added navigation bottom drawer

android_app/app/src/main/java/com/health/openscale/gui/MainActivity.java

@@ -16,6 +16,7 @@
 
 package com.health.openscale.gui;
 
+import android.annotation.SuppressLint;
 import android.app.AlertDialog;
 import android.bluetooth.BluetoothAdapter;
 import android.bluetooth.BluetoothManager;
@@ -31,6 +32,10 @@ import android.os.Bundle;
 import android.os.Handler;
 import android.os.Message;
 import android.preference.PreferenceManager;
+import android.support.annotation.NonNull;
+import android.support.design.internal.BottomNavigationItemView;
+import android.support.design.internal.BottomNavigationMenuView;
+import android.support.design.widget.BottomNavigationView;
 import android.support.design.widget.NavigationView;
 import android.support.v4.app.Fragment;
 import android.support.v4.app.FragmentManager;
@@ -57,6 +62,8 @@ import com.health.openscale.gui.fragments.OverviewFragment;
 import com.health.openscale.gui.fragments.StatisticsFragment;
 import com.health.openscale.gui.fragments.TableFragment;
 
+import java.lang.reflect.Field;
+
 import cat.ereza.customactivityoncrash.config.CaocConfig;
 
 
@@ -69,6 +76,7 @@ public class MainActivity extends AppCompatActivity {
     private DrawerLayout drawerLayout;
     private Toolbar toolbar;
     private NavigationView navDrawer;
+    private BottomNavigationView navBottomDrawer;
     private ActionBarDrawerToggle drawerToggle;
 
     @Override
@@ -100,6 +108,17 @@ public class MainActivity extends AppCompatActivity {
         // Find our drawer view
         navDrawer = (NavigationView) findViewById(R.id.navigation_view);
 
+        navBottomDrawer = (BottomNavigationView) findViewById(R.id.navigation_bottom_view);
+        navBottomDrawer.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener() {
+            @Override
+            public boolean onNavigationItemSelected(@NonNull MenuItem item) {
+                selectDrawerItem(item.getItemId());
+                return true;
+            }
+        });
+
+        disableShiftMode(navBottomDrawer);
+
         //Create Drawer Toggle
         drawerToggle = new ActionBarDrawerToggle(this, drawerLayout, R.string.open_drawer, R.string.close_drawer){
             @Override
@@ -122,6 +141,8 @@ public class MainActivity extends AppCompatActivity {
 
         selectDrawerItem(prefs.getInt("lastFragmentId", R.id.nav_overview));
 
+        navBottomDrawer.setSelectedItemId(prefs.getInt("lastFragmentId", R.id.nav_overview));
+
         if (prefs.getBoolean("firstStart", true)) {
             Intent intent = new Intent(this, UserSettingsActivity.class);
             intent.putExtra(UserSettingsActivity.EXTRA_MODE, UserSettingsActivity.ADD_USER_REQUEST);
@@ -219,8 +240,7 @@ public class MainActivity extends AppCompatActivity {
                     @Override
                     public boolean onNavigationItemSelected(MenuItem menuItem) {
                         selectDrawerItem(menuItem.getItemId());
-                        // Highlight the selected item has been done by NavigationView
-                        menuItem.setChecked(true);
+                        navBottomDrawer.setSelectedItemId(menuItem.getItemId());
                         return true;
 
                     }
@@ -282,6 +302,9 @@ public class MainActivity extends AppCompatActivity {
         // Set action bar title
         setTitle(fragmentTitle);
 
+        // Set checked item
+        navDrawer.setCheckedItem(menuItemId);
+
         // Close the navigation drawer
         drawerLayout.closeDrawers();
     }
@@ -432,4 +455,28 @@ public class MainActivity extends AppCompatActivity {
         bluetoothStatusIcon = iconRessource;
         bluetoothStatus.setIcon(getResources().getDrawable(bluetoothStatusIcon));
     }
+
+    @SuppressLint("RestrictedApi")
+    public static void disableShiftMode(BottomNavigationView view) {
+        BottomNavigationMenuView menuView = (BottomNavigationMenuView) view.getChildAt(0);
+        try {
+            Field shiftingMode = menuView.getClass().getDeclaredField("mShiftingMode");
+            shiftingMode.setAccessible(true);
+            shiftingMode.setBoolean(menuView, false);
+            shiftingMode.setAccessible(false);
+            for (int i = 0; i < menuView.getChildCount(); i++) {
+                BottomNavigationItemView item = (BottomNavigationItemView) menuView.getChildAt(i);
+                //noinspection RestrictedApi
+                item.setShiftingMode(false);
+                item.setPadding(0, 15, 0, 0);
+                // set once again checked value, so view will be updated
+                //noinspection RestrictedApi
+                item.setChecked(item.getItemData().isChecked());
+            }
+        } catch (NoSuchFieldException e) {
+            Log.e("BNVHelper", "Unable to get shift mode field", e);
+        } catch (IllegalAccessException e) {
+            Log.e("BNVHelper", "Unable to change value of shift mode", e);
+        }
+    }
 }

android_app/app/src/main/res/drawable/nav_item_colors.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_checked="true" android:color="@android:color/white" />
+    <item android:color="#80FFFFFF"  />
+</selector>

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

@@ -1,45 +1,62 @@
-<android.support.v4.widget.DrawerLayout
+<RelativeLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:id="@+id/drawer_layout"
+    xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
-    <!-- This LinearLayout represents the contents of the screen  -->
-    <LinearLayout
+    <android.support.v4.widget.DrawerLayout
+        android:id="@+id/drawer_layout"
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:orientation="vertical">
+        android:layout_height="match_parent">
 
-        <!-- The ActionBar displayed at the top -->
-        <android.support.v7.widget.Toolbar
-            android:id="@+id/toolbar"
+        <!-- This LinearLayout represents the contents of the screen  -->
+        <LinearLayout
             android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:fitsSystemWindows="true"
-            android:minHeight="?attr/actionBarSize"
-            app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
-            android:background="?attr/colorPrimaryDark">
-        </android.support.v7.widget.Toolbar>
+            android:layout_height="match_parent"
+            android:weightSum="100"
+            android:orientation="vertical">
 
-        <!-- action_menumain content view where fragments are loaded -->
+            <!-- The ActionBar displayed at the top -->
+            <android.support.v7.widget.Toolbar
+                android:id="@+id/toolbar"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:fitsSystemWindows="true"
+                android:minHeight="?attr/actionBarSize"
+                app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
+                android:background="?attr/colorPrimaryDark">
+            </android.support.v7.widget.Toolbar>
 
-        <FrameLayout
-            android:id="@+id/fragment_content"
-            app:layout_behavior="@string/appbar_scrolling_view_behavior"
-            android:layout_width="match_parent"
-            android:layout_height="match_parent" />
-    </LinearLayout>
+            <!-- action_menumain content view where fragments are loaded -->
 
+            <FrameLayout
+                android:id="@+id/fragment_content"
+                app:layout_behavior="@string/appbar_scrolling_view_behavior"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_weight="90"/>
 
-    <!-- The navigation drawer that comes from the left -->
-    <!-- Note that `android:layout_gravity` needs to be set to 'start' -->
-    <android.support.design.widget.NavigationView
-        android:id="@+id/navigation_view"
-        android:layout_width="wrap_content"
-        android:layout_height="match_parent"
-        android:layout_gravity="start"
-        app:headerLayout="@layout/drawer_header"
-        app:menu="@menu/drawer_view" />
+            <android.support.design.widget.BottomNavigationView
+                android:id="@+id/navigation_bottom_view"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_weight="10"
+                android:background="?attr/colorPrimaryDark"
+                app:itemIconTint="@drawable/nav_item_colors"
+                app:itemTextColor="@android:color/transparent"
+                app:menu="@menu/drawer_bottom_view" />
+        </LinearLayout>
 
-</android.support.v4.widget.DrawerLayout>
+        <!-- The navigation drawer that comes from the left -->
+        <!-- Note that `android:layout_gravity` needs to be set to 'start' -->
+        <android.support.design.widget.NavigationView
+            android:id="@+id/navigation_view"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:layout_gravity="start"
+            app:headerLayout="@layout/drawer_header"
+            app:menu="@menu/drawer_view" />
+
+    </android.support.v4.widget.DrawerLayout>
+</RelativeLayout>

android_app/app/src/main/res/menu/drawer_bottom_view.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+    <group android:id="@+id/menu_top"
+           android:checkableBehavior="single">
+
+        <item
+            android:id="@+id/nav_overview"
+            android:icon="@drawable/ic_preferences_home"
+            android:title="@string/title_overview" />
+
+        <item
+            android:id="@+id/nav_graph"
+            android:icon="@drawable/ic_preferences_graph"
+            android:title="@string/title_graph" />
+
+        <item
+            android:id="@+id/nav_table"
+            android:icon="@drawable/ic_preferences_table"
+            android:title="@string/title_table" />
+
+        <item
+            android:id="@+id/nav_statistic"
+            android:icon="@drawable/ic_preferences_statistics"
+            android:title="@string/title_statistics" />
+    </group>
+    </menu>