Predicate alternative in Kotlin

I try to create lambda in Kotlin. I has following Java interface: public interface Specification extends Serializable { @Nullable Predicate toPredicate(Root root, …

Error message – Creating a new Key store (PKCS12) (Andorid Studio)

I would like to pubish my app on the play store. Therefore at first I need to create a signed APK. Everytime I would like to create a new Key store two error messages appear (see below). First one: …

In Kotlin, how does GSON.fromJson(…) manage to mutate a read-only field of an existing object?

In Kotlin, how can an instance’s read-only val field be mutated? In the following Kotlin code, gson.fromJson(…) gets a Thing(0) from the InstanceCreator and somehow manages to mutate value from 0 to …

Combine two lists by ID

I have two lists of objects with contents that look like this: List A id = 1, name = “alex”, height = null, weight = 60 id = 2, name = “sara”, height = null, weight = 50 List B id …

AM Emulator: Library vulkan-1.dll: failed for handleCPUAcceleration [closed]

The Emulator shows following error when you run it in Android Studio on Windows 10: 04-04-2021 14:45 AM Emulator: handleCpuAcceleration: feature check for hvf 14:45 AM Emulator: cannot add library …

video streaming on Fragment of an android app

i want to stream a video from the firebase storage, in a fragment of my android app. but what even i try my video doesn’t launch or the app crash when i request the fragment. being a beginner, i have …

What is the difference between get() and addListenerForSingleValueEvent?

I see a lot of tutorials, documentation and questions about using the Firebase Realtime Database on Android talk about the addListenerForSingleValueEvent method. This method reads the value from the …

How to get list of restaurant operating days with time in a week from the API response string [closed]

Getting the response from API as below { “name”: “Restaurant name”, “operatingHours”: “Mon-Thu, Sun 11:30 am – 10:00 pm / Fri-Sat 11:30 am – 10:30 pm” }, {…

Jitpack Task ‘install’ is ambiguous in root project Android Library

I require your help to be able to upload a project, to give them context, I am adding dependencies to my library: implementation ‘com.google.android.gms:play-services-mlkit-text-recognition:16.1.2’ …

Using kotlin extension function in Java code

I have created an extension function for listening to click listener for buttons, when I try to access it from Java code it does not work, Cannot access clicks() from java file, this is what I tried …