What happens to tasks enqueued in Workermanager and app faces process death ? Will those tasks survive and later when app is relaunched will it be started or how it is ?

Hello 👋 Do you have a good example on how can I make Jenkins calculate the APK size and methods count changes for each build? I checked diffuse, but was looking if someone tried to integrate it before with Jenkins or have another options

So I just implemented my drawer and all the menu-items inside of it. I'm able to navigate between my fragments through the menu-items, however, if im in fragment A and click on the menu-item that takes me to fragment A, another view will be created on top of it. So I'm able to create several fragments on top of each other. How can I solve this?

Hi Everyone, I have one old Android project, written in Java and recently created a library using Kotlin and all latest features. When I imported it in Java Android project, I am stuck with this error... java.lang.RuntimeException: Unable to start activity ComponentInfo{MainActivity}: android.view.InflateException: Binary XML file line #29: Error inflating class com.google.android.material.navigation.NavigationView Can't I use Kotlin library in Java project?

Hi Guys, I was wondering whether anyone has been testing coroutine with Espresso? it is a common pattern with MVVM to do something like:

class AViewModel() : ViewModel() {
    val liveData = MutableLiveData<SomeData>()
    ...
    fun doSomething() {
        viewModelScope.launch {
            //... do some long operation ....
            liveData.value = resultOfLongOperation
        }
    }
}

and observe the live data in Fragment or Activity like:

...
    val viewModel by viewModels<AViewModel> { ... }
    ...
    fun onViewCreate(...) {
        button.setOnclickListener {
            viewModel.doSomething()
        }
        
        viewModel.liveData.observe(viewLifecycle, Observer { result ->
        textView.text = result
    })
    }
...

I was wondering how to do UI test for the Code above. Since the

doSomething()

takes a while to complete, my

Espresso

test is failing. Can anyone share how they do their test? Thank you very much.

Hi Everyone, I want to execute sub-query using LiveData observer mechanism. Is it possible? How? Thanks for help, in advance!

Hello everyone. I use the Room as database in my app. In my DAO, I use Flow as the return type so that the user interface updates automatically when the underlying data changes. The problem is that if an error occurs and I process it with the catch operator, I will never receive an update again in Flow. I don’t know how I can keep an active subscription to the database in case of an error. I would be grateful for any advice

Hi, Any one help me how to fix this issue. Thanks in advance. Fatal Exception: java.lang.NullPointerException: Attempt to invoke interface method 'void android.os.Parcelable.writeToParcel(android.os.Parcel, int)' on a null object reference This is happening in kotlin model class

Can someone help me with custom notification sounds? Do i have to recreate a new channel every time I the user changes it in my app? Currently I have to uninstall the app to get the new sound working. That doesn’t seem correctly?

Hi, i start a picker with this code. i want to get the path for then read that file and send it to my backend with multipart using this line, in a xiaomi device works fine, there the path looks like this "/storage/emulated/0/Download/images.jpeg"

File(photoPath).asRequestBody("image/jpg".toMediaTypeOrNull())

//REQUEST_CODE_PICK_IMAGE = 101

Intent(Intent.ACTION_PICK).also {
    it.type = "*/*"
    val mimeTypes = arrayOf("image/jpeg", "image/png", "application/pdf")
    it.putExtra(Intent.EXTRA_MIME_TYPES, mimeTypes)
    startActivityForResult(it, REQUEST_CODE_PICK_IMAGE)
}

and then i use this

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    super.onActivityResult(requestCode, resultCode, data)
    if (resultCode == Activity.RESULT_OK) {
        when (requestCode) {
            REQUEST_CODE_PICK_IMAGE -> {
                selectedImageUri = data?.data
                Log.i("develop", "data: ... $data")
                image.setImageURI(selectedImageUri)
                homeViewModel.selectedImageUri = selectedImageUri?.lastPathSegment.toString()
            }
        }
    }
}

What is the industrial standard in identifying errors in production, without letting the user's app crash?

Hey! I got a question about databinding. I got the library which I can implement as project or from maven. With Maven it works well, but when I do it as project than binding stops to generate BindingImpl classes which xml files contain custom adapters from library. Why it may happens? Also I can navigate to source code of adapters from xml.

How do I access a file (.md for example) in a kotlin module/library? The file is located in the module.

I accidentally clicked on an option along the lines of “supress all warnings for unused binding adapters” from the quick action menu (ctrl/opt + enter). How do I undo that ?

Guys, can I ask a question. I have a RecyclerView, with a ViewHolder which has a View with Button and TextView. I want to simulate a click on the Button but I dont know how. Can anyone guide me?

This message was deleted.

Hello @everyone,When taking a photo on a Samsung I get the following error :

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.securitas.aviation.satt/com.auxo.satt.main.MainActivity}: androidx.fragment.app.Fragment$InstantiationException: Unable to instantiate fragment com.auxo.satt.main.fragment.MainFragment: could not find Fragment constructor

Is there an easy way to limit a DatePicker to only allowing Month and Year selection, or would it be easier to implement my own?

If I use

*::class.java.name

in my code, and I have proguard/r8 set up for that class to obfuscate it, the return value of that code would be the obfuscated version too?

Will next week's livestream be available to watch immediately after it's over? https://developer.android.com/android11

it doesn't seem right to do the db query in the view

@here is there any performance difference between DataBinding / ViewBinding and Kotlin Synthetics ?

hello there, I just want to know if there’s a server rendering solution for Android, like getting json describe the ui and a generator in android to do that, I know about compose but I need a production ready solution

I want to return the string form of the Json response. The error I get is "Expected a string but was BEGIN_OBJECT at path$"

private const val BASE_URL = "<https://newsapi.org/v2/>"
private const val API_KEY = "1234"

private val moshi = Moshi.Builder()
    .add(KotlinJsonAdapterFactory())
    .build()

private val retrofit = Retrofit.Builder()
    .addConverterFactory(MoshiConverterFactory.create())
    .baseUrl(BASE_URL)
    .build()

interface NewsApiService {
    @GET("top-headlines?country=us&apiKey=${API_KEY}")
    fun getProperties():
            Call<String>
}

object NewsApi {
    val retrofitService : NewsApiService by lazy {
        retrofit.create(NewsApiService::class.java) }
}

class NewsViewModel : ViewModel() {

    // The internal MutableLiveData String that stores the most recent response
    private val _response = MutableLiveData<String>()

    // The external immutable LiveData for the response String
    val response: LiveData<String>
        get() = _response

    /**
     * Call getNewsData() on init so we can display status immediately.
     */
    init {
        getNewsData()
    }

    /**
     * Sets the value of the status LiveData to the News API status.
     */
    private fun getNewsData() {

        _response.value = NewsApi.retrofitService.getProperties().enqueue(
            object: Callback<String> {
                override fun onFailure(call: Call<String>, t: Throwable){
                    _response.value = "Failure: " + t.message
                }

                override fun onResponse(call: Call<String>, response: Response<String>) {
                   _response.value = response.body()
                }
            }).toString()
    }
}

I’m seeing following issue with LiveData and

viewLifecycleOwner.lifecycleScope.launch

If I’m trying to update live data in my VM from

.value

other fragments with same VM do not get it from observer. I have to use

postValue

and in that case it delivered properly. Does anyone know why could it be? Previously I have been using

uiScope

uiScope = CoroutineScope(Dispatchers.Main + job)

to launch coroutines inside my fragments and it was working fine with

.value

but after I switched to

viewLifecycleOwner.lifecycleScope

it is not anymore.

Any idea on how to get the screen height on Android... Trying to use

Display.getMetrics

but the API is not consistent... On some devices the method includes the status bar height while on others it gives only the usable area of the screen...

How can I achieve that this

DividerItemDecoration

is only shown between sections and not between rows?