Optimized NavigationBar.

Added BottomNavigationView.
Removed FloatingActionButton.

.idea/deploymentTargetDropDown.xml

@@ -1,6 +1,18 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="deploymentTargetDropDown">
+    <runningDeviceTargetSelectedWithDropDown>
+      <Target>
+        <type value="RUNNING_DEVICE_TARGET" />
+        <deviceKey>
+          <Key>
+            <type value="SERIAL_NUMBER" />
+            <value value="192.168.101.108:8888" />
+          </Key>
+        </deviceKey>
+      </Target>
+    </runningDeviceTargetSelectedWithDropDown>
+    <timeTargetWasSelectedWithDropDown value="2022-04-13T09:35:09.839655300Z" />
     <runningDeviceTargetsSelectedWithDialog>
       <Target>
         <type value="RUNNING_DEVICE_TARGET" />

.idea/misc.xml

@@ -41,12 +41,17 @@
         <entry key="..\:/.workspace-android/Project-ToolBox/OxygenToolbox/app/src/main/res/layout/fragment_about.xml" value="0.1" />
         <entry key="..\:/.workspace-android/Project-ToolBox/OxygenToolbox/app/src/main/res/layout/fragment_gallery.xml" value="0.1" />
         <entry key="..\:/.workspace-android/Project-ToolBox/OxygenToolbox/app/src/main/res/layout/fragment_home.xml" value="0.1" />
+        <entry key="..\:/.workspace-android/Project-ToolBox/OxygenToolbox/app/src/main/res/layout/fragment_home_alltools.xml" value="0.297008547008547" />
+        <entry key="..\:/.workspace-android/Project-ToolBox/OxygenToolbox/app/src/main/res/layout/fragment_home_fav.xml" value="0.1" />
+        <entry key="..\:/.workspace-android/Project-ToolBox/OxygenToolbox/app/src/main/res/layout/fragment_home_tools.xml" value="0.1" />
         <entry key="..\:/.workspace-android/Project-ToolBox/OxygenToolbox/app/src/main/res/layout/fragment_slideshow.xml" value="0.1" />
         <entry key="..\:/.workspace-android/Project-ToolBox/OxygenToolbox/app/src/main/res/layout/fragment_theme.xml" value="0.1" />
+        <entry key="..\:/.workspace-android/Project-ToolBox/OxygenToolbox/app/src/main/res/layout/fragment_tools.xml" value="0.33" />
         <entry key="..\:/.workspace-android/Project-ToolBox/OxygenToolbox/app/src/main/res/layout/layout_item.xml" value="0.1" />
         <entry key="..\:/.workspace-android/Project-ToolBox/OxygenToolbox/app/src/main/res/layout/nav_header_main.xml" value="0.1" />
         <entry key="..\:/.workspace-android/Project-ToolBox/OxygenToolbox/app/src/main/res/layout/tool_button.xml" value="0.3619791666666667" />
         <entry key="..\:/.workspace-android/Project-ToolBox/OxygenToolbox/app/src/main/res/menu/activity_main_drawer.xml" value="0.1" />
+        <entry key="..\:/.workspace-android/Project-ToolBox/OxygenToolbox/app/src/main/res/menu/bottom_nav_menu.xml" value="0.297008547008547" />
         <entry key="..\:/.workspace-android/Project-ToolBox/OxygenToolbox/app/src/main/res/menu/main.xml" value="0.1" />
         <entry key="..\:/.workspace-android/Project-ToolBox/OxygenToolbox/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml" value="0.11944444444444445" />
         <entry key="..\:/.workspace-android/Project-ToolBox/OxygenToolbox/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml" value="0.11944444444444445" />

app/src/main/AndroidManifest.xml

@@ -10,7 +10,7 @@
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
-        android:theme="@style/Theme.OxygenToolbox.Starting">
+        android:theme="@style/Theme.OxygenToolbox.Default">
         <activity
             android:name=".SplashActivity"
             android:exported="true"

app/src/main/java/com/fatapp/oxygentoolbox/MainActivity.java

@@ -1,14 +1,13 @@
 package com.fatapp.oxygentoolbox;
 
 import android.os.Bundle;
-import android.view.View;
 import android.view.Menu;
 
 import com.fatapp.oxygentoolbox.util.ResourceUtil;
 import com.fatapp.oxygentoolbox.util.VibratorController;
-import com.google.android.material.floatingactionbutton.FloatingActionButton;
 import com.google.android.material.navigation.NavigationView;
 
+import androidx.coordinatorlayout.widget.CoordinatorLayout;
 import androidx.navigation.NavController;
 import androidx.navigation.Navigation;
 import androidx.navigation.fragment.NavHostFragment;
@@ -26,14 +25,15 @@ public class MainActivity extends AppCompatActivity {
 
     private AppBarConfiguration mAppBarConfiguration;
 
-    private Toolbar toolbar;
-    private FloatingActionButton fab;
     private DrawerLayout drawer;
+    private CoordinatorLayout mainPage;
+    private Toolbar toolbar;
     private NavigationView navigationView;
+
     private void initView() {
-        toolbar = findViewById(R.id.toolbar);
-        fab = findViewById(R.id.fab);
         drawer = findViewById(R.id.drawer_layout);
+        mainPage = findViewById(R.id.main_page);
+        toolbar = findViewById(R.id.toolbar);
         navigationView = findViewById(R.id.nav_view);
         mainActivity = this;
     }
@@ -53,21 +53,15 @@ public class MainActivity extends AppCompatActivity {
     }
 
     private void initLayout() {
+        mainPage.setPadding(0, ResourceUtil.getStatusBarHeight(getWindow(), getApplicationContext()), 0, 0);
+
         setSupportActionBar(toolbar);
-        fab.setOnClickListener(view -> {
-            /*Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
-                    .setAction("Action", null).show();*/
-        });
         navigationView.inflateHeaderView(R.layout.nav_header_main);
         navigationView.inflateMenu(R.menu.activity_main_drawer);
         navigationView.addOnLayoutChangeListener((v, left, top, right, bottom, oldLeft, oldTop, oldRight, oldBottom) -> {
-            if (navigationView.getMenu().getItem(0).isChecked()) {
+            drawer.setDrawerLockMode(navigationView.getMenu().getItem(0).isChecked()
-                drawer.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED);
+                    ? DrawerLayout.LOCK_MODE_UNLOCKED
-                fab.setVisibility(View.VISIBLE);
+                    : DrawerLayout.LOCK_MODE_LOCKED_CLOSED);
-            } else {
-                drawer.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);
-                fab.setVisibility(View.GONE);
-            }
         });
         navigationView.getMenu().getItem(4).setOnMenuItemClickListener(item -> {
             finish();

app/src/main/java/com/fatapp/oxygentoolbox/SplashActivity.java

@@ -17,8 +17,17 @@ public class SplashActivity extends AppCompatActivity {
 
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_splash);
-
+        new Thread() {
+            @Override
+            public void run() {
+                try {
+                    sleep(0);
+                } catch (InterruptedException e) {
+                    e.printStackTrace();
+                }
                 startActivity(new Intent(getApplicationContext(), MainActivity.class));
                 finish();
             }
+        }.start();
+    }
 }

app/src/main/java/com/fatapp/oxygentoolbox/ui/about/AboutFragment.java

@@ -20,8 +20,7 @@ public class AboutFragment extends Fragment {
 
     public View onCreateView(@NonNull LayoutInflater inflater,
                              ViewGroup container, Bundle savedInstanceState) {
-        aboutViewModel =
+        aboutViewModel = new ViewModelProvider(this).get(AboutViewModel.class);
-                new ViewModelProvider(this).get(AboutViewModel.class);
         View root = inflater.inflate(R.layout.fragment_about, container, false);
         final TextView textView = root.findViewById(R.id.text_about);
         aboutViewModel.getText().observe(getViewLifecycleOwner(), new Observer<String>() {

app/src/main/java/com/fatapp/oxygentoolbox/ui/home/HomeFragment.java

@@ -1,30 +1,20 @@
 package com.fatapp.oxygentoolbox.ui.home;
 
-import android.annotation.SuppressLint;
-import android.graphics.Typeface;
 import android.os.Bundle;
 import android.view.LayoutInflater;
-import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.Button;
-import android.widget.LinearLayout;
-import android.widget.TextView;
-import android.widget.Toast;
 
 import androidx.annotation.NonNull;
 import androidx.fragment.app.Fragment;
 import androidx.lifecycle.ViewModelProvider;
+import androidx.viewpager2.adapter.FragmentStateAdapter;
+import androidx.viewpager2.widget.ViewPager2;
 
 import com.fatapp.oxygentoolbox.R;
-import com.fatapp.oxygentoolbox.layout.FoldLayout;
+import com.fatapp.oxygentoolbox.ui.home.fav.FavFragment;
-import com.fatapp.oxygentoolbox.util.ToolsLauncher;
+import com.fatapp.oxygentoolbox.ui.home.tools.ToolsFragment;
-import com.fatapp.oxygentoolbox.util.ToolsList;
+import com.google.android.material.bottomnavigation.BottomNavigationView;
-import com.fatapp.oxygentoolbox.util.VibratorController;
-
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.List;
 
 public class HomeFragment extends Fragment {
 
@@ -32,109 +22,43 @@ public class HomeFragment extends Fragment {
 
     private HomeViewModel homeViewModel;
 
-    private LinearLayout foldLayoutsLinearLayout;
-
     public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
-        homeViewModel =
+        homeViewModel = new ViewModelProvider(this).get(HomeViewModel.class);
-                new ViewModelProvider(this).get(HomeViewModel.class);
         root = inflater.inflate(R.layout.fragment_home, container, false);
 
-        //init
+        ViewPager2 bottomNavViewPager = root.findViewById(R.id.bottom_nav_view_pager);
-        initView();
+        BottomNavigationView bottomNavigationView = root.findViewById(R.id.bottom_navigation_view);
-        initLayout();
+
+        bottomNavViewPager.registerOnPageChangeCallback(new ViewPager2.OnPageChangeCallback(){
+            @Override
+            public void onPageSelected(int position) {
+                bottomNavigationView.getMenu().getItem(position).setChecked(true);
+            }
+        });
+        bottomNavigationView.setOnItemSelectedListener(item -> {
+            bottomNavViewPager.setCurrentItem(item.getOrder());
+            return true;
+        });
+        bottomNavViewPager.setAdapter(new FragmentStateAdapter(this) {
+            @NonNull
+            @Override
+            public Fragment createFragment(int position) {
+                switch (position) {
+                    case 0:
+                        return new ToolsFragment();
+                    case 1:
+                        return new FavFragment();
+                }
+                return null;
+            }
+
+            @Override
+            public int getItemCount() {
+                return 2;
+            }
+        });
 
         return root;
     }
 
-    private void initView() {
-        foldLayoutsLinearLayout = root.findViewById(R.id.fold_layouts_linear_layout);
-    }
-
-    private void initLayout() {
-        initFoldLayout();
-    }
-
-    @SuppressLint("ClickableViewAccessibility")
-    private void initFoldLayout() {
-        try {
-            ToolsList.init(getResources().getAssets().open("json/BasicTools.json"));
-        } catch (IOException e) {
-            e.printStackTrace();
-            Toast.makeText(getContext(), R.string.init_tools_failed, Toast.LENGTH_LONG).show();
-            return;
-        }
-
-        for (ToolsList.Tool tool : ToolsList.getToolList()) {
-            View foldLayoutBodyLayout = getLayoutInflater().inflate(R.layout.fold_layout_body, null);
-            ViewGroup autoLinefeedLayout = foldLayoutBodyLayout.findViewById(R.id.auto_linefeed_layout);
-
-            for (ToolsList.Button button : tool.getButtonList()) {
-                View toolButtonLayout = getLayoutInflater().inflate(R.layout.tool_button, null);
-                Button toolButton = toolButtonLayout.findViewById(R.id.tool_button);
-                toolButton.setText(button.getText());
-
-                toolButton.setOnClickListener(v -> ToolsLauncher.launch(getContext(), button.getActivity()));
-
-                toolButton.setOnTouchListener((v, event) -> {
-                    if (event.getAction()== MotionEvent.ACTION_DOWN) {
-                        v.animate().translationZ(8f).setDuration(100L);
-                    }
-                    if (event.getAction() == MotionEvent.ACTION_UP) {
-                        v.animate().translationZ(0).setDuration(100L);
-                    }
-                    return false;
-                });
-
-                toolButton.setOnLongClickListener(v -> {
-                    v.animate().translationZ(0).setDuration(100L);
-                    VibratorController.vibrate(1);
-                    return false;
-                });
-
-                autoLinefeedLayout.addView(toolButtonLayout);
-            }
-
-            List<View> viewList = new ArrayList<>();
-            viewList.add(foldLayoutBodyLayout);
-
-            View foldLayoutHead = getLayoutInflater().inflate(R.layout.fold_layout, null);
-            FoldLayout foldLayout = foldLayoutHead.findViewById(R.id.fold_layout);
-            ((TextView) foldLayout.findViewById(R.id.fold_layout_text_view)).setText(tool.getFoldLayoutTitle());
-
-            TextView foldLayoutIcon = foldLayout.findViewById(R.id.fold_layout_icon);
-            foldLayoutIcon.setTypeface(Typeface.createFromAsset(requireContext().getAssets(), tool.getFont()));
-            foldLayoutIcon.setText(tool.getIcon());
-
-            foldLayout.addItemView(viewList);
-
-            foldLayoutsLinearLayout.removeAllViews();
-            foldLayoutsLinearLayout.addView(foldLayoutHead);
-        }
-
-/*
-        for (int i = 0; i < 10; i++) {
-            View toolButton = getLayoutInflater().inflate(R.layout.tool_button, null);
-            ((Button) toolButton.findViewById(R.id.tool_button)).setText("Button");
-            toolButton.findViewById(R.id.tool_button).setOnClickListener(v -> {
-                BasicToolsLauncher.launch(0, getContext());
-            });
-
-            View foldLayoutBody = getLayoutInflater().inflate(R.layout.fold_layout_body, null);
-            ViewGroup layout_item_AutoLinefeedLayout = foldLayoutBody.findViewById(R.id.auto_linefeed_layout);
-            layout_item_AutoLinefeedLayout.addView(toolButton);
-
-            List<View> viewList = new ArrayList<>();
-            viewList.add(foldLayoutBody);
-
-            View foldLayoutHead = getLayoutInflater().inflate(R.layout.fold_layout, null);
-            FoldLayout foldLayout = foldLayoutHead.findViewById(R.id.fold_layout);
-            ((TextView) foldLayout.findViewById(R.id.fold_layout_text_view)).setText("FoldLayout_" + i);
-            foldLayout.addItemView(viewList);
-
-            foldLayoutsLinearLayout.addView(foldLayoutHead);
-        }
-*/
-    }
-
-
 }

app/src/main/java/com/fatapp/oxygentoolbox/ui/home/fav/FavFragment.java

@@ -0,0 +1,27 @@
+package com.fatapp.oxygentoolbox.ui.home.fav;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+import androidx.fragment.app.Fragment;
+import androidx.lifecycle.ViewModelProvider;
+
+import com.fatapp.oxygentoolbox.R;
+
+public class FavFragment extends Fragment {
+
+    private View root;
+
+    private FavViewModel favViewModel;
+
+    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        favViewModel = new ViewModelProvider(this).get(FavViewModel.class);
+        root = inflater.inflate(R.layout.fragment_home_fav, container, false);
+
+        return root;
+    }
+
+}

app/src/main/java/com/fatapp/oxygentoolbox/ui/home/fav/FavViewModel.java

@@ -0,0 +1,19 @@
+package com.fatapp.oxygentoolbox.ui.home.fav;
+
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+import androidx.lifecycle.ViewModel;
+
+public class FavViewModel extends ViewModel {
+
+    private MutableLiveData<String> mText;
+
+    public FavViewModel() {
+        mText = new MutableLiveData<>();
+        mText.setValue("This is home fragment");
+    }
+
+    public LiveData<String> getText() {
+        return mText;
+    }
+}

app/src/main/java/com/fatapp/oxygentoolbox/ui/home/tools/ToolsFragment.java

@@ -0,0 +1,136 @@
+package com.fatapp.oxygentoolbox.ui.home.tools;
+
+import android.annotation.SuppressLint;
+import android.graphics.Typeface;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.annotation.NonNull;
+import androidx.fragment.app.Fragment;
+import androidx.lifecycle.ViewModelProvider;
+
+import com.fatapp.oxygentoolbox.R;
+import com.fatapp.oxygentoolbox.layout.FoldLayout;
+import com.fatapp.oxygentoolbox.util.ToolsLauncher;
+import com.fatapp.oxygentoolbox.util.ToolsList;
+import com.fatapp.oxygentoolbox.util.VibratorController;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+public class ToolsFragment extends Fragment {
+
+    private View root;
+
+    private ToolsViewModel toolsViewModel;
+
+    private LinearLayout foldLayoutsLinearLayout;
+
+    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        toolsViewModel = new ViewModelProvider(this).get(ToolsViewModel.class);
+        root = inflater.inflate(R.layout.fragment_home_tools, container, false);
+
+        //init
+        initView();
+        initLayout();
+
+        return root;
+    }
+
+    private void initView() {
+        foldLayoutsLinearLayout = root.findViewById(R.id.fold_layouts_linear_layout);
+    }
+
+    private void initLayout() {
+        initFoldLayout();
+    }
+
+    @SuppressLint("ClickableViewAccessibility")
+    private void initFoldLayout() {
+        try {
+            ToolsList.init(getResources().getAssets().open("json/BasicTools.json"));
+        } catch (IOException e) {
+            e.printStackTrace();
+            Toast.makeText(getContext(), R.string.init_tools_failed, Toast.LENGTH_LONG).show();
+            return;
+        }
+
+        for (ToolsList.Tool tool : ToolsList.getToolList()) {
+            View foldLayoutBodyLayout = getLayoutInflater().inflate(R.layout.fold_layout_body, null);
+            ViewGroup autoLinefeedLayout = foldLayoutBodyLayout.findViewById(R.id.auto_linefeed_layout);
+
+            for (ToolsList.Button button : tool.getButtonList()) {
+                View toolButtonLayout = getLayoutInflater().inflate(R.layout.tool_button, null);
+                Button toolButton = toolButtonLayout.findViewById(R.id.tool_button);
+                toolButton.setText(button.getText());
+
+                toolButton.setOnClickListener(v -> ToolsLauncher.launch(getContext(), button.getActivity()));
+
+                toolButton.setOnTouchListener((v, event) -> {
+                    if (event.getAction() == MotionEvent.ACTION_DOWN) {
+                        v.animate().translationZ(8f).setDuration(100L);
+                    }
+                    if (event.getAction() == MotionEvent.ACTION_UP) {
+                        v.animate().translationZ(0).setDuration(100L);
+                    }
+                    return false;
+                });
+
+                toolButton.setOnLongClickListener(v -> {
+                    v.animate().translationZ(0).setDuration(100L);
+                    VibratorController.vibrate(1);
+                    return false;
+                });
+
+                autoLinefeedLayout.addView(toolButtonLayout);
+            }
+
+            List<View> viewList = new ArrayList<>();
+            viewList.add(foldLayoutBodyLayout);
+
+            View foldLayoutHead = getLayoutInflater().inflate(R.layout.fold_layout, null);
+            FoldLayout foldLayout = foldLayoutHead.findViewById(R.id.fold_layout);
+            ((TextView) foldLayout.findViewById(R.id.fold_layout_text_view)).setText(tool.getFoldLayoutTitle());
+
+            TextView foldLayoutIcon = foldLayout.findViewById(R.id.fold_layout_icon);
+            foldLayoutIcon.setTypeface(Typeface.createFromAsset(requireContext().getAssets(), tool.getFont()));
+            foldLayoutIcon.setText(tool.getIcon());
+
+            foldLayout.addItemView(viewList);
+
+            foldLayoutsLinearLayout.removeAllViews();
+            foldLayoutsLinearLayout.addView(foldLayoutHead);
+        }
+
+        for (int i = 0; i < 10; i++) {
+            View toolButton = getLayoutInflater().inflate(R.layout.tool_button, null);
+            ((Button) toolButton.findViewById(R.id.tool_button)).setText("Button");
+            toolButton.findViewById(R.id.tool_button).setOnClickListener(v -> {
+            });
+
+            View foldLayoutBody = getLayoutInflater().inflate(R.layout.fold_layout_body, null);
+            ViewGroup layout_item_AutoLinefeedLayout = foldLayoutBody.findViewById(R.id.auto_linefeed_layout);
+            layout_item_AutoLinefeedLayout.addView(toolButton);
+
+            List<View> viewList = new ArrayList<>();
+            viewList.add(foldLayoutBody);
+
+            View foldLayoutHead = getLayoutInflater().inflate(R.layout.fold_layout, null);
+            FoldLayout foldLayout = foldLayoutHead.findViewById(R.id.fold_layout);
+            ((TextView) foldLayout.findViewById(R.id.fold_layout_text_view)).setText("FoldLayout_" + i);
+            foldLayout.addItemView(viewList);
+
+            foldLayoutsLinearLayout.addView(foldLayoutHead);
+        }
+    }
+
+
+}

app/src/main/java/com/fatapp/oxygentoolbox/ui/home/tools/ToolsViewModel.java

@@ -0,0 +1,19 @@
+package com.fatapp.oxygentoolbox.ui.home.tools;
+
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+import androidx.lifecycle.ViewModel;
+
+public class ToolsViewModel extends ViewModel {
+
+    private MutableLiveData<String> mText;
+
+    public ToolsViewModel() {
+        mText = new MutableLiveData<>();
+        mText.setValue("This is home fragment");
+    }
+
+    public LiveData<String> getText() {
+        return mText;
+    }
+}

app/src/main/java/com/fatapp/oxygentoolbox/ui/setting/SettingFragment.java

@@ -4,12 +4,9 @@ import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.TextView;
 
 import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
 import androidx.fragment.app.Fragment;
-import androidx.lifecycle.Observer;
 import androidx.lifecycle.ViewModelProvider;
 
 import com.fatapp.oxygentoolbox.R;
@@ -20,8 +17,7 @@ public class SettingFragment extends Fragment {
 
     public View onCreateView(@NonNull LayoutInflater inflater,
                              ViewGroup container, Bundle savedInstanceState) {
-        settingViewModel =
+        settingViewModel = new ViewModelProvider(this).get(SettingViewModel.class);
-                new ViewModelProvider(this).get(SettingViewModel.class);
         View root = inflater.inflate(R.layout.fragment_setting, container, false);
 /*
         final TextView textView = root.findViewById(R.id.text_setting);

app/src/main/java/com/fatapp/oxygentoolbox/ui/theme/ThemeFragment.java

@@ -18,10 +18,8 @@ public class ThemeFragment extends Fragment {
 
     private ThemeViewModel themeViewModel;
 
-    public View onCreateView(@NonNull LayoutInflater inflater,
+    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
-                             ViewGroup container, Bundle savedInstanceState) {
+        themeViewModel = new ViewModelProvider(this).get(ThemeViewModel.class);
-        themeViewModel =
-                new ViewModelProvider(this).get(ThemeViewModel.class);
         View root = inflater.inflate(R.layout.fragment_theme, container, false);
         final TextView textView = root.findViewById(R.id.text_theme);
         themeViewModel.getText().observe(getViewLifecycleOwner(), new Observer<String>() {

app/src/main/java/com/fatapp/oxygentoolbox/util/ResourceUtil.java

@@ -1,7 +1,22 @@
 package com.fatapp.oxygentoolbox.util;
 
+import android.annotation.SuppressLint;
 import android.app.Application;
+import android.content.Context;
 import android.content.res.Resources;
+import android.graphics.Color;
+import android.graphics.Rect;
+import android.view.Window;
+
+import androidx.annotation.AttrRes;
+import androidx.annotation.ColorInt;
+import androidx.annotation.NonNull;
+import androidx.annotation.StyleRes;
+import androidx.appcompat.view.ContextThemeWrapper;
+
+import com.google.android.material.color.MaterialColors;
+
+import java.util.Objects;
 
 public final class ResourceUtil {
 
@@ -28,4 +43,43 @@ public final class ResourceUtil {
     public static int getColor(int resId) {
         return sRes.getColor(resId);
     }
+
+    @ColorInt
+    public static int getThemeAttrColor(@NonNull Context context, @StyleRes int themeResId, @AttrRes int attrResId) {
+        return MaterialColors.getColor(new ContextThemeWrapper(context, themeResId), attrResId, Color.WHITE);
+    }
+
+    public static int getStatusBarHeight(Window window, Context context) {
+        Rect localRect = new Rect();
+        window.getDecorView().getWindowVisibleDisplayFrame(localRect);
+        int mStatusBarHeight = localRect.top;
+        if (mStatusBarHeight == 0) {
+            try {
+                @SuppressLint("PrivateApi")
+                Class<?> localClass = Class.forName("com.android.internal.R$dimen");
+                Object localObject = localClass.newInstance();
+                int status_bar_height = Integer.parseInt(Objects.requireNonNull(localClass.getField("status_bar_height").get(localObject)).toString());
+                mStatusBarHeight = context.getResources().getDimensionPixelSize(status_bar_height);
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
+        if (mStatusBarHeight == 0) {
+            int resourceId = context.getResources().getIdentifier("status_bar_height", "dimen", "android");
+            if (resourceId > 0) {
+                mStatusBarHeight = context.getResources().getDimensionPixelSize(resourceId);
+            }
+        }
+        return mStatusBarHeight;
+    }
+
+    public static int getNavigationBarHeight(Context context) {
+        int rid = context.getResources().getIdentifier("config_showNavigationBar", "bool", "android");
+        if (rid != 0) {
+            int resourceId = context.getResources().getIdentifier("navigation_bar_height", "dimen", "android");
+            return context.getResources().getDimensionPixelSize(resourceId);
+        } else {
+            return 0;
+        }
+    }
 }

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"
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
-    android:id="@+id/fragment_home"
     android:layout_width="match_parent"
-    android:layout_height="match_parent"
+    android:layout_height="match_parent">
-    android:background="?attr/app_background"
-    android:orientation="vertical"
-    tools:context=".ui.home.HomeFragment">
 
-    <LinearLayout
+    <androidx.viewpager2.widget.ViewPager2
-        android:id="@+id/fold_layouts_linear_layout"
+        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"
+        app:labelVisibilityMode="selected"
-        android:paddingBottom="10dp"
+        app:itemTextColor="?attr/app_on_theme"
-        android:orientation="vertical">
+        app:itemIconTint="?attr/app_on_theme"
-    </LinearLayout>
+        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>
+        <item name="postSplashScreenTheme">@style/Theme.OxygenToolbox.SplashActivity</item>
-    </style>
-
-    <style name="Theme.OxygenToolbox.Full" parent="Theme.OxygenToolbox.Default">
-        <item name="android:windowFullscreen">true</item>
     </style>
 
     <style name="Theme.OxygenToolbox.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />