Simplify sample.

Author: bffcorreia

sample/src/main/java/dev/pinkroom/peanuts/MainActivity.kt

@@ -1,15 +1,12 @@
 package dev.pinkroom.peanuts
 
 import android.os.Bundle
-import android.util.Log
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
 import androidx.compose.foundation.layout.*
 import androidx.compose.material.*
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
-import androidx.compose.runtime.remember
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
@@ -39,41 +36,36 @@ class MainActivity : ComponentActivity() {
 @Composable
 private fun HelloWorld(viewModel: MainViewModel = viewModel()) {
     val state by viewModel.state.collectAsStateWithLifecycle()
-    Row(
-        modifier = Modifier.padding(top = 24.dp),
-        horizontalArrangement = Arrangement.Center,
-    ) {
-        if (state.showHelloWorld) Text(text = "Hello World!")
-    }
-    Column(
-        modifier = Modifier.fillMaxSize(),
-        verticalArrangement = Arrangement.Center,
-        horizontalAlignment = Alignment.CenterHorizontally,
-    ) {
-        Button(onClick = viewModel::onShowButtonClicked) {
-            Text(text = "Show")
-        }
-        Button(onClick = viewModel::onHideButtonClicked) {
-            Text(text = "Hide")
+    if (state.isLoading) {
+        LoadingView()
+    } else {
+        Row(
+            modifier = Modifier.padding(top = 24.dp),
+            horizontalArrangement = Arrangement.Center,
+        ) {
+            if (state.showHelloWorld) Text(text = "Hello World!")
         }
-        Button(onClick = viewModel::onShowMessageClicked) {
-            Text(text = "Show Message")
+        Column(
+            modifier = Modifier.fillMaxSize(),
+            verticalArrangement = Arrangement.Center,
+            horizontalAlignment = Alignment.CenterHorizontally,
+        ) {
+            Button(onClick = viewModel::onShowButtonClicked) {
+                Text(text = "Show")
+            }
+            Button(onClick = viewModel::onHideButtonClicked) {
+                Text(text = "Hide")
+            }
+            Button(onClick = viewModel::onLoadingClicked) {
+                Text(text = "Loading")
+            }
         }
     }
-    SnackBar(message = state.message)
 }
 
 @Composable
-private fun SnackBar(message: Message?) {
-    Log.i("CENAS", "CENAS: $message")
-    val snackbarHostState = remember { SnackbarHostState() }
-    LaunchedEffect(message) {
-        message?.let { snackbarHostState.showSnackbar(it.text) }
-    }
-    Box(modifier = Modifier.fillMaxSize()) {
-        SnackbarHost(
-            hostState = snackbarHostState,
-            modifier = Modifier.align(Alignment.BottomCenter),
-        )
-    }
-}
+private fun LoadingView() = Column(
+    modifier = Modifier.fillMaxSize(),
+    verticalArrangement = Arrangement.Center,
+    horizontalAlignment = Alignment.CenterHorizontally
+) { CircularProgressIndicator() }

sample/src/main/java/dev/pinkroom/peanuts/MainState.kt

@@ -2,6 +2,6 @@ package dev.pinkroom.peanuts
 
 @PeanutState
 data class MainState(
+    val isLoading: Boolean = false,
     val showHelloWorld: Boolean = false,
-    val message: Message? = null,
 )

sample/src/main/java/dev/pinkroom/peanuts/MainViewModel.kt

@@ -1,8 +1,11 @@
 package dev.pinkroom.peanuts
 
 import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.launch
 
 class MainViewModel : ViewModel() {
 
@@ -17,7 +20,9 @@ class MainViewModel : ViewModel() {
         _state.update(showHelloWorld = false)
     }
 
-    fun onShowMessageClicked() {
-        _state.update(message = Message("Hello!"))
+    fun onLoadingClicked() = viewModelScope.launch {
+        _state.update(isLoading = true)
+        delay(1000)
+        _state.update(isLoading = false)
     }
 }