body (defined in client) in post request using retrofit?

This message was deleted.

Suggestion Needed Should we use buildSrc for dependencies in 2022? or should we go with ext for versioning?

I have a database which is prepopulated with some tables which is working fine. I have prepopulated my db. like this

Room.databaseBuilder(
        get(),
        AppDatabase::class.java,
        APP_DATABASE
         )
        .createFromAsset("app.db")
        .fallbackToDestructiveMigration()
        .build()

the problem I am facing is that. when user adds his own data it got inserted correctly and displayed on my screen. when I move app to the background and remove it from there and reopen the application. I don't se my data and only the default data is present there. any help would be appreciated