Refactor: Remove MaterialToolbar from AndroidStartProjectActivity

This commit removes the `MaterialToolbar` and its associated logic from `AndroidStartProjectActivity`. The share functionality and toolbar setup have been deleted from the activity's `onCreate` method.

The layout file `activity_android_start_project.xml` has been updated to remove the `MaterialToolbar` view and adjust the `FastScrollScrollView` constraints to fill the parent layout. Additionally, a new `<include>` for a `lesson_section_header` has been added.

Author: MihaiCristianCondrea

app/src/main/java/com/d4rk/androidtutorials/java/ui/screens/android/lessons/start/AndroidStartProjectActivity.java

@@ -1,10 +1,8 @@
 package com.d4rk.androidtutorials.java.ui.screens.android.lessons.start;
 
-import android.content.Intent;
 import android.os.Bundle;
 import android.text.method.LinkMovementMethod;
 
-import com.d4rk.androidtutorials.java.BuildConfig;
 import com.d4rk.androidtutorials.java.R;
 import com.d4rk.androidtutorials.java.ads.AdUtils;
 import com.d4rk.androidtutorials.java.databinding.ActivityAndroidStartProjectBinding;
@@ -22,20 +20,6 @@ protected void onCreate(Bundle savedInstanceState) {
         ActivityAndroidStartProjectBinding binding = ActivityAndroidStartProjectBinding.inflate(getLayoutInflater());
         setContentView(binding.getRoot());
         EdgeToEdgeHelper.applyEdgeToEdge(getWindow(), binding.getRoot());
-        setSupportActionBar(binding.topAppBar);
-        binding.topAppBar.setNavigationOnClickListener(v -> getOnBackPressedDispatcher().onBackPressed());
-        binding.topAppBar.setOnMenuItemClickListener(item -> {
-            if (item.getItemId() == R.id.action_share) {
-                Intent sharingIntent = new Intent(Intent.ACTION_SEND);
-                sharingIntent.setType("text/plain");
-                String shareLink = "https://play.google.com/store/apps/details?id=" + BuildConfig.APPLICATION_ID;
-                sharingIntent.putExtra(Intent.EXTRA_TEXT, shareLink);
-                sharingIntent.putExtra(Intent.EXTRA_SUBJECT, getString(R.string.share_subject));
-                startActivity(Intent.createChooser(sharingIntent, getString(R.string.share_using)));
-                return true;
-            }
-            return false;
-        });
         AdUtils.loadBanner(binding.adViewBottom);
         AdUtils.loadBanner(binding.adView);
         new FastScrollerBuilder(binding.scrollView).useMd2Style().build();

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

@@ -2,29 +2,19 @@
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:ads="http://schemas.android.com/apk/res-auto"
     xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/constraint_layout"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
-    <com.google.android.material.appbar.MaterialToolbar
-        android:id="@+id/top_app_bar"
-        android:layout_width="0dp"
-        android:layout_height="wrap_content"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent"
-        app:menu="@menu/menu_share"
-        app:shapeAppearanceOverlay="@style/ShapeTokens.Clover"
-        app:title="@string/android_start_project" />
-
     <me.zhanghai.android.fastscroll.FastScrollScrollView
         android:id="@+id/scroll_view"
         android:layout_width="0dp"
         android:layout_height="0dp"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@id/top_app_bar">
+        app:layout_constraintTop_toTopOf="parent">
 
         <androidx.appcompat.widget.LinearLayoutCompat
             android:layout_width="match_parent"
@@ -33,6 +23,11 @@
             android:paddingHorizontal="24dp"
             android:paddingVertical="24dp">
 
+            <include
+                android:id="@+id/layout_preview_header"
+                layout="@layout/lesson_section_header"
+                tools:text="@string/layout_preview" />
+
             <com.google.android.material.textview.MaterialTextView
                 android:id="@+id/text_view_first_step"
                 android:layout_width="wrap_content"