Add ConstraintLayout, RecyclerView and ViewModel lesson modules with code tabs

app/src/main/AndroidManifest.xml

@@ -202,6 +202,21 @@
             android:exported="false"
             android:label="@string/table_layout"
             android:parentActivityName=".ui.screens.main.MainActivity" />
+        <activity
+            android:name=".ui.screens.android.lessons.layouts.constraint.ConstraintLayoutActivity"
+            android:exported="false"
+            android:label="@string/constraint_layout"
+            android:parentActivityName=".ui.screens.main.MainActivity" />
+        <activity
+            android:name=".ui.screens.android.lessons.lists.recyclerview.RecyclerViewActivity"
+            android:exported="false"
+            android:label="@string/recycler_view"
+            android:parentActivityName=".ui.screens.main.MainActivity" />
+        <activity
+            android:name=".ui.screens.android.lessons.architecture.viewmodel.ViewModelActivity"
+            android:exported="false"
+            android:label="@string/view_model"
+            android:parentActivityName=".ui.screens.main.MainActivity" />
         <activity
             android:name=".ui.screens.android.lessons.views.grid.GirdViewActivity"
             android:exported="false"
@@ -341,4 +356,4 @@
             android:name="google_analytics_default_allow_ad_personalization_signals"
             android:value="eu_consent_policy" />
     </application>
-</manifest>
+</manifest>

app/src/main/java/com/d4rk/androidtutorials/java/ui/screens/android/lessons/architecture/viewmodel/CounterViewModel.java

@@ -0,0 +1,22 @@
+package com.d4rk.androidtutorials.java.ui.screens.android.lessons.architecture.viewmodel;
+
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+import androidx.lifecycle.ViewModel;
+
+public class CounterViewModel extends ViewModel {
+
+    private final MutableLiveData<Integer> counter = new MutableLiveData<>(0);
+
+    public LiveData<Integer> getCounter() {
+        return counter;
+    }
+
+    public void incrementCounter() {
+        Integer currentValue = counter.getValue();
+        if (currentValue == null) {
+            currentValue = 0;
+        }
+        counter.setValue(currentValue + 1);
+    }
+}

app/src/main/java/com/d4rk/androidtutorials/java/ui/screens/android/lessons/architecture/viewmodel/ViewModelActivity.java

@@ -0,0 +1,59 @@
+package com.d4rk.androidtutorials.java.ui.screens.android.lessons.architecture.viewmodel;
+
+import android.os.Bundle;
+
+import androidx.annotation.Nullable;
+import androidx.lifecycle.ViewModelProvider;
+
+import com.d4rk.androidtutorials.java.R;
+import com.d4rk.androidtutorials.java.databinding.ActivityViewModelBinding;
+import com.d4rk.androidtutorials.java.ui.components.navigation.SyntaxFabActivity;
+import com.d4rk.androidtutorials.java.ui.screens.android.lessons.architecture.viewmodel.tabs.ViewModelTabCodeFragment;
+import com.d4rk.androidtutorials.java.ui.screens.android.lessons.architecture.viewmodel.tabs.ViewModelTabLayoutFragment;
+import com.d4rk.androidtutorials.java.ui.screens.android.lessons.common.LessonCodeTabsActivity;
+import com.d4rk.androidtutorials.java.ui.utils.LessonUiUtils;
+import com.d4rk.androidtutorials.java.utils.EdgeToEdgeHelper;
+
+import java.util.Arrays;
+
+import me.zhanghai.android.fastscroll.FastScrollerBuilder;
+
+public class ViewModelActivity extends SyntaxFabActivity {
+
+    private ActivityViewModelBinding binding;
+
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        binding = ActivityViewModelBinding.inflate(getLayoutInflater());
+        setContentView(binding.getRoot());
+        EdgeToEdgeHelper.applyEdgeToEdge(getWindow(), binding.getRoot());
+        LessonUiUtils.setupDescriptionSection(binding.descriptionSection,
+                R.string.summary_view_model,
+                true);
+
+        new FastScrollerBuilder(binding.scrollView).useMd2Style().build();
+
+        CounterViewModel counterViewModel = new ViewModelProvider(this).get(CounterViewModel.class);
+        binding.incrementButton.setOnClickListener(view -> counterViewModel.incrementCounter());
+        counterViewModel.getCounter().observe(this, value ->
+                binding.counterValue.setText(getString(R.string.view_model_counter_value, value)));
+
+        setupSyntaxFab(binding.floatingButtonShowSyntax, () -> startActivity(
+                LessonCodeTabsActivity.createIntent(
+                        this,
+                        R.string.view_model,
+                        Arrays.asList(
+                                LessonCodeTabsActivity.PageSpec.of(
+                                        ViewModelTabCodeFragment.class,
+                                        getString(R.string.code_java)
+                                ),
+                                LessonCodeTabsActivity.PageSpec.of(
+                                        ViewModelTabLayoutFragment.class,
+                                        getString(R.string.layout_xml)
+                                )
+                        )
+                )));
+    }
+}

app/src/main/java/com/d4rk/androidtutorials/java/ui/screens/android/lessons/architecture/viewmodel/tabs/ViewModelTabCodeFragment.java

@@ -0,0 +1,37 @@
+package com.d4rk.androidtutorials.java.ui.screens.android.lessons.architecture.viewmodel.tabs;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+
+import com.d4rk.androidtutorials.java.R;
+import com.d4rk.androidtutorials.java.databinding.FragmentCodeBinding;
+import com.d4rk.androidtutorials.java.ui.components.NoCodeAdFragment;
+import com.d4rk.androidtutorials.java.utils.CodeViewUtils;
+
+public class ViewModelTabCodeFragment extends NoCodeAdFragment<FragmentCodeBinding> {
+
+    @Override
+    @NonNull
+    protected FragmentCodeBinding inflateBinding(@NonNull LayoutInflater inflater, ViewGroup container) {
+        return FragmentCodeBinding.inflate(inflater, container, false);
+    }
+
+    @Override
+    @NonNull
+    protected View getAdView(@NonNull FragmentCodeBinding binding) {
+        return binding.adView;
+    }
+
+    @Override
+    protected void onBindingCreated(@NonNull FragmentCodeBinding binding, Bundle savedInstanceState) {
+        CodeViewUtils.populateFromRawResource(
+                binding.codeView,
+                R.raw.text_view_model_java,
+                CodeViewUtils.HighlightMode.JAVA,
+                "ViewModelTabCode");
+    }
+}

app/src/main/java/com/d4rk/androidtutorials/java/ui/screens/android/lessons/architecture/viewmodel/tabs/ViewModelTabLayoutFragment.java

@@ -0,0 +1,37 @@
+package com.d4rk.androidtutorials.java.ui.screens.android.lessons.architecture.viewmodel.tabs;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+
+import com.d4rk.androidtutorials.java.R;
+import com.d4rk.androidtutorials.java.databinding.FragmentCodeBinding;
+import com.d4rk.androidtutorials.java.ui.components.NoCodeAdFragment;
+import com.d4rk.androidtutorials.java.utils.CodeViewUtils;
+
+public class ViewModelTabLayoutFragment extends NoCodeAdFragment<FragmentCodeBinding> {
+
+    @Override
+    @NonNull
+    protected FragmentCodeBinding inflateBinding(@NonNull LayoutInflater inflater, ViewGroup container) {
+        return FragmentCodeBinding.inflate(inflater, container, false);
+    }
+
+    @Override
+    @NonNull
+    protected View getAdView(@NonNull FragmentCodeBinding binding) {
+        return binding.adView;
+    }
+
+    @Override
+    protected void onBindingCreated(@NonNull FragmentCodeBinding binding, Bundle savedInstanceState) {
+        CodeViewUtils.populateFromRawResource(
+                binding.codeView,
+                R.raw.text_view_model_xml,
+                CodeViewUtils.HighlightMode.XML,
+                "ViewModelTabLayout");
+    }
+}

app/src/main/java/com/d4rk/androidtutorials/java/ui/screens/android/lessons/layouts/constraint/ConstraintLayoutActivity.java

@@ -0,0 +1,53 @@
+package com.d4rk.androidtutorials.java.ui.screens.android.lessons.layouts.constraint;
+
+import android.os.Bundle;
+
+import androidx.annotation.Nullable;
+
+import com.d4rk.androidtutorials.java.R;
+import com.d4rk.androidtutorials.java.databinding.ActivityConstraintLayoutBinding;
+import com.d4rk.androidtutorials.java.ui.components.navigation.SyntaxFabActivity;
+import com.d4rk.androidtutorials.java.ui.screens.android.lessons.common.LessonCodeTabsActivity;
+import com.d4rk.androidtutorials.java.ui.screens.android.lessons.layouts.constraint.tabs.ConstraintLayoutTabCodeFragment;
+import com.d4rk.androidtutorials.java.ui.screens.android.lessons.layouts.constraint.tabs.ConstraintLayoutTabLayoutFragment;
+import com.d4rk.androidtutorials.java.ui.utils.LessonUiUtils;
+import com.d4rk.androidtutorials.java.utils.EdgeToEdgeHelper;
+
+import java.util.Arrays;
+
+import me.zhanghai.android.fastscroll.FastScrollerBuilder;
+
+public class ConstraintLayoutActivity extends SyntaxFabActivity {
+
+    private ActivityConstraintLayoutBinding binding;
+
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        binding = ActivityConstraintLayoutBinding.inflate(getLayoutInflater());
+        setContentView(binding.getRoot());
+        EdgeToEdgeHelper.applyEdgeToEdge(getWindow(), binding.getRoot());
+        LessonUiUtils.setupDescriptionSection(binding.descriptionSection,
+                R.string.summary_constraint_layout,
+                true);
+
+        new FastScrollerBuilder(binding.scrollView).useMd2Style().build();
+
+        setupSyntaxFab(binding.floatingButtonShowSyntax, () -> startActivity(
+                LessonCodeTabsActivity.createIntent(
+                        this,
+                        R.string.constraint_layout,
+                        Arrays.asList(
+                                LessonCodeTabsActivity.PageSpec.of(
+                                        ConstraintLayoutTabCodeFragment.class,
+                                        getString(R.string.code_java)
+                                ),
+                                LessonCodeTabsActivity.PageSpec.of(
+                                        ConstraintLayoutTabLayoutFragment.class,
+                                        getString(R.string.layout_xml)
+                                )
+                        )
+                )));
+    }
+}

app/src/main/java/com/d4rk/androidtutorials/java/ui/screens/android/lessons/layouts/constraint/tabs/ConstraintLayoutTabCodeFragment.java

@@ -0,0 +1,37 @@
+package com.d4rk.androidtutorials.java.ui.screens.android.lessons.layouts.constraint.tabs;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+
+import com.d4rk.androidtutorials.java.R;
+import com.d4rk.androidtutorials.java.databinding.FragmentCodeBinding;
+import com.d4rk.androidtutorials.java.ui.components.NoCodeAdFragment;
+import com.d4rk.androidtutorials.java.utils.CodeViewUtils;
+
+public class ConstraintLayoutTabCodeFragment extends NoCodeAdFragment<FragmentCodeBinding> {
+
+    @Override
+    @NonNull
+    protected FragmentCodeBinding inflateBinding(@NonNull LayoutInflater inflater, ViewGroup container) {
+        return FragmentCodeBinding.inflate(inflater, container, false);
+    }
+
+    @Override
+    @NonNull
+    protected View getAdView(@NonNull FragmentCodeBinding binding) {
+        return binding.adView;
+    }
+
+    @Override
+    protected void onBindingCreated(@NonNull FragmentCodeBinding binding, Bundle savedInstanceState) {
+        CodeViewUtils.populateFromRawResource(
+                binding.codeView,
+                R.raw.text_constraint_layout_java,
+                CodeViewUtils.HighlightMode.JAVA,
+                "ConstraintLayoutTabCode");
+    }
+}

app/src/main/java/com/d4rk/androidtutorials/java/ui/screens/android/lessons/layouts/constraint/tabs/ConstraintLayoutTabLayoutFragment.java

@@ -0,0 +1,37 @@
+package com.d4rk.androidtutorials.java.ui.screens.android.lessons.layouts.constraint.tabs;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+
+import com.d4rk.androidtutorials.java.R;
+import com.d4rk.androidtutorials.java.databinding.FragmentCodeBinding;
+import com.d4rk.androidtutorials.java.ui.components.NoCodeAdFragment;
+import com.d4rk.androidtutorials.java.utils.CodeViewUtils;
+
+public class ConstraintLayoutTabLayoutFragment extends NoCodeAdFragment<FragmentCodeBinding> {
+
+    @Override
+    @NonNull
+    protected FragmentCodeBinding inflateBinding(@NonNull LayoutInflater inflater, ViewGroup container) {
+        return FragmentCodeBinding.inflate(inflater, container, false);
+    }
+
+    @Override
+    @NonNull
+    protected View getAdView(@NonNull FragmentCodeBinding binding) {
+        return binding.adView;
+    }
+
+    @Override
+    protected void onBindingCreated(@NonNull FragmentCodeBinding binding, Bundle savedInstanceState) {
+        CodeViewUtils.populateFromRawResource(
+                binding.codeView,
+                R.raw.text_constraint_layout_xml,
+                CodeViewUtils.HighlightMode.XML,
+                "ConstraintLayoutTabLayout");
+    }
+}

app/src/main/java/com/d4rk/androidtutorials/java/ui/screens/android/lessons/lists/recyclerview/RecyclerViewActivity.java

@@ -0,0 +1,67 @@
+package com.d4rk.androidtutorials.java.ui.screens.android.lessons.lists.recyclerview;
+
+import android.os.Bundle;
+
+import androidx.annotation.Nullable;
+import androidx.recyclerview.widget.LinearLayoutManager;
+
+import com.d4rk.androidtutorials.java.R;
+import com.d4rk.androidtutorials.java.databinding.ActivityRecyclerViewBinding;
+import com.d4rk.androidtutorials.java.ui.components.navigation.SyntaxFabActivity;
+import com.d4rk.androidtutorials.java.ui.screens.android.lessons.common.LessonCodeTabsActivity;
+import com.d4rk.androidtutorials.java.ui.screens.android.lessons.lists.recyclerview.tabs.RecyclerViewTabCodeFragment;
+import com.d4rk.androidtutorials.java.ui.screens.android.lessons.lists.recyclerview.tabs.RecyclerViewTabLayoutFragment;
+import com.d4rk.androidtutorials.java.ui.utils.LessonUiUtils;
+import com.d4rk.androidtutorials.java.utils.EdgeToEdgeHelper;
+
+import java.util.Arrays;
+import java.util.List;
+
+import me.zhanghai.android.fastscroll.FastScrollerBuilder;
+
+public class RecyclerViewActivity extends SyntaxFabActivity {
+
+    private ActivityRecyclerViewBinding binding;
+
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        binding = ActivityRecyclerViewBinding.inflate(getLayoutInflater());
+        setContentView(binding.getRoot());
+        EdgeToEdgeHelper.applyEdgeToEdge(getWindow(), binding.getRoot());
+        LessonUiUtils.setupDescriptionSection(binding.descriptionSection,
+                R.string.summary_recycler_view,
+                true);
+
+        new FastScrollerBuilder(binding.scrollView).useMd2Style().build();
+
+        binding.recyclerViewPreview.setLayoutManager(new LinearLayoutManager(this));
+        binding.recyclerViewPreview.setAdapter(new RecyclerViewPreviewAdapter(getLessonTitles()));
+
+        setupSyntaxFab(binding.floatingButtonShowSyntax, () -> startActivity(
+                LessonCodeTabsActivity.createIntent(
+                        this,
+                        R.string.recycler_view,
+                        Arrays.asList(
+                                LessonCodeTabsActivity.PageSpec.of(
+                                        RecyclerViewTabCodeFragment.class,
+                                        getString(R.string.code_java)
+                                ),
+                                LessonCodeTabsActivity.PageSpec.of(
+                                        RecyclerViewTabLayoutFragment.class,
+                                        getString(R.string.layout_xml)
+                                )
+                        )
+                )));
+    }
+
+    private List<String> getLessonTitles() {
+        return Arrays.asList(
+                getString(R.string.linear_layout),
+                getString(R.string.constraint_layout),
+                getString(R.string.recycler_view),
+                getString(R.string.view_model)
+        );
+    }
+}