我想要将实心或渐变颜色应用于Jetpack Compose Snackbar。请指导我如何更改颜色。
这是我的Material3 Compose Snackbar,我正在寻找更改背景颜色的解决方案。
import android.os.Bundle
import android.widget.Toast
import androidx.activity.ComponentActivity
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.icons.Icons
import androidx.compose.material.icons.filled.ArrowBack
import androidx.compose.material3.*
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.res.painterResource
import androidx.compose.ui.unit.dp
import compose.material.theme.ui.theme.Material3ComposeTheme
import compose.material.theme.ui.theme.Purple40
import kotlinx.coroutines.launch
class MainActivity : ComponentActivity() {
@OptIn(ExperimentalMaterial3Api::class)
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContent {
Material3ComposeTheme {
val context = LocalContext.current
val snackState = remember { SnackbarHostState() }
val scope = rememberCoroutineScope()
Scaffold(
topBar = {
},
content = {
fun launchSnackbar(message: String, actionLabel : String?=null, duration: SnackbarDuration = SnackbarDuration.Short){
scope.launch {
snackState.showSnackbar(message = message,actionLabel=actionLabel, duration=duration)
}
}
Column(
modifier = Modifier
.padding(it)
.verticalScroll(rememberScrollState())
) {
Spacer(modifier = Modifier.height(47.dp))
Text("Snackbar", Modifier.padding(bottom = 10.dp), style = MaterialTheme.typography.labelLarge)
Button(onClick = {
// * Snackbar
launchSnackbar(message = "Hi i am snackbar message", actionLabel = "Hide", duration = SnackbarDuration.Long)
}) { Text("Snackbar",style = MaterialTheme.typography.labelLarge) }
ListDividerPadding()
Text("Toast", Modifier.padding(bottom = 10.dp), style = MaterialTheme.typography.labelLarge)
Button(onClick = {
Toast.makeText(
context,
"Hi i am toast message",
Toast.LENGTH_LONG
).show()
}) { Text("Toast",style = MaterialTheme.typography.labelLarge) }
}
}
)
Box(modifier = Modifier.fillMaxSize(), Alignment.BottomCenter){
SnackbarHost(hostState = snackState)
}
}
}
}
}