Optimized NavigationBar.

Added BottomNavigationView.
Removed FloatingActionButton.

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

@@ -4,7 +4,8 @@
     android:id="@+id/drawer_layout"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:fitsSystemWindows="true"
+    android:fitsSystemWindows="false"
+    android:background="?attr/app_background"
     tools:openDrawer="start">
 
     <include

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

@@ -1,6 +1,19 @@
 <?xml version="1.0" encoding="utf-8"?>
 <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:background="?attr/windowSplashScreenBackground"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
+    <ImageView
+        android:id="@+id/imageView"
+        android:layout_width="288dp"
+        android:layout_height="288dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        android:src="@drawable/ic_launcher"
+        android:contentDescription="LOGO" />
+
 </androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -2,6 +2,7 @@
 <androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/main_page"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     tools:context=".MainActivity">
@@ -22,13 +23,4 @@
 
     <include layout="@layout/content_main" />
 
-    <com.google.android.material.floatingactionbutton.FloatingActionButton
-        android:id="@+id/fab"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_gravity="bottom|end"
-        android:layout_margin="@dimen/fab_margin"
-        app:srcCompat="@android:drawable/ic_dialog_email"
-        android:contentDescription="@string/fab" />
-
 </androidx.coordinatorlayout.widget.CoordinatorLayout>

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

@@ -1,20 +1,31 @@
 <?xml version="1.0" encoding="utf-8"?>
-<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:id="@+id/fragment_home"
+<androidx.constraintlayout.widget.ConstraintLayout 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="?attr/app_background"
-    android:orientation="vertical"
-    tools:context=".ui.home.HomeFragment">
+    android:layout_height="match_parent">
 
-    <LinearLayout
-        android:id="@+id/fold_layouts_linear_layout"
+    <androidx.viewpager2.widget.ViewPager2
+        android:id="@+id/bottom_nav_view_pager"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        app:layout_constraintBottom_toTopOf="@+id/bottom_navigation_view"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"/>
+
+
+    <com.google.android.material.bottomnavigation.BottomNavigationView
+        android:id="@+id/bottom_navigation_view"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:paddingTop="10dp"
-        android:paddingBottom="10dp"
-        android:orientation="vertical">
-    </LinearLayout>
+        app:labelVisibilityMode="selected"
+        app:itemTextColor="?attr/app_on_theme"
+        app:itemIconTint="?attr/app_on_theme"
+        android:background="?attr/app_theme"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/bottom_nav_view_pager"
+        app:menu="@menu/bottom_nav_menu" />
 
-</ScrollView>
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/fragment_home_tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="?attr/app_background"
+    android:orientation="vertical"
+    tools:context=".ui.home.HomeFragment">
+
+    <LinearLayout
+        android:id="@+id/fold_layouts_linear_layout"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:paddingTop="10dp"
+        android:paddingBottom="10dp" />
+</ScrollView>

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

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/fragment_home_tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="?attr/app_background"
+    android:orientation="vertical"
+    tools:context=".ui.home.tools.ToolsFragment">
+
+    <LinearLayout
+        android:id="@+id/fold_layouts_linear_layout"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:paddingTop="10dp"
+        android:paddingBottom="10dp" />
+</ScrollView>

app/src/main/res/menu/bottom_nav_menu.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+    <item
+        android:id="@+id/nav_home_tools"
+        android:icon="@drawable/ic_menu_home"
+        android:orderInCategory="0"
+        android:title="@string/menu_home_tools" />
+
+    <item
+        android:id="@+id/nav_home_fav"
+        android:icon="@drawable/ic_menu_home"
+        android:orderInCategory="1"
+        android:title="@string/menu_home_fav" />
+
+</menu>

app/src/main/res/values-zh-rCN/strings.xml

@@ -9,6 +9,8 @@
     <string name="action_settings">设置</string>
 
     <string name="menu_home">主页</string>
+    <string name="menu_home_tools">工具</string>
+    <string name="menu_home_fav">收藏</string>
     <string name="menu_theme">主题</string>
     <string name="menu_setting">设置</string>
     <string name="menu_about">关于</string>
@@ -18,7 +20,6 @@
     <string name="shortcutLongLabel">氧工具</string>
     <string name="shortcutShortLabel">氧工具</string>
 
-    <string name="fab">浮动按钮</string>
     <string name="init_tools_failed">初始化工具集失败</string>
     <string name="activity_class_not_found">无法加载工具，该工具可能已损坏</string>
 </resources>

app/src/main/res/values-zh-rHK/strings.xml

@@ -9,6 +9,8 @@
     <string name="action_settings">设置</string>
 
     <string name="menu_home">主页</string>
+    <string name="menu_home_tools">工具</string>
+    <string name="menu_home_fav">收藏</string>
     <string name="menu_theme">主题</string>
     <string name="menu_setting">设置</string>
     <string name="menu_about">关于</string>
@@ -18,7 +20,6 @@
     <string name="shortcutLongLabel">氧工具</string>
     <string name="shortcutShortLabel">氧工具</string>
 
-    <string name="fab">浮动按钮</string>
     <string name="init_tools_failed">初始化工具集失败</string>
     <string name="activity_class_not_found">无法加载工具，该工具可能已损坏</string>
 </resources>

app/src/main/res/values-zh-rTW/strings.xml

@@ -9,6 +9,8 @@
     <string name="action_settings">设置</string>
 
     <string name="menu_home">主页</string>
+    <string name="menu_home_tools">工具</string>
+    <string name="menu_home_fav">收藏</string>
     <string name="menu_theme">主题</string>
     <string name="menu_setting">设置</string>
     <string name="menu_about">关于</string>
@@ -18,7 +20,6 @@
     <string name="shortcutLongLabel">氧工具</string>
     <string name="shortcutShortLabel">氧工具</string>
 
-    <string name="fab">浮动按钮</string>
     <string name="init_tools_failed">初始化工具集失败</string>
     <string name="activity_class_not_found">无法加载工具，该工具可能已损坏</string>
 </resources>

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

@@ -5,5 +5,4 @@
     <dimen name="activity_vertical_margin">16dp</dimen>
     <dimen name="nav_header_vertical_spacing">8dp</dimen>
     <dimen name="nav_header_height">176dp</dimen>
-    <dimen name="fab_margin">16dp</dimen>
 </resources>

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

@@ -9,6 +9,8 @@
     <string name="action_settings">Settings</string>
 
     <string name="menu_home">Home</string>
+    <string name="menu_home_tools">Tools</string>
+    <string name="menu_home_fav">Favorite</string>
     <string name="menu_theme">Theme</string>
     <string name="menu_setting">Setting</string>
     <string name="menu_about">About</string>
@@ -20,7 +22,6 @@
 
     <string name="arrow_icon" translatable="false"><![CDATA[>]]></string>
 
-    <string name="fab">Fab</string>
     <string name="init_tools_failed">Failed to initialize tools</string>
     <string name="activity_class_not_found">Can not load tool, it may be damaged</string>
 </resources>

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

@@ -15,6 +15,7 @@
         <!-- Customize your theme here. -->
         <item name="windowActionBar">false</item>
         <item name="windowNoTitle">true</item>
+        <item name="android:windowTranslucentNavigation">true</item>
 
         <item name="app_theme">@color/default_app_theme</item>
         <item name="app_on_theme">@color/default_app_on_theme</item>
@@ -31,15 +32,19 @@
         <item name="tools_button_ripple">@color/default_tools_button_ripple</item>
     </style>
 
+    <style name="Theme.OxygenToolbox.Full" parent="Theme.OxygenToolbox.Default">
+        <item name="android:windowTranslucentStatus">true</item>
+    </style>
+
+    <style name="Theme.OxygenToolbox.SplashActivity" parent="Theme.OxygenToolbox.Full">
+
+    </style>
+
     <style name="Theme.OxygenToolbox.Starting" parent="Theme.SplashScreen">
         <item name="windowSplashScreenBackground">@color/default_app_background</item>
         <item name="windowSplashScreenAnimatedIcon">@drawable/ic_launcher</item>
         <item name="windowSplashScreenAnimationDuration">0</item>
-        <item name="postSplashScreenTheme">@style/Theme.OxygenToolbox.Default</item>
-    </style>
-
-    <style name="Theme.OxygenToolbox.Full" parent="Theme.OxygenToolbox.Default">
-        <item name="android:windowFullscreen">true</item>
+        <item name="postSplashScreenTheme">@style/Theme.OxygenToolbox.SplashActivity</item>
     </style>
 
     <style name="Theme.OxygenToolbox.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />