Handle when API it not available (#2027)

google · Feb 7, 2024 · 4042bc4 · 4042bc4
1 parent 6af6af6
commit 4042bc4
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Showing 2 changed files with 35 additions and 1 deletion.
diff --git a/...e/android/horologist/datalayer/sample/screens/inappprompts/InstallAppPromptDemo2Screen.kt b/...e/android/horologist/datalayer/sample/screens/inappprompts/InstallAppPromptDemo2Screen.kt
@@ -45,6 +45,12 @@ fun InstallAppPromptDemo2Screen(
 ) {
     val state by viewModel.uiState.collectAsStateWithLifecycle()
 
+    if (state == InstallAppPromptDemo2ScreenState.Idle) {
+        SideEffect {
+            viewModel.initialize()
+        }
+    }
+
     val context = LocalContext.current
 
     InstallAppPromptDemo2Screen(
@@ -97,12 +103,15 @@ fun InstallAppPromptDemo2Screen(
             modifier = Modifier
                 .padding(top = 10.dp)
                 .align(Alignment.CenterHorizontally),
+            enabled = state != InstallAppPromptDemo2ScreenState.ApiNotAvailable,
         ) {
             Text(text = stringResource(id = R.string.install_app_prompt_run_demo2_button_label))
         }
 
         when (state) {
-            InstallAppPromptDemo2ScreenState.Idle -> {
+            InstallAppPromptDemo2ScreenState.Idle,
+            InstallAppPromptDemo2ScreenState.Loaded,
+            -> {
                 /* do nothing */
             }
 
@@ -142,6 +151,10 @@ fun InstallAppPromptDemo2Screen(
                     ),
                 )
             }
+
+            InstallAppPromptDemo2ScreenState.ApiNotAvailable -> {
+                Text(stringResource(id = R.string.wearable_message_api_unavailable))
+            }
         }
     }
 }

diff --git a/...ndroid/horologist/datalayer/sample/screens/inappprompts/InstallAppPromptDemo2ViewModel.kt b/...ndroid/horologist/datalayer/sample/screens/inappprompts/InstallAppPromptDemo2ViewModel.kt
@@ -16,6 +16,7 @@
 
 package com.google.android.horologist.datalayer.sample.screens.inappprompts
 
+import androidx.annotation.MainThread
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import com.google.android.horologist.data.apphelper.appInstalled
@@ -35,10 +36,28 @@ class InstallAppPromptDemo2ViewModel
         val phoneUiDataLayerHelper: PhoneUiDataLayerHelper,
     ) : ViewModel() {
 
+        private var initializeCalled = false
+
         private val _uiState =
             MutableStateFlow<InstallAppPromptDemo2ScreenState>(InstallAppPromptDemo2ScreenState.Idle)
         public val uiState: StateFlow<InstallAppPromptDemo2ScreenState> = _uiState
 
+        @MainThread
+        fun initialize() {
+            if (initializeCalled) return
+            initializeCalled = true
+
+            _uiState.value = InstallAppPromptDemo2ScreenState.Loading
+
+            viewModelScope.launch {
+                if (!phoneDataLayerAppHelper.isAvailable()) {
+                    _uiState.value = InstallAppPromptDemo2ScreenState.ApiNotAvailable
+                } else {
+                    _uiState.value = InstallAppPromptDemo2ScreenState.Loaded
+                }
+            }
+        }
+
         fun onRunDemoClick() {
             _uiState.value = InstallAppPromptDemo2ScreenState.Loading
 
@@ -69,8 +88,10 @@ class InstallAppPromptDemo2ViewModel
 sealed class InstallAppPromptDemo2ScreenState {
     data object Idle : InstallAppPromptDemo2ScreenState()
     data object Loading : InstallAppPromptDemo2ScreenState()
+    data object Loaded : InstallAppPromptDemo2ScreenState()
     data class WatchFound(val watchName: String) : InstallAppPromptDemo2ScreenState()
     data object WatchNotFound : InstallAppPromptDemo2ScreenState()
     data object InstallPromptInstallClicked : InstallAppPromptDemo2ScreenState()
     data object InstallPromptInstallCancelled : InstallAppPromptDemo2ScreenState()
+    data object ApiNotAvailable : InstallAppPromptDemo2ScreenState()
 }