//建立資料庫

package com.liyulei.sqlite;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
public class MyOpenHelper extends SQLiteOpenHelper {

    public MyOpenHelper(Context context) {
        //傳進來的上下文環境
        // 資料庫檔案的名字
        // 遊標工廠，遊標等同於結果集，傳null使用預設工廠
 
        // 版本號，不能小於1，用於升級
super(context, "people.db", null,1);
}
    //建立資料庫時呼叫
@Override
public void onCreate(SQLiteDatabase db) {
        //建立表(_id主鍵)(autoincrement自增長)
db.execSQL("create table people(_id integer primary key autoincrement，name char(10),phone char(20),salary integer(10))");
//System.out.println("建立資料庫");
 
}
    //升級資料庫時呼叫
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        System.out.println("升級資料庫");
}
}

public class ApplicationTest extends ApplicationTestCase<Application> {
    public ApplicationTest() {
        super(Application.class
 
);
}

    private MyOpenHelper myOpenHelper ;
    private SQLiteDatabase db;
//測試方法執行前呼叫
@Override
protected void setUp() throws Exception {
        myOpenHelper = new MyOpenHelper(getContext());
db = myOpenHelper.getWritableDatabase();
}
   /* //摧毀方法（落淚方法）
    @Override
    protected void tearDown() throws Exception {
        super.tearDown();
        db.close();
    }*/
public void test(){
        //獲取虛擬上下文、資料庫名字
MyOpenHelper myOpenHelper = new MyOpenHelper(getContext());
//如果資料庫不存在，先建立再開啟；如果存在，直接開啟
SQLiteDatabase db = myOpenHelper.getWritableDatabase();
}
    public void insert() {
        db.execSQL("insert into people(name,phone,salary) values(?,?,？)",new Object[]{"小明","138765", 13000});
db.execSQL("insert into people(name,phone,salary) values(?,?,？)",new Object[]{"小紅","678393", 13130});
db.execSQL("insert into people(name,phone,salary) values(?,?,？)",new Object[]{"小麗","344745", 43280});
db.execSQL("insert into people(name,phone,salary) values(?,?,？)",new Object[]{"小朋","278393", 1430});
db.execSQL("insert into people(name,phone,salary) values(?,?,？)",new Object[]{"小民","544745", 15380});
db.close();
}
    public void delete(){
        db.execSQL("delete from people where name=?",new Object[]{"小明"});
db.close();
}
    public void update(){
        db.execSQL("updata peole set salary=?where name=?",new Object[]{"100000","小紅"});
db.close();
}
    public void select(){
        Cursor cursor = db.rawQuery("select name,phone from people ",null);
//把指標移動到下一行
while(cursor.moveToNext()){
            //先通過列名獲取列索引
String name = cursor.getString(Integer.parseInt(cursor.getColumnName(Integer.parseInt("name"))));
String phone = cursor.getString(Integer.parseInt(cursor.getColumnName(Integer.parseInt("phone"))));
System.out.println(name+";"+phone);
}
    }
    public void insertApi(){
        ContentValues values = new ContentValues();
values.put("name","小曉");
values.put("phone","132443");
values.put("salary","12342");
db.insert("people",null,values);
}
    public void deleteApi(){
        int i = db.delete("people","_id = ?",new String[]{"6"});
System.out.println(i);
}
    public void updataApi(){
        ContentValues values = new ContentValues();
values.put("name","小民的汽車");
        int i = db.update("people", values ,"_id = ?",new String[]{"5"});
System.out.println(i);
}
    public void selectApi(){
        //arg1:查詢的欄位
        //arg1:查詢的where條件
        //arg1:where條件的佔位符
        //arg1:查詢的欄位
Cursor cursor = db.query("people",null,null,null,null,null,null,null);
        while (cursor.moveToNext()){
            String name = cursor.getString(1);
String phone = cursor.getString(2);
String salary = cursor.getString(3);
}
    }