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public class DBAdapter {
DatabaseHelper DBHelper;
Context context;
SQLiteDatabase db;
private static String DB_PATH = "/data/data/com.monapplication/databases/";
private static String DB_NAME = "produits.db";
private String myPath = DB_PATH + DB_NAME;
private final String MY_DATABASE_TABLE = "matable";
public String columnName;
public DBAdapter(Context context) {
this.context = context;
DBHelper = new DatabaseHelper(context);
}
public class DatabaseHelper extends SQLiteOpenHelper {
Context context;
public DatabaseHelper(Context context) {
/** nom de la base et n° de la version */
super(context, DB_NAME, null, 2);
this.context = context;
}
@Override
public void onCreate(SQLiteDatabase db) {
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}
}
public DBAdapter open() {
boolean dbExist = checkDataBase();
if (dbExist) {
} else {
db = DBHelper.getReadableDatabase();
try {
copyDataBase();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// db = DBHelper.getWritableDatabase();
}
return this;
}
private boolean checkDataBase() {
SQLiteDatabase checkDB = null;
try {
checkDB = SQLiteDatabase.openDatabase(myPath, null,
SQLiteDatabase.OPEN_READONLY);
} catch (SQLiteException e) {
// database does't exist yet.
}
if (checkDB != null) {
checkDB.close();
}
return checkDB != null ? true : false;
}
public void close() {
db.close();
}
private void copyDataBase() throws IOException {
// Open your local db as the input stream
InputStream myInput = context.getAssets().open(DB_NAME);
// Path to the just created empty db
String outFileName = DB_PATH + DB_NAME;
// Open the empty db as the output stream
OutputStream myOutput = new FileOutputStream(outFileName);
// transfer bytes from the inputfile to the outputfile
byte[] buffer = new byte[1024];
int length;
while ((length = myInput.read(buffer)) > 0) {
myOutput.write(buffer, 0, length);
}
// Close the streams
myOutput.flush();
myOutput.close();
myInput.close();
}
} |
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