Main fab fixes, Init AddRestaurantActivity, RestaurantActivity

UI/AndroidApp/flavoursWithoutBorders/app/build.gradle

@@ -34,7 +34,6 @@ dependencies {
     implementation 'androidx.lifecycle:lifecycle-extensions:2.0.0'
     implementation 'com.mikepenz:fontawesome-typeface:4.7.0.0@aar'
     implementation 'com.mikepenz:google-material-typeface:3.0.1.2.original@aar'
-    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
     implementation 'com.google.android.material:material:1.0.0'
     implementation 'com.google.android.gms:play-services-maps:16.0.0'
 }

UI/AndroidApp/flavoursWithoutBorders/app/src/main/AndroidManifest.xml

@@ -45,6 +45,8 @@
         <activity
             android:name=".activities.main.MainActivity"
             android:label="@string/main_activity_title" />
+        <activity android:name=".activities.restaurant.RestaurantActivity" />
+        <activity android:name=".activities.restaurant.AddRestaurantActivity" />
     </application>
 
 </manifest>

UI/AndroidApp/flavoursWithoutBorders/app/src/main/java/gr/auth/databases/flavours/activities/LoginActivity.java

@@ -18,7 +18,7 @@ public class LoginActivity extends BaseActivity {
         findViewById(R.id.login_btn_sign_up).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
-                Intent intent = new Intent(getBaseContext(), SignUpActivity.class);
+                Intent intent = new Intent(view.getContext(), SignUpActivity.class);
                 startActivity(intent);
                 finish();
             }
@@ -27,7 +27,7 @@ public class LoginActivity extends BaseActivity {
         findViewById(R.id.login_btn_login).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
-                Intent intent = new Intent(getBaseContext(), MainActivity.class);
+                Intent intent = new Intent(view.getContext(), MainActivity.class);
                 startActivity(intent);
                 finish();
             }

UI/AndroidApp/flavoursWithoutBorders/app/src/main/java/gr/auth/databases/flavours/activities/SignUpActivity.java

@@ -29,7 +29,7 @@ public class SignUpActivity extends BaseActivity {
         findViewById(R.id.sign_up_btn_login).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
-                Intent intent = new Intent(getBaseContext(), LoginActivity.class);
+                Intent intent = new Intent(view.getContext(), LoginActivity.class);
                 startActivity(intent);
                 finish();
             }

UI/AndroidApp/flavoursWithoutBorders/app/src/main/java/gr/auth/databases/flavours/activities/main/MainActivity.java

@@ -1,8 +1,10 @@
 package gr.auth.databases.flavours.activities.main;
 
+import android.content.Intent;
 import android.os.Bundle;
 import android.view.Menu;
 import android.view.MenuItem;
+import android.view.View;
 
 import androidx.annotation.NonNull;
 import androidx.appcompat.app.ActionBar;
@@ -13,12 +15,14 @@ import androidx.fragment.app.FragmentStatePagerAdapter;
 import androidx.viewpager.widget.PagerAdapter;
 import androidx.viewpager.widget.ViewPager;
 import gr.auth.databases.flavours.R;
+import gr.auth.databases.flavours.activities.restaurant.AddRestaurantActivity;
 import gr.auth.databases.flavours.activities.main.fragments.MainListFragment;
 import gr.auth.databases.flavours.activities.main.fragments.MainMapFragment;
 import gr.auth.databases.flavours.base.BaseActivity;
 
 public class MainActivity extends BaseActivity {
     private static final int NUM_PAGES = 2;
+
     private ViewPager viewPager;
     private MenuItem menuMapItem;
 
@@ -34,7 +38,6 @@ public class MainActivity extends BaseActivity {
         actionbar.setDisplayHomeAsUpEnabled(true);
         actionbar.setHomeAsUpIndicator(R.drawable.ic_menu_black_24dp);
 
-
         createDrawer();
 
         viewPager = findViewById(R.id.main_pager);
@@ -58,16 +61,26 @@ public class MainActivity extends BaseActivity {
             }
         });
 
+        findViewById(R.id.main_fab).setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Intent intent = new Intent(view.getContext(), AddRestaurantActivity.class);
+                startActivity(intent);
+            }
+        });
+
         PagerAdapter pagerAdapter = new MainPagerAdapter(getSupportFragmentManager());
         viewPager.setAdapter(pagerAdapter);
     }
 
     @Override
     public void onBackPressed() {
-        if (viewPager.getCurrentItem() == 0) {
-            super.onBackPressed();
-        } else {
+        if (drawer.isDrawerOpen()) {
+            drawer.closeDrawer();
+        } else if (viewPager.getCurrentItem() == 1) {
             viewPager.setCurrentItem(0);
+        } else {
+            super.onBackPressed();
         }
     }
 

UI/AndroidApp/flavoursWithoutBorders/app/src/main/java/gr/auth/databases/flavours/activities/restaurant/AddRestaurantActivity.java

@@ -0,0 +1,49 @@
+package gr.auth.databases.flavours.activities.restaurant;
+
+import android.os.Bundle;
+import android.view.MenuItem;
+
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.widget.Toolbar;
+import gr.auth.databases.flavours.R;
+import gr.auth.databases.flavours.base.BaseActivity;
+
+public class AddRestaurantActivity extends BaseActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        Toolbar toolbar = findViewById(R.id.main_toolbar);
+        toolbar.setTitle("Add Restaurant");
+        setSupportActionBar(toolbar);
+        ActionBar actionbar = getSupportActionBar();
+        actionbar.setDisplayHomeAsUpEnabled(true);
+        actionbar.setHomeAsUpIndicator(R.drawable.ic_menu_black_24dp);
+
+        createDrawer();
+    }
+
+    @Override
+    public void onBackPressed() {
+        if (drawer.isDrawerOpen()) {
+            drawer.closeDrawer();
+        } else {
+            super.onBackPressed();
+        }
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        int id = item.getItemId();
+
+        if (id == android.R.id.home) {
+            drawer.openDrawer();
+            return true;
+        }
+
+        return super.onOptionsItemSelected(item);
+    }
+
+}

UI/AndroidApp/flavoursWithoutBorders/app/src/main/java/gr/auth/databases/flavours/activities/restaurant/RestaurantActivity.java

@@ -0,0 +1,15 @@
+package gr.auth.databases.flavours.activities.restaurant;
+
+import gr.auth.databases.flavours.R;
+import gr.auth.databases.flavours.base.BaseActivity;
+
+import android.os.Bundle;
+
+public class RestaurantActivity extends BaseActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_restaurant);
+    }
+}

UI/AndroidApp/flavoursWithoutBorders/app/src/main/java/gr/auth/databases/flavours/utils/ScrollAwareFABBehavior.java

@@ -0,0 +1,63 @@
+package gr.auth.databases.flavours.utils;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.View;
+
+import com.google.android.material.floatingactionbutton.FloatingActionButton;
+import com.google.android.material.snackbar.Snackbar;
+
+import androidx.annotation.NonNull;
+import androidx.coordinatorlayout.widget.CoordinatorLayout;
+import androidx.core.view.ViewCompat;
+
+@SuppressWarnings("unused")
+public class ScrollAwareFABBehavior extends CoordinatorLayout.Behavior<FloatingActionButton> {
+
+    public ScrollAwareFABBehavior(Context context, AttributeSet attrs) {
+        super();
+    }
+
+    @Override
+    public boolean onStartNestedScroll(@NonNull final CoordinatorLayout coordinatorLayout,
+                                       @NonNull final FloatingActionButton child,
+                                       @NonNull final View directTargetChild, @NonNull final View target,
+                                       final int nestedScrollAxes, int type) {
+        return nestedScrollAxes == ViewCompat.SCROLL_AXIS_VERTICAL;
+    }
+
+    @Override
+    public void onNestedScroll(@NonNull final CoordinatorLayout coordinatorLayout,
+                               @NonNull final FloatingActionButton child,
+                               @NonNull final View target, final int dxConsumed, final int dyConsumed,
+                               final int dxUnconsumed, final int dyUnconsumed, int type) {
+        super.onNestedScroll(coordinatorLayout, child, target, dxConsumed, dyConsumed, dxUnconsumed,
+                dyUnconsumed, type);
+        if (dyConsumed > 0 || (!target.canScrollVertically(-1) && dyConsumed == 0 && dyUnconsumed > 50)) {
+            child.hide(new FloatingActionButton.OnVisibilityChangedListener() {
+                @Override
+                public void onHidden(FloatingActionButton fab) {
+                    super.onHidden(fab);
+                    fab.setVisibility(View.INVISIBLE);
+                }
+            });
+        } else if (dyConsumed < 0 || !target.canScrollVertically(-1) && dyUnconsumed < -50) {
+            child.show();
+            child.setVisibility(View.VISIBLE);
+        }
+    }
+
+    @Override
+    public boolean layoutDependsOn(@NonNull CoordinatorLayout parent,
+                                   @NonNull FloatingActionButton child, @NonNull View dependency) {
+        return dependency instanceof Snackbar.SnackbarLayout;
+    }
+
+    @Override
+    public boolean onDependentViewChanged(@NonNull CoordinatorLayout parent,
+                                          @NonNull FloatingActionButton child, @NonNull View dependency) {
+        float translationY = Math.min(0, dependency.getTranslationY() - dependency.getHeight());
+        child.setTranslationY(translationY);
+        return true;
+    }
+}

UI/AndroidApp/flavoursWithoutBorders/app/src/main/res/layout/activity_add_restaurant.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@android:color/background_light"
+    android:fitsSystemWindows="true">
+
+    <com.google.android.material.appbar.AppBarLayout
+        android:id="@+id/add_restaurant_appbar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:theme="@style/Theme.AppCompat.Light">
+
+        <androidx.appcompat.widget.Toolbar
+            android:id="@+id/add_restaurant_toolbar"
+            android:layout_width="match_parent"
+            android:layout_height="?attr/actionBarSize"
+            android:background="?attr/colorPrimary"
+            app:popupTheme="@style/Theme.AppCompat.Light" />
+    </com.google.android.material.appbar.AppBarLayout>
+
+</androidx.coordinatorlayout.widget.CoordinatorLayout>

UI/AndroidApp/flavoursWithoutBorders/app/src/main/res/layout/activity_main.xml

@@ -29,8 +29,12 @@
         app:layout_behavior="@string/appbar_scrolling_view_behavior" />
 
     <com.google.android.material.floatingactionbutton.FloatingActionButton
+        android:id="@+id/main_fab"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        app:layout_anchor="@id/main_appbar"
-        app:layout_anchorGravity="bottom|right|end" />
+        android:layout_gravity="bottom|end"
+        android:layout_margin="16dp"
+        android:src="@drawable/ic_add_white_24dp"
+        app:fabSize="mini"
+        app:layout_behavior="gr.auth.databases.flavours.utils.ScrollAwareFABBehavior" />
 </androidx.coordinatorlayout.widget.CoordinatorLayout>

UI/AndroidApp/flavoursWithoutBorders/app/src/main/res/layout/activity_restaurant.xml

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@android:color/background_light"
+    android:fitsSystemWindows="true">
+
+    <com.google.android.material.appbar.AppBarLayout
+        android:id="@+id/restaurant_appbar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:theme="@style/Theme.AppCompat.Light">
+
+        <androidx.appcompat.widget.Toolbar
+            android:id="@+id/restaurant_toolbar"
+            android:layout_width="match_parent"
+            android:layout_height="?attr/actionBarSize"
+            android:background="?attr/colorPrimary"
+            app:popupTheme="@style/Theme.AppCompat.Light" />
+    </com.google.android.material.appbar.AppBarLayout>
+
+    <androidx.core.widget.NestedScrollView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        app:layout_behavior="@string/appbar_scrolling_view_behavior">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content">
+
+            <TextView
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content" />
+        </LinearLayout>
+    </androidx.core.widget.NestedScrollView>
+</androidx.coordinatorlayout.widget.CoordinatorLayout>

UI/AndroidApp/flavoursWithoutBorders/app/src/main/res/layout/fragment_main_list.xml

@@ -1,8 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
 <androidx.recyclerview.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:id="@+id/main_recycler"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:layout_marginStart="12dp"
     android:layout_marginEnd="12dp"
-    android:orientation="vertical" />
+    android:orientation="vertical"
+    app:layout_behavior="@string/appbar_scrolling_view_behavior" />