Android的SQL錯誤，不會創建表

Question

我是新來的編程機器人，我試圖做一個SQLite數據庫，但我一直得到這個錯誤

06-05 17:10:59.164: ERROR/AndroidRuntime(268): FATAL EXCEPTION: main 

06-05 17:10:59.164: ERROR/AndroidRuntime(268): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.c.notes/com.c.notes.Notes}: android.database.sqlite.SQLiteException: no such column: _id: , while compiling: SELECT _id, title, body FROM note 

我讀了其他人有同樣的作爲我的問題，但沒有任何解決方案正在工作。 這裏是我的數據庫適配器類，我認爲這個問題是

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

public class NotesDataBase { 

/* public static final String Note_TITLE = "noteTitle"; 
public static final String Note = "notee"; //these dont work must need other form for sql to work 
public static final String NoteID = "Noteid"; 
*/ 
    public static final String KEY_TITLE = "title"; 
    public static final String KEY_BODY = "body"; 
    public static final String KEY_ROWID = "_id"; 

private static final String Iden = "notesLinkCable"; 
private ACTNotesDBBuddy DatBuddy;//dbhelper was a coni 
private SQLiteDatabase ACTNotesDB; 
/** private static final String Create_DataBase = 
     "create table note (Noteid integer primary key autoincrement, " 
     + "noteTitle text not null, notee text not null);"; 
*/ 
private static final String DATABASE_CREATE = 
     "create table notes (_id integer primary key autoincrement, " 
     + "title text not null, body text not null);"; 

private static final String DBname = "DatBass"; 
private static final String DatBassTable = "note"; 
private static final int DatBassVER = 2; 

private final Context coni; 



private static class ACTNotesDBBuddy extends SQLiteOpenHelper { 

    ACTNotesDBBuddy(Context context){ 
     super(context, DBname, null, DatBassVER); 
    } 

@Override//1 
public void onCreate(SQLiteDatabase sld){ 
    sld.execSQL(DATABASE_CREATE);//so the data has so bs stuff pushed in it already lol 
} 

@Override//2 
public void onUpgrade(SQLiteDatabase slld, int old, int newV){ 
    Log.w(Iden, "I guess I'm upgrading sdl from ver" + old + " to " + newV + 
       " ps I hear this will kill off the old king and knights saved");//this is a logCat tag I believe anyway this kills old data for an update...wont be doing that 

     slld.execSQL("DROP TABLE IF EXISTS " + KEY_TITLE); 
    onCreate(slld); 
} 

} 
//3 
public NotesDataBase(Context con){ 
    this.coni=con; 
} 
//4 
public NotesDataBase open() throws SQLException{ 
    DatBuddy = new ACTNotesDBBuddy(coni); 
    ACTNotesDB =DatBuddy.getWritableDatabase(); 
    return this; 
} 
//5 
public void close(){ 
    DatBuddy.close(); 
} 
    //6 a 10 
public long createNote(String name, String body){ 
    ContentValues Orgin = new ContentValues(); 
    Orgin.put(KEY_TITLE, name); 
    Orgin.put(KEY_BODY,body);//my intial thought is this will over right each other but i believe its kinda like a stackish thing :) 

    return ACTNotesDB.insert(DatBassTable ,null,Orgin); 
} 

//7a6 
public boolean deleteNote(long locoRow){ 
    return ACTNotesDB.delete(DatBassTable,KEY_ROWID + "=" + locoRow,null)>0; 
} 
//8 
public Cursor fetchAllNotes(){ 
    return ACTNotesDB.query(DatBassTable, new String []{ KEY_ROWID,KEY_TITLE,KEY_BODY}, null, null, null, null, null); 
    } 



//9a7 
public Cursor fetchNote(long rid) throws SQLException{ 
    Cursor cursor = ACTNotesDB.query(true, DatBassTable, new String [] {KEY_ROWID,KEY_TITLE,KEY_BODY}, KEY_ROWID +"="+rid, null, null, null, null, null); 

    if(cursor != null){ 
     cursor.moveToFirst(); 
    } 
    return cursor; 
} 
//10 
    public boolean updateNote(long loco, String name, String note) { 
     ContentValues info = new ContentValues(); 
     info.put(KEY_TITLE, name); 
     info.put(KEY_BODY, note); 
     return ACTNotesDB.update(DatBassTable, info, KEY_ROWID + "=" + loco, null) > 0; 
    } 




} 

Answer 1

要查詢數據庫中的表名變量保存爲「注」該表。用「s」創建表格作爲「註釋」。