Hey Android Developers! I've been working on a YouTube channel for a month and would like to introduce it to you and get some feedback: https://www.youtube.com/c/AndroidDevelopmentLightningTipsAndTricks

This message was deleted.

What are the pros and cons of storing a DateTime as a timestamp in Room DB? is it good practice? because I heard that will lose control of timeZone if do so, how do you handle this process guys?

ah found it, emit instead of tryEmit worked

Hello everyone. I have no experience with Pagination 3, I want to save data in the database, when there is a change I will save it to the database and it will automatically update to the UI. Is this possible with Pagination 3 + (Rxjava || Livedata)? Thanks.

Hi there. In Some Android libraries i can find an api directory next to the src directory Does any body know what is the importance of that directory and the files inside it? https://github.com/chrisbanes/snapper/tree/main/lib/api https://github.com/square/logcat/tree/main/logcat/api

[✅ SOLVED] I am using Chainfire’s libsuperuser to write to a protected directory. but it doesn’t write content (can read though). Code inside the 🧵

Has anyone managed to include the recipients email address when using

ACTION_SENDTO

in Android 12? The code is identical to the official documentation and has worked flawlessly before Android 12.

The flow lifecycle article of @Manuel Vivo https://medium.com/androiddevelopers/a-safer-way-to-collect-flows-from-android-uis-23080b1f8bda gives this example of collecting multiple flows:

// Listen to multiple flows
        lifecycleScope.launch {
            lifecycle.repeatOnLifecycle(Lifecycle.State.STARTED) {
                // As collect is a suspend function, if you want to collect
                // multiple flows in parallel, you need to do so in 
                // different coroutines
                launch {
                    flow1.collect { /* Do something */ }   
                }
                
                launch {
                    flow2.collect { /* Do something */ }
                }
            }
        }

Is there anything wrong with doing this instead? :

// Listen to multiple flows
        lifecycleScope.launch {
            lifecycle.repeatOnLifecycle(Lifecycle.State.STARTED) {
                // As collect is a suspend function, if you want to collect
                // multiple flows in parallel, you need to do so in 
                // different coroutines
                launch {
                    flow1.collect { /* Do something */ }   
                }
            
            }
        }
        lifecycleScope.launch {
            lifecycle.repeatOnLifecycle(Lifecycle.State.STARTED) {
                
                launch {
                    flow2.collect { /* Do something */ }
                }
            }
        }

Hey I have a .JAR that implements kotling-logging (https://github.com/MicroUtils/kotlin-logging), what do i need to do see the logs from the JAR in Android Studio.

How do we change PagingSource dynamically in Pager? I need to collect from one Flow and when searching/filtering select another flow

Hello. I come from iOS development and am used to calling kotlin lambdas (e.g.

val onAction: () -> Unit = { ... }

) as blocks. Is this naming clear to android developers? The word lambda in my head does not sound very nice in this context.

I'm on Android Navigation 2.4.0-beta01 and when compiling, my enum navarg type's are not being compiled (unresolved reference). Anyone encountered this issue before? This is with SafeArgs ofcourse.

Quick question folks: I am developing an SDK where I need to add Fragment into an Activity. FragmentManager is deprecated since API 26. Now get SupportFragmentManager is a function of support.AppCompatActivity. I don’t want to use deprecated class FragmentManager but can’t acces SupportFragmentManager from AppCompatActivity. What is the best way to go here?

How are useful searches by a class name? Now with Android composable, the problem is even worse. The framework forces you to create methods with a capital letter in a stand-alone file.

Whats the fastest method for deserializing data from Realtime Database?

Hey guys, one question, is is possible to collect the data/values of a

MutableStateFlow

in 2 fragments of a viewpager?

Hello, What are you using for implementing expandable layout?

Hi guys,

I keep getting java.lang.IllegalArgumentException: Key was already used. If you are using LazyColumn/Row please make sure you provide a unique key for each item.

I am sure all the keys are unique and I even logged them to be sure. Also this happens when items are rapidly added to lazy column. Here is my sample code:

@Composable
fun UiComponent() {
    LazyColumn(
                verticalArrangement = Arrangement.spacedBy(12.dp),
                state = scrollState,
                reverseLayout = true
            ) {
                items(
                    items = viewmodel.messages,
                    key = { item -> item.hashcode() },
                    itemContent = { item: Entity ->
                        if (item.isDeleted) {
                            //show deleted ui
                        } else {
                            //show messages
                        }
                    })
            }
        }
}

VM {

    init { 
       observeDataFromDB()
    }

    private val _messages: MutableList<Entity> = mutableStateListOf()
    val messages: List<Entity> = _messages


    fun observeDataFromDB() {
        viewModelScope.launch {
            repo.getData().collect {
                _messages.apply {
                    addNewItem(it)
                }
            }
        }
    }

}


//extensions
fun MutableList<Entity>.addNewItem(entity: Entity) {
    if (this.size >= MAX_SIZE) {
        removeLast()
    }
    Log("existing ${this.toList().map { "${it.hashCode()}" }}")
    Log("adding new ${entity.hashCode()}")
    this.add(0, entity)
}

//id is primary key
data class Entity(val id: String, val isDeleted: Boolean, val message: String)

Any help would be great! Have been stuck with this for sometime now and not sure how to proceed 😭 Have tried using

id

as the key and I still get the same error.

Hello! I am trying to exclude some classes from an android apk. These classes are generated in the build folder. Exclude does not seem to work! Is there any sort of limitation/bug? I do not want to use proguard...

Hi folks. I'm writing a JVM library using Kotlin, and this library is to be used on Android 5+ (API 21+) as well. I keep introducing changes that won't work on older versions of Android (like using `Path`s), and I don't realise until I try to upgrade the library on Android. Is there a tool that I can use in CI to spot any use of Java APIs not available on the versions of Android we support? I searched on Google but didn't find anything (maybe I could've used better keywords)

Curious if there're any AOSP devs who work on anything fw or AOSP app related here. Trying to use IntelliJ for development in that area specifically for its first class Kotlin support, but indexing takes forever. Are there any exclusions anyone adds to their config so I can get cracking at development quicker?

I have seen the Quodana static analysis tool and was wondering if this will work / make sense in an Android environment. Android was not mentioned in the video and I was thinking that this might be on purpose?

Hi everyone. Would my

google-service.json

being exposed when someone is doing reverse-engineer?

Hi Guys, Is it possible to play music on Google Home using 3rd Party App? I have requirement in which I have to play music on Google Home at particular time(Reminder). Or Is it possible to open google assistant using Intent? Thanks.

HI Guys, The below error doesn't direct to my class file. Please suggest me how to solve this.

I want to make sure a TextView will not have single word per line. That means that if a text is long and is dropped to a second or third line, i want to check that there is more than one word in that line. Then break the text a word before that top ensure that there is more the one word in the last line. How can i count words in each line of a TextView?

Hey guys, I've a question regarding best practices on where should the thread switching to background (ie. coroutines context switching Dispatchers.IO) take place in a clean architecture app? Should that take place inside the Repository (in the data layer), or in the UseCase-s (domain layer)? Would really hope to hear your opinions on that with some Advantages / disadvantages presented.

Hi everyone 👋 I am working on migrating an existing android project to compose and followed the official guideline for dependencies (kotlin, agp etc). This is what my root gradle looks like,

ext {
        compose_version = '1.0.1'
        kotlin_version = '1.5.21'
        agp_version = '4.2.2'
    } 
    dependencies {
        classpath "com.android.tools.build:gradle:$agp_version"
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }

compose dependencies

implementation "androidx.compose.ui:ui:$compose_version"
    implementation "androidx.compose.material:material:$compose_version"
    implementation "androidx.compose.ui:ui-tooling-preview:$compose_version"
    implementation "androidx.compose.compiler:compiler:$compose_version"
    implementation 'androidx.activity:activity-compose:1.3.1'
    androidTestImplementation "androidx.compose.ui:ui-test-junit4:$compose_version"

It fails while compiling saying `this version (1.0.1) of the Compose Compiler requires Kotlin version 1.5.21 but you appear to be using Kotlin version 1.4.31 which is not known to be compatible. Please fix your configuration (or

suppressKotlinVersionCompatibilityCheck

but don't say I didn't warn you!).` Any hints where

Kotlin 1.4.31

might be coming from?

Hi everyone. My company's application shows many notifications to the users. Some notifications have action buttons and we are using BroadcastReceiver to handle when users click the action button. Problem is that we are starting Activity from BroadcastReceiver but Android 10 (API level 29) and higher place restrictions on when apps can start activities when the app is running in the background. So there are some cases users click the button on the notification but nothing happens (activity not start). Does someone have any idea about this? Action button document URL: https://developer.android.com/training/notify-user/build-notification#Actions. Start activities restriction URL: https://developer.android.com/guide/components/activities/background-starts. Btw, I read the document of action button but the start activities restriction was not mentioned there. I think it should be mentioned so I created a document issue. https://issuetracker.google.com/issues/205606716