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Obsidian-Main/20. 專注/Android/Ktor.md

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2024-06-05 19:06:00

Ktor是由Kotlin提供的一個framwork。 要在Android使用Ktor需要在build.gradle加入以下的dependency:

implementation "io.ktor:ktor:1.2.5"
implementation "io.ktor:ktor-server-netty:1.2.5"
implementation "io.ktor:ktor-gson:1.2.5"

packagingOptions裡,也需要加入以下的設定來必面編譯問題Ktor#^68d958

packagingOptions {
    exclude 'META-INF/*'
}

AndroidManifest.xml記得加入internet的權限

<uses-permission android:name="android.permission.INTERNET"/>

然後就是HTTP Server的code了

embeddedServer(Netty, 8080) {
    install(ContentNegotiation) {
        gson {}
    }
    routing {
        get("/") {
            call.respond(mapOf("message" to "Hello world"))
        }
    }
}.start(wait=true)

但是這段code會block所以需要一個thread把它包起來

Thread {
    httpEngine = embeddedServer(Netty, 8080) {  
        install(ContentNegotiation) {  
            gson {}  
        } 
        routing {  
            get("/") {  
                call.respond(mapOf("message" to "Hello world"))  
            }  

            get("/say/{something}") {  
                call.respond(mapOf("message" to "You say: " + call.parameters["something"]))  

                activity?.findViewById<TextView>(R.id.textView)?.text = "You say: " + call.parameters["something"]  
            }  
        } 
    }.start(wait = false)  
}.start()

參考來源

  • 如果沒有這一段會產生如下錯誤 ^68d958
13 files found with path 'META-INF/INDEX.LIST'.
Adding a packagingOptions block may help, please refer to
https://developer.android.com/reference/tools/gradle-api/7.4/com/android/build/api/dsl/ResourcesPackagingOptions
for more information