app/build.gradle

@@ -35,6 +35,7 @@ dependencies {
     implementation libs.material
     implementation libs.activity
     implementation libs.constraintlayout
+    implementation project(':model')
     testImplementation libs.junit
     androidTestImplementation libs.ext.junit
     androidTestImplementation libs.espresso.core

app/src/main/java/one/nem/kidshift/MainActivity.java

@@ -14,11 +14,13 @@ import androidx.navigation.fragment.NavHostFragment;
 import androidx.navigation.ui.NavigationUI;
 
 import com.google.android.material.bottomnavigation.BottomNavigationView;
+import com.google.android.material.floatingactionbutton.FloatingActionButton;
 
 import javax.inject.Inject;
 
 import dagger.hilt.android.AndroidEntryPoint;
 import one.nem.kidshift.data.UserSettings;
+import one.nem.kidshift.utils.FabManager;
 import one.nem.kidshift.utils.KSLogger;
 import one.nem.kidshift.utils.factory.KSLoggerFactory;
 
@@ -28,8 +30,13 @@ public class MainActivity extends AppCompatActivity {
     @Inject
     KSLoggerFactory loggerFactory;
 
+    @Inject
+    FabManager fabManager;
+
     private KSLogger logger;
 
+    private FloatingActionButton fab;
+
     @Inject
     UserSettings userSettings;
 
@@ -71,6 +78,9 @@ public class MainActivity extends AppCompatActivity {
             Intent intent = new Intent(this, LoginActivity.class);
             startActivity(intent);
         }
+
+        fab = findViewById(R.id.mainFab);
+        fabManager.setFab(fab);
     }
 
     /**

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

@@ -27,4 +27,15 @@
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:menu="@menu/main_nav_menu" />
+
+    <com.google.android.material.floatingactionbutton.FloatingActionButton
+        android:id="@+id/mainFab"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginEnd="24dp"
+        android:layout_marginBottom="24dp"
+        android:clickable="true"
+        app:layout_constraintBottom_toTopOf="@id/bottom_nav"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:srcCompat="@drawable/add_24px" />
 </androidx.constraintlayout.widget.ConstraintLayout>

feature/setting/src/main/java/one/nem/kidshift/feature/setting/SettingMainFragment.java

@@ -29,6 +29,7 @@ import one.nem.kidshift.model.ChildModel;
 import one.nem.kidshift.model.ParentModel;
 import one.nem.kidshift.model.callback.ChildModelCallback;
 import one.nem.kidshift.model.callback.ParentModelCallback;
+import one.nem.kidshift.utils.FabManager;
 import one.nem.kidshift.utils.KSLogger;
 import one.nem.kidshift.utils.factory.KSLoggerFactory;
 
@@ -44,6 +45,9 @@ public class SettingMainFragment extends Fragment {
     @Inject
     KSLoggerFactory ksLoggerFactory;
 
+    @Inject
+    FabManager fabManager;
+
     private KSLogger logger;
 
     TextView username;

feature/setting/src/main/res/layout/fragment_setting_main.xml

@@ -8,7 +8,7 @@
     android:id="@+id/swipe_refresh_layout">
 
 
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.constraintlayout.widget.ConstraintLayout
     android:layout_width="match_parent"
     android:layout_height="wrap_content">
 

utils/src/main/java/one/nem/kidshift/utils/FabManager.java

@@ -0,0 +1,55 @@
+package one.nem.kidshift.utils;
+
+import com.google.android.material.floatingactionbutton.FloatingActionButton;
+
+import javax.inject.Inject;
+import javax.inject.Singleton;
+
+import one.nem.kidshift.utils.factory.KSLoggerFactory;
+import one.nem.kidshift.utils.models.FabEventCallback;
+
+@Singleton
+public class FabManager {
+    private FloatingActionButton fab;
+    private final KSLogger logger;
+
+    @Inject
+    public FabManager(KSLoggerFactory loggerFactory) {
+        this.logger = loggerFactory.create("FabManager");
+    }
+
+    public void setFab(FloatingActionButton fab) {
+        this.fab = fab;
+    }
+
+    private void checkFab() {
+        if (fab == null) {
+            logger.error("Fab is not set");
+            throw new IllegalStateException("Fab is not set");
+        }
+    }
+
+    public void show() {
+        checkFab();
+        fab.show();
+    }
+
+    public void hide() {
+        checkFab();
+        fab.hide();
+    }
+
+    public boolean isShown() {
+        checkFab();
+        return fab.isShown();
+    }
+
+    public void setFabEventCallback(FabEventCallback callback) {
+        checkFab();
+        fab.setOnClickListener(v -> callback.onClicked());
+        fab.setOnLongClickListener(v -> {
+            callback.onLongClicked();
+            return true;
+        });
+    }
+}

utils/src/main/java/one/nem/kidshift/utils/models/FabEventCallback.java

@@ -0,0 +1,7 @@
+package one.nem.kidshift.utils.models;
+
+public interface FabEventCallback {
+    void onClicked();
+    void onLongClicked();
+    void onSwiped();
+}

utils/src/main/java/one/nem/kidshift/utils/modules/FabManagerModule.java

@@ -0,0 +1,21 @@
+package one.nem.kidshift.utils.modules;
+
+import dagger.Module;
+import dagger.Provides;
+import dagger.hilt.InstallIn;
+import dagger.hilt.components.SingletonComponent;
+import one.nem.kidshift.utils.FabManager;
+import one.nem.kidshift.utils.factory.KSLoggerFactory;
+
+import javax.inject.Singleton;
+
+@Module
+@InstallIn(SingletonComponent.class)
+public class FabManagerModule {
+
+    @Provides
+    @Singleton
+    public FabManager provideFabManager(KSLoggerFactory loggerFactory) {
+        return new FabManager(loggerFactory);
+    }
+}