EditText korisnicko = (EditText)findViewById(R.id.editText1);
        EditText password = (EditText)findViewById(R.id.editText3);


        String username = ""+korisnicko.getText().toString();
        String passw = ""+password.getText().toString();


        boolean logInSuc=false;
        int id= 0;
        try {
            myDB = this.openOrCreateDatabase("korisnici", MODE_PRIVATE, null);
            Cursor c = myDB.rawQuery("SELECT * FROM kor WHERE username ='"+username+"' AND pass='"+passw+"'", null);
            c.moveToFirst();
            if (c.getCount()>0) {
                logInSuc=true;
                id = c.getInt(c.getColumnIndex("id"));
            }
        }
        catch(Exception e) {
            Log.e("Error", "Error", e);
        } finally {
            if (myDB != null) myDB.close();
        }
        if(logInSuc)
        {
            Intent i = new Intent(MainActivity.this, Activity1.class);
            i.putExtra("id", id);
            startActivity(i);
        }
        else
            Toast.makeText(view.getContext(), "Krivo korisničko ime ili lozinka", Toast.LENGTH_SHORT).show();
        logInSuc = false;