Merge pull request #400 from android/fm/m3_withlifecycle

[Theming][End] Using collectAsStateWithLifecycle

Author: florina-muntenescu

ThemingCodelab/app/build.gradle

@@ -21,7 +21,7 @@ plugins {
 
 android {
     namespace "com.example.reply"
-    compileSdkVersion 34
+    compileSdk 34
     defaultConfig {
         applicationId 'com.example.reply'
         minSdkVersion 21
@@ -117,6 +117,7 @@ dependencies {
     implementation 'androidx.core:core-ktx:1.12.0'
     implementation "androidx.activity:activity-compose:1.8.1"
 
+    implementation "androidx.lifecycle:lifecycle-runtime-compose:2.6.2"
     implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:2.6.2"
     implementation "androidx.lifecycle:lifecycle-viewmodel-savedstate:2.6.2"
     implementation "androidx.lifecycle:lifecycle-livedata-ktx:2.6.2"

ThemingCodelab/app/src/main/java/com/example/reply/ui/MainActivity.kt

@@ -27,6 +27,7 @@ import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import com.example.reply.data.LocalEmailsDataProvider
 import com.example.reply.ui.theme.AppTheme
 
@@ -38,7 +39,7 @@ class MainActivity : ComponentActivity() {
 
         setContent {
 
-            val uiState by viewModel.uiState.collectAsState()
+            val uiState by viewModel.uiState.collectAsStateWithLifecycle()
 
             AppTheme {
                 Surface(tonalElevation = 5.dp) {