val languages = listOf(
"en" to "English",
"vi" to "VietNam",
)
@Composable
fun LoginScreen(
navController: NavController?,
viewModel: LoginViewModel = hiltViewModel()
) {
val currentLanguageIndex = viewModel.language.observeAsState().value ?: 0
SetLanguage(currentLanguageIndex)
Scaffold() {
MainUI(navController = navController, viewModel = viewModel,index= currentLanguageIndex)
}
}
@Composable
fun SetLanguage(languageIndex: Int) {
val locale = Locale(if (languageIndex == 0) "en" else "vi")
val configuration = LocalConfiguration.current
configuration.setLocale(locale)
val resources = LocalContext.current.resources
resources.updateConfiguration(configuration, resources.displayMetrics)
}
@OptIn(ExperimentalComposeUiApi::class)
//@Preview(device = Devices.AUTOMOTIVE_1024p)
@Composable
fun MainUI(navController: NavController?, viewModel: LoginViewModel,index : Int) {
val keyboardController = LocalSoftwareKeyboardController.current
val image = painterResource(id = R.drawable.ic_login_img)
var emailValue by remember { mutableStateOf("") }
var passwordValue by remember { mutableStateOf("") }
val passwordVisibility = remember { mutableStateOf(false) }
val focusRequesterEmail = remember { FocusRequester() }
val focusRequesterPassword = remember { FocusRequester() }
val scrollState = rememberScrollState()
val checkState = remember {
mutableStateOf(true)
}
Column(
modifier = Modifier
.fillMaxWidth()
.background(color = Color.White),
horizontalAlignment = Alignment.End
) {
// DropdownDemo(viewModel = viewModel,index = index)
val scope = rememberCoroutineScope()
var expanded by remember { mutableStateOf(false) }
var selectedIndex by remember { mutableStateOf(index) }
Box(
modifier = Modifier
.width(150.dp)
.padding(top = 16.dp, end = 8.dp)
.wrapContentSize(Alignment.TopEnd)
) {
DropDownLabel(languages[selectedIndex].second, onClick = {
expanded = true
})
DropdownMenu(
expanded = expanded,
onDismissRequest = { expanded = false },
modifier = Modifier.width(150.dp)
) {
languages.forEachIndexed { index, s ->
DropdownMenuItem(
onClick = {
selectedIndex = index
expanded = false
scope.launch {
viewModel.saveLocale(index)
}
},
) {
DropDownLabel(s.second, onClick = {
selectedIndex = index
expanded = false
scope.launch {
viewModel.saveLocale(index)
}
})
}
}
}
}
Spacer(modifier = Modifier.height(20.dp))
Column(
modifier = Modifier
.fillMaxSize()
.scrollable(state = scrollState, orientation = Orientation.Vertical),
horizontalAlignment = Alignment.CenterHorizontally
) {
Box(
modifier = Modifier
.height(70.dp)
.width(140.dp),
contentAlignment = Alignment.TopCenter
) {
Image(painter = image, contentDescription = null)
}
Spacer(modifier = Modifier.height(19.dp))
Column(
modifier = Modifier
.fillMaxWidth(),
horizontalAlignment = Alignment.CenterHorizontally
) {
Text(
text = stringResource(R.string.hello),
style = MaterialTheme.typography.h4,
)
Spacer(modifier = Modifier.height(10.dp))
Text(
text = stringResource(R.string.enter_credentials_msg),
style = MaterialTheme.typography.body2,
fontSize = 14.sp
)
Spacer(modifier = Modifier.padding(10.dp))
Column(
modifier = Modifier
.fillMaxWidth(0.6f)
.padding(
start = 16.dp,
end = 16.dp
),
horizontalAlignment = Alignment.CenterHorizontally
) {
OutlinedTextField(
value = emailValue,
onValueChange = { emailValue = it },
label = { Text(text = stringResource(id = R.string.email),
style = MaterialTheme.typography.body2.copy(color = Gray1)) },
keyboardOptions = KeyboardOptions(
keyboardType = KeyboardType.Email,
imeAction = ImeAction.Next
),
placeholder = { Text(text = stringResource(id = R.string.email),
style = MaterialTheme.typography.body2.copy(color = Gray1)) },
singleLine = true,
modifier = Modifier
.fillMaxWidth()
.focusRequester(focusRequester = focusRequesterEmail),
colors = TextFieldDefaults.outlinedTextFieldColors(
unfocusedBorderColor = Gray2
),
keyboardActions = KeyboardActions(
onNext = {
CoroutineScope(Default).launch {
keyboardController?.hide()
delay(400)
focusRequesterPassword.requestFocus()
}
}
)
)
Spacer(modifier = Modifier.padding(5.dp))
OutlinedTextField(
value = passwordValue,
colors = TextFieldDefaults.outlinedTextFieldColors(
unfocusedBorderColor = Gray2
),
onValueChange = { passwordValue = it },
keyboardOptions = KeyboardOptions(
keyboardType = KeyboardType.Password,
imeAction = ImeAction.Done
),
trailingIcon = {
IconButton(onClick = {
passwordVisibility.value = !passwordVisibility.value
}) {
Icon(
painter = painterResource(id = if (passwordVisibility.value) R.drawable.ic_baseline_visibility_24 else R.drawable.ic_baseline_visibility_off_24),
contentDescription = "Visibility button",
)
}
},
label = { Text(stringResource(id = R.string.password),
style = MaterialTheme.typography.body2.copy(color = Gray1)) },
placeholder = { Text(text = stringResource(id = R.string.password),
style = MaterialTheme.typography.body2.copy(color = Gray1)) },
singleLine = true,
visualTransformation = if (passwordVisibility.value) VisualTransformation.None
else PasswordVisualTransformation(),
modifier = Modifier
.fillMaxWidth()
.focusRequester(focusRequester = focusRequesterPassword),
keyboardActions = KeyboardActions(
onDone = { keyboardController?.hide() }
),
)
Spacer(modifier = Modifier.padding(25.dp))
Row(
modifier = Modifier.fillMaxWidth()
) {
Row(
modifier = Modifier.width(intrinsicSize = IntrinsicSize.Max),
verticalAlignment = Alignment.CenterVertically
) {
Checkbox(checked = checkState.value, onCheckedChange = {
checkState.value = it
})
Text(
stringResource(id = R.string.remember_me),
maxLines = 1,
style = MaterialTheme.typography.body2.copy(color = Gray1)
)
}
Box(
contentAlignment = Alignment.CenterEnd,
modifier = Modifier.fillMaxWidth()
) {
OutlinedButton(
onClick = {
// TODO
},
border = BorderStroke(0.5.dp, BlueLight),
shape = RoundedCornerShape(8.dp)
) {
Text(
text = stringResource(id = R.string.sign_in),
fontSize = 20.sp,
style = MaterialTheme.typography.button.copy(color = BlueLight)
)
}
}
}
}
}
Box(
modifier = Modifier
.fillMaxSize()
.padding(bottom = 8.dp),
contentAlignment = Alignment.BottomCenter
) {
Text(
text = stringResource(id = R.string.skytech_software_solutions_pvt_ltd),
style = MaterialTheme.typography.caption.copy(color = Gray1),
)
}
}
}
}
@Composable
fun DropdownDemo(viewModel: LoginViewModel,index: Int) {
val scope = rememberCoroutineScope()
var expanded by remember { mutableStateOf(false) }
var selectedIndex by remember { mutableStateOf(index) }
Box(
modifier = Modifier
.width(150.dp)
.padding(top = 16.dp, end = 8.dp)
.wrapContentSize(Alignment.TopEnd)
) {
DropDownLabel(languages[selectedIndex].second, onClick = {
expanded = true
})
DropdownMenu(
expanded = expanded,
onDismissRequest = { expanded = false },
modifier = Modifier.width(150.dp)
) {
languages.forEachIndexed { index, s ->
DropdownMenuItem(
onClick = {
selectedIndex = index
expanded = false
scope.launch {
viewModel.saveLocale(index)
}
},
) {
DropDownLabel(s.second, onClick = {
selectedIndex = index
expanded = false
scope.launch {
viewModel.saveLocale(index)
}
})
}
}
}
}
}
@Composable
fun DropDownLabel(labelName: String, onClick: () -> Unit) {
Row(
modifier = Modifier
.fillMaxWidth()
.clickable(onClick = onClick)
) {
Icon(
painter = painterResource(id = R.drawable.ic_baseline_language_24),
contentDescription = "language"
)
Spacer(modifier = Modifier.width(10.dp))
Text(
labelName, modifier = Modifier
.fillMaxWidth()
)
}
}
when we change the language UI does not update some of text like sign in button and Edit text. but normal text are changing. how do we over come this situation. I have used mutable live data for the viewModel to UI. when we change language and kill the application and restart, then update all the labels.
