Fix Part of #4938: Language Selection Config and New Profile Creation Flow

app/src/main/AndroidManifest.xml

@@ -348,6 +348,9 @@
       android:name=".app.onboarding.IntroActivity"
       android:label="@string/onboarding_learner_intro_activity_title"
       android:theme="@style/OppiaThemeWithoutActionBar" />
+    <activity
+      android:name=".app.testing.TextInputLayoutBindingAdaptersTestActivity"
+      android:theme="@style/OppiaThemeWithoutActionBar" />
     <provider
       android:name="androidx.work.impl.WorkManagerInitializer"
       android:authorities="${applicationId}.workmanager-init"

app/src/main/java/org/oppia/android/app/databinding/TextInputLayoutBindingAdapters.java

@@ -1,8 +1,17 @@
 package org.oppia.android.app.databinding;
 
+import android.app.Activity;
+import android.content.Context;
+import android.content.ContextWrapper;
+import android.view.View;
+import android.widget.AutoCompleteTextView;
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.databinding.BindingAdapter;
 import com.google.android.material.textfield.TextInputLayout;
+import org.oppia.android.app.model.OppiaLanguage;
+import org.oppia.android.app.translation.AppLanguageActivityInjectorProvider;
+import org.oppia.android.app.translation.AppLanguageResourceHandler;
 
 /** Holds all custom binding adapters that bind to [TextInputLayout]. */
 public final class TextInputLayoutBindingAdapters {
@@ -15,4 +24,37 @@ public static void setErrorMessage(
   ) {
     textInputLayout.setError(errorMessage);
   }
+
+  /** Binding adapter for setting the text of an [AutoCompleteTextView]. */
+  @BindingAdapter({"languageSelection", "filter"})
+  public static void setLanguageSelection(
+      @NonNull AutoCompleteTextView textView,
+      @Nullable OppiaLanguage selectedItem,
+      Boolean filter) {
+    textView.setText(getAppLanguageResourceHandler(textView)
+        .computeLocalizedDisplayName(selectedItem), filter);
+  }
+
+  private static AppLanguageResourceHandler getAppLanguageResourceHandler(View view) {
+    AppLanguageActivityInjectorProvider provider =
+        (AppLanguageActivityInjectorProvider) getAttachedActivity(view);
+    return provider.getAppLanguageActivityInjector().getAppLanguageResourceHandler();
+  }
+
+  private static Activity getAttachedActivity(View view) {
+    Context context = view.getContext();
+    while (context != null && !(context instanceof Activity)) {
+      if (!(context instanceof ContextWrapper)) {
+        throw new IllegalStateException(
+            "Encountered context in view (" + view + ") that doesn't wrap a parent context: "
+                + context
+        );
+      }
+      context = ((ContextWrapper) context).getBaseContext();
+    }
+    if (context == null) {
+      throw new IllegalStateException("Failed to find base Activity for view: " + view);
+    }
+    return (Activity) context;
+  }
 }

app/src/main/java/org/oppia/android/app/onboarding/AudioLanguageFragmentPresenter.kt

@@ -1,37 +1,55 @@
 package org.oppia.android.app.onboarding
 
+import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.view.inputmethod.EditorInfo
+import android.widget.AdapterView
 import android.widget.ArrayAdapter
 import androidx.appcompat.app.AppCompatActivity
 import androidx.fragment.app.Fragment
 import com.google.android.material.appbar.AppBarLayout
 import org.oppia.android.R
+import org.oppia.android.app.home.HomeActivity
+import org.oppia.android.app.model.AudioLanguageFragmentStateBundle
+import org.oppia.android.app.model.AudioTranslationLanguageSelection
+import org.oppia.android.app.model.OppiaLanguage
+import org.oppia.android.app.model.ProfileId
+import org.oppia.android.app.options.AudioLanguageFragment.Companion.FRAGMENT_SAVED_STATE_KEY
 import org.oppia.android.app.options.AudioLanguageSelectionViewModel
 import org.oppia.android.app.translation.AppLanguageResourceHandler
 import org.oppia.android.databinding.AudioLanguageSelectionFragmentBinding
+import org.oppia.android.domain.oppialogger.OppiaLogger
+import org.oppia.android.domain.translation.TranslationController
+import org.oppia.android.util.data.AsyncResult
+import org.oppia.android.util.data.DataProviders.Companion.toLiveData
+import org.oppia.android.util.extensions.getProto
+import org.oppia.android.util.extensions.putProto
 import javax.inject.Inject
 
 /** The presenter for [AudioLanguageFragment]. */
 class AudioLanguageFragmentPresenter @Inject constructor(
   private val fragment: Fragment,
   private val activity: AppCompatActivity,
   private val appLanguageResourceHandler: AppLanguageResourceHandler,
-  private val audioLanguageSelectionViewModel: AudioLanguageSelectionViewModel
+  private val audioLanguageSelectionViewModel: AudioLanguageSelectionViewModel,
+  private val translationController: TranslationController,
+  private val oppiaLogger: OppiaLogger
 ) {
   private lateinit var binding: AudioLanguageSelectionFragmentBinding
+  private lateinit var selectedLanguage: OppiaLanguage
 
   /**
    * Returns a newly inflated view to render the fragment with an evaluated audio language as the
    * initial selected language, based on current locale.
    */
   fun handleCreateView(
     inflater: LayoutInflater,
-    container: ViewGroup?
+    container: ViewGroup?,
+    profileId: ProfileId,
+    outState: Bundle?
   ): View {
-
     // Hide toolbar as it's not needed in this layout. The toolbar is created by a shared activity
     // and is required in OptionsFragment.
     activity.findViewById<AppBarLayout>(R.id.reading_list_app_bar_layout).visibility = View.GONE
@@ -41,33 +59,110 @@ class AudioLanguageFragmentPresenter @Inject constructor(
       container,
       /* attachToRoot= */ false
     )
-    binding.lifecycleOwner = fragment
+
+    val savedSelectedLanguage = outState?.getProto(
+      FRAGMENT_SAVED_STATE_KEY,
+      AudioLanguageFragmentStateBundle.getDefaultInstance()
+    )?.selectedLanguage
+
+    binding.apply {
+      lifecycleOwner = fragment
+      viewModel = audioLanguageSelectionViewModel
+    }
+
+    audioLanguageSelectionViewModel.updateProfileId(profileId)
+
+    savedSelectedLanguage?.let {
+      if (it != OppiaLanguage.LANGUAGE_UNSPECIFIED) {
+        setSelectedLanguage(it)
+      } else {
+        observePreselectedLanguage()
+      }
+    } ?: observePreselectedLanguage()
 
     binding.audioLanguageText.text = appLanguageResourceHandler.getStringInLocaleWithWrapping(
       R.string.audio_language_fragment_text,
       appLanguageResourceHandler.getStringInLocale(R.string.app_name)
     )
 
-    binding.onboardingNavigationBack.setOnClickListener {
-      activity.finish()
-    }
+    binding.onboardingNavigationBack.setOnClickListener { activity.finish() }
 
-    val adapter = ArrayAdapter(
-      fragment.requireContext(),
-      R.layout.onboarding_language_dropdown_item,
-      R.id.onboarding_language_text_view,
-      audioLanguageSelectionViewModel.availableAudioLanguages
+    audioLanguageSelectionViewModel.supportedOppiaLanguagesLiveData.observe(
+      fragment,
+      { languages ->
+        val adapter = ArrayAdapter(
+          fragment.requireContext(),
+          R.layout.onboarding_language_dropdown_item,
+          R.id.onboarding_language_text_view,
+          languages.map { appLanguageResourceHandler.computeLocalizedDisplayName(it) }
+        )
+        binding.audioLanguageDropdownList.setAdapter(adapter)
+      }
     )
 
     binding.audioLanguageDropdownList.apply {
-      setAdapter(adapter)
-      setText(
-        audioLanguageSelectionViewModel.defaultLanguageSelection,
-        false
-      )
       setRawInputType(EditorInfo.TYPE_NULL)
+
+      onItemClickListener =
+        AdapterView.OnItemClickListener { _, _, position, _ ->
+          val selectedItem = adapter.getItem(position) as? String
+          selectedItem?.let {
+            val localizedNameMap = OppiaLanguage.values().associateBy { oppiaLanguage ->
+              appLanguageResourceHandler.computeLocalizedDisplayName(oppiaLanguage)
+            }
+            selectedLanguage = localizedNameMap[it] ?: OppiaLanguage.ENGLISH
+          }
+        }
+    }
+
+    binding.onboardingNavigationContinue.setOnClickListener {
+      updateSelectedAudioLanguage(selectedLanguage, profileId).also {
+        val intent = HomeActivity.createHomeActivity(fragment.requireContext(), profileId)
+        fragment.startActivity(intent)
+        // Finish this activity as well as all activities immediately below it in the current
+        // task so that the user cannot navigate back to the onboarding flow by pressing the
+        // back button once onboarding is complete
+        fragment.activity?.finishAffinity()
+      }
     }
 
     return binding.root
   }
+
+  private fun observePreselectedLanguage() {
+    audioLanguageSelectionViewModel.languagePreselectionLiveData.observe(
+      fragment,
+      { selectedLanguage -> setSelectedLanguage(selectedLanguage) }
+    )
+  }
+
+  private fun setSelectedLanguage(selectedLanguage: OppiaLanguage) {
+    this.selectedLanguage = selectedLanguage
+    audioLanguageSelectionViewModel.selectedAudioLanguage.set(selectedLanguage)
+  }
+
+  private fun updateSelectedAudioLanguage(selectedLanguage: OppiaLanguage, profileId: ProfileId) {
+    val audioLanguageSelection =
+      AudioTranslationLanguageSelection.newBuilder().setSelectedLanguage(selectedLanguage).build()
+    translationController.updateAudioTranslationContentLanguage(profileId, audioLanguageSelection)
+      .toLiveData().observe(fragment) {
+        when (it) {
+          is AsyncResult.Failure ->
+            oppiaLogger.e(
+              "AudioLanguageFragment",
+              "Failed to set the selected language.",
+              it.error
+            )
+          else -> {} // Do nothing.
+        }
+      }
+  }
+
+  /** Save the current dropdown selection to be retrieved on configuration change. */
+  fun handleSavedState(outState: Bundle) {
+    outState.putProto(
+      FRAGMENT_SAVED_STATE_KEY,
+      AudioLanguageFragmentStateBundle.newBuilder().setSelectedLanguage(selectedLanguage).build()
+    )
+  }
 }

app/src/main/java/org/oppia/android/app/onboarding/CreateProfileActivity.kt

@@ -5,8 +5,11 @@ import android.content.Intent
 import android.os.Bundle
 import org.oppia.android.app.activity.ActivityComponentImpl
 import org.oppia.android.app.activity.InjectableAutoLocalizedAppCompatActivity
+import org.oppia.android.app.model.CreateProfileActivityParams
 import org.oppia.android.app.model.ScreenName.CREATE_PROFILE_ACTIVITY
+import org.oppia.android.util.extensions.getProtoExtra
 import org.oppia.android.util.logging.CurrentAppScreenNameIntentDecorator.decorateWithScreenName
+import org.oppia.android.util.profile.CurrentUserProfileIdIntentDecorator.extractCurrentUserProfileId
 import javax.inject.Inject
 
 /** Activity for displaying a new learner profile creation flow. */
@@ -18,7 +21,13 @@ class CreateProfileActivity : InjectableAutoLocalizedAppCompatActivity() {
     super.onCreate(savedInstanceState)
     (activityComponent as ActivityComponentImpl).inject(this)
 
-    learnerProfileActivityPresenter.handleOnCreate()
+    val profileId = intent.extractCurrentUserProfileId()
+    val profileType = intent.getProtoExtra(
+      CREATE_PROFILE_PARAMS_KEY,
+      CreateProfileActivityParams.getDefaultInstance()
+    ).profileType
+
+    learnerProfileActivityPresenter.handleOnCreate(profileId, profileType)
   }
 
   companion object {

app/src/main/java/org/oppia/android/app/onboarding/CreateProfileActivityPresenter.kt

@@ -1,11 +1,20 @@
 package org.oppia.android.app.onboarding
 
+import android.os.Bundle
 import androidx.appcompat.app.AppCompatActivity
 import androidx.databinding.DataBindingUtil
 import org.oppia.android.R
+import org.oppia.android.app.model.CreateProfileFragmentArguments
+import org.oppia.android.app.model.ProfileId
+import org.oppia.android.app.model.ProfileType
 import org.oppia.android.databinding.CreateProfileActivityBinding
+import org.oppia.android.util.extensions.putProto
+import org.oppia.android.util.profile.CurrentUserProfileIdIntentDecorator.decorateWithUserProfileId
 import javax.inject.Inject
 
+/** Argument key for [CreateProfileFragment] arguments. */
+const val CREATE_PROFILE_FRAGMENT_ARGS = "CreateProfileFragment.args"
+
 private const val TAG_CREATE_PROFILE_ACTIVITY_FRAGMENT = "TAG_CREATE_PROFILE_ACTIVITY_FRAGMENT"
 
 /** Presenter for [CreateProfileActivity]. */
@@ -15,14 +24,24 @@ class CreateProfileActivityPresenter @Inject constructor(
   private lateinit var binding: CreateProfileActivityBinding
 
   /** Handle creation and binding of the CreateProfileActivity layout. */
-  fun handleOnCreate() {
+  fun handleOnCreate(profileId: ProfileId, profileType: ProfileType) {
     binding = DataBindingUtil.setContentView(activity, R.layout.create_profile_activity)
     binding.apply {
       lifecycleOwner = activity
     }
 
     if (getNewLearnerProfileFragment() == null) {
       val createLearnerProfileFragment = CreateProfileFragment()
+
+      val args = Bundle().apply {
+        val fragmentArgs =
+          CreateProfileFragmentArguments.newBuilder().setProfileType(profileType).build()
+        putProto(CREATE_PROFILE_FRAGMENT_ARGS, fragmentArgs)
+        decorateWithUserProfileId(profileId)
+      }
+
+      createLearnerProfileFragment.arguments = args
+
       activity.supportFragmentManager.beginTransaction().add(
         R.id.profile_fragment_placeholder,
         createLearnerProfileFragment,

app/src/main/java/org/oppia/android/app/onboarding/CreateProfileFragment.kt

@@ -9,6 +9,9 @@ import android.view.ViewGroup
 import androidx.activity.result.contract.ActivityResultContracts
 import org.oppia.android.app.fragment.FragmentComponentImpl
 import org.oppia.android.app.fragment.InjectableFragment
+import org.oppia.android.app.model.CreateProfileFragmentArguments
+import org.oppia.android.util.extensions.getProto
+import org.oppia.android.util.profile.CurrentUserProfileIdIntentDecorator.extractCurrentUserProfileId
 import javax.inject.Inject
 
 /** Fragment for displaying a new learner profile creation flow. */
@@ -33,6 +36,23 @@ class CreateProfileFragment : InjectableFragment() {
         createProfileFragmentPresenter.handleOnActivityResult(result.data)
       }
     }
-    return createProfileFragmentPresenter.handleCreateView(inflater, container)
+
+    val profileId = checkNotNull(arguments?.extractCurrentUserProfileId()) {
+      "Expected CreateProfileFragment to have a profileId argument."
+    }
+    val profileType = checkNotNull(
+      arguments?.getProto(
+        CREATE_PROFILE_FRAGMENT_ARGS, CreateProfileFragmentArguments.getDefaultInstance()
+      )?.profileType
+    ) {
+      "Expected CreateProfileFragment to have a profileType argument."
+    }
+
+    return createProfileFragmentPresenter.handleCreateView(
+      inflater,
+      container,
+      profileId,
+      profileType
+    )
   }
 }