Back to project page AndroidLocalStorage.
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Apache License
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package com.example.androidlocalstorage; /* www .j ava 2s .c o m*/ import android.content.Context; import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteOpenHelper; import android.util.Log; /** * {@link SQLiteOpenHelper} that is used as replacement of the localStorage of the webviews. * @details this class should not be used. Everything about the localStorage through the application is already handled in HTMLFragment. * @author Diane */ public class LocalStorage extends SQLiteOpenHelper { private static LocalStorage mInstance; /** * the name of the table */ public static final String LOCALSTORAGE_TABLE_NAME = "local_storage_table"; /** * the id column of the table LOCALSTORAGE_TABLE_NAME */ public static final String LOCALSTORAGE_ID = "_id"; /** * the value column of the table LOCALSTORAGE_TABLE_NAME */ public static final String LOCALSTORAGE_VALUE = "value"; private static final int DATABASE_VERSION = 2; private static final String DATABASE_NAME = "local_storage.db"; private static final String DICTIONARY_TABLE_CREATE = "CREATE TABLE " + LOCALSTORAGE_TABLE_NAME + " (" + LOCALSTORAGE_ID + " TEXT PRIMARY KEY, " + LOCALSTORAGE_VALUE + " TEXT NOT NULL);"; /** * Returns an instance of LocalStorage * @param ctx : a Context used to create the database * @return the instance of LocalStorage of the application or a new one if it has not been created before. */ public static LocalStorage getInstance(Context ctx) { if (mInstance == null) { mInstance = new LocalStorage(ctx.getApplicationContext()); } return mInstance; } private LocalStorage(Context context) { super(context,DATABASE_NAME,null,DATABASE_VERSION); } @Override public void onCreate(SQLiteDatabase db) { db.execSQL(DICTIONARY_TABLE_CREATE); } @Override public void onUpgrade(SQLiteDatabase db,int oldVersion, int newVersion) { Log.w(LocalStorage.class.getName(), "Upgrading database from version " + oldVersion + " to " + newVersion + ", which will destroy all old data"); db.execSQL("DROP TABLE IF EXISTS " + LOCALSTORAGE_TABLE_NAME); onCreate(db); } }