kotlin

问题 There are some answers using java in stackoverflow but i am unable to convert it into kotlin code. I am new to kotlin. Please tell me how to transfer bitmap data from one activity to another using Intent 回答1: You need to pass the bitmap as an extra argument to the intent while starting the activity. val intent = new Intent(this, NewActivity::class.java) intent.putExtra("BitmapImage", bitmap) startActivity(intent); and retrieve it as: val bitmap = this.intent?.getParcelableExtra("BitmapImage")

问题 In my app I have two activities. The main activity that only has a search button in the Appbar and a second, searchable, activity. The second activity hold a fragment that fetches the data searched in it's onCreate call. My problem is that the fragment fetches the data twice. Inspecting the lifecycle of my activities, I concluded that the searchable activity gets paused at some point, which obviously determines the fragment to be recreated. But I have no idea what causes the activity to be

问题 I am trying to set up Google Play Licencing for an app in Android studio for an app written in Kotlin. My goal is to avoid users sharing APK files without purchasing my app through the store. What I've tried: I've tried following through their documentation. It's not very useful. It skips over many details and it's not really a tutorial. I couldn't use it. I've seen this question, which does have a long and detailed tutorial-like answer. But the answer seems long-outdated. It causes lots of

问题 I am trying to set up Google Play Licencing for an app in Android studio for an app written in Kotlin. My goal is to avoid users sharing APK files without purchasing my app through the store. What I've tried: I've tried following through their documentation. It's not very useful. It skips over many details and it's not really a tutorial. I couldn't use it. I've seen this question, which does have a long and detailed tutorial-like answer. But the answer seems long-outdated. It causes lots of

问题 I making my profile fragment and I want to display the post and the number of post in the Profile of the app. I have searched for the code from websites and I wrote this codes but this codes are not working. Here is my code class ProfileFragment : Fragment() { var fragmentView: View? = null var firestore: FirebaseFirestore? = null var uid: String? = null var auth: FirebaseAuth? = null var currentUserUid: String? = null override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,

问题 I making my profile fragment and I want to display the post and the number of post in the Profile of the app. I have searched for the code from websites and I wrote this codes but this codes are not working. Here is my code class ProfileFragment : Fragment() { var fragmentView: View? = null var firestore: FirebaseFirestore? = null var uid: String? = null var auth: FirebaseAuth? = null var currentUserUid: String? = null override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,

问题 I making my profile fragment and I want to display the post and the number of post in the Profile of the app. I have searched for the code from websites and I wrote this codes but this codes are not working. Here is my code class ProfileFragment : Fragment() { var fragmentView: View? = null var firestore: FirebaseFirestore? = null var uid: String? = null var auth: FirebaseAuth? = null var currentUserUid: String? = null override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,

问题 I'm trying to create an Image detection app using Arcore. I want to know that is there any way we can create Arreference Image without added into the augmented database like ARkit. ? Thanks in Advance. 来源： https://stackoverflow.com/questions/62339835/can-we-use-imageurl-augmentedimagedatabase

问题 I cannot get correct img src. This is HTML I want to get.This image is data scheme URI. <img class="rg_i Q4LuWd tx8vtf" src="data:image/jpeg;base64,9j/4AAQSkZJR ~~~ TOO LONG ~~~/Z" data-deferred="1" jsname="Q4LuWd" alt="大阪の保護猫カフェ - SAVE CAT CAFE" data-iml="610.9050000086427" data-atf="true"> And, This is my code. val url = "https://www.google.com/search?q=cat&sxsrf=ALeKk01jWgnZ1Jwok_XfrhRYTdkwZecETg:1587538774281&source=lnms&tbm=isch&sa=X&ved=2ahUKEwiy3dTluvvoAhUPyosBHQtMAP8Q_AUoAXoECA8QAw

问题 I want to use vararg with generics with different types of each arguments what I've already tried: class GeneralSpecification<T> { fun <P> ifNotNullCreateSpec(vararg propToCreateFun: Pair<P?, (P) -> Specification<T>>): List<Specification<T>> = propToCreateFun.mapNotNull { (prop, funCreateSpec) -> prop?.let(funCreateSpec) } ... } but I can't use this like: ifNotNullCreateSpec("asdf" to ::createStringSpec, 5 to ::createIntSpec) (different types in vararg pairs) How can I use vararg with