kotlin

问题 This question already has answers here : Getters and Setters in Kotlin (5 answers) Closed 2 years ago . class Sample1 { private var test = "" get() = field set(value) { field = value }} This is my class. I want to keep the property as private and have to access the property through getter and setter. var sample1 = Sample1() I tried to create an object and access the property, but fails. When I go through the docs, I could found one interesting thing, "Getters always have the same visibility

问题 This question already has answers here : Getters and Setters in Kotlin (5 answers) Closed 2 years ago . class Sample1 { private var test = "" get() = field set(value) { field = value }} This is my class. I want to keep the property as private and have to access the property through getter and setter. var sample1 = Sample1() I tried to create an object and access the property, but fails. When I go through the docs, I could found one interesting thing, "Getters always have the same visibility

问题 Currently in my navgraph i have dialog fragment destination ( Fragment(dialog) type). When i'm navigating to this dialog and then try to navigate to another fragment from this dialog destination, dialog is closing which in my opinion is upredictable behaviour. Now i'm only navigating to the next fragment like this. findNavController().popBackStack(R.id.testFragment, true) I want to dialog not closing and only navigate to another dialog like a default fragment. How can i achieve this ? 回答1: As

问题 I'm taking Kotlin seriazliation for a test drive in a multiplatform project in Kotlin 1.4-M2, following the tutorial on github, but i'm not getting the serialization bit to compile. This is my build.gradle.kts plugins { val kotlinVersion = "1.4-M2" kotlin("multiplatform") version kotlinVersion kotlin("plugin.serialization") version kotlinVersion } repositories { mavenCentral() maven { url = uri("https://dl.bintray.com/kotlin/kotlin-eap") } maven { url = uri("https://kotlin.bintray.com/kotlinx

问题 I getting data from firestore put it in to ArrayList arraylist=document.get("questionsList") as ArrayList<Question> Toast.makeText(context, arraylist.size, Toast.LENGTH_LONG).show() and its ok when I print the size of Array put when I need to get Question Item from Arraylist Toast.makeText(context, arraylist!![0].question, Toast.LENGTH_LONG).show() the result is java.util.HashMap cannot be cast to Question document in firestore image here Question class class Question (var question:String,var

问题 I am trying to create my own Annotation processor in Android Studio project. I've created another module for that in Android Studio . I am able to compile the project. I can't just use autocomplete and other stuff. IDE treat all the references as unresolved references error in that case How can I resolve this issue? WHAT IS IMPORTANT When I created new libary module "autoadapter-process" by default Android Studio created it with this implementation in build.gradle for this module:

问题 I've have a ArrayList of ArrayList what I want to achive is , to sort them in decending order (based on Highest to lowest List size ) to get largest first and onwards. I did same thing in java using Collections.It worked perfectly fine there but now I'm unable to achieve this in Koltin i'm getting ERROR. Consider I've have class Foo() private var allHistoryList: ArrayList<ArrayList<Foo>> = arrayListOf() /** * Sorting array of array list to get Biggest to smallest array List based of size */

问题 I used the VideoView class in Android(Kotlin). Here I tried to find a way to assign a direct decrypt key to the video player . I used AES-128 Encryption. Shif language(AVPlayer) provides a delegate method to an AV player. I tried to same way in android. But doesn't Help. IS there any way to assign encryption keys to VideoView in Android. Thank you. my m3u8 content #EXTM3U #EXT-X-TARGETDURATION:8 #EXT-X-MEDIA-SEQUENCE:16 #EXT-X-VERSION:3 #EXT-X-KEY:METHOD=AES-128,URI="123.key" #EXTINF:8,

问题 Now I am working on some problems about passing the function as parameter in a function with vararg parameter with generic parameter. The below code works for one function as parameter into other function like that funA(funB(parameter):return1):return2 but when i make function like that funA(vararg funB(parameter):return1):return2 it doesn't works. I have tried somethings like Array or KFunction1 ViewModel fun callMultipleAPI( vararg observable: Observable<Any>):LiveData<Boolean>{ .....

问题 I went through available articles: 1, 2, 3. All of the articles nail down to the following options: Register custom PostgreSQL95Dialect which has jsonb type Implement Hibernate's UserType interface with custom mapping Annotate Entity with @TypeDef of custom implementation Define in application.properties custom dialect If all of the above is done, code is supposed to work. In my case I bump into mysterious Unable to build Hibernate SessionFactory; nested exception is org.hibernate