btnClick = (Button) findViewById(R.id.btnClick);
        editUserName = (EditText) findViewById(R.id.editUserName);
        editPassword = (EditText) findViewById(R.id.editPassWord);
        canvas = findViewById(R.id.canvas);

        btnClick.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String username = "null", password="null";
                username = editUserName.getText().toString();
                password = editPassword.getText().toString();
                if(username.equals("itwspec3") && password.equals("android")){
                    Toast.makeText(getApplicationContext(),"User Authencated",Toast.LENGTH_SHORT).show();

                } else {
                    Toast.makeText(getApplicationContext(),"Incorrect Credentials",Toast.LENGTH_SHORT).show();
                }
            }
        });