Hi there, can I make a default general condition applied automatically on all queries related to a specific table(Entity) in Room? eg: I have a table named tasks and there is a hidden property for each task either 0 or 1, so I want all queries getting the tasks that aren't hidden except to explicitly query the tasks that are hidden.

In this article, Begüm Yazıcı will try to explain what are Unit tests, why should we write them, and how to write them. "It has never been easier to understand how to write Unit Tests on Android — Part 1" 👇 https://blog.kotlin-academy.com/it-has-never-been-easier-to-understand-how-to-write-unit-tests-on-android-part-1-5ed1e5d8112b

Hey Can we eliminate characters from string *For exampl*e

val string = "000010"

or

val string = "010"

to get only

10

Does anyone else have problems with kapt? I have applied it as plugin, but Android Studio does not find it. I'm following step three of this codelab. https://developer.android.com/codelabs/android-room-with-a-view-kotlin#3

Hello friends Anyone know any free video player in android like youtube with all features

Hello @all Retrofit with 443 PORT I am parsing data using Retrofit. As I used to give BASE URL and 443 PORT to Retrofit Request, BASE URL NOT WORKING WITH 443. I want to use URL like :  http://xxx.xxx.xx.xxx:443/ Is there any suggestion how do I set my BASE URL WITH 443 PORT?

Hi guys! I have one peculiar problem which I am not sure how to handle. The issue is the following, I’ve defined a value class (lets call it Query which wraps a String primitive type). I am using DataStore preferences in which I store/retrieve the string value by wrapping/unwrapping the value to Query value class accordingly. The issue I am receiving is when I subscribe to the Flow object I get

java.lang.ClassCastException: java.lang.String cannot be cast to Query

and I am completely puzzled to why is that? I get that value classes are “deconstructed” to the primitive type in runtime, but why am I then allowed to use them like this then? Thanks!

Hey Everyone can someone explain me what is the d/w these two

Meta-question for mods: Have we ever considered renaming this channel “android-kotlin” or something like that to cut down on the 😶 questions?

Note: It's Kotlin related because of the

internal

visibility modifier. Is it intended that test classes from app/src/test/java/ can access internal classes from app/src/main/java? If yes, can someone tell me why Android Studio marks those references as unresolved? The test runs without any problems! It's a fresh android project.

Android Studio Chipmunk | 2021.2.1 Canary 5

Build #AI-212.5457.46.2112.7905983, built on November 11, 2021

Runtime version: 11.0.12+7-b1504.28-7817840 amd64

VM: OpenJDK 64-Bit Server VM by Oracle Corporation

Windows 10 10.0

GC: G1 Young Generation, G1 Old Generation

Memory: 4096M

Cores: 16

Registry: external.system.auto.import.disabled=true

Non-Bundled Plugins: com.andrey4623.rainbowcsv (2.0), Statistic (4.1.7), com.github.setial (4.0.2), CheckStyle-IDEA (5.58.0), dev.polek.adbwifi (1.2.4), krasa.CpuUsageIndicator (1.14), kotest-plugin-intellij (1.1.44-IC-2021.1), izhangzhihao.rainbow.brackets (6.21)

does any1 know any tutorial for custom serialization. For big collection, to use a flow instead of a list ?

Hi everybody, i have a doubt. Do you know how I can delete the sharepreferences before the app closes, that is, in the onDestory ()?

I am doing my best to do database room stuff in coroutines, but my project crashes every time. It thinks I'm touching database in the main thread. I swear I'm not!

java.lang.IllegalStateException: Cannot access database on the main thread since it may potentially lock the UI for a long period of time.

I'm doing all insertions in coroutine contexts like:

fun removeMessage(message: Message) = viewModelScope.launch{
    repository.remove(message)
}

How can I convert

Map<String, Any>

to a data class using kotlinx.serialization?

Hey Floks, Need Some help on android webview. I’m facing an issue, Web page is not scrolling in webview with some devices. I’m hoping those devices are running on low memory and device is taking long time to response. Anyone can suggest how to solve this issue. This is happening with my library/AAR which is consume by multiple apps.

Good afternoon everyone... I have an issue with Kotlin serialisation in my android application

not sure if this is the right channel, but I'm interested in Jetpack Compose multi platform but the objective is from one code base to deploy both a desktop and web app, is that currently possible ? much thanks

Hello everyone! I'm facing some bad performance since using compose on my Android app. I tried to reduce recompositions. Now i a have questions about this. Are modifiers costly in recompositions? On every recomposition every action on modifier like padding, background,... are reset and recalled. Some actions like onSizeChanged are called on every recomposition cause the previous size is reset. I tried to remember modifier and that reduces useless calls of onSizeChanged. Is it OK to remember modifiers?

Hello everyone, can someone help me with this problem?https://stackoverflow.com/questions/70098161/know-the-type-of-biometric-login-type-before-building-prompt-in-kotlin

Hello all, has anyone else been running into

java.lang.ClassCastException: java.util.ArrayList cannot be cast to kotlin.Resul

? Should I report this as a bug? I’m able to use the Kotlin result library without issue for many result types, but weirdly not with lists. I’m simply trying to return a result from an API request as a list, but having trouble doing so. My method looks like this

suspend inline fun <reified T> get(route: String,
                                       block: RequestBuilder.() -> Unit = {}): Result<T> {
        if (networkReachability.isNetworkAvailable) {
            return try {
                val options = RequestBuilder().apply(block)
                val response = client.get<T>("$baseUrl$route") {
                    headers {
                        sessionId.value?.also {
                            append("API-KEY", it)
                        }
                    }
                    if (options.requestPerms.isNotEmpty()) {
                        options.requestPerms.forEach {
                            // this sets the URL query parameters
                            this.parameter(it.first, it.second)
                        }
                    }
                }
                Result.success(response)
            } catch (e: Exception) {
                return handleError(e)
            }
        } else {
            return Result.failure(NetworkNotReachable)
        }
    }

my

T

type in this case is a List

Hello every one, would appreciate it if you can give me your opinion on the following matter. I want to decide which one of the following block of codes is better to use and why? 1st Block:

nullableVarParent?.let { nonNullParent ->

    if (
    		nonNullParent.nullableValChildOne == null
         || nonNullParent.nullableValChildTwo == null 
    ) 
      return
    
    funcEx(
         nonNullParent.nullableValChildOne,   
         nonNullParent.nullableValChildTwo
    )
}

2nd Block

if (
    		nullableVarParent?.nullableValChildOne == null
         || nullableVarParent?.nullableValChildTwo == null 
    ) 
      return
    
funcEx(
     nullableVarParent?.nullableValChildOne!!,   
     nullableVarParent?.nullableValChildTwo!!
)

Some would think the second one is safe too because of the if condition, but is it better to use? Appreciate your support.

[Solved] How can I work around

'public' function exposes its 'internal' parameter type...

internal interface Cache

// Public API
class API(private val cache: Cache) { // compile error --> 'public' function exposes its 'internal' parameter type
   // Cache is not exposed, just used internally
}

Cache

is not part of the public API but it is used in the class that represents the public API (public API of the library/module). What options do I have?

I'm working with Dates for the first time in my app and I'm using Kotlin. What's the go to for being able to take a date and say "This date is 15 days from now". Should I be looking into java8 desugaring, or does kotlin have some sort of datetime classes that would work for my scenario?

It seems like Kotlin Synthetics for Android Views does not work anymore in version 1.6. When using version 1.5.31 it works normally. I saw it was deprecated but should at least continue to work. Any suggestions to get it to working with v1.6? My error is in thread

Hey folks I am trying to clean up my existing codebase I want to make this function more generic.This is my current implementation I want to remove the need to pass the kClass rather infer it directly from T I tried inlining but none of those approaches work

Hi! I'm trying to figure out whether the various getX functions in SharedPreferences might return null (and if the defValue can be null)? It seems like only getString and getStringSet are annotated with

@Nullable

for that... 🤔

In the source code (it seems that it wouldn't bother Android if defValue was null... but why isn't it annotated like getString?):

@Override
    public int getInt(String key, int defValue) {
        synchronized (mLock) {
            awaitLoadedLocked();
            Integer v = (Integer)mMap.get(key);
            return v != null ? v : defValue;
        }
    }

Has anyone run into issues with

kotlin.Metadata

+ proguard after updating to 1.6.0? We were following official advice, but now the annotation is not kept in bytecode anymore, which creates all sorts of issues.

Hello Everyone, I am stuck in a problem in jetpack compose. How can I launch a suspend function in my viewmodel from a @Composable function as soon as the screen is Loaded? Solutions I have Tried:

@Composable
fun FollowInterestsContent(actions: MainActions,viewModel:UserOnboardViewModel){
   val coroutinesScope = rememberCoroutineScope()
   viewModel.setInterestsList(context)
}

This Returns 

Suspend function 'setInterestsList' should be called only from a coroutine or another suspend function

Next I tried is

@Composable
fun FollowInterestsContent(actions: MainActions,viewModel:UserOnboardViewModel){
   val coroutinesScope = rememberCoroutineScope()
   coroutinesScope.launch { viewModel.setInterestsList(context) }
}

This Returns 

Calls to launch should happen inside a LaunchedEffect and not composition