List In JetPack Compose

listjetpack

MainActivity.kt:
import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.Image
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.material.MaterialTheme
import androidx.compose.material.Surface
import androidx.compose.material.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.res.painterResource
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import com.example.newtest.ui.theme.NewTestTheme

class MainActivity : ComponentActivity() {

    private var dataList = ArrayList<String>()

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        init()
        setContent {
            NewTestTheme() {
                Surface(
                    modifier = Modifier.fillMaxSize(),
                    color = MaterialTheme.colors.background
                ) {
                    listView()
                }
            }
        }
    }

    @Preview(showBackground = true)
    @Composable
    fun listView(){
        LazyColumn{
            items(dataList.size){index ->
                Text(text = dataList[index])
                Spacer(modifier = Modifier.size(3.dp))
            }
        }
    }

    private fun init(){
        dataList.add("BMW E46")
        dataList.add("Honda")
        dataList.add("Benz")
        dataList.add("Lambo")
        dataList.add("BMW X6")
        dataList.add("BMW X4")
    }
}