[Android Studio] MLKit를 이용하여 번역 할 수 있는 앱 만들기

@OptIn(ExperimentalMaterial3Api::class)
class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            TranslationTheme {
                // A surface container using the 'background' color from the theme
                Surface(
                    modifier = Modifier.fillMaxSize(),
                    color = MaterialTheme.colorScheme.background
                ) {
                    val enKoTranslator = remember {
                        val options = TranslatorOptions.Builder()
                            .setSourceLanguage(TranslateLanguage.ENGLISH)
                            .setTargetLanguage(TranslateLanguage.KOREAN)
                            .build()
                        Translation.getClient(options)
                    }
                    var enabled by remember {
                        mutableStateOf(false)
                    }
                    LaunchedEffect(Unit) {
                        val conditions = DownloadConditions.Builder()
                            .requireWifi()
                            .build()
                        enKoTranslator.downloadModelIfNeeded(conditions)
                            .addOnSuccessListener {
                                enabled = true
                            }
                            .addOnFailureListener { exception ->
                            }
                    }
                    var textEn by remember { mutableStateOf("") }
                    var textTranslated by remember { mutableStateOf("") }

                    Column(horizontalAlignment = Alignment.CenterHorizontally) {
                        Text(
                            text = "퀄리티 높은 무료 번역",
                            fontWeight = FontWeight.Bold,
                            fontSize = 20.sp,
                            modifier = Modifier
                                .padding(20.dp)
                                .align(Alignment.CenterHorizontally)
                        )
                        Box(
                            modifier = Modifier
                                .background(color = Color.LightGray)
                                .fillMaxWidth()
                        )
                        TextField(
                            value = textEn,
                            onValueChange = { textEn = it },
                            label = { Text(text = "번역할 내용을 입력하세요.") },
                            placeholder = { Text(text = "") },
                            maxLines = 10,
                            textStyle = TextStyle(color = Color.Black),
                            modifier = Modifier
                                .padding(30.dp)
                                .height(180.dp)
                                .fillMaxWidth()
                        )

                        Spacer(
                            modifier = Modifier
                                .size(20.dp)
                        )
                        Button(
                            onClick = {
                                enKoTranslator.translate(textEn)
                                    .addOnSuccessListener { translatedText ->
                                        textTranslated = translatedText
                                    }
                                    .addOnFailureListener { exception ->
                                    }
                            },
                            enabled = enabled,
                            colors = ButtonDefaults.buttonColors(
                                containerColor = Color(0xff4B5F93),
                                contentColor = Color.White
                            ),
                        ) {
                            Text(text = "Translate")
                        }
                        Spacer(
                            modifier = Modifier
                                .size(30.dp)
                        )
                        Box(
                            modifier = Modifier
                                .background(color = Color(0xffE1E2EC))
                                .width(320.dp)
                                .height(250.dp)
                                .padding(5.dp)
                        ) {
                            Column {
                                Text(text = "번역 결과", color = Color.Gray, fontSize = 15.sp)
                                Text(text = "$textTranslated")

                            }
                        }
                        Spacer(
                            modifier = Modifier
                                .padding(10.dp)
                        )
                        Image(
                            painter = painterResource(id = R.drawable.ad),
                            contentDescription = null
                        )
                    }
                }
            }
        }
    }
}

퀄리티 높은 무료 번역 앱이지만 사실 완전 저퀄리티지롱