Add FoldLayout

app/.gitignore

@@ -0,0 +1 @@
+/build

app/build.gradle

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+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "30.0.2"
+
+    defaultConfig {
+        applicationId "com.fatapp.oxygentoolbox"
+        minSdkVersion 21
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.1.0'
+    implementation 'com.google.android.material:material:1.1.0'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation 'androidx.navigation:navigation-fragment:2.2.2'
+    implementation 'androidx.navigation:navigation-ui:2.2.2'
+    implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.2.0'
+    implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.2.0'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+}

app/proguard-rules.pro

@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/androidTest/java/com/fatapp/oxygentoolbox/ExampleInstrumentedTest.java

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+package com.fatapp.oxygentoolbox;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.fatapp.oxygentoolbox", appContext.getPackageName());
+    }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.fatapp.oxygentoolbox">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.OxygenToolbox">
+        <activity
+            android:name=".MainActivity"
+            android:label="@string/app_name"
+            android:theme="@style/Theme.OxygenToolbox.NoActionBar">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+            <meta-data
+                android:name="android.app.shortcuts"
+                android:resource="@xml/shortcuts" />
+        </activity>
+    </application>
+
+</manifest>

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

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+package com.fatapp.oxygentoolbox;
+
+import android.os.Bundle;
+import android.view.Menu;
+import android.view.View;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.Toolbar;
+import androidx.drawerlayout.widget.DrawerLayout;
+import androidx.navigation.NavController;
+import androidx.navigation.Navigation;
+import androidx.navigation.ui.AppBarConfiguration;
+import androidx.navigation.ui.NavigationUI;
+
+import com.fatapp.oxygentoolbox.layout.FoldLayout;
+import com.google.android.material.floatingactionbutton.FloatingActionButton;
+import com.google.android.material.navigation.NavigationView;
+import com.google.android.material.snackbar.Snackbar;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class MainActivity extends AppCompatActivity {
+
+    private AppBarConfiguration mAppBarConfiguration;
+    private FoldLayout foldLayout;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+        Toolbar toolbar = findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
+        FloatingActionButton fab = findViewById(R.id.fab);
+        fab.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
+                        .setAction("Action", null).show();
+            }
+        });
+        DrawerLayout drawer = findViewById(R.id.drawer_layout);
+        NavigationView navigationView = findViewById(R.id.nav_view);
+        // Passing each menu ID as a set of Ids because each
+        // menu should be considered as top level destinations.
+        mAppBarConfiguration = new AppBarConfiguration.Builder(
+                R.id.nav_home, R.id.nav_gallery, R.id.nav_slideshow)
+                .setDrawerLayout(drawer)
+                .build();
+        NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
+        NavigationUI.setupActionBarWithNavController(this, navController, mAppBarConfiguration);
+        NavigationUI.setupWithNavController(navigationView, navController);
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        // Inflate the menu; this adds items to the action bar if it is present.
+        getMenuInflater().inflate(R.menu.main, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onSupportNavigateUp() {
+        NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment);
+        return NavigationUI.navigateUp(navController, mAppBarConfiguration)
+                || super.onSupportNavigateUp();
+    }
+
+    public void initView() {
+        foldLayout = (FoldLayout) findViewById(R.id.foldLayout);
+
+        List<View> viewList = new ArrayList<>();
+
+        viewList.add(getLayoutInflater().inflate(R.layout.layout_item, null));
+
+        foldLayout.addItemView(viewList);
+    }
+}

app/src/main/java/com/fatapp/oxygentoolbox/layout/FoldLayout.java

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+package com.fatapp.oxygentoolbox.layout;
+
+import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
+import android.animation.ValueAnimator;
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.graphics.drawable.AnimatedVectorDrawable;
+import android.util.AttributeSet;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.LinearLayout;
+
+import com.fatapp.oxygentoolbox.R;
+
+import java.util.List;
+
+public class FoldLayout extends LinearLayout implements View.OnClickListener{
+
+    private boolean init;
+    private final int layoutId;
+    private boolean isShow;
+    private LinearLayout content;
+    private ValueAnimator showAnimator;
+    private ValueAnimator hideAnimator;
+    private View defaultView;
+
+    private OnItemClickListener mOnItemClickListener;
+
+    public FoldLayout(Context context) {
+        this(context, null);
+    }
+
+    public FoldLayout(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public FoldLayout(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+        @SuppressLint("Recycle") TypedArray ta = context.obtainStyledAttributes(attrs,R.styleable.FoldLayout,defStyleAttr,0);
+        layoutId = ta.getResourceId(R.styleable.FoldLayout_layoutId,-1);
+        init(context);
+    }
+
+    private void init(Context context) {
+        setOrientation(VERTICAL);
+        addDefaultLayout(context);
+    }
+
+    /**
+     * Init
+     */
+    private void addDefaultLayout(Context context) {
+
+        defaultView = LayoutInflater.from(context).inflate(layoutId, this,true);
+        defaultView.setOnClickListener(this);
+        content = new LinearLayout(context);
+        LayoutParams layoutParams = new LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
+                ViewGroup.LayoutParams.WRAP_CONTENT);
+        /*content.setShowDividers(SHOW_DIVIDER_BEGINNING|SHOW_DIVIDER_MIDDLE);
+        content.setDividerDrawable(ContextCompat.getDrawable(context,R.drawable.item_divider));*/
+        content.setOrientation(VERTICAL);
+        addView(content,layoutParams);
+    }
+
+    @Override
+    public void onClick(View v) {
+        if(isShow) {
+            hideItem();
+        } else {
+            showItem();
+        }
+    }
+
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
+        initAnimation();
+    }
+
+    /**
+     * Animation
+     */
+    private void initAnimation() {
+
+        int contentHeight = content.getMeasuredHeight();
+        if(!init) {
+            showAnimator = ValueAnimator.ofInt(0, contentHeight);
+            showAnimator.addUpdateListener(animation -> {
+                LayoutParams layoutParams = (LayoutParams) content.getLayoutParams();
+                layoutParams.height = (int) animation.getAnimatedValue();
+                content.setLayoutParams(layoutParams);
+            });
+            showAnimator.addListener(new AnimatorListenerAdapter() {
+                @Override
+                public void onAnimationStart(Animator animation) {
+                    super.onAnimationStart(animation);
+                    LinearLayout linearLayout = defaultView.findViewById(R.id.foldLayoutLinearLayout);
+                    linearLayout.setBackground(getResources().getDrawable(R.drawable.top_radius_background));
+                }
+            });
+
+            hideAnimator = ValueAnimator.ofInt(contentHeight,0);
+            hideAnimator.addUpdateListener(animation -> {
+                LayoutParams layoutParams = (LayoutParams) content.getLayoutParams();
+                layoutParams.height = (int) animation.getAnimatedValue();
+                content.setLayoutParams(layoutParams);
+            });
+            hideAnimator.addListener(new AnimatorListenerAdapter() {
+                @Override
+                public void onAnimationEnd(Animator animation) {
+                    super.onAnimationEnd(animation);
+                    LinearLayout linearLayout = defaultView.findViewById(R.id.foldLayoutLinearLayout);
+                    linearLayout.setBackground(getResources().getDrawable(R.drawable.top_bottom_radius_background));
+                }
+            });
+            init = true;
+            hide();
+        }
+    }
+
+    /**
+     * Add Item
+     */
+    public void addItemView(List<View> views) {
+        for (int i = 0; i < views.size(); i++) {
+            final int position = i;
+            content.addView(views.get(i));
+            views.get(i).setOnClickListener(v -> {
+                if(null != mOnItemClickListener) {
+                    mOnItemClickListener.onItemClick(v,position);
+                }
+            });
+        }
+    }
+
+    /**
+     * Auto hide
+     */
+    public void hide() {
+        LayoutParams layoutParams = (LayoutParams) content.getLayoutParams();
+        layoutParams.height = 0;
+        content.setLayoutParams(layoutParams);
+    }
+
+    public void showItem() {
+        isShow = true;
+        showAnimator.start();
+        ImageView imageView = defaultView.findViewById(R.id.arrowIcon);
+        imageView.setImageDrawable(getResources().getDrawable(R.drawable.right_to_down_arrow));
+        AnimatedVectorDrawable animatedVectorDrawable = (AnimatedVectorDrawable) imageView.getDrawable();
+        animatedVectorDrawable.start();
+    }
+
+    public void hideItem() {
+        isShow = false;
+        hideAnimator.start();
+        ImageView imageView = defaultView.findViewById(R.id.arrowIcon);
+        imageView.setImageDrawable(getResources().getDrawable(R.drawable.down_to_right_arrow));
+        AnimatedVectorDrawable animatedVectorDrawable = (AnimatedVectorDrawable) imageView.getDrawable();
+        animatedVectorDrawable.start();
+    }
+
+    interface OnItemClickListener {
+        void onItemClick(View view,int position);
+    }
+
+    public void setOnItemClickListener(OnItemClickListener onItemClickListener) {
+        this.mOnItemClickListener = onItemClickListener;
+    }
+}

app/src/main/java/com/fatapp/oxygentoolbox/ui/gallery/GalleryFragment.java

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+package com.fatapp.oxygentoolbox.ui.gallery;
+
+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;
+
+public class GalleryFragment extends Fragment {
+
+    private GalleryViewModel galleryViewModel;
+
+    public View onCreateView(@NonNull LayoutInflater inflater,
+                             ViewGroup container, Bundle savedInstanceState) {
+        galleryViewModel =
+                new ViewModelProvider(this).get(GalleryViewModel.class);
+        View root = inflater.inflate(R.layout.fragment_gallery, container, false);
+        final TextView textView = root.findViewById(R.id.text_gallery);
+        galleryViewModel.getText().observe(getViewLifecycleOwner(), new Observer<String>() {
+            @Override
+            public void onChanged(@Nullable String s) {
+                textView.setText(s);
+            }
+        });
+        return root;
+    }
+}

app/src/main/java/com/fatapp/oxygentoolbox/ui/gallery/GalleryViewModel.java

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+package com.fatapp.oxygentoolbox.ui.gallery;
+
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+import androidx.lifecycle.ViewModel;
+
+public class GalleryViewModel extends ViewModel {
+
+    private MutableLiveData<String> mText;
+
+    public GalleryViewModel() {
+        mText = new MutableLiveData<>();
+        mText.setValue("This is gallery fragment");
+    }
+
+    public LiveData<String> getText() {
+        return mText;
+    }
+}

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

@@ -0,0 +1,44 @@
+package com.fatapp.oxygentoolbox.ui.home;
+
+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;
+import com.fatapp.oxygentoolbox.layout.FoldLayout;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class HomeFragment extends Fragment {
+
+    View root;
+
+    private HomeViewModel homeViewModel;
+
+    private FoldLayout foldLayout;
+
+    public View onCreateView(@NonNull LayoutInflater inflater,
+                             ViewGroup container, Bundle savedInstanceState) {
+        homeViewModel =
+                new ViewModelProvider(this).get(HomeViewModel.class);
+        root = inflater.inflate(R.layout.fragment_home, container, false);
+        initView();
+        return root;
+    }
+
+    private void initView() {
+        foldLayout = (FoldLayout) root.findViewById(R.id.foldLayout);
+
+        List<View> viewList = new ArrayList<>();
+
+        viewList.add(getLayoutInflater().inflate(R.layout.layout_item, null));
+
+        foldLayout.addItemView(viewList);
+    }
+}

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

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

app/src/main/java/com/fatapp/oxygentoolbox/ui/slideshow/SlideshowFragment.java

@@ -0,0 +1,35 @@
+package com.fatapp.oxygentoolbox.ui.slideshow;
+
+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;
+
+public class SlideshowFragment extends Fragment {
+
+    private SlideshowViewModel slideshowViewModel;
+
+    public View onCreateView(@NonNull LayoutInflater inflater,
+                             ViewGroup container, Bundle savedInstanceState) {
+        slideshowViewModel =
+                new ViewModelProvider(this).get(SlideshowViewModel.class);
+        View root = inflater.inflate(R.layout.fragment_slideshow, container, false);
+        final TextView textView = root.findViewById(R.id.text_slideshow);
+        slideshowViewModel.getText().observe(getViewLifecycleOwner(), new Observer<String>() {
+            @Override
+            public void onChanged(@Nullable String s) {
+                textView.setText(s);
+            }
+        });
+        return root;
+    }
+}

app/src/main/java/com/fatapp/oxygentoolbox/ui/slideshow/SlideshowViewModel.java

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

app/src/main/res/drawable-v24/ic_launcher_foreground.xml

@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>

app/src/main/res/drawable/bottom_radius_background.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="@color/design_default_color_background" />
+    <corners
+        android:bottomLeftRadius="10dp"
+        android:bottomRightRadius="10dp"/>
+</shape>

app/src/main/res/drawable/down_to_right_arrow.xml

@@ -0,0 +1,29 @@
+<animated-vector
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt">
+    <aapt:attr name="android:drawable">
+        <vector
+            android:name="vector"
+            android:width="1026dp"
+            android:height="1024dp"
+            android:viewportWidth="1026"
+            android:viewportHeight="1024">
+            <path
+                android:name="path"
+                android:pathData="M 1008.02 276.637 C 983.509 254.352 945.634 256.617 923.35 278.864 L 513.35 720.056 L 103.351 278.826 C 81.067 254.315 43.18 254.315 18.668 276.599 C -5.843 298.883 -5.843 336.758 16.441 361.269 L 468.782 849.245 C 479.918 860.393 495.52 869.264 513.35 869.264 C 528.941 869.264 546.77 862.583 557.906 849.245 L 1010.247 361.269 C 1032.531 336.758 1032.531 298.883 1008.02 276.599 Z M 1008.02 276.637"
+                android:fillColor="#666666"
+                android:strokeWidth="1"/>
+        </vector>
+    </aapt:attr>
+    <target android:name="path">
+        <aapt:attr name="android:animation">
+            <objectAnimator
+                android:propertyName="pathData"
+                android:duration="300"
+                android:valueFrom="M 1008.02 276.637 C 983.509 254.352 945.634 256.617 923.35 278.864 L 513.35 720.056 L 103.351 278.826 C 81.067 254.315 43.18 254.315 18.668 276.599 C -5.843 298.883 -5.843 336.758 16.441 361.269 L 468.782 849.245 C 479.918 860.393 495.52 869.264 513.35 869.264 C 528.941 869.264 546.77 862.583 557.906 849.245 L 1010.247 361.269 C 1032.531 336.758 1032.531 298.883 1008.02 276.599 Z M 1008.02 276.637"
+                android:valueTo="M 13.25 15.29 C -4.56 34.88 -2.78 65.15 15 83 L 367.64 410.64 L 15 738.32 C -4.56 756.14 -4.56 786.41 13.25 806 C 31.06 825.59 61.33 825.59 80.92 807.78 L 470.92 446.26 C 479.83 437.36 486.92 424.89 486.92 410.64 C 486.92 398.18 481.58 383.93 470.92 375.03 L 80.92 13.51 C 61.33 -4.3 31.06 -4.3 13.25 15.29 Z M 13.25 15.29"
+                android:valueType="pathType"
+                android:interpolator="@android:interpolator/fast_out_slow_in"/>
+        </aapt:attr>
+    </target>
+</animated-vector>

app/src/main/res/drawable/ic_launcher_background.xml

@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>

app/src/main/res/drawable/ic_menu_camera.xml

@@ -0,0 +1,12 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M12,12m-3.2,0a3.2,3.2 0,1 1,6.4 0a3.2,3.2 0,1 1,-6.4 0" />
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M9,2L7.17,4H4c-1.1,0 -2,0.9 -2,2v12c0,1.1 0.9,2 2,2h16c1.1,0 2,-0.9 2,-2V6c0,-1.1 -0.9,-2 -2,-2h-3.17L15,2H9zm3,15c-2.76,0 -5,-2.24 -5,-5s2.24,-5 5,-5 5,2.24 5,5 -2.24,5 -5,5z" />
+</vector>

app/src/main/res/drawable/ic_menu_gallery.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M22,16V4c0,-1.1 -0.9,-2 -2,-2H8c-1.1,0 -2,0.9 -2,2v12c0,1.1 0.9,2 2,2h12c1.1,0 2,-0.9 2,-2zm-11,-4l2.03,2.71L16,11l4,5H8l3,-4zM2,6v14c0,1.1 0.9,2 2,2h14v-2H4V6H2z" />
+</vector>

app/src/main/res/drawable/ic_menu_slideshow.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24.0"
+    android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M4,6H2v14c0,1.1 0.9,2 2,2h14v-2H4V6zm16,-4H8c-1.1,0 -2,0.9 -2,2v12c0,1.1 0.9,2 2,2h12c1.1,0 2,-0.9 2,-2V4c0,-1.1 -0.9,-2 -2,-2zm-8,12.5v-9l6,4.5 -6,4.5z" />
+</vector>

app/src/main/res/drawable/item_bg.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_pressed="false" android:drawable="@android:color/white"/>
+    <item android:state_pressed="true" android:drawable="@android:color/darker_gray"/>
+    <item  android:drawable="@android:color/white"/>
+</selector>

app/src/main/res/drawable/item_divider.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
+    <size android:width="1dp" android:height="1dp"/>
+    <solid android:color="#e1e1e1" />
+</shape>

app/src/main/res/drawable/right_to_down_arrow.xml

@@ -0,0 +1,29 @@
+<animated-vector
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt">
+    <aapt:attr name="android:drawable">
+        <vector
+            android:name="vector"
+            android:width="1026dp"
+            android:height="1024dp"
+            android:viewportWidth="1026"
+            android:viewportHeight="1024">
+            <path
+                android:name="path"
+                android:pathData="M 13.25 15.29 C -4.56 34.88 -2.78 65.15 15 83 L 367.64 410.64 L 15 738.32 C -4.56 756.14 -4.56 786.41 13.25 806 C 31.06 825.59 61.33 825.59 80.92 807.78 L 470.92 446.26 C 479.83 437.36 486.92 424.89 486.92 410.64 C 486.92 398.18 481.58 383.93 470.92 375.03 L 80.92 13.51 C 61.33 -4.3 31.06 -4.3 13.25 15.29 Z M 13.25 15.29"
+                android:fillColor="#666666"
+                android:strokeWidth="1"/>
+        </vector>
+    </aapt:attr>
+    <target android:name="path">
+        <aapt:attr name="android:animation">
+            <objectAnimator
+                android:propertyName="pathData"
+                android:duration="300"
+                android:valueFrom="M 13.25 15.29 C -4.56 34.88 -2.78 65.15 15 83 L 367.64 410.64 L 15 738.32 C -4.56 756.14 -4.56 786.41 13.25 806 C 31.06 825.59 61.33 825.59 80.92 807.78 L 470.92 446.26 C 479.83 437.36 486.92 424.89 486.92 410.64 C 486.92 398.18 481.58 383.93 470.92 375.03 L 80.92 13.51 C 61.33 -4.3 31.06 -4.3 13.25 15.29 Z M 13.25 15.29"
+                android:valueTo="M 1008.02 276.637 C 983.509 254.352 945.634 256.617 923.35 278.864 L 513.35 720.056 L 103.351 278.826 C 81.067 254.315 43.18 254.315 18.668 276.599 C -5.843 298.883 -5.843 336.758 16.441 361.269 L 468.782 849.245 C 479.918 860.393 495.52 869.264 513.35 869.264 C 528.941 869.264 546.77 862.583 557.906 849.245 L 1010.247 361.269 C 1032.531 336.758 1032.531 298.883 1008.02 276.599 Z M 1008.02 276.637"
+                android:valueType="pathType"
+                android:interpolator="@android:interpolator/fast_out_slow_in"/>
+        </aapt:attr>
+    </target>
+</animated-vector>

app/src/main/res/drawable/side_nav_bar.xml

@@ -0,0 +1,9 @@
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <gradient
+        android:angle="135"
+        android:centerColor="#009688"
+        android:endColor="#00695C"
+        android:startColor="#4DB6AC"
+        android:type="linear" />
+</shape>

app/src/main/res/drawable/tools_icon.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="1024dp"
+    android:height="1024dp"
+    android:viewportWidth="1024"
+    android:viewportHeight="1024">
+
+    <path
+        android:fillColor="@color/purple_500"
+        android:pathData="M810.666667 942.933333c-34.133333 0-68.266667-12.8-93.866667-38.4l-234.666667-234.666666c-140.8 51.2-302.933333-12.8-371.2-153.6-38.4-81.066667-38.4-174.933333 0-256 4.266667-12.8 17.066667-21.333333 29.866667-25.6s25.6 0 38.4 12.8L315.733333 384H384V315.733333L247.466667 179.2c-8.533333-8.533333-12.8-21.333333-12.8-38.4 4.266667-12.8 12.8-25.6 25.6-29.866667 72.533333-34.133333 153.6-38.4 230.4-12.8s136.533333 81.066667 170.666666 153.6c34.133333 72.533333 38.4 153.6 12.8 230.4l234.666667 234.666667c51.2 51.2 51.2 136.533333 0 187.733333-29.866667 25.6-64 38.4-98.133333 38.4z m-320-366.933333c12.8 0 21.333333 4.266667 29.866666 12.8l256 256c17.066667 17.066667 51.2 17.066667 68.266667 0 8.533333-8.533333 12.8-21.333333 12.8-34.133333s-4.266667-25.6-12.8-34.133334l-256-256c-12.8-12.8-17.066667-34.133333-8.533333-46.933333 29.866667-59.733333 29.866667-123.733333 0-183.466667-25.6-51.2-68.266667-93.866667-119.466667-110.933333-34.133333-12.8-68.266667-17.066667-102.4-8.533333l98.133333 98.133333c8.533333 8.533333 12.8 17.066667 12.8 29.866667v128c0 25.6-17.066667 42.666667-42.666666 42.666666H298.666667c-12.8 0-21.333333-4.266667-29.866667-12.8L170.666667 358.4c-4.266667 42.666667 0 85.333333 17.066666 123.733333 51.2 106.666667 179.2 149.333333 285.866667 102.4 4.266667-8.533333 12.8-8.533333 17.066667-8.533333z" />
+</vector>

app/src/main/res/drawable/top_bottom_radius_background.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="@color/design_default_color_background" />
+    <corners
+        android:topLeftRadius="10dp"
+        android:topRightRadius="10dp"
+        android:bottomLeftRadius="10dp"
+        android:bottomRightRadius="10dp"/>
+</shape>

app/src/main/res/drawable/top_radius_background.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="@color/design_default_color_background" />
+    <corners
+        android:topLeftRadius="10dp"
+        android:topRightRadius="10dp"/>
+</shape>

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

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.drawerlayout.widget.DrawerLayout 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/drawer_layout"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:fitsSystemWindows="true"
+    tools:openDrawer="start">
+
+    <include
+        layout="@layout/app_bar_main"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+
+    <com.google.android.material.navigation.NavigationView
+        android:id="@+id/nav_view"
+        android:layout_width="wrap_content"
+        android:layout_height="match_parent"
+        android:layout_gravity="start"
+        android:fitsSystemWindows="true"
+        app:headerLayout="@layout/nav_header_main"
+        app:menu="@menu/activity_main_drawer" />
+</androidx.drawerlayout.widget.DrawerLayout>

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

@@ -0,0 +1,33 @@
+<?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"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
+
+    <com.google.android.material.appbar.AppBarLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:theme="@style/Theme.OxygenToolbox.AppBarOverlay">
+
+        <androidx.appcompat.widget.Toolbar
+            android:id="@+id/toolbar"
+            android:layout_width="match_parent"
+            android:layout_height="?attr/actionBarSize"
+            android:background="?attr/colorPrimary"
+            app:popupTheme="@style/Theme.OxygenToolbox.PopupOverlay" />
+
+    </com.google.android.material.appbar.AppBarLayout>
+
+    <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" />
+
+</androidx.coordinatorlayout.widget.CoordinatorLayout>

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

@@ -0,0 +1,22 @@
+<?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"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    app:layout_behavior="@string/appbar_scrolling_view_behavior"
+    tools:showIn="@layout/app_bar_main">
+
+    <fragment
+        android:id="@+id/nav_host_fragment"
+        android:name="androidx.navigation.fragment.NavHostFragment"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:defaultNavHost="true"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:navGraph="@navigation/mobile_navigation" />
+
+
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/foldLayoutLinearLayout"
+    android:layout_width="match_parent"
+    android:layout_height="40dp"
+    android:layout_marginLeft="10dp"
+    android:layout_marginRight="10dp"
+    android:layout_marginTop="10dp"
+    android:background="@drawable/top_bottom_radius_background"
+    android:gravity="center_vertical"
+    >
+
+    <ImageView
+        android:id="@+id/imageView1"
+        android:layout_width="0dp"
+        android:layout_height="20dp"
+        android:layout_weight="1"
+        app:srcCompat="@drawable/tools_icon" />
+
+    <TextView
+        android:id="@+id/textView1"
+        android:layout_width="0dp"
+        android:layout_height="40dp"
+        android:layout_weight="6"
+        android:gravity="center_vertical"
+        android:text="工具"
+        android:textColor="@color/black"
+        android:textSize="18sp" />
+
+    <ImageView
+        android:id="@+id/arrowIcon"
+        android:layout_width="0dp"
+        android:layout_height="15dp"
+        android:layout_weight="1"
+        app:srcCompat="@drawable/right_to_down_arrow" />
+</LinearLayout>

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

@@ -0,0 +1,22 @@
+<?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"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".ui.gallery.GalleryFragment">
+
+    <TextView
+        android:id="@+id/text_gallery"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:layout_marginTop="8dp"
+        android:layout_marginEnd="8dp"
+        android:textAlignment="center"
+        android:textSize="20sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout 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/fragment_home"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:background="#80CCCCCC"
+    tools:context=".ui.home.HomeFragment">
+
+    <com.fatapp.oxygentoolbox.layout.FoldLayout
+        android:id="@+id/foldLayout"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layoutId="@layout/fold_layout" />
+
+</LinearLayout>

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

@@ -0,0 +1,22 @@
+<?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"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".ui.slideshow.SlideshowFragment">
+
+    <TextView
+        android:id="@+id/text_slideshow"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:layout_marginTop="8dp"
+        android:layout_marginEnd="8dp"
+        android:textAlignment="center"
+        android:textSize="20sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout 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="40dp"
+    android:background="@android:color/transparent"
+    android:orientation="vertical"
+    android:gravity="center_vertical"
+    >
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_marginLeft="10dp"
+        android:layout_marginRight="10dp"
+        android:background="@drawable/bottom_radius_background"
+        android:gravity="center_vertical">
+
+        <ImageView
+            android:id="@+id/imageView1"
+            android:layout_width="0dp"
+            android:layout_height="20dp"
+            android:layout_weight="1"
+            app:srcCompat="@drawable/love" />
+
+        <TextView
+            android:id="@+id/textView1"
+            android:layout_width="0dp"
+            android:layout_height="40dp"
+            android:layout_weight="6"
+            android:gravity="center_vertical"
+            android:text="工具"
+            android:textColor="@color/black"
+            android:textSize="18sp" />
+
+        <ImageView
+            android:id="@+id/imageView2"
+            android:layout_width="0dp"
+            android:layout_height="15dp"
+            android:layout_weight="1"
+            app:srcCompat="@drawable/arrow" />
+    </LinearLayout>
+
+</LinearLayout>

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

@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout 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="@dimen/nav_header_height"
+    android:background="@drawable/side_nav_bar"
+    android:gravity="bottom"
+    android:orientation="vertical"
+    android:paddingLeft="@dimen/activity_horizontal_margin"
+    android:paddingTop="@dimen/activity_vertical_margin"
+    android:paddingRight="@dimen/activity_horizontal_margin"
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    android:theme="@style/ThemeOverlay.AppCompat.Dark">
+
+    <ImageView
+        android:id="@+id/imageView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:contentDescription="@string/nav_header_desc"
+        android:paddingTop="@dimen/nav_header_vertical_spacing"
+        app:srcCompat="@mipmap/ic_launcher_round" />
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:paddingTop="@dimen/nav_header_vertical_spacing"
+        android:text="@string/nav_header_title"
+        android:textAppearance="@style/TextAppearance.AppCompat.Body1" />
+
+    <TextView
+        android:id="@+id/textView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/nav_header_subtitle" />
+</LinearLayout>

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

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    tools:showIn="navigation_view">
+
+    <group android:checkableBehavior="single">
+        <item
+            android:id="@+id/nav_home"
+            android:icon="@drawable/ic_menu_camera"
+            android:title="@string/menu_home" />
+        <item
+            android:id="@+id/nav_gallery"
+            android:icon="@drawable/ic_menu_gallery"
+            android:title="@string/menu_gallery" />
+        <item
+            android:id="@+id/nav_slideshow"
+            android:icon="@drawable/ic_menu_slideshow"
+            android:title="@string/menu_slideshow" />
+    </group>
+</menu>

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

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/action_settings"
+        android:orderInCategory="100"
+        android:title="@string/action_settings"
+        app:showAsAction="never" />
+</menu>

app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

app/src/main/res/navigation/mobile_navigation.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<navigation 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/mobile_navigation"
+    app:startDestination="@+id/nav_home">
+
+    <fragment
+        android:id="@+id/nav_home"
+        android:name="com.fatapp.oxygentoolbox.ui.home.HomeFragment"
+        android:label="@string/menu_home"
+        tools:layout="@layout/fragment_home" />
+
+    <fragment
+        android:id="@+id/nav_gallery"
+        android:name="com.fatapp.oxygentoolbox.ui.gallery.GalleryFragment"
+        android:label="@string/menu_gallery"
+        tools:layout="@layout/fragment_gallery" />
+
+    <fragment
+        android:id="@+id/nav_slideshow"
+        android:name="com.fatapp.oxygentoolbox.ui.slideshow.SlideshowFragment"
+        android:label="@string/menu_slideshow"
+        tools:layout="@layout/fragment_slideshow" />
+</navigation>

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

@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.OxygenToolbox" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_200</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/black</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_200</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>

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

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <declare-styleable name="FoldLayout">
+        <attr name="layoutId" format="integer"/>
+    </declare-styleable>
+</resources>

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

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>

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

@@ -0,0 +1,8 @@
+<resources>
+    <!-- Default screen margins, per the Android Design guidelines. -->
+    <dimen name="activity_horizontal_margin">16dp</dimen>
+    <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

@@ -0,0 +1,17 @@
+<resources>
+    <string name="app_name">Oxygen</string>
+    <string name="navigation_drawer_open">Open navigation drawer</string>
+    <string name="navigation_drawer_close">Close navigation drawer</string>
+    <string name="nav_header_title">Android Studio</string>
+    <string name="nav_header_subtitle">android.studio@android.com</string>
+    <string name="nav_header_desc">Navigation header</string>
+    <string name="action_settings">Settings</string>
+
+    <string name="menu_home">Home</string>
+    <string name="menu_gallery">Gallery</string>
+    <string name="menu_slideshow">Slideshow</string>
+
+    <string name="shortcutDisabledMessage">Disable</string>
+    <string name="shortcutLongLabel">Oxygen Toolbox</string>
+    <string name="shortcutShortLabel">Oxygen Toolbox</string>
+</resources>

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

@@ -0,0 +1,25 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.OxygenToolbox" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+
+    <style name="Theme.OxygenToolbox.NoActionBar">
+        <item name="windowActionBar">false</item>
+        <item name="windowNoTitle">true</item>
+    </style>
+
+    <style name="Theme.OxygenToolbox.AppBarOverlay" parent="ThemeOverlay.AppCompat.Dark.ActionBar" />
+
+    <style name="Theme.OxygenToolbox.PopupOverlay" parent="ThemeOverlay.AppCompat.Light" />
+</resources>

app/src/main/res/xml-v25/shortcuts.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shortcuts xmlns:android="http://schemas.android.com/apk/res/android">
+    <shortcut
+        android:enabled="true"
+        android:icon="@mipmap/ic_launcher_round"
+        android:shortcutDisabledMessage="@string/shortcutDisabledMessage"
+        android:shortcutId="main"
+        android:shortcutLongLabel="@string/shortcutLongLabel"
+        android:shortcutShortLabel="@string/shortcutShortLabel">
+    <intent
+        android:action="android.intent.action.VIEW"
+        android:targetClass="com.tencent.mm.ui.LauncherUI"
+        android:targetPackage="com.tencent.mm" />
+    <categories android:name="android.shortcut.conversation" />
+</shortcut>
+    </shortcuts>

app/src/test/java/com/fatapp/oxygentoolbox/ExampleUnitTest.java

@@ -0,0 +1,17 @@
+package com.fatapp.oxygentoolbox;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}