String sqlcar = "create table if not exists cardinformation(id integer primary key autoincrement not null, name varchar, sno varchar," +
"gender varchar, department varchar, cardCode varchar, state varchar, imgUrl varchar,img BLOB)";
db.execSQL(sqlcar);
ContentValues values = new ContentValues();
ByteArrayOutputStream os = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 100, os);
values.put("img", os.toByteArray());
String[] arr= new String[1];
arr[0] = strings[1];
long i = WelcomeActivity.db.update("cardinformation",values,"cardCode = ?",arr);
Caused by: android.database.sqlite.SQLiteException: no such column: img (code 1): , while compiling: UPDATE cardinformation SET img=? WHERE cardCode = ?