Monday, September 20, 2021

jetpack compose - Column spacing

MainActivity.kt

package com.cfsuman.jetpackcompose

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import androidx.activity.compose.setContent
import androidx.compose.foundation.background
import androidx.compose.foundation.layout.*
import androidx.compose.foundation.rememberScrollState
import androidx.compose.foundation.verticalScroll
import androidx.compose.material.*
import androidx.compose.runtime.*
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        setContent {
            GetScaffold()
        }
    }


    @Composable
    fun GetScaffold(){
        Scaffold(
            topBar = {TopAppBar(
                title = {Text(
                    "Compose - Column Spacing",
                    color = Color.White)},
                backgroundColor = Color(0xFF333399)) },
            content = {MainContent()},
            backgroundColor = Color(0xFFEDEAE0)
        )
    }


    @Composable
    fun MainContent(){
        val scrollState = rememberScrollState()

        Column(
            modifier = Modifier
                .background(Color(0xFF9F2B68))
                .fillMaxSize()
                .padding(12.dp)
                .verticalScroll(scrollState),
            verticalArrangement = Arrangement.spacedBy(12.dp)

        ) {
            repeat(100){ counter ->
                Card(
                    backgroundColor = Color(0xFFF19CBB),
                    modifier = Modifier
                        .fillMaxWidth()
                        .height(125.dp)
                ){ Text(
                    text = "Counter: ${counter+1}",
                    modifier = Modifier.padding(12.dp)
                )
                }
            }
        }
    }


    @Preview
    @Composable
    fun ComposablePreview(){
        //GetScaffold()
    }
}