kotlin

问题 I want to convert a date string to unix timestamp from a date string e.g. 14-02-2018 Can someone help? 回答1: Since JDK 8 you can do: val l = LocalDate.parse("14-02-2018", DateTimeFormatter.ofPattern("dd-MM-yyyy")) val unix = l.atStartOfDay(ZoneId.systemDefault()).toInstant().epochSecond Note that the example uses your system's default timezone. 回答2: use this to convert the date string to UNIX timestamp val date = SimpleDateFormat("dd-MM-yyyy").parse("14-02-2018") println(date.time) 来源： https:/

问题 is there an equivalent for the java reflection foo.getClass().getFields() in Kotlin? I could only find that I can access a field when I know it's name, but I would like to handle fields in a generic way. 回答1: Did you want fields as-in "backing field" or fields as in "properties" ... Kotlin really only has properties. You can get these for some class using: MyTest::class.memberProperties // or MyTest::class.declaredMemberProperties And from a Java Class<T> , use the kotlin extension property

问题 As the title says, I am trying to mix Java and Kotlin in a single project. There's a good example found here. mixed-java-kotlin-hello-world. Everything is working properly besides kotlin cannot find any of my Java classes which are found in src/main/java/somepackage/SomeClass.java What would be the cause of this? This is the error I am getting. When I try to edit my build.gradle, it shows I'm not spelling kotlin correctly and giving me errors on plugin but I'm copying and pasting from kotlins

问题 As the title says, I am trying to mix Java and Kotlin in a single project. There's a good example found here. mixed-java-kotlin-hello-world. Everything is working properly besides kotlin cannot find any of my Java classes which are found in src/main/java/somepackage/SomeClass.java What would be the cause of this? This is the error I am getting. When I try to edit my build.gradle, it shows I'm not spelling kotlin correctly and giving me errors on plugin but I'm copying and pasting from kotlins

问题 As the title says, I am trying to mix Java and Kotlin in a single project. There's a good example found here. mixed-java-kotlin-hello-world. Everything is working properly besides kotlin cannot find any of my Java classes which are found in src/main/java/somepackage/SomeClass.java What would be the cause of this? This is the error I am getting. When I try to edit my build.gradle, it shows I'm not spelling kotlin correctly and giving me errors on plugin but I'm copying and pasting from kotlins

问题 As the title says, I am trying to mix Java and Kotlin in a single project. There's a good example found here. mixed-java-kotlin-hello-world. Everything is working properly besides kotlin cannot find any of my Java classes which are found in src/main/java/somepackage/SomeClass.java What would be the cause of this? This is the error I am getting. When I try to edit my build.gradle, it shows I'm not spelling kotlin correctly and giving me errors on plugin but I'm copying and pasting from kotlins

问题 ERROR: No signature of method: build_ap86oam3dut3pxce3x49rdtma.android() is applicable for argument types: (build_ap86oam3dut3pxce3x49rdtma$_run_closure1) values: [build_ap86oam3dut3pxce3x49rdtma$_run_closure1@47588b04] The build gradle is: apply plugin: 'com.android.application' android{ implementationSdkVersion 28 buildToolsVersion "29.0.3" defaultConfig { applicationId "com.uiresource.taksiku" minSdkVersion 16 targetSdkVersion 28 versionCode 1 versionName "1.0" testInstrumentationRunner

问题 ERROR: No signature of method: build_ap86oam3dut3pxce3x49rdtma.android() is applicable for argument types: (build_ap86oam3dut3pxce3x49rdtma$_run_closure1) values: [build_ap86oam3dut3pxce3x49rdtma$_run_closure1@47588b04] The build gradle is: apply plugin: 'com.android.application' android{ implementationSdkVersion 28 buildToolsVersion "29.0.3" defaultConfig { applicationId "com.uiresource.taksiku" minSdkVersion 16 targetSdkVersion 28 versionCode 1 versionName "1.0" testInstrumentationRunner

问题 I'm trying to build a sample Android App to extract the depth map of portrait mode photos taken with the google camera app. I know that it's saved along the blurred photos. I read the Dynamic Depth Format documentation coming from Google : https://developer.android.com/training/camera2/Dynamic-depth-v1.0.pdf It's pretty new and I don't find any resource related to this subject or how to manage the extraction of an android portrait's depth map. I used metadata-extractor library to read file's

问题 I'm trying to build a sample Android App to extract the depth map of portrait mode photos taken with the google camera app. I know that it's saved along the blurred photos. I read the Dynamic Depth Format documentation coming from Google : https://developer.android.com/training/camera2/Dynamic-depth-v1.0.pdf It's pretty new and I don't find any resource related to this subject or how to manage the extraction of an android portrait's depth map. I used metadata-extractor library to read file's