kotlin

问题 I am trying to show text in webview with custom font which i have selected to show that font style. So following details explain the problem in code public void setFontFamily(String fontFamily) { exec("javascript:RE.setFontFamily('" + fontFamily + "');"); } So In JS file I have following the code RE.setFontFamily = function(fontFamily) { RE.restorerange(); //document.execCommand("insertHtml", false, "&nbsp") console.log("Font Family: "+fontFamily) document.execCommand("styleWithCSS", null,

问题 So I have have this an interface for the NetworkConfig.kt class: interface getProductList { @GET("stock") fun getProducts(@Query("outcode") stkOutcode: String): Call<OutletListPOJODataClasses> } and this is a code snippet from the Activity I use to fetch url: NetworkConfig().getProductListService() .getProducts() //What should i pass here ? .enqueue(object : Callback<ProductListPOJODataClasses> { override fun onFailure(call: Call<ProductListPOJODataClasses>, t: Throwable) { Toast.makeText(

问题 I have recently created and published an Android App bundle with compiled native libraries for all processors architectures. On most of devices everything is running ok. But on some of devices I can see this error in Crashlytics console Fatal Exception: java.lang.UnsatisfiedLinkError dalvik.system.PathClassLoader[DexPathList[[zip file "/system/framework/org.apache.http.legacy.boot.jar", zip file "/data/app/com.someapp-wAu5DoLmLvM_RVnbU1qsCg==/base.apk"],nativeLibraryDirectories=[/data/app/com

问题 I want to add a fixed interval in minutes between 2 button presses. I tried using postDelayed() and CountDownTimer but I'm able to press the button again if I restart the app. Using postDelayed() binding.trialButton.setOnClickListener { Timber.d("Delay button pressed") binding.trialButton.isEnabled = false binding.trialButton.postDelayed( { binding.trialButton.isEnabled = true }, 40*1000); } Using CountDownTimer binding.trialButton.setOnClickListener { Timber.d("Delay button pressed") binding

问题 I want to add a fixed interval in minutes between 2 button presses. I tried using postDelayed() and CountDownTimer but I'm able to press the button again if I restart the app. Using postDelayed() binding.trialButton.setOnClickListener { Timber.d("Delay button pressed") binding.trialButton.isEnabled = false binding.trialButton.postDelayed( { binding.trialButton.isEnabled = true }, 40*1000); } Using CountDownTimer binding.trialButton.setOnClickListener { Timber.d("Delay button pressed") binding

问题 I'm new to kotlin and i was trying to make a simple plus minus controller, so the layout has two buttons , Plus and Minus and an EditText both are inside a fragment, the issue is that when i'm trying to press one of the buttons the app crash on .setText with error Resuource not found. So the question is what is the right way to set text in an EditText inside a fragment? Here is my code: FirstFragment.tk override fun onViewCreated(view: View, savedInstanceState: Bundle?) { super.onViewCreated

问题 I always use allowmainthreadqueries() in Android Room. But many people say it is not recommend to do it. With this function, Room is very easy to use. But if i should change my app to not using this function, How do I do that? Is there an effective way to do it? 回答1: Yes, It is not a good approach to query DB on Main Thread. There are different ways, to keep the DB operation off the main(UI) thread, Mainly Kotlin Coroutines. https://developer.android.com/codelabs/kotlin-android-training

问题 Is there a Kotlin stdlib function to find the symmetric difference between two sets? So given two sets [1, 2, 3] and [1, 3, 5] the symmetric difference would be [2, 5] . I've written this extension function which works fine, but it feels like an operation that should already exist within the collections framework. fun <T> Set<T>.symmetricDifference(other: Set<T>): Set<T> { val mine = this subtract other val theirs = other subtract this return mine union theirs } EDIT: What is the best way get

问题 Is there a Kotlin stdlib function to find the symmetric difference between two sets? So given two sets [1, 2, 3] and [1, 3, 5] the symmetric difference would be [2, 5] . I've written this extension function which works fine, but it feels like an operation that should already exist within the collections framework. fun <T> Set<T>.symmetricDifference(other: Set<T>): Set<T> { val mine = this subtract other val theirs = other subtract this return mine union theirs } EDIT: What is the best way get

问题 I want to reach screen time of every application that's working on android system. For example, there are 3 hours of facebook working time but 1.2 hours of screen time. How can i get it? 回答1: android.app.usage UsageStats public final class UsageStats extends Object implements Parcelable java.lang.Object ↳ android.app.usage.UsageStats What you need I think is getFirstTimeStamp Get the beginning of the time range this UsageStats represents, measured in milliseconds since the epoch. and