MainActivity.kt
package com.cfsuman.composenetwork
import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.*
import androidx.compose.material.*
import androidx.compose.runtime.*
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp
import com.cfsuman.composenetwork.ui.theme.ComposeNetworkTheme
import kotlinx.serialization.ExperimentalSerializationApi
import kotlinx.serialization.Serializable
import kotlinx.serialization.encodeToString
import kotlinx.serialization.json.Json
class MainActivity : ComponentActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContent {
ComposeNetworkTheme {
Scaffold(
topBar = {
TopAppBar(
title = {
Text("Serialization Not Encode Null Values")
}
)
},
content = { MainContent()}
)
}
}
}
}
@OptIn(ExperimentalSerializationApi::class)
@Composable
fun MainContent() {
val format = Json{
prettyPrint = true
// null values are not encoded into json
explicitNulls = false
}
val user = User(firstName = "Suman", lastName = null, age = 20)
val userString = format.encodeToString(user)
Column(Modifier.fillMaxSize().padding(24.dp)) {
Text(
text = userString,
style = MaterialTheme.typography.h5
)
}
}
@Serializable
data class User(
val firstName: String,
val lastName: String?,
val age: Int
)

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