Recent questions tagged Kotlin

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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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547 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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587 views

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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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824 views

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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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610 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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542 views

1 answer

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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749 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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1.3k views

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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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650 views

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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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470 views

1 answer

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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600 views

1 answer

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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664 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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536 views

1 answer

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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1.0k views

1 answer

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)

0 votes

547 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...