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kotlin - How to overcome "same JVM signature" error when implementing a Java interface?
    With the code below, I am getting the following error in IntelliJ IDEA 13.1.6 and Kotlin plugin 0.11.91. ... Kotlin-ish. What am I missing? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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585 views
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kotlin - Flowable concatMapSingle without prefetch to ignore clicks until processing finishes
    I want to handle clicks in such a way that they are ignored as long as I'm doing processing of some click ... use to achieve the desired effect? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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kotlin - What are the rules of semicolon inference?
    Kotlin provides semicolon inference : syntactically, subsentences (e.g., statements, declarations etc) are ... writing erroneous code? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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892 views
1 answer
kotlin - Parameter does not have a match; SimpleXML
    I am using retrofit with the SimpleXMLConverterFactory. And I always get an ConstructorException: Parameter 'success' ... given xml. Thanks See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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631 views
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kotlin - How do I call extension methods from outside the class they are defined in?
    Here is a minimal example that demonstrates the problem: abstract class Base { abstract fun String.extension(x: ... have the extension method. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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572 views
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kotlin - How to pass the values from activity to another activity
    As I'm learning Kotlin for Android development, I'm now trying the basic programs like hello world and how to ... in Kotlin if not by intent. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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814 views
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kotlin - Hilt using in android library
    I would like to try Hilt DI in the android library. It is a dependency on another project, with its own ... issue and can share his insights. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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kotlin - How to create masterKey after MasterKeys deprecated in Android
    I am using the following code to store some information encrypted in my app. val masterKey ... .PrefValueEncryptionScheme.AES256_GCM); See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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kotlin - How to declare several properties on one line
    I'm developing a class with several lateinit properties of one type. I think it's too verbose to declare each ... on one line in Kotlin? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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kotlin - How can I detect programmatically if the Android Device is in Dark Mode?
    I'm trying to support the Android Q Dark theme for my Android app and I can't figure out how to import different ... a way I get that flag? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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kotlin - What is a purpose of Lambda's with Receiver?
    What is a purpose of Lambda's with Receiver in Kotlin, while we have extension functions ? Two functions below do ... this == it.toIntOrNull()} See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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735 views
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kotlin and @Valid Spring annotation
    I have an entity: class SomeInfo( @NotNull @Pattern(regexp = Constraints.EMAIL_REGEX) var value: String) { var id: ... it less wordy? Thanks. See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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579 views
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kotlin - Passing lambda instead of interface
    I have created an interface: interface ProgressListener { fun transferred(bytesUploaded: Long) } but can use it only ... What am I doing wrong? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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1.1k views
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kotlin - How to make "inappropriate blocking method call" appropriate?
    I am currently trying to leverage kotlin coroutines more. But I face a problem: when using moshi or okhttp inside ... to be inappropriate ;-) See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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569 views
1 answer
kotlin - How to fix Expected Android API level 21+ but was 19 in Android
    In my application i want get data from server, for get connect to server i used Retrofit, OkHttp. But when running ... ' How can i fix it? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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kotlin - Inline function cannot access non-public-API: @PublishedApi vs @Suppress vs @JvmSynthetic
    In Kotlin, when I have a non-public member and an inline fun that calls it, there's a compilation error saying: ... solution that I don't see? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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671 views
1 answer
kotlin - What is the purpose of Unit-returning in functions
    From the Kotlin documentation: If a function does not return any useful value, its return type is Unit. Unit is ... there? What is this VALUE? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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1.3k views
1 answer
kotlin - Accidental override: The following declarations have the same JVM signature
    I'm getting error in Kotlin in this part: class GitHubRepoAdapter( private val context: Context, private val values ... is causing the problem. See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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696 views
1 answer
kotlin - Coroutines: runBlocking vs coroutineScope
    I was reading Coroutine Basics trying to understand and learn it. There is a part there with this code: fun main ... me here? Thanks in advance. See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
569 views
1 answer
kotlin - Retrofit call inside an adapter in android
    I'm performing a retrofit call inside an adapter..i have successfully implemented and also it is giving me the desired output ... ) ) val id =dataList?.get(position)?.product?.id...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
753 views
1 answer
kotlin program error: no main manifest attribute in jar file
    I wrote a simple kotlin helloworld program hello.kt fun main(args: Array<String>) { println("Hello, World!") } Then ... 40, JDK version is 1.8.0 See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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614 views
1 answer
kotlin - Cross references in type parameters
    For example in Java I could write: public abstract class Element<S extends Snapshot> { ... } public ... type parameter restrictions in Kotlin? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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664 views
1 answer
kotlin - Using return inside a lambda?
    In the code below, I want to show my empty views if trips is empty and then return and avoid running the ... there's a few more conditions. See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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747 views
1 answer
kotlin - Android Studio 3.0 - Unable to find method 'com.android.build.gradle.internal.variant.BaseVariantData.getOutputs()Ljava/util/List'
    Trying to start a new Kotlin project with Android Studio 3.0 Canary 1 displays this error. Full trace: Error: ... does not have this problem. See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
518 views
1 answer
kotlin - Why not use GlobalScope.launch?
    I read that usage of Globalscope is highly discouraged, here. I have a simple use-case. For every kafka ... (Buzzword-compliant if you will) See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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1.3k views
1 answer
kotlin - android.view.View.systemUiVisibility deprecated. What is the replacement?
    I have updated the project target API version to 30, and now I see that the systemUiVisibility property is deprecated. ... 't how to do that. See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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510 views
1 answer
kotlin - Error : Program type already present: android.support.design.widget.CoordinatorLayout$Behavior
    I am getting the following error while building the project. haven't used CoordinatorLayout in this project. just added ... processor:3.1.0" } See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
0 votes
996 views
1 answer
kotlin - Android Room - Select query with LIKE
    I'm trying to make a query to search all objects whose names contain text: @Query("SELECT * FROM hamster WHERE name ... : arg0 How to fix this? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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