Android Day 12 Clean Our Project and make a Translation App Demo

Today we are going to do a complete overhaul of our project and make a mock translation app:

package com.williamjiamin.ourowncomposable

import android.os.Bundle
import android.widget.Toast
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.ui.Alignment
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.width
import androidx.compose.foundation.text.BasicTextField
import androidx.compose.foundation.text.KeyboardOptions
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.ArrowForward
import androidx.compose.material3.Button
import androidx.compose.material3.ButtonDefaults
import androidx.compose.material3.Icon
import androidx.compose.material3.MaterialTheme
import androidx.compose.material3.OutlinedTextField
import androidx.compose.material3.Surface
import androidx.compose.material3.Text
import androidx.compose.material3.TextField
import androidx.compose.runtime.Composable
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.setValue
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.text.TextStyle
import androidx.compose.ui.text.input.KeyboardType
import androidx.compose.ui.tooling.preview.Preview
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp
import com.williamjiamin.ourowncomposable.ui.theme.OurOwnComposableTheme

class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            OurOwnComposableTheme {
                // A surface container using the 'background' color from the theme
                Surface(
                    modifier = Modifier.fillMaxSize(),
                    color = MaterialTheme.colorScheme.background
                ) {
                    StackOfGreetings()
                }
            }
        }
    }
}

@Composable
fun StackOfGreetings() {

    Column (
        modifier = Modifier.fillMaxSize(),
        horizontalAlignment = Alignment.CenterHorizontally
    )
    {
        UserInputField()
    }

}

@Composable
fun UserInputField() {

    Column(
        modifier = Modifier.fillMaxSize(),
        horizontalAlignment = Alignment.CenterHorizontally
    ) {
        Text("Please Enter the Text You need to Translate:")

        OutlinedTextField(value = "My name is William!", onValueChange = {

        })

        val context = LocalContext.current

        Row(
            modifier = Modifier,
            horizontalArrangement = Arrangement.Center,
            verticalAlignment = Alignment.CenterVertically
        ) {
            Button(
                onClick = { Toast
                    .makeText(context,
                        "You have subscribed to William Jiamin channel!",
                        Toast.LENGTH_LONG).show() },
                colors = ButtonDefaults.buttonColors(
                    containerColor = Color.LightGray,
                    contentColor = Color.Black
                )
            ) {
                Text("Original")
            }

            // Spacer(modifier = Modifier.width(16.dp))

            Icon(
                imageVector = Icons.Filled.ArrowForward,
                contentDescription = "Arrow Forward",
                modifier = Modifier.width(16.dp)
            )

            Button(
                onClick = { Toast
                    .makeText(context,
                        "You have subscribed to William Jiamin channel!",
                        Toast.LENGTH_LONG).show() },
                colors = ButtonDefaults.buttonColors(
                    containerColor = Color.LightGray,
                    contentColor = Color.Black
                )
            ) {
                Text("Translated")
            }
        }

        OutlinedTextField(value = "私は　William　Jiaminです！", onValueChange = {

        })
    }
}

@Preview(showBackground = true)
@Composable
fun StackOfGreetingsPreview() {
    OurOwnComposableTheme {
    StackOfGreetings()
    }
}

I add Spacer or Icon to separate two buttons:

            // Spacer(modifier = Modifier.width(16.dp))

            Icon(
                imageVector = Icons.Filled.ArrowForward,
                contentDescription = "Arrow Forward",
                modifier = Modifier.width(16.dp)

And use modifier to rearrange the alignment:

        Row(
            modifier = Modifier,
            horizontalArrangement = Arrangement.Center,
            verticalAlignment = Alignment.CenterVertically
        ) 

After that , you will see something like this :