Clickable compound drawable in EditText that pops a view on click

I am using TextWatcher to validate my input and I want my red hint image to be clickable so I can give the user visual feedback as shown in the image below. What I have until now is the edit text with the red hint image appearing when I enter invalid data. I now want to know how to make this red hint clickable and make pop-up hint appear as shown. This is the code I have so far, ``` public class MainActivity extends Activity implements TextWatcher{ EditText username,email = null; boolean flag=false; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); username=(EditText) findViewById(R.id.usernametxt); email=(EditText) findViewById(R.id.emailtxt); username.addTextChangedListener(this); username.setOnTouchListener(new View.OnTouchListener(){ public boolean onTouch(View view, MotionEvent motionEvent) { // your code here... if(flag) { email.setText("Error. . ."); } getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE); return false; } }); Button loginbtn = (Button) findViewById(R.id.login); loginbtn.setOnClickListener(new Button.OnClickListener() { public void onClick(View v) { // TODO Auto-generated method stub //Check Validations if(username.getText().toString().equalsIgnoreCase("")) { username.setCompoundDrawablesWithIntrinsicBounds(0, 0, R.drawable.alert, 0); flag=true; } } }); Button clearbtn = (Button) findViewById(R.id.clear); clearbtn.setOnClickListener(new Button.OnClickListener() { public void onClick(View v) { // TODO Auto-generated method stub username.setText(""); email.setText(""); } }); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.activity_main, menu); return true; } public void afterTextChanged(Editable arg0) { // TODO Auto-generated method stub } public void beforeTextChanged(CharSequence s, int start, int count, int after) { // TODO Auto-generated method stub } public void onTextChanged(CharSequence s, int start, int before, int count) { // TODO Auto-generated method stub username.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0); flag=false; email.setText(""); } } ```