Scroll to top when opening more settings page

Test: local tested
Flag: EXEMPT minor fix
Bug: 343317785
Change-Id: I5e90e4b1b3bcd5329c6574655ad6a3dee537438c

src/com/android/settings/bluetooth/ui/view/DeviceDetailsFragmentFormatter.kt

@@ -26,9 +26,13 @@ import android.os.Bundle
 import androidx.compose.animation.AnimatedVisibility
 import androidx.compose.animation.fadeIn
 import androidx.compose.animation.fadeOut
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.height
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.remember
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
 import androidx.core.graphics.drawable.toDrawable
 import androidx.lifecycle.ViewModelProvider
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
@@ -227,6 +231,7 @@ class DeviceDetailsFragmentFormatterImpl(
 
         dashboardFragment.lifecycleScope.launch {
             if (isLoading) {
+                scrollToTop()
                 dashboardFragment.setLoading(false, false)
                 isLoading = false
             }
@@ -493,6 +498,19 @@ class DeviceDetailsFragmentFormatterImpl(
         }
     }
 
+    private fun scrollToTop() {
+        // Temporary fix to make sure the screen is scroll to the top when rendering.
+        ComposePreference(context).apply {
+            order = -1
+            isEnabled = false
+            isSelectable = false
+            setContent { Spacer(modifier = Modifier.height(1.dp)) }
+        }.also {
+            dashboardFragment.preferenceScreen.addPreference(it)
+            dashboardFragment.scrollToPreference(it)
+        }
+    }
+
     private fun getPreferenceKey(settingId: Int) = "DEVICE_SETTING_${settingId}"
 
     private class SpotlightPreference(context: Context) : Preference(context) {

tests/robotests/src/com/android/settings/bluetooth/ui/view/DeviceDetailsFragmentFormatterTest.kt

@@ -404,7 +404,7 @@ class DeviceDetailsFragmentFormatterTest {
         for (i in 0..<fragment.preferenceScreen.preferenceCount) {
             prefs.add(fragment.preferenceScreen.getPreference(i))
         }
-        return prefs
+        return prefs.filter { it.key != null }
     }
 
     class TestFragment(context: Context) : DashboardFragment() {