I have a RecyclerView (say, rootRecyclerView) that can have different kinds of rows depending on some API response. I implemented one of them is a horizontal ViewPager2 and another one is implemented with horizontal RecyclerView (say, childRecyclerView). The rootRecyclerView swipes vertically whereas the view…
Tag: kotlin
Not currently allowed to connect to camera “1”
ANDROID Caused by java.lang.SecurityException: validateClientPermissionsLocked:1102: Callers from device user 0 are not currently allowed to connect to camera “1” Camera permission is granted. It is runned by a FOREGROUND SERVICE. Works on most devices, but there are few Android 9, Huawei, Motorol…
Kotlin (null cannot be cast to non-null type) Custom Calendar Implementation
I am trying to use the library https://github.com/kizitonwose/CalendarView (which was made in Kotlin) in Java. In this library there is an example to select a date. In the example, it had shown to do this: After trying to replicate this in my own android project, I wrote this: When my fragment launches, it ca…
Convert an existing Flutter Kotlin project to Flutter Java project
I created a Flutter project using default values, which are Kotlin for Android and Swift for iOS. Halfway through the project I needed to integrate a 3rd party Android SDK that requires Java. Can I convert a Flutter project to Java for Android after creation? I know I will need yo use Platform Channels to int…
Is it possible to create a ByteArray of ByteArrays as elements in kotlin?
I have some issues with creating a ByteArray var where its elements are also ByteArray, I don’t know is it possible first ? and how to ? Answer A ByteArray is just what it sounds like, an array of bytes. If you want to hold onto multiple byte arrays you can use a generic list or array. Something like th…
Gradle migration 3.1.4 -> 3.5.1; :app module doesn’t compile; ClassNotFoundException: Didn’t find class on path: DexPathList
I have two applications where I face the same issue while trying to update project target API from 27 to 29. To do this, first I need to update Gradle plugin at least to 3.2.+. Project is building fine with 3.1.4, but as soon as I rise Gradle plugin to: classpath ‘com.android.tools.build:gradle:3.5.1 di…
How to check if a class has overriden a default method from an interface using Reflection in Kotlin or Java?
I have an interface with a default method, and two classes which implement this interface. One of the classes overrides the default method, and the other does not. I get access to the giveHello method using reflection like this: There’s one weird thing here. The polite class does not override the giveHe…
Copy some values from one ArrayList to another kotlin
I have list: ComplexModel contains (Name,Title,StartDate,Summarry) I want to find better way to create new MutableList from skillsList but the new list have to get only Name and Title from the first.For the moment i`m with this solution but i wonder if there are better way to achieve this. Answer
Kotlin and Java project in Eclipse, NoClassDefFoundError, where are the class files?
In this question the basic configuration of Kotlin + Java + Gradle in Eclipse is described. It allows me to create Kotlin code. The Kotlin and Java natures are correctly present. Unfortunately, the code does not run. Not as Kotlin application nor as JUnit test. When my (i.e. created by me) Kotlin class is cal…
RecyclerView adapter not working with groupie
I tried to add groupie adapter to my recycler view as shown in the code below. However when i run my application, i get a compiler error saying my reyclerview cannot be null (because of kotlin null safe feature). I cant figure out why this adapter is not working. I know the problem is in the line : Here’…