kotlin

I write a simple program in kotlin. Creating an application that has one screen. The screen color is white, and the text fiel ... lement of the screen is called root_srl. I tried something like root_srl.getBackground (), but I didn't find anything similar

On the site with documentation for Dagger 2, there is the following example code and words: class CoffeeMaker { @Inject He ... In case the Heater object has not been created before? And if this is its object is it currently being used by another class?

Please tell me, was there such a code in the Java project before private static Queries q; private static SQLiteDatabase db; ... tion(), and can I call it as before in Java classes with this method? q = App.getQueriesInstance(getApplicationContext());

Until today, I did not work with the api and I had a question about the use of the token. How to establish a connection to th ... eader.readLine() } return null } override fun onPostExecute(result: Void?) { super.onPostExecute(result) } }

I just started learning kotlin and korutin, so please do not swear too much for a stupid question. It is necessary to wait f ... ould be possible to press btnStop and stop cycle. But in my code, everything hangs during the loop, including all the Views.

I've read a bunch of topics on this subject, but there are other questions from me already. What are the advantages of kno ... rm in general can you create games on J. + K.? Is it possible to create 3D games in these languages separately or together?

I have an alertdialog in which I create a radiogroup, how can I change the color of the text and the color of the radiobutton ... or.BLACK) } else{ dialog.getWindow()!!.setBackgroundDrawableResource(R.color.pole) } dialog.show() }

Faced with a very simple problem, but I can not understand why it is not solved. There are two Activities, when passing from ... xt = dateInString } In him the variable id gets from MainActivity, and in onOptionItemSelected, does not want to get out.

As you know, in Android Q (API=29), Google once again changed the rules for accessing external memory (external storage) and ... rd design: SQLiteDatabase db=SQLiteDatabase.openDatabase(file.getPath(), null, SQLiteDatabase.OPEN_READWRITE);

There is a separate fragment with a Recyclerview. You need to "include" some items in the recycler view in order for it to di ... android:src="@drawable/ic_play_button"> </ImageView> </RelativeLayout> </LinearLayout>

I have 2 activities. After switching from the first to the second, I want to display a back arrow in the AppBarLayout, which ... tivity. How do I do this? P. s: I need this because the back button toggles my menu, which is located in the activity itself.

Previously, in Java, I used scheduleAtFixedRate() to count down the time Is there anything new in Kotlin? And is there any ... solution... Update2 I think I understood, the second number is not the time when the timer ends, but the size of the tick?

I have the code on Kotlin (Android Studio 3.5): Class RadioPlayerActivity : AppCompatActivity() { private lateinit var pla ... iew){ playWhenReady = false; } } In the first case, the stream is played back. In the Java code-silence. What's wrong?

Is it possible to set a specific color for all the states of the selected area in the blue rectangle? For example, the Erro ... all the components of the TextField red, but is it possible to make the selected area remain a specific color and not change?

I have a function that triggers when a button is pressed: fun cellPress(view: View) { } How do I change the button ... ithout using findViewById<>()? Something like this: fun cellPress(view: View) { view.setText("text") }

In C#, there is a BitConverter c method ToInt32. Is there a similar analogue in Kotline?

I wrote a server in Python and a client in Kotlin. When I launch an app in Android Studio and click on the button that should ... taOutputStream(socket.getOutputStream()) dout.writeUTF("Hello") dout.flush() dout.close() socket.close() }

I am studying Android development and came across a question. Let's say I create an arbitrary class and there I need to call ... se the findViewById method. What to do in such situations? Is it reasonable to pass Context to the constructor of this class?

What I have: there is a microservice on Spring boot, with the web and MongoDB as a storage. For integration tests, I use test ... runs/576320155?check_suite_focus=true The funny thing is that if you rewrite the tests and config in java, everything works)

There is a POST request to the server using the Retrofit library. If the request is successful, a certain object with data is ... d()) .subscribe({ view.onSuccessful() }, { view.onFailure(it.message!!) }) }