I have an issue with my android app. I'm fairly new with it and have some issues with finding the correct documentation for a asynchronous. I'm using the kohttp library to help me a bit.
The thing is, you can't run this on the main UI thread so I want to make this request Async. I can't find a clear reference in the documentation and I don't really know how to do this in plain Kotlin.
This is what I come up with; in a separate class named LoginCall. I tried other answers, this however didn't result in success. How can I run this on a new thread and still use the response?
class LoginCall {
fun callLoginRequest(a:String, b:String): Any {
val response: Response = httpPost {
host = "XXX"
path = "XXX"
param { }
header { }
body {
form {
"email" to a
"password" to b
}
}
}
return response
}
}
There are many ways to achieve this, if you're using android as the underlying platform, you can use the native component called AsyncTask a good SO post on how to use it.
If you wish to leverage kotlin as a language and the features provided by it, you can try using coroutines ref.
Personally, i would recommend coroutines, it simplifies exception and error handling, also prevents callback hell.
here's a sample of the same code in a coroutine,
// global
private val mainScope = CoroutineScope(Dispatchers.MAIN + SupervisorJob())
// inside a method
mainScope.launch{
withContext(Dispatchers.IO){
// do your async task here, as you can see, you're doing this in an IO thread scope.
}
}
Since kohttp 0.10.0 you can use async methods for such cases. You can try them.
Code example:
suspend fun callLoginRequest(a:String, b:String): Any {
val response: Differed<Response> = httpPostAsync {
host = "XXX"
path = "XXX"
param { }
header { }
body {
form {
"email" to a
"password" to b
}
}
}
// for further usage in coroutines
return response.await()
}
And call this function from coroutine