Add search to Home screen

Author: MihaiCristianCondrea

app/src/main/java/com/d4rk/androidtutorials/java/ui/screens/home/HomeFragment.java

@@ -7,6 +7,7 @@
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.appcompat.widget.SearchView;
 import androidx.fragment.app.Fragment;
 import androidx.lifecycle.ViewModelProvider;
 
@@ -39,6 +40,19 @@ public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceStat
                 getString(com.d4rk.androidtutorials.java.R.string.announcement_title),
                 getString(com.d4rk.androidtutorials.java.R.string.announcement_subtitle)
         );
+        binding.searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
+            @Override
+            public boolean onQueryTextSubmit(String query) {
+                homeViewModel.setSearchQuery(query);
+                return true;
+            }
+
+            @Override
+            public boolean onQueryTextChange(String newText) {
+                homeViewModel.setSearchQuery(newText);
+                return true;
+            }
+        });
         LayoutInflater inflater = LayoutInflater.from(requireContext());
         homeViewModel.getUiState().observe(getViewLifecycleOwner(), state -> {
             binding.announcementTitle.setText(state.announcementTitle());

app/src/main/java/com/d4rk/androidtutorials/java/ui/screens/home/HomeViewModel.java

@@ -29,6 +29,8 @@ public class HomeViewModel extends ViewModel {
     private final GetAppPlayStoreUrlUseCase getAppPlayStoreUrlUseCase;
 
     private final MutableLiveData<HomeUiState> uiState = new MutableLiveData<>();
+    private final MutableLiveData<String> searchQuery = new MutableLiveData<>("");
+    private List<PromotedApp> allPromotedApps = new ArrayList<>();
 
     @Inject
     public HomeViewModel(GetDailyTipUseCase getDailyTipUseCase,
@@ -59,18 +61,8 @@ public HomeViewModel(GetDailyTipUseCase getDailyTipUseCase,
                     result.add(apps.get((startIndex + i) % apps.size()));
                 }
             }
-            HomeUiState current = uiState.getValue();
-            if (current == null) {
-                current = new HomeUiState("", "", "", result);
-            } else {
-                current = new HomeUiState(
-                        current.announcementTitle(),
-                        current.announcementSubtitle(),
-                        current.dailyTip(),
-                        result
-                );
-            }
-            uiState.postValue(current);
+            allPromotedApps = result;
+            filterPromotedApps();
         });
     }
 
@@ -84,6 +76,34 @@ public void setAnnouncements(String title, String subtitle) {
         uiState.setValue(current);
     }
 
+    public void setSearchQuery(String query) {
+        searchQuery.setValue(query);
+        filterPromotedApps();
+    }
+
+    private void filterPromotedApps() {
+        String query = searchQuery.getValue();
+        List<PromotedApp> filtered = new ArrayList<>();
+        for (PromotedApp app : allPromotedApps) {
+            if (query == null || query.isEmpty() ||
+                    app.name().toLowerCase().contains(query.toLowerCase())) {
+                filtered.add(app);
+            }
+        }
+        HomeUiState current = uiState.getValue();
+        if (current == null) {
+            current = new HomeUiState("", "", getDailyTipUseCase.invoke(), filtered);
+        } else {
+            current = new HomeUiState(
+                    current.announcementTitle(),
+                    current.announcementSubtitle(),
+                    current.dailyTip(),
+                    filtered
+            );
+        }
+        uiState.postValue(current);
+    }
+
     /**
      * Exposes the UI state for the Home screen.
      */

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

@@ -168,6 +168,15 @@
                     android:text="@string/other_apps_title"
                     android:textAppearance="@style/TextAppearance.Material3.TitleMedium" />
 
+                <androidx.appcompat.widget.SearchView
+                    android:id="@+id/search_view"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginBottom="8dp"
+                    android:queryHint="@string/search_tutorials_hint"
+                    android:contentDescription="@string/search_tutorials_content_description"
+                    android:iconifiedByDefault="false" />
+
                 <HorizontalScrollView
                     android:layout_width="match_parent"
                     android:layout_height="wrap_content"

app/src/main/res/values/strings.xml

@@ -19,6 +19,8 @@
       <string name="get_on_google_play">Get it on Google Play</string>
       <string name="learn_more">Learn More</string>
       <string name="play_store">Play Store</string>
+      <string name="search_tutorials_hint">Search tutorials</string>
+      <string name="search_tutorials_content_description">Search tutorials</string>
 
     <string name="android_studio">Android Studio</string>