How to check username from editeText value to sqlite

How to check username from editeText value to sqlite. i want to make login system by check name at database. Please guideline or show example to me. Sorry for bad English.

Database name "mydatabase" Table name "members"

public void onCreate(SQLiteDatabase db) {
        // TODO Auto-generated method stub
        // Create Table Name
        db.execSQL("CREATE TABLE " + TABLE_MEMBER +
                "(MemberID INTEGER PRIMARY KEY AUTOINCREMENT," +
                " Name TEXT(100)," +
                " Tel TEXT(100));");

        Log.d("CREATE TABLE", "Create Table Successfully.");
    }


    // Insert Data
    public long InsertData(String strMemberID, String strName, String strTel) {
        // TODO Auto-generated method stub

        try {
            SQLiteDatabase db;
            db = this.getWritableDatabase(); // Write Data

            /**
             *  for API 11 and above
             SQLiteStatement insertCmd;
             String strSQL = "INSERT INTO " + TABLE_MEMBER
             + "(MemberID,Name,Tel) VALUES (?,?,?)";

             insertCmd = db.compileStatement(strSQL);
             insertCmd.bindString(1, strMemberID);
             insertCmd.bindString(2, strName);
             insertCmd.bindString(3, strTel);
             return insertCmd.executeInsert();
             */

            ContentValues Val = new ContentValues();
            Val.put("MemberID", strMemberID);
            Val.put("Name", strName);
            Val.put("Tel", strTel);

            long rows = db.insert(TABLE_MEMBER, null, Val);

            db.close();
            return rows; // return rows inserted.

        } catch (Exception e) {
            return -1;
        }

    }

    // Select Data
    public String[] SelectData(String strMemberID) {
        // TODO Auto-generated method stub

        try {
            String arrData[] = null;

            SQLiteDatabase db;
            db = this.getReadableDatabase(); // Read Data

            Cursor cursor = db.query(TABLE_MEMBER, new String[] { "*" },
                    "MemberID=?",
                    new String[] { String.valueOf(strMemberID) }, null, null, null, null);

            if(cursor != null)
            {
                if (cursor.moveToFirst()) {
                    arrData = new String[cursor.getColumnCount()];
                    /***
                     *  0 = MemberID
                     *  1 = Name
                     *  2 = Tel
                     */
                    arrData[0] = cursor.getString(0);
                    arrData[1] = cursor.getString(1);
                    arrData[2] = cursor.getString(2);
                }
            }
            cursor.close();
            db.close();
            return arrData;

        } catch (Exception e) {
            return null;
        }

    }

    // Show All Data
    public ArrayList<HashMap<String, String>> SelectAllData() {
        // TODO Auto-generated method stub

        try {

            ArrayList<HashMap<String, String>> MyArrList = new ArrayList<HashMap<String, String>>();
            HashMap<String, String> map;

            SQLiteDatabase db;
            db = this.getReadableDatabase(); // Read Data

            String strSQL = "SELECT  * FROM " + TABLE_MEMBER;
            Cursor cursor = db.rawQuery(strSQL, null);

            if (cursor != null) {
                if (cursor.moveToFirst()) {
                    do {
                        map = new HashMap<String, String>();
                        map.put("MemberID", cursor.getString(0));
                        map.put("Name", cursor.getString(1));
                        map.put("Tel", cursor.getString(2));
                        MyArrList.add(map);
                    } while (cursor.moveToNext());
                }
            }
            cursor.close();
            db.close();
            return MyArrList;

        } catch (Exception e) {
            return null;
        }

    }


    // Update Data
    public long UpdateData(String strMemberID,String strName,String strTel) {
        // TODO Auto-generated method stub

        try {

            SQLiteDatabase db;
            db = this.getWritableDatabase(); // Write Data

            /**
             *  for API 11 and above
             SQLiteStatement insertCmd;
             String strSQL = "UPDATE " + TABLE_MEMBER
             + " SET Name = ? "
             + " , Tel = ? "
             + " WHERE MemberID = ? ";

             insertCmd = db.compileStatement(strSQL);
             insertCmd.bindString(1, strName);
             insertCmd.bindString(2, strTel);
             insertCmd.bindString(3, strMemberID);

             return insertCmd.executeUpdateDelete();
             *
             */
            ContentValues Val = new ContentValues();
            Val.put("Name", strName);
            Val.put("Tel", strTel);

            long rows = db.update(TABLE_MEMBER, Val, " MemberID = ?",
                    new String[] { String.valueOf(strMemberID) });

            db.close();
            return rows; // return rows updated.

        } catch (Exception e) {
            return -1;
        }

    }



    // Delete Data
    public long DeleteData(String strMemberID) {
        // TODO Auto-generated method stub

        try {

            SQLiteDatabase db;
            db = this.getWritableDatabase(); // Write Data

            /**
             * for API 11 and above
             SQLiteStatement insertCmd;
             String strSQL = "DELETE FROM " + TABLE_MEMBER
             + " WHERE MemberID = ? ";

             insertCmd = db.compileStatement(strSQL);
             insertCmd.bindString(1, strMemberID);

             return insertCmd.executeUpdateDelete();
             *
             */

            long rows = db.delete(TABLE_MEMBER, "MemberID = ?",
                    new String[] { String.valueOf(strMemberID) });

            db.close();
            return rows; // return rows deleted.

        } catch (Exception e) {
            return -1;
        }

    }



    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        // TODO Auto-generated method stub
        db.execSQL("DROP TABLE IF EXISTS " + TABLE_MEMBER);

        // Re Create on method  onCreate
        onCreate(db);
    }

}