Login (emil and password)

LOGIN (EMAIL AND PASSWORD)

WHEN WE ENTER EMAIL OR PASSWORD 

FOR SHOWING DIALOG FOR EMPTY OR NULL

for email:-

for(email.getText.toString.isEmpty(){

email.getError(Required):  

 return;

}else{

email.getError(null);}

for password:-(same)

for(password.getText.toString.isEmpty(){

password.getError(Required):  

 return;

}else{

password.getError(null);}