android.database.sqlite.SQLITeException：没有这样的表格：编译时的管理：INSERT INTO ... etc

Question

我想在我的数据库中添加另一个表格，第一个表格成功创建，数据也被成功插入。但当我试图添加另一个表，然后插入数据...我得到这个错误（没有这样的表，而编译插入到....等

我在谷歌搜索和这里也在stackoverflow，我发现有些人的代码与我的相似，有人不得不在他的代码中添加（onUpgrade方法），所以它会自动增加数据库版本....但是我已经写了它，我很困惑，任何帮助请.. ..

这是数据库代码：

package group.com; 
import android.content.ContentValues; 
import android.content.Context; 
import android.database.SQLException; 
import android.database.sqlite.SQLiteDatabase; 
import android.database.sqlite.SQLiteOpenHelper; 
import android.util.Log; 

public class DBAdapter { 


public static final String KEY_Admin_ROWID = "_id"; 
public static final String KEY_Admin_fullName = "adminFullName"; 
public static final String KEY_Admin_UserName = "AdminUserName"; 
public static final String KEY_Admin_Password = "AdminPassword"; 

private static final String TAG = "DBAdapter"; 
private static final String DATABASE_NAME = "RamiTariq"; 

private static final String DATABASE_TABLE = "info"; 
private static final String DATABASE_TABLE_Admin = "admin"; 

private static final int DATABASE_VERSION = 1; 
private static final String DATABASE_CREATE = "create table " 
    + DATABASE_TABLE + " (" + KEY_ROWID 
    + " integer primary key autoincrement, " 
    + KEY_NAME + " text not null, " 
    + KEY_PSSWORD + " text not null , " 
    + KEY_F_NAME + " text not null ," 
    + KEY_DATE + " text not null," 
    + KEY_JOB + " text not null," 
    + KEY_ADDRESS + " text not null," 
    + KEY_PHONE + " text not null," 
    + KEY_NATIONAL_NUMBER + " text not null," 
    + KEY_MONEY_SHOULD_PAY + " text null," 
    + KEY_ACTUAL_MONEY + " text null);"; 


private static final String DATABASE_CREATE_ADMIN = "create table " 
    + DATABASE_TABLE_Admin + " (" + KEY_Admin_ROWID 
    + " integer primary key autoincrement, " 
    + KEY_Admin_fullName + " text not null, " 
    + KEY_Admin_UserName + " text not null, " 
    + KEY_Admin_Password + " text not null);"; 


private final Context context; 
private DatabaseHelper DBHelper; 
private SQLiteDatabase db; 

public DBAdapter(Context ctx) { 
    this.context = ctx; 
    DBHelper = new DatabaseHelper(context); 
} 

private static class DatabaseHelper extends SQLiteOpenHelper { 
    DatabaseHelper(Context context) { 
     super(context, DATABASE_NAME, null, DATABASE_VERSION); 
    } 


    public void onCreate(SQLiteDatabase db) { 
     try { 
      db.execSQL(DATABASE_CREATE); 
      db.execSQL(DATABASE_CREATE_ADMIN); 
     } catch (SQLException e) { 
      e.printStackTrace(); 
     } 
    } 

    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 
     Log.w(TAG, "Upgrading database from version " + oldVersion + " to " 
       + newVersion + ", which will destroy all old  data"); 
     db.execSQL("DROP TABLE IF EXISTS "+DATABASE_TABLE); 
     db.execSQL("DROP TABLE IF EXISTS "+DATABASE_TABLE_Admin); 
     onCreate(db); 
    } 
} 

// ---opens the database--- 
public DBAdapter open() throws SQLException { 
    db = DBHelper.getWritableDatabase(); 
    return this; 
} 

// ---closes the database--- 
public void close() { 
    DBHelper.close(); 
} 


//------insert an admin into the database----- 
public long insertAdmin(String full_name, String user_name, String password) { 
    ContentValues initialValues = new ContentValues(); 

    initialValues.put(KEY_Admin_fullName, full_name); 
    initialValues.put(KEY_Admin_UserName, user_name); 
    initialValues.put(KEY_Admin_Password,password); 

    return db.insert(DATABASE_TABLE_Admin, null,initialValues); 
} 


    } 

，这是活动代码：

package group.com; 

import android.app.Activity; 
import android.content.Intent; 
import android.os.Bundle; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.Toast; 


public class InsertAdmin extends Activity { 

DBAdapter db = new DBAdapter(this); 

EditText fullName, username, password, rePassword; 
Button insertAdmin; 

public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.insertadmin); 

    fullName = (EditText) findViewById(R.id.fullName); 
    username = (EditText) findViewById(R.id.username); 
    password = (EditText) findViewById(R.id.password); 
    rePassword = (EditText) findViewById(R.id.rePassword); 

    insertAdmin = (Button) findViewById(R.id.insertAdmin); 

    insertAdmin.setOnClickListener(new OnClickListener() { 

     public void onClick(View arg0) { 

      String fName = fullName.getText().toString(); 
      String uName = username.getText().toString(); 
      String pass = password.getText().toString(); 
      String rePass = rePassword.getText().toString(); 

      if(fName.length()==0 || uName.length()==0 || pass.length()==0 || rePass.length()==0) 
      { 
       displayMessage("Please Enter Full Data"); 
       return; 
      } 

      if (uName.length() == 0) 
      { 
       displayMessage("Enter username"); 
       return; 
      } 
      if (pass.length() == 0) 
      { 
       displayMessage("Enter The password"); 
       return; 
      } 


      if(pass.equals(rePass)) 
      { 
       db.open(); 
       long id = db.insertAdmin(fName, uName, pass); 


       if(id>0) 
       { 
        displayMessage(id + "\nSuccessfuly Inserted"); 

       } 
       else 
       { 
        displayMessage("Not Inserted"); 
       } 

       db.close(); 

       startActivity(new Intent(getBaseContext(),Admin.class)) ; 

      } 

      else 
       displayMessage("Your Passwords doesn't match"); 

     } 
    }); 

} 

public void displayMessage(String msg) 
{ 
    Toast.makeText(this, msg, Toast.LENGTH_SHORT).show(); 
} 

    } 

Answer 1

我通常使用此代码添加新表或attibute

try{ 
     String sql = "SELECT id FROM store;"; 
     Cursor cursor = db.rawQuery(sql, null); 
     cursor.close(); 
    } 
    catch(SQLiteException s){ 
     db.execSQL("create table store (id integer primary key, name text)"); } 

首次检查表是通过选择一些数据存在与否，如果不存在则创建该表

Answer 2

卸载你的应用程序，以便旧版本的数据库被删除。

您的数据库版本仍然是1，因此onUpgrade()未运行。数据库文件已存在，所以onCreate()未运行。已存在的数据库文件不包含您在当前版本onCreate()中创建的所有表格。