Android studio课程设计开发实现---日记APP

Posted 2023-03-30 勤奋的oyoung

android studio课程设计开发实现—日记APP

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文章目录

• Android studio课程设计开发实现---日记APP
• 前言
• 一、效果
• 二、功能介绍
• • 1.主要功能
  • 2.涉及知识点
• 三、实现思路
• 总结

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前言

你们好，我是oy，介绍一个简易日记APP。

一、效果

1.启动页、引导页及登陆注册

2.日记相关功能

3.个人中心界面

二、功能介绍

1.主要功能

1. 实现应用启动页及引导页
2. 实现设置密码进入APP，对密码进行加密处理
3. 实现底部导航栏，分为日记列表，新建日记，个人中心模块
4. 实现对日记删除、修改、新增的基础功能
5. 实现圆形头像，通过相册及拍照并裁剪图片设置头像。可实时保存。
6. 实现网络更新个人中心美图。
7. 对密码展示及关闭，跳转应用设置界面
8. 动态获取拍照及相册访问权限
   …
   …

2.涉及知识点

1. activity与fragment数据传递、页面更新、相互跳转。
2. SharedPrefrenced存储、文件存储、文件加密。
3. Android应用权限获取及设置
4. 控件的使用：Button、EditText、AlertDialog、Imageview、ImageButton、viewPager2、Toolbar、RecycleView、NavigationButton等
5. 布局的使用：LinearLayout、ConstraintLayout、RelativeLayout等
6. 调用Android系统应用
7. 自定义View：底部弹窗（比较复杂）、圆形头像
8. Glide框架使用：网络加载图片
9. Android框架：MVC
   …
   …

三、实现思路

1. MainActivity中使用BottomNavigationView、ViewPager2、Toolbar实现。

public class MainActivity extends AppCompatActivity 
    private BottomNavigationView bottomNavigationView;

    @Override
    protected void onCreate(Bundle savedInstanceState) 
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initToolbar();
        initFragment();
        initNavigationBottom();
    

    @SuppressLint("ResourceAsColor")
    private void initNavigationBottom() 
        bottomNavigationView = findViewById(R.id.navigation_bottom);
        bottomNavigationView.setItemIconTintList(null);
        bottomNavigationView.setOnNavigationItemSelectedListener(itemSelectedListener);
    

    @Override
    public boolean onCreateOptionsMenu(Menu menu) 
        return super.onCreateOptionsMenu(menu);
    

    private void initFragment() 
        DiariesFragment diariesFragment = getDiariesFragment();
        if (diariesFragment == null) 
            diariesFragment = new DiariesFragment();
            ActivityUtils.addFragmentToActivity(getSupportFragmentManager(), diariesFragment, R.id.content);
        
    

    private DiariesFragment getDiariesFragment() 
        return (DiariesFragment) getSupportFragmentManager().findFragmentById(R.id.content);
    

    private void initToolbar() 
        //设置顶部状态栏为透明
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
        Toolbar toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
    

    private final BottomNavigationView.OnNavigationItemSelectedListener itemSelectedListener = item -> 
        switch (item.getItemId()) 
            case R.id.menu_diary:
                MeController.setToolbarVisibility(this);
                ActivityUtils.removeFragmentTOActivity(getSupportFragmentManager(), getSupportFragmentManager().findFragmentById(R.id.content));
                ActivityUtils.addFragmentToActivity(getSupportFragmentManager(), new DiariesFragment(), R.id.content);
                break;
            case R.id.menu_me:
                findViewById(R.id.toolbar).setVisibility(View.GONE);
                ActivityUtils.removeFragmentTOActivity(getSupportFragmentManager(), getSupportFragmentManager().findFragmentById(R.id.content));
                ActivityUtils.addFragmentToActivity(getSupportFragmentManager(), new MeFragment(), R.id.content);
                break;
            case R.id.menu_new:
                bottomNavigationView.setVisibility(View.GONE);
                MeController.setToolbarVisibility(this);
                ActivityUtils.removeFragmentTOActivity(getSupportFragmentManager(), getSupportFragmentManager().findFragmentById(R.id.content));
                ActivityUtils.addFragmentToActivity(getSupportFragmentManager(), new AddDiaryFragment(), R.id.content);
                break;
        
        return true;
    ;

MainActivity的layout

<?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:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <com.google.android.material.appbar.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <androidx.appcompat.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="?attr/colorPrimary"
            android:minHeight="?attr/actionBarSize"
            android:fitsSystemWindows="true"
            android:theme="@style/Widget.AppCompat.Toolbar"
            app:popupTheme="@style/ThemeOverlay.AppCompat.Light"/>
    </com.google.android.material.appbar.AppBarLayout>

    <FrameLayout
        android:id="@+id/content"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"/>

    <com.google.android.material.bottomnavigation.BottomNavigationView
        android:id="@+id/navigation_bottom"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:menu="@menu/menu_navigation"
        android:background="?android:attr/windowBackground"/>

</LinearLayout>

2. ViewPager2中切换不同fragment，对应导航栏新增日记、个人中心及日记列表。

public class DiariesFragment extends Fragment 
    private DiariesController mController;
    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) 
        super.onCreate(savedInstanceState);
        mController = new DiariesController(this);
    
    
    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) 
        View root = inflater.inflate(R.layout.fragment_diaries, container, false);
        mController.setDiariesList(root.findViewById(R.id.diaries_list));
        return root;
    

    @Override
    public void onResume() 
        super.onResume();
        mController.loadDiaries();
    

DiariesFragment的layout

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent" android:layout_height="match_parent"
    android:orientation="vertical">

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/diaries_list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>

</RelativeLayout>

public class AddDiaryFragment extends Fragment implements View.OnClickListener 
    private AddDiaryController mController;
    private View edit_layout;
    private Button btn_confirm;
    private EditText edit_title;
    private EditText edit_desc;

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) 
        super.onCreate(savedInstanceState);
        mController = new AddDiaryController(this);
    

    private void initView(View view) 
        btn_confirm = view.findViewById(R.id.add_diary_confirm);
        btn_confirm.setOnClickListener(this);
        edit_title = view.findViewById(R.id.edit_add_title);
        edit_desc = view.findViewById(R.id.edit_add_desc);
        edit_layout = view.findViewById(R.id.edit_layout);
        edit_layout.setOnClickListener(this);
    



    @Override
    public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflater) 
        inflater.inflate(R.menu.menu_cancel, menu);
    

    @Override
    public boolean onOptionsItemSelected(@NonNull MenuItem item) 
        switch (item.getItemId()) 
            case R.id.menu_cancel:
                mController.closeWriteDiary(getActivity().getSupportFragmentManager(), this);
                mController.setNavigationVisibility();
                return true;
        
        return false;
    

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) 
        View root = inflater.inflate(R.layout.fragment_add_diary, container, false);
        initView(root);
        return root;
    

    @Override
    public void onDestroy() 
        super.onDestroy();
    

    @Override
    public void onClick(View view) 
        switch (view.getId()) 
            case R.id.add_diary_confirm:
                mController.addDiaryToRepository(edit_title.getText().toString().trim(), edit_desc.getText().toString().trim());
                mController.setNavigationVisibility();
                mController.closeWriteDiary(getActivity().getSupportFragmentManager(), this);
                break;
            case R.id.edit_layout:
                mController.changeFocus(edit_desc);
                break;
        
    

AddDiaryFragment的layout

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        android:layout_marginStart="10dp"
        android:layout_marginEnd="10dp"
        android:orientation="vertical">
        <EditText
            android:id="@+id/edit_add_title"
            android:hint="@string/add_title_hint"
            android:minLines="1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />
    </LinearLayout>
    <LinearLayout
        android:id="@+id/edit_layout"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:layout_marginTop="5dp"
        android:layout_marginStart="10dp"
        android:layout_marginEnd="10dp"
        android:layout_marginBottom="10dp">
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:paddingStart="5dp"
            android:paddingTop="5dp"
            android:paddingEnd="5dp"
            android:paddingBottom="5dp"
            android:background="@drawable/edit_background">
            <EditText
                android:id="@+id/edit_add_desc"
                android:hint="@string/add_title_description"
                android:gravity="top"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:scrollbars="vertical"
                android:background="@null"/>
        </LinearLayout>
    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:orientation="horizontal">
        <Button
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