android - 外部SDカードからパスを取得しながらopendatabase文字列パラメータを定義する

Question

//this is my handler class


  public class DBHandler extends SQLiteOpenHelper{

  private static final int DATABASE_VERSION = 1;    
  private static final String DATABASE_NAME = "feedbackDB.db"; 
  private static final String TABLE_FEEDBACK = "feedback";

  public DBHandler(Context context) {

       super(context,context.getExternalFilesDir(null).getAbsolutePath()+DATABASE_NAME, null, DATABASE_VERSION);

        }



  public void openDataBase(SQLiteDatabase db) throws SQLException {     

          //Open the database       
          String myPath = context.getExternalFilesDir(null).getAbsolutePath() + DATABASE_NAME;  

          db = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READONLY);     
          }

Answer 1

Declare DB_PATH value in constructor and use it whenever you want so you dont need to assign every time

public DBHandler(Context context)
{

    super(context, DB_NAME, null, 1);
    this.myContext = context;
    DB_PATH = Environment.getExternalStorageDirectory()
            + File.separator + "/.folder name/" + File.separator;

    File f = new File(DB_PATH);
    f.mkdirs();


}

and use it as DB_PATH+DATABASE_NAME to perform database operation