sqllite帮助文件

public class AnyDBAdapter {     private static final String TAG = "AnyDBAdapter";     private DatabaseHelper mDbHelper;     private static SQLiteDatabase mDb;     //make sure this matches the     //package com.MyPackage;     //at the top of this file     private static String DB_PATH = "/data/data/com.MyPackage/databases/";     //make sure this matches your database name in your assets folder     // my database file does not have an extension on it     // if yours does     // add the extention     private static final String DATABASE_NAME = "data";     //Im using an sqlite3 database, I have no clue if this makes a difference or not     private static final int DATABASE_VERSION = 3;     private final Context adapterContext;     public AnyDBAdapter(Context context) {         this.adapterContext = context;     }     public QuestDBAdapter open() throws SQLException {         mDbHelper = new DatabaseHelper(adapterContext);         try {             mDbHelper.createDataBase();         } catch (IOException ioe) {             throw new Error("Unable to create database");         }         try {             mDbHelper.openDataBase();         } catch (SQLException sqle) {             throw sqle;         }         return this;     }     //Usage from outside     // AnyDBAdapter dba = new AnyDBAdapter(contextObject); //in my case contextObject is a Map     // dba.open();     // Cursor c = dba.ExampleSelect("Rawr!");     // contextObject.startManagingCursor(c);     // String s1 = "", s2 = "";     // if(c.moveToFirst())     // do {     //  s1 = c.getString(0);     //  s2 = c.getString(1);     //  } while (c.moveToNext());     // dba.close();     public Cursor ExampleSelect(string myVariable)     {         String query = "SELECT locale, ? FROM android_metadata";         return mDb.rawQuery(query, new String[]{myVariable});     }     //Usage     // AnyDBAdatper dba = new AnyDBAdapter(contextObjecT);     // dba.open();     // dba.ExampleCommand("en-CA", "en-GB");     // dba.close();     public void ExampleCommand(String myVariable1, String myVariable2)     {         String command = "INSERT INTO android_metadata (locale) SELECT ? UNION ALL SELECT ?";         mDb.execSQL(command, new String[]{ myVariable1, myVariable2});     }     public void close() {         mDbHelper.close();     }     private static class DatabaseHelper extends SQLiteOpenHelper {         Context helperContextbackground-color: transparent; margin: 0px; color: #000000; font-size: 14px; vertical-align: baseline; border-