Correct the page title for TalkBack

Update the activity title so TalkBack can read correctly.

Fix: 282093840
Test: Manually with TalkBack
Test: Unit test
Change-Id: I9aa31b210a183562c52aa3617a23a1ffcca93bc2

packages/SettingsLib/Spa/spa/src/com/android/settingslib/spa/widget/scaffold/SearchScaffold.kt

@@ -73,6 +73,7 @@ fun SearchScaffold(
     actions: @Composable RowScope.() -> Unit = {},
     content: @Composable (bottomPadding: Dp, searchQuery: State<String>) -> Unit,
 ) {
+    ActivityTitle(title)
     var isSearchMode by rememberSaveable { mutableStateOf(false) }
     val viewModel: SearchScaffoldViewModel = viewModel()
 

packages/SettingsLib/Spa/spa/src/com/android/settingslib/spa/widget/scaffold/SettingsScaffold.kt

@@ -16,6 +16,9 @@
 
 package com.android.settingslib.spa.widget.scaffold
 
+import android.app.Activity
+import android.content.Context
+import android.content.ContextWrapper
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.PaddingValues
@@ -25,8 +28,10 @@ import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.Scaffold
 import androidx.compose.material3.TopAppBarDefaults
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.input.nestedscroll.nestedScroll
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.tooling.preview.Preview
 import com.android.settingslib.spa.framework.compose.horizontalValues
 import com.android.settingslib.spa.framework.compose.verticalValues
@@ -44,6 +49,7 @@ fun SettingsScaffold(
     actions: @Composable RowScope.() -> Unit = {},
     content: @Composable (PaddingValues) -> Unit,
 ) {
+    ActivityTitle(title)
     val scrollBehavior = TopAppBarDefaults.exitUntilCollapsedScrollBehavior()
     Scaffold(
         modifier = Modifier.nestedScroll(scrollBehavior.nestedScrollConnection),
@@ -55,6 +61,25 @@ fun SettingsScaffold(
     }
 }
 
+/**
+ * Sets a title for the activity.
+ *
+ * So the TalkBack can read out the correct page title.
+ */
+@Composable
+internal fun ActivityTitle(title: String) {
+    val context = LocalContext.current
+    LaunchedEffect(true) {
+        context.getActivity()?.title = title
+    }
+}
+
+private fun Context.getActivity(): Activity? = when (this) {
+    is Activity -> this
+    is ContextWrapper -> baseContext.getActivity()
+    else -> null
+}
+
 @Preview
 @Composable
 private fun SettingsScaffoldPreview() {

packages/SettingsLib/Spa/tests/src/com/android/settingslib/spa/widget/scaffold/SettingsScaffoldTest.kt

@@ -16,9 +16,12 @@
 
 package com.android.settingslib.spa.widget.scaffold
 
+import android.app.Activity
 import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.material3.Text
+import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.runtime.SideEffect
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.test.assertIsDisplayed
 import androidx.compose.ui.test.junit4.createComposeRule
 import androidx.compose.ui.test.onNodeWithText
@@ -29,12 +32,22 @@ import com.google.common.truth.Truth.assertThat
 import org.junit.Rule
 import org.junit.Test
 import org.junit.runner.RunWith
+import org.mockito.Mock
+import org.mockito.Mockito.verify
+import org.mockito.junit.MockitoJUnit
+import org.mockito.junit.MockitoRule
 
 @RunWith(AndroidJUnit4::class)
 class SettingsScaffoldTest {
     @get:Rule
     val composeTestRule = createComposeRule()
 
+    @get:Rule
+    val mockito: MockitoRule = MockitoJUnit.rule()
+
+    @Mock
+    private lateinit var activity: Activity
+
     @Test
     fun settingsScaffold_titleIsDisplayed() {
         composeTestRule.setContent {
@@ -78,7 +91,18 @@ class SettingsScaffoldTest {
         assertThat(actualPaddingValues.calculateRightPadding(LayoutDirection.Rtl)).isEqualTo(0.dp)
     }
 
+    @Test
+    fun activityTitle() {
+        composeTestRule.setContent {
+            CompositionLocalProvider(LocalContext provides activity) {
+                ActivityTitle(title = TITLE)
+            }
+        }
+
+        verify(activity).title = TITLE
+    }
+
     private companion object {
-        const val TITLE = "title"
+        const val TITLE = "Title"
     }
 }