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第 11 屆 iThome 鐵人賽
DAY 18
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Mobile Development

Android Studio 學習交流系列 第 18 篇

[Day18]Android學習-資料庫介紹-資料庫實作(3)

11th鐵人賽
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噹噹噹~00:00這個時候來發篇文章吧!
/images/emoticon/emoticon33.gif/images/emoticon/emoticon01.gif
接續前兩篇
[Day16]Android學習-資料庫介紹-資料操縱(1)
[Day17]Android學習-資料庫介紹-SQLiteDataBase類別(2)
資料庫的介紹，這篇就來實際操作吧!

首先，建立兩種版面配置，分別為ListView選項的設計以及資料庫操作介面。

activity_main.xml

https://ithelp.ithome.com.tw/upload/images/20191003/20121149q8ZQKFTk7b.png
完整程式碼

<?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">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <com.google.android.material.textfield.TextInputLayout

            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1">

            <com.google.android.material.textfield.TextInputEditText
                android:id="@+id/edtId"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:hint="ID"/>
        </com.google.android.material.textfield.TextInputLayout>
        <com.google.android.material.textfield.TextInputLayout

            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1">

            <com.google.android.material.textfield.TextInputEditText
                android:id="@+id/edtName"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:hint="水果名稱"/>
        </com.google.android.material.textfield.TextInputLayout>
        <com.google.android.material.textfield.TextInputLayout

            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1">

            <com.google.android.material.textfield.TextInputEditText
                android:id="@+id/edtPrice"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:hint="水果價格"/>
        </com.google.android.material.textfield.TextInputLayout>

    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <Button
            android:id="@+id/btnAppend"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="新增" />

        <Button
            android:id="@+id/btnUpdate"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="更新" />

        <Button
            android:id="@+id/btnSelect"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="查詢" />

    </LinearLayout>

    <ListView
        android:id="@+id/lstView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
/>
</LinearLayout>
  • 主頁面提供資料庫操作
  • TextInputLayout:hint不會因為使用者輸入而消失，提示會在左上方顯示

fruit_layout.xml

https://ithelp.ithome.com.tw/upload/images/20191003/20121149Krpbbyp1Ky.png
完整程式碼

<RelativeLayout 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="wrap_content">


    <TextView
        android:id="@+id/txtId"
        android:layout_width="wrap_content"
        android:layout_height="50dp"
        android:layout_margin="10dp"
        android:textSize="40dp"
        android:text="ID"
        />

    <ImageView
        android:id="@+id/imgView"
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:layout_margin="10dp"
        android:layout_toRightOf="@id/txtId"
        tools:srcCompat="@tools:sample/avatars" />

    <TextView
        android:id="@+id/txtName"
        android:layout_width="wrap_content"
        android:layout_height="25dp"
        android:textSize="20dp"
        android:layout_marginLeft="30dp"
        android:layout_toRightOf="@id/imgView"
        android:text="Name"
        android:layout_alignTop="@+id/imgView"

        />

    <TextView
        android:id="@+id/txtPrice"
        android:layout_width="wrap_content"
        android:layout_height="25dp"
        android:layout_alignBottom="@+id/imgView"
        android:layout_marginLeft="30dp"
        android:layout_toRightOf="@id/imgView"
        android:text="Price"
        android:textSize="20dp" />


</RelativeLayout>
  • 客製化的選單設計
  • 3個TextView與1個ImageView分別顯示水果ID、名稱、價格以及水果圖片

UI設計完成後，接者要設計控制流程，開發者使各元件各自擁有預期的功能。

FruitDB.java

public class FruitDB {
    private SQLiteDatabase db=null;
    private final static String TABLE_NAME="TableFruit";
    private final static String _ID="_id";
    private final static String NAME="name";
    private final static String PRICE="price";
    private final static String CREATE_TABLE="CREATE TABLE "+TABLE_NAME+" ("+_ID+" INTEGER                                                  PRIMARY KEY,"+NAME+" TEXT,"+PRICE+" INTEGER )";
    private Context context; 
    ......
    }
  • SQLiteDatabase db 建立SQLiteDatabase物件
  • TABLE_NAME 建立欄位名稱
  • _ID 水果編排編號
  • NAME 水果名稱
  • PRICE 水果價格
  • CREATE_TABLE 建立水果表格，使用SQL語法編寫
    public void open() throws SQLException {
        try{
            db=context.openOrCreateDatabase("fruitdb.db",Context.MODE_PRIVATE,null);
            db.execSQL(CREATE_TABLE);

        }
        catch (Exception e){
            Toast.makeText(context,"fruitdb.db 已建立",Toast.LENGTH_LONG).show();
        }
    }
  • db=context.openOrCreateDatabase("fruitdb.db",Context.MODE_PRIVATE,null) 建立資料庫並指定權限 
    public void append(String name,String price){
        String insert_text="INSERT INTO "+TABLE_NAME+"( "+NAME+","+PRICE+") values                       ('"+name+"',"+price+")";
        db.execSQL(insert_text);

    }
  • "INSERT INTO "+TABLE_NAME+"( "+NAME+","+PRICE+") values('"+name+"',"+price+")";
    insert-SQL語法 
    public void update(String name,String price,long id){
        String update_text="UPDATE "+TABLE_NAME+" SET "+NAME+"='"+name+"',"+PRICE+"="+price+" WHERE "+_ID+"="+id;
        db.execSQL(update_text);
    }
  • "UPDATE "+TABLE_NAME+" SET "+NAME+"='"+name+"',"+PRICE+"="+price+" WHERE "+_ID+"="+id;
    update-SQL語法 
    public void delete(long id){
        String delete_text="DELETE FROM "+TABLE_NAME+" WHERE "+_ID+"="+id;
        db.execSQL(delete_text);
  • "DELETE FROM "+TABLE_NAME+" WHERE "+_ID+"="+id; delete-SQL語法 
    public Cursor select(long id){
        String select_text="SELECT * FROM "+TABLE_NAME+" WHERE "+_ID+"="+id;
        Cursor cursor=db.rawQuery(select_text,null);
        return cursor;
    }
    public Cursor select_all(){
        String select_text="SELECT * FROM "+TABLE_NAME;
        Cursor cursor=db.rawQuery(select_text,null);
        return cursor;
    }
  • 查詢資料回傳Cursor型別
  • SELECT * FROM ... select-SQL語法

完整程式碼

public class FruitDB {
    //建立SQLiteDatabase物件
    private SQLiteDatabase db=null;

    private final static String TABLE_NAME="TableFruit";
    //    建立欄位名稱
    //    水果編排編號
    private final static String _ID="_id";
    //    水果名稱
    private final static String NAME="name";
    //    水果價格
    private final static String PRICE="price";
    //    建立水果表格
    private final static String CREATE_TABLE="CREATE TABLE "+TABLE_NAME+" ("+_ID+" INTEGER PRIMARY KEY,"
            +NAME+" TEXT,"+PRICE+" INTEGER )";
    private Context context;

    //    FruitDB的建構式
    public FruitDB(Context context){
        this.context=context;
    }
    //     建立open()方法，資料庫存執行開啟資料庫，尚未存在則建立資料庫
    public void open() throws SQLException {
        try{
            //        建立資料庫並指定權限
            db=context.openOrCreateDatabase("fruitdb.db",Context.MODE_PRIVATE,null);
            //        建立表格
            db.execSQL(CREATE_TABLE);

        }
        catch (Exception e){

            Toast.makeText(context,"fruitdb.db 已建立",Toast.LENGTH_LONG).show();
        }

    }

    //    建立新增、修改(更新)、刪除，資料操作
    //    execSQL完整輸入SQL語法實現，資料操作

    //    建立方法append()
    public void append(String name,String price){
        String insert_text="INSERT INTO "+TABLE_NAME+"( "+NAME+","+PRICE+") values ('"+name+"',"+price+")";
        db.execSQL(insert_text);

    }
    //    建立方法update()
    public void update(String name,String price,long id){
        String update_text="UPDATE "+TABLE_NAME+" SET "+NAME+"='"+name+"',"+PRICE+"="+price+" WHERE "+_ID+"="+id;
        db.execSQL(update_text);
    }
    //    建立方法delete()
    public void delete(long id){
        String delete_text="DELETE FROM "+TABLE_NAME+" WHERE "+_ID+"="+id;
        db.execSQL(delete_text);

    }
    //    建立查詢方法select()，查詢單筆資料
    //    rawQuery完整輸入SQL語法實現資料查詢
    public Cursor select(long id){
        String select_text="SELECT * FROM "+TABLE_NAME+" WHERE "+_ID+"="+id;
        Cursor cursor=db.rawQuery(select_text,null);
        return cursor;
    }

    //    建立查詢方法select_all()，查詢所有資料
    //    rawQuery完整輸入SQL語法實現資料查詢
    public Cursor select_all(){
        String select_text="SELECT * FROM "+TABLE_NAME;
        Cursor cursor=db.rawQuery(select_text,null);
        return cursor;
    }
}

MainActivity.java

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        findViews();
        db=new FruitDB(MainActivity.this);
        db.open();
        cursor=db.select_all();
        UpdateListView(cursor);
    }
  • cursor=db.select_all();與UpdateListView(cursor);開啟app時查詢資料庫所有資料並更新至ListView 
lstView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
      @Override
      public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
             cursor.moveToPosition(position);
             edtId.setText(cursor.getString(0));
             edtName.setText(cursor.getString(1));
             edtPrice.setText(cursor.getString(2));
        }
    });
  • cursor.moveToPosition(position); cursor指標指向選單位置的資料
  • 點選選單後，將資料回傳至EditText
    lstView.setSelector(android.R.drawable.alert_light_frame);
  • setSelector 當選單被點選時，有被選取的特效 
lstView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
   @Override
  public boolean onItemLongClick(AdapterView<?> adapterView, View view, int position, long id) {
      try{
           cursor.moveToPosition(position);
           edtId.setText(cursor.getString(0));
           edtName.setText(cursor.getString(1));
           edtPrice.setText(cursor.getString(2));
           final int _id=Integer.parseInt(cursor.getString(0));
           String name=cursor.getString(1);
           String price=cursor.getString(2);
           new AlertDialog.Builder(MainActivity.this)
               .setMessage("確定刪除\nID="+id+"\n"+name+"\n售價="+price)
               .setPositiveButton("確認", new DialogInterface.OnClickListener() {
               @Override
               public void onClick(DialogInterface dialogInterface, int i) {
                  //                    執行刪除動作
                  db.delete(cursor.getInt(0));
                  //                    更新顯示畫面
                  UpdateListView(cursor=db.select_all());
}
        }).setNegativeButton("取消", new DialogInterface.OnClickListener() {
          @Override
          public void onClick(DialogInterface dialogInterface, int i) {
}
           }).show();
                }catch (Exception e){
                    Toast.makeText(MainActivity.this,"刪除失敗",Toast.LENGTH_LONG).show();
                }
                return false;
            }
        });
    }
  • setOnItemLongClickListener 偵聽使用者是否長按選項
  • AlertDialog 跳出訊息與選項
  • 長按選項後，將資料回傳至EditText並詢問是否刪除此選項
                case R.id.btnAppend:{
                    try{
                        db.append(edtName.getText().toString(),edtPrice.getText().toString());
                        UpdateListView(cursor=db.select_all());
                    }catch (Exception e){
                        Toast.makeText(MainActivity.this,"新增失敗",Toast.LENGTH_LONG).show();
                    }
                    break;
                }
  • db.append與UpdateListView() 新增資料並更新選單 
                case R.id.btnUpdate:{
                    try{
                        db.update(edtName.getText().toString(), edtPrice.getText().toString(),Integer.parseInt(edtId.getText().toString()));
                        UpdateListView(cursor=db.select_all());
                        imm.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS);
                    }catch (Exception e){
                        Toast.makeText(MainActivity.this,"更新失敗",Toast.LENGTH_LONG).show();
                    }
                    break;
                }
  • db.update與UpdateListView() 修改資料並更新選單 
    case R.id.btnSelect:{
         Cursor select_cursor;
         select_cursor=db.select(Integer.parseInt(edtId.getText().toString()));
         UpdateListView(select_cursor);
         break;
     }
  • db.select與UpdateListView() 查詢資料並將查詢到的資料更新至選單 
    public void UpdateListView(Cursor fruitcursor){
        MyAdapter adapter =new MyAdapter(fruitcursor);
        lstView.setAdapter(adapter);
        cursor=fruitcursor;
    }
  • MyAdapter adapter =new MyAdapter(fruitcursor); 建立客製化的Adapter物件 
    public class MyAdapter extends BaseAdapter{
        private Cursor cursor;
        public MyAdapter(Cursor cursor){
            this.cursor=cursor;
        }
        @Override
        public int getCount() {
            return cursor.getCount();
        }

        @Override
        public Object getItem(int position) {
            return null;
        }

        @Override
        public long getItemId(int position) {
            cursor.moveToPosition(position);
            return cursor.getInt(0);
        }

        @Override
        public View getView(int position, View view, ViewGroup viewGroup) {
            View getview=view;
            cursor.moveToPosition(position);
            getview=getLayoutInflater().inflate(R.layout.fruit_layout,null);
            ImageView imgView=(ImageView)getview.findViewById(R.id.imgView);
            TextView txtName=(TextView)getview.findViewById(R.id.txtName);
            txtName.setText(cursor.getString(1));
            TextView txtPrice=(TextView)getview.findViewById(R.id.txtPrice);
            txtPrice.setText(String.valueOf(cursor.getString(2)));
            TextView txtId=(TextView)getview.findViewById(R.id.txtId);
            txtId.setText(String.valueOf(cursor.getString(0)));
            switch (cursor.getString(1).trim()){
                     case "apple":{
                        imgView.setImageResource(R.drawable.apple);
                        break;
                    }
                    case "banana": {
                        imgView.setImageResource(R.drawable.banana);
                        break;
                    }
                    case "orange":{
                        imgView.setImageResource(R.drawable.orange);
                        break;
                    }
                    case "strawberry":{
                        imgView.setImageResource(R.drawable.strawberry);
                        break;
                    }
                    case "grape": {
                        imgView.setImageResource(R.drawable.grape);
                        break;
                    }
                    default:{
                        imgView.setImageResource(R.drawable.fruit);
                        Log.d("debug",cursor.getString(1));
                        break;
                    }
                }
            return getview;
        }
    }
  • 客製化自己的Adapter繼承baseAdapter類別請參見 
            getview=getLayoutInflater().inflate(R.layout.fruit_layout,null);
            ImageView imgView=(ImageView)getview.findViewById(R.id.imgView);
            TextView txtName=(TextView)getview.findViewById(R.id.txtName);
            txtName.setText(cursor.getString(1));
            TextView txtPrice=(TextView)getview.findViewById(R.id.txtPrice);
            txtPrice.setText(String.valueOf(cursor.getString(2)));
            TextView txtId=(TextView)getview.findViewById(R.id.txtId);
            txtId.setText(String.valueOf(cursor.getString(0)));
  • 載入自行設計的選單fruit_layout.xml
  • 取得個元件的ID
  • cursor.getString() 取得資料庫某一列的欄位資料，0代表第一欄、1代表第二欄，以此類推... 
switch (cursor.getString(1).trim()){
                     case "apple":{
                        imgView.setImageResource(R.drawable.apple);
                        break;
                    }
                    case "banana": {
                        imgView.setImageResource(R.drawable.banana);
                        break;
                    }
                    case "orange":{
                        imgView.setImageResource(R.drawable.orange);
                        break;
                    }
                    case "strawberry":{
                        imgView.setImageResource(R.drawable.strawberry);
                        break;
                    }
                    case "grape": {
                        imgView.setImageResource(R.drawable.grape);
                        break;
                    }
                    default:{
                        imgView.setImageResource(R.drawable.fruit);
                        Log.d("debug",cursor.getString(1));
                        break;
                    }
  • cursor.getString(1).trim() 依據資料庫水果的名稱(cursor.getString(1)為第一欄位_id)對照應該放置的圖片，其餘的水果由default定義

完整程式碼

public class MainActivity extends AppCompatActivity {
    //    建立欄位名稱
    //    水果編排編號
    private final static String _ID="_id";
    //    水果名稱
    private final static String NAME="name";
    //    水果價格
    private final static String PRICE="price";
    private ListView lstView;
    private Button btnAppend,btnUpdate,btnSelect;
    private TextInputEditText edtId,edtName,edtPrice;
    private FruitDB db;
    private Cursor cursor;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //        尋找各個元件的ID
        findViews();
        //        建立FruitDB物件db
        db=new FruitDB(MainActivity.this);
        //        查詢目前資料庫擁有的資料
        db.open();
        cursor=db.select_all();
        //        更新ListView重新顯示資料
        UpdateListView(cursor);


    }


    private void findViews() {
        btnAppend=(Button)findViewById(R.id.btnAppend);
        btnUpdate=(Button)findViewById(R.id.btnUpdate);
        btnSelect=(Button)findViewById(R.id.btnSelect);
        edtId=(TextInputEditText)findViewById(R.id.edtId);
        edtName=(TextInputEditText)findViewById(R.id.edtName);
        edtPrice=(TextInputEditText)findViewById(R.id.edtPrice);
        lstView=(ListView)findViewById(R.id.lstView);
        //        建立按鈕的偵聽器
        btnAppend.setOnClickListener(listener);
        btnUpdate.setOnClickListener(listener);
        btnSelect.setOnClickListener(listener);
        //        匿名類別偵聽

        lstView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
                cursor.moveToPosition(position);
                edtId.setText(cursor.getString(0));
                edtName.setText(cursor.getString(1));
                edtPrice.setText(cursor.getString(2));
            }
        });
        lstView.setSelector(android.R.drawable.alert_light_frame);
        lstView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
            @Override
            public boolean onItemLongClick(AdapterView<?> adapterView, View view, int position, long id) {
                try{
                    cursor.moveToPosition(position);
                    edtId.setText(cursor.getString(0));
                    edtName.setText(cursor.getString(1));
                    edtPrice.setText(cursor.getString(2));
                    final int _id=Integer.parseInt(cursor.getString(0));
                    String name=cursor.getString(1);
                    String price=cursor.getString(2);
                    new AlertDialog.Builder(MainActivity.this)
                            .setMessage("確定刪除\nID="+id+"\n"
                                    +name+"\n售價="+price)
                            .setPositiveButton("確認", new DialogInterface.OnClickListener() {
                                @Override
                                public void onClick(DialogInterface dialogInterface, int i) {
                                        //                    執行刪除動作
                                        db.delete(cursor.getInt(0));
                                        //                    更新顯示畫面
                                        UpdateListView(cursor=db.select_all());

                                }
                            })
                            .setNegativeButton("取消", new DialogInterface.OnClickListener() {
                                @Override
                                public void onClick(DialogInterface dialogInterface, int i) {

                                }
                            })
                            .show();
                }catch (Exception e){
                    Toast.makeText(MainActivity.this,"刪除失敗",Toast.LENGTH_LONG).show();
                }
                return false;
            }
        });
    }

    public Button.OnClickListener listener=new Button.OnClickListener(){

        @Override
        public void onClick(View view) {
            switch(view.getId()){
                case R.id.btnAppend:{
                    try{

                        //                    執行新增動作
                        db.append(edtName.getText().toString(),edtPrice.getText().toString());
                        //                    更新顯示畫面
                        UpdateListView(cursor=db.select_all());
                    }catch (Exception e){
                        Toast.makeText(MainActivity.this,"新增失敗",Toast.LENGTH_LONG).show();
                    }

                    break;

                }
                case R.id.btnUpdate:{
                    try{
                        //                    執行修改動作
                        db.update(edtName.getText().toString(), edtPrice.getText().toString(),Integer.parseInt(edtId.getText().toString()));
                        //                    更新顯示畫面
                        UpdateListView(cursor=db.select_all());
                    }catch (Exception e){

                        Toast.makeText(MainActivity.this,"更新失敗",Toast.LENGTH_LONG).show();
                    }
                    break;
                }

                case R.id.btnSelect:{
                    Cursor select_cursor;
                    select_cursor=db.select(Integer.parseInt(edtId.getText().toString()));
                    UpdateListView(select_cursor);
                    break;
                }
            }
        }
    };

    //    建立更新ListView的方法
    public void UpdateListView(Cursor fruitcursor){
        MyAdapter adapter =new MyAdapter(fruitcursor);
        adapter.notifyDataSetChanged();
        lstView.setAdapter(adapter);
        cursor=fruitcursor;
    }

    public class MyAdapter extends BaseAdapter{
        private Cursor cursor;
        public MyAdapter(Cursor cursor){
            this.cursor=cursor;
        }
        @Override
        public int getCount() {
            return cursor.getCount();
        }

        @Override
        public Object getItem(int position) {
            return null;
        }

        @Override
        public long getItemId(int position) {
            cursor.moveToPosition(position);
            return cursor.getInt(0);
        }

        @Override
        public View getView(int position, View view, ViewGroup viewGroup) {
            View getview=view;
            cursor.moveToPosition(position);
            getview=getLayoutInflater().inflate(R.layout.fruit_layout,null);
            ImageView imgView=(ImageView)getview.findViewById(R.id.imgView);
            TextView txtName=(TextView)getview.findViewById(R.id.txtName);
            txtName.setText(cursor.getString(1));
            TextView txtPrice=(TextView)getview.findViewById(R.id.txtPrice);
            txtPrice.setText(String.valueOf(cursor.getString(2)));
            TextView txtId=(TextView)getview.findViewById(R.id.txtId);
            txtId.setText(String.valueOf(cursor.getString(0)));
            switch (cursor.getString(1).trim()){
                     case "apple":{
                        imgView.setImageResource(R.drawable.apple);
                        break;
                    }
                    case "banana": {
                        imgView.setImageResource(R.drawable.banana);
                        break;
                    }
                    case "orange":{
                        imgView.setImageResource(R.drawable.orange);
                        break;
                    }
                    case "strawberry":{
                        imgView.setImageResource(R.drawable.strawberry);
                        break;
                    }
                    case "grape": {
                        imgView.setImageResource(R.drawable.grape);
                        break;
                    }
                    default:{
                        imgView.setImageResource(R.drawable.fruit);
                        Log.d("debug",cursor.getString(1));
                        break;
                    }
                }
            return getview;
        }
    }
}

實測

新增資料
https://ithelp.ithome.com.tw/upload/images/20191003/20121149RuRmTLNS6t.png
https://ithelp.ithome.com.tw/upload/images/20191003/20121149Drhd4bYREw.png

更新資料
https://ithelp.ithome.com.tw/upload/images/20191003/20121149z1yVhR9y2j.png
https://ithelp.ithome.com.tw/upload/images/20191003/20121149f1cWrPfwv8.png

點擊選單效果及資料回傳至EditText
https://ithelp.ithome.com.tw/upload/images/20191003/20121149OXX3Za4RDr.png

https://ithelp.ithome.com.tw/upload/images/20191003/20121149YFEQdl5rsF.png

查詢資料結果
https://ithelp.ithome.com.tw/upload/images/20191003/20121149As5JEpz8CS.png

刪除資料ID=5
https://ithelp.ithome.com.tw/upload/images/20191003/20121149DHma4MrS2G.png
https://ithelp.ithome.com.tw/upload/images/20191003/20121149PfkIyWNeCe.png
https://ithelp.ithome.com.tw/upload/images/20191003/201211491ybaMMnegj.png

水果圖片來源請參考

這篇文章較長，辛苦大家了~

若文章有誤，歡迎大家提出建議。

Thank you for your time.

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