Anyone know if android studio has a shortcut to toggle the debug area (bottom part of the creen)? In xcode

cmd+y

did this, but i cant seem to find an equivalent.

Anyone familiar with the

compileDebugAndroidTestKotlin

task having compilation error with

Unresolved reference: id

when using it in androidTest

withId(R.id..)

?

Is there an open source Android app project that’s well-written in Kotlin and well-structured? I’m looking for a good example project to send to a development team and say “that’s the type of structure and quality we’re aiming for”.

🍲 Foodium is a sample food blog Android application 📱 built to demonstrate use of Modern Android development tools Built with : Kotlin, Coroutines, Flow, Dagger 2, Architecture Components, MVVM, Room, Retrofit, Moshi, Material Components and other Jetpack libraries. Link - https://github.com/PatilShreyas/Foodium

If you are a junior developer looking for some tips on how to apply and get your dream job I wrote a series of article on Medium to help you. (I'm looking for feedback from developer with some exeperience as well). Here's the link to the first part https://proandroiddev.com/nailing-your-first-job-as-an-android-developer-part-1-build-your-portfolio-15f9d532def1

how do you approach updating the view model during long running tasks? I have to crawl data from ~20 websites and display it as a list. Do I: • make an

update publisher

(new items are being pushed into it) • refresh the view model data every let's say 1s • try to implement it so that if the user get's to the end of the list, more items are loaded

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android 11 emulator returns empty

Cursor

when trying to get audio files from

MediaStore

. ANy help?

I'm trying to do the following:

app:logo="@{viewModel.toolbarViewConfig.isMenuVisible}"

but I get the error

Cannot find a setter for <androidx.appcompat.widget.Toolbar app:logo> that accepts parameter type androidx.lifecycle.MutableLiveData<java.lang.String>

If a binding adapter provides the setter, check that the adapter is annotated correctly and that the parameter type matches.

I somehow want to set the app:logo to empty. I tried it here:

viewModel.toolbarViewConfig.isMenuVisible.value = ""

I’m building a counter app with MVP design pattern in Android Studio. I want to hide my reset button when the value of the counter is 0 so where should I put my code for controlling it’s visibility? I have the following classes: • MainActivity.kt (Class) • MainActivityPresenter.kt (Class) • MainActivityModel (Class) • ContractInterface.kt (Interfaces)

I’m having trouble mocking

ActivityInfo.exported

with Mockito. Here’s the relevant part of my code:

private fun makeResolveInfo(appName: String, packageName: String, exported: Boolean = true) : ResolveInfo {
    val activityInfo = mock(ActivityInfo::class.java)
    `when`(activityInfo.exported).thenReturn(exported)
    // code omitted
}

The error is:

org.mockito.exceptions.misusing.MissingMethodInvocationException: 
when() requires an argument which has to be 'a method call on a mock'.
For example:
    when(mock.getArticles()).thenReturn(articles);

Also, this error might show up because:
1. you stub either of: final/private/equals()/hashCode() methods.
   Those methods *cannot* be stubbed/verified.
   Mocking methods declared on non-public parent classes is not supported.
2. inside when() you don't call method on mock but on some other object.

Here is the javadoc for the

exported

getter (which is in

ComponentInfo

, which

ActivityInfo

extends): https://developer.android.com/reference/android/content/pm/ComponentInfo#exported

Hello I want to see coroutine all `dispatcher`’s call stack. I wrote

android test

source code 

// AnyTest.kt

@Test
fun callStackCrop_a() = runBlocking {
  a(0)
  a(1)
  a(2)
  a(3)
  a(10)
  ***a(11)***   // 76 line
  a(12)
}

suspend fun a(x: Int): Unit = b(x)   // this action cropped....
suspend fun b(x: Int) = withContext(<http://Dispatchers.IO|Dispatchers.IO>) {
  c(x)      // 82 line
}
suspend fun c(x: Int) {
  if (x > 10) {
    throw NullPointerException("ops x = ${x} > 0")   // 86 line
  }
}

Test result is that

at ___.AnyTest.c(AnyTest.kt:86)
	at ___.AnyTest$b$2.invokeSuspend(AnyTest.kt:82)
	at |b|b|b(Coroutine boundary.|b(|b)
	at ___.AnyTest$koroChase$1.invokeSuspend(AnyTest.kt:76)
Caused by: java.lang.NullPointerException: ops x = 11 > 0
	at ___.AnyTest.c(AnyTest.kt:86)
	at ___.AnyTest$b$2.invokeSuspend(AnyTest.kt:82)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
	at kotlinx.coroutines.DispatchedTask.run(Dispatched.kt:241)
	at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:594)
	at kotlinx.coroutines.scheduling.CoroutineScheduler.access$runSafely(CoroutineScheduler.kt:60)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:740)

"Calling

b() method

at

a()

" is removed….. I want to see

all call stack trace

in coroutine how to recover this call stack.....? Attach a link with a similar problem https://github.com/Kotlin/kotlinx.coroutines/issues/1660

Hi! I wrote this extension to be able to handle back button event in fragments:

fun Fragment.onBack(consume: Boolean = false, callback: () -> Unit) {
    activity?.onBackPressedDispatcher?.addCallback {
        callback()
        if (!consume) {
            findNavController().navigateUp()
        }
    }
}

Works perfectly when I don't want to consume the event. It also works when I consume it, except that after it the back button is dead. How do I consume only the current back press?

I’m trying to get

assert()

to do something meaningful. I note that I’m supposed to run the JVM with

-ea

(as per https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/assert.html). But where do I actually do that at?

Looking for books recommendations for an intermediate android dev. Or courses to improve my skills. Anyone?

I know it sounds stupid, but following are 2 scenarios. I wonder why the compiler complain about 1) but on 2) there is nothing? Obviously on 2), T can't be null

Does anyone know if it's possibly to write a lint check that just warns if there's a specific import being used?

hi just a quick question , where are Obervables usually put in a kotlin android app ?

Having issues upgrading Kotlin plugin to 1.3.71 in Android Studio 3.6.1. Says to check logs, but the log says very little. This is the only thing showing up in the log during the installation. Is the last warning a pointer that makes sense to anyone?

2020-03-25 09:16:27,867 [566297214]   WARN - ConfigurableExtensionPointUtil - ignore deprecated groupId: language for id: preferences.language.Kotlin.scripting 
2020-03-25 09:16:27,870 [566297217]   WARN - ConfigurableExtensionPointUtil - use other group instead of unexpected one: project.propCompiler 
2020-03-25 09:16:28,095 [566297442]   INFO - j.ide.plugins.RepositoryHelper - using cached plugin list (updated at 25/03/2020, 09:10) 
2020-03-25 09:16:28,306 [566297653]   WARN - llij.ide.plugins.PluginManager - 4.0 not loaded: since build 193.5233.102 > AI-192.7142.36.36.6241897

Heya, one Android specific question. Is there any way to manually tigger

onConfigurationChanged

? I’m dealing with the locales, and when I do update it manually I need to somehow

recreate

the views, recreating activity will kick user out and he will need to re-log so I would rather try to avoid that. I’m also trying with the following but it doesn’t work completely which is weird in fairness:

val res = resources
val configuration = res.configuration
configuration.setLocale(Locale(preferences.userLocale))
onConfigurationChanged(configuration)

In a RecyclerView adapter, I have

init {
    someInstance.someVal = { someHelper.someFun(it) }
}

and LeakCanary hinted that this was causing a leak, so (as a complete stab in the dark) I switched to using a method reference and the leak seemed to go away. Can anyone explain why such a seemingly minor change could fix a leak, please?

init {
    someInstance.someVal = someHelper::someFun
}

Hey, so im converting an internal Java library to Kotlin and keep running into

class file for kotlin.jvm.internal.markers.KMappedMarker not found

whenever im compiling the project implementing the library. I’ve added the kotlin stdlib to the library as a dependecy like so:

api("org.jetbrains.kotlin:kotlin-stdlib:1.3.71")

It does compile if i add kotlin to the project implementing the library but we would like to avoid that if possible. any tips/pointers would be appriciated, Thanks!

Has anyone ran into issues with a viewmodel directly invoking a navcontroller? The handoff for navigation between a fragment and viewmodel is not at all elegant so I'm thinking about just injecting the navcontroller into the viewmodel but I'm having a hard time finding references that support that idea

I am learning sunflower app and came across this

tabFragmentsCreators

variable https://github.com/android/sunflower/blob/master/app/src/main/java/com/google/samples/apps/sunflower/adapters/SunflowerPagerAdapter.kt#L32 What is the benefit of using a

Map<Int, () -> Fragment>

instead of just

Map<Int, Fragment>

Can I create Flipboard's flipping animation using the new MotionLayout?

helooo, how to access layout (a_layout.xml) in module (common module) from other module (feature module) was include in b_layout.xml ? any idea? im trying with kotlin synthetic but error :

unresolved reference