Was following along with Spring + Kotlin = Modern + Reactive + Productive presentation on YouTube! by creating a Kotlin-based Spring Web Flux Reactive app using https://start.spring.io/... Generated the project using these dependencies (please note the Spring Boot and Java…
Nothing that I have tried works on android 11 and earlier versions. Because I tried using different approach but it doesn't seem to be able to work on android 11 and earlier versions. Even if is something that can only…
I am developing an Android application using Firebase Realtime Database. According to Firebase document, Pass a custom Java object, if the class that defines it has a default constructor that takes no arguments and has public getters for the properties…
Is there a possibility to execute code when your activity is closed? And how do I close Realtime Database connections?
I was trying to display custom toast by on Long click of a button a default toast on click of a button but long click method is showing error line here is the code class MainActivity : AppCompatActivity() { override…
Possible solution: Upgrade Gradle wrapper to 7.2 version and re-import the project how to solve this issue in android Flamingo
The expertFragment() which shows lists of all users (except the current user). What I want is to divide users in two types- 1. Expert 2. normal Users. And to show experts to users and users to expert. Expert should logIn…
val btnAdd = findViewById<Button>(R.id.btnAdd) val btnSub = findViewById<Button>(R.id.btnSub) btnAdd.setOnClickListener { val tx1 = findViewById<TextInputEditText>(R.id.tx1).toString().toInt() val tx2 = findViewById<TextInputEditText>(R.id.tx2).toString().toInt() var result = findViewById<TextView>(R.id.result) result.text = (tx1 + tx2).toString() } I want to sum tx1 and tx2 but i get this message…
I make and Android App in Android Studio, and I have some problems with passing Float array from one Activity to another (I wanna pass this array and make a chart with MPAndroidChart). I found here how to pass a…
Hello i am getting such an error i couldn't find the solution for the error ; java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.chatapp/com.example.chatapp.MainActivity}: java.lang.NullPointerException: findViewById(R.id.addtoUserFriendList) must not be null My Code is: private lateinit var userRecyclerView: RecyclerView private lateinit var userList:…