移动应用开发：Android Studio实现个人购菜/食谱管理系统

food_store_database helper;

    helper = new food_store_database(food_store.this, “basket.db”, null, 1);

        Button create_basket = (Button) findViewById(R.id.button1);

        create_basket.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                helper.getWritableDatabase();

            }

        });

索引

字段名称

数据类型

解释

0

id

整型

主键

1

name

字符串

名称

2

date

字符串

购入时间

3

price

实数

价格

4

time

实数

保鲜时长

5

timeunit

字符串

保鲜时长单位

6

number

实数

数目

7

numberunit

字符串

数目单位

8

classify

字符串

类别

9

address

字符串

图片地址

    public  static final String CREATE_basket=”create table basket(“

            +”id integer primary key autoincrement,”

            + “name text,”

            + “date text,”

            + “price real,”

            + “time real,”

            + “timeunit text,”

            + “number real,”

            + “numberunit text,”

            + “classify text,”

            + “address text)”;

 db.execSQL(CREATE_basket);

image_uri=FileProvider.getUriForFile(food_add.this,"com.example.Basket.fileprovider",outputImage); Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");

intent.putExtra(MediaStore.EXTRA_OUTPUT, image_uri);

startActivityForResult(intent, 1);

  check_classify[0] =classify[position];

                //准备数据 在此查询数据库

                String name;

                String path;

                //需要获取名称与图片路径

                Cursor cursor_food = db.rawQuery("select * from Basket where classify =, new String[]{check_classify[0]});

//准备菜篮食物列表listview_

                ListView listView_ = (ListView) findViewById(R.id.food_list);

                //准备food_list 适配器

                FoodAdaper adapter_ = new FoodAdaper(basket_food_.this, R.layout.fooditem, foodList);

                listView_.setAdapter(adapter_);

                listView_.setOnItemClickListener(new AdapterView.OnItemClickListener() {

public void onItemClick(AdapterView

                int jcdun;

                for(jcdun=0;jcdun

                    View tv = listView_classify.getChildAt(jcdun);

                    tv.setBackgroundColor(Color.parseColor("#f7f7f7"));

                    //利用整数jcdun遍历整个listview

                    //将所有的背景色设置为默认的灰色

                }

                listView_classify.getChildAt(

                        position-listView_classify.getFirstVisiblePosition())

                        .setBackgroundColor(Color.parseColor("#fd8e0a"));

                //将选中的方框背景色修改为橙色

  RadioGroup radioGroup = (RadioGroup) findViewById(R.id.food_tap);

        RadioButton radioButton = (RadioButton) findViewById(radioGroup.getCheckedRadioButtonId());

        TextView textView = (TextView) findViewById(R.id.food_top_title);

        radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {

            @Override

            public void onCheckedChanged(RadioGroup group, int checkedId) { 

                if (checkedId == R.id.food_tab_home) {

                    textView.setText("首页");

                    Intent it = new Intent(getApplicationContext(), home_.class);

                    startActivity(it);

                } else if (checkedId == R.id.food_tab_book) {

                    textView.setText("食谱");

                    Intent it = new Intent(getApplicationContext(), book.class);

                    startActivity(it);

                } else if (checkedId == R.id.food_tab_food) {

                    textView.setText("菜篮");

                } else if (checkedId == R.id.food_tab_my) {

                    textView.setText("我的");

     &