Fix part of #42: Exploration player base (Part 1) #42

app/src/main/AndroidManifest.xml

@@ -11,6 +11,7 @@
     android:roundIcon="@mipmap/ic_launcher_round"
     android:supportsRtl="true"
     android:theme="@style/OppiaTheme">
+    <activity android:name=".player.exploration.ExplorationActivity"/>
     <activity android:name="org.oppia.app.home.HomeActivity">
       <intent-filter>
         <action android:name="android.intent.action.MAIN"/>

app/src/main/java/org/oppia/app/activity/ActivityComponent.kt

@@ -5,6 +5,7 @@ import dagger.BindsInstance
 import dagger.Subcomponent
 import org.oppia.app.fragment.FragmentComponent
 import org.oppia.app.home.HomeActivity
+import org.oppia.app.player.exploration.ExplorationActivity
 import javax.inject.Provider
 
 /** Root subcomponent for all activities. */
@@ -19,5 +20,6 @@ interface ActivityComponent {
 
   fun getFragmentComponentBuilderProvider(): Provider<FragmentComponent.Builder>
 
+  fun inject(explorationActivity: ExplorationActivity)
   fun inject(homeActivity: HomeActivity)
 }

app/src/main/java/org/oppia/app/fragment/FragmentComponent.kt

@@ -4,6 +4,8 @@ import androidx.fragment.app.Fragment
 import dagger.BindsInstance
 import dagger.Subcomponent
 import org.oppia.app.home.HomeFragment
+import org.oppia.app.player.exploration.ExplorationFragment
+import org.oppia.app.player.state.StateFragment
 
 /** Root subcomponent for all fragments. */
 @Subcomponent
@@ -15,5 +17,7 @@ interface FragmentComponent {
     fun build(): FragmentComponent
   }
 
+  fun inject(explorationFragment: ExplorationFragment)
   fun inject(homeFragment: HomeFragment)
+  fun inject(stateFragment: StateFragment)
 }

app/src/main/java/org/oppia/app/player/exploration/ExplorationActivity.kt

@@ -0,0 +1,16 @@
+package org.oppia.app.player.exploration
+
+import android.os.Bundle
+import org.oppia.app.activity.InjectableAppCompatActivity
+import javax.inject.Inject
+
+/** The starting point for exploration*/
+class ExplorationActivity : InjectableAppCompatActivity() {
+  @Inject lateinit var explorationActivityController: ExplorationActivityController
+
+  override fun onCreate(savedInstanceState: Bundle?) {
+    super.onCreate(savedInstanceState)
+    activityComponent.inject(this)
+    explorationActivityController.handleOnCreate()
+  }
+}

app/src/main/java/org/oppia/app/player/exploration/ExplorationActivityController.kt

@@ -0,0 +1,18 @@
+package org.oppia.app.player.exploration
+
+import androidx.appcompat.app.AppCompatActivity
+import org.oppia.app.R
+import org.oppia.app.activity.ActivityScope
+import javax.inject.Inject
+
+/** The controller for [ExplorationActivity]. */
+@ActivityScope
+class ExplorationActivityController @Inject constructor(private val activity: AppCompatActivity) {
+  fun handleOnCreate() {
+    activity.setContentView(R.layout.exploration_activity)
+    activity.supportFragmentManager.beginTransaction().add(
+      R.id.exploration_fragment_placeholder,
+      ExplorationFragment()
+    ).commitNow()
+  }
+}

app/src/main/java/org/oppia/app/player/exploration/ExplorationFragment.kt

@@ -0,0 +1,23 @@
+package org.oppia.app.player.exploration
+
+import android.content.Context
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import org.oppia.app.fragment.InjectableFragment
+import javax.inject.Inject
+
+/** Fragment that contains displays single exploration.*/
+class ExplorationFragment : InjectableFragment() {
+  @Inject lateinit var explorationFragmentController: ExplorationFragmentController
+
+  override fun onAttach(context: Context?) {
+    super.onAttach(context)
+    fragmentComponent.inject(this)
+  }
+
+  override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
+    return explorationFragmentController.handleCreateView(inflater, container)
+  }
+}

app/src/main/java/org/oppia/app/player/exploration/ExplorationFragmentController.kt

@@ -0,0 +1,20 @@
+package org.oppia.app.player.exploration
+
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import org.oppia.app.databinding.ExplorationFragmentBinding
+import org.oppia.app.fragment.FragmentScope
+import javax.inject.Inject
+
+/** The controller for [ExplorationFragment]. */
+@FragmentScope
+class ExplorationFragmentController @Inject constructor(
+  private val fragment: Fragment
+) {
+  fun handleCreateView(inflater: LayoutInflater, container: ViewGroup?): View? {
+    val binding = ExplorationFragmentBinding.inflate(inflater, container, /* attachToRoot= */ false)
+    return binding.root
+  }
+}

app/src/main/java/org/oppia/app/player/state/StateFragment.kt

@@ -0,0 +1,24 @@
+package org.oppia.app.player.state
+
+import android.content.Context
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import org.oppia.app.fragment.InjectableFragment
+import javax.inject.Inject
+
+/** Fragment that contains displays current state of exploration.*/
+class StateFragment : InjectableFragment() {
+  @Inject
+  lateinit var stateFragmentController: StateFragmentController
+
+  override fun onAttach(context: Context?) {
+    super.onAttach(context)
+    fragmentComponent.inject(this)
+  }
+
+  override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
+    return stateFragmentController.handleCreateView(inflater, container)
+  }
+}

app/src/main/java/org/oppia/app/player/state/StateFragmentController.kt

@@ -0,0 +1,22 @@
+package org.oppia.app.player.state
+
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import org.oppia.app.databinding.ExplorationFragmentBinding
+import org.oppia.app.databinding.HomeFragmentBinding
+import org.oppia.app.databinding.StateFragmentBinding
+import org.oppia.app.fragment.FragmentScope
+import javax.inject.Inject
+
+/** The controller for [StateFragment]. */
+@FragmentScope
+class StateFragmentController @Inject constructor(
+  private val fragment: Fragment
+) {
+  fun handleCreateView(inflater: LayoutInflater, container: ViewGroup?): View? {
+    val binding = StateFragmentBinding.inflate(inflater, container, /* attachToRoot= */ false)
+    return binding.root
+  }
+}

app/src/main/res/layout/exploration_activity.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout
+  xmlns:android="http://schemas.android.com/apk/res/android"
+  xmlns:tools="http://schemas.android.com/tools"
+  android:id="@+id/exploration_fragment_placeholder"
+  android:layout_width="match_parent"
+  android:layout_height="match_parent"
+  tools:context=".player.exploration.ExplorationActivity" />

app/src/main/res/layout/exploration_fragment.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layout
+  xmlns:android="http://schemas.android.com/apk/res/android">
+  <data>
+  </data>
+
+  <androidx.constraintlayout.widget.ConstraintLayout
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+  </androidx.constraintlayout.widget.ConstraintLayout>
+</layout>

app/src/main/res/layout/state_fragment.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layout
+  xmlns:android="http://schemas.android.com/apk/res/android">
+  <data>
+  </data>
+
+  <androidx.constraintlayout.widget.ConstraintLayout
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+  </androidx.constraintlayout.widget.ConstraintLayout>
+</layout>