Android Form Validation:

Android Form Validation:

private void registerUser() {
    String email = ET_SignupEmail.getText().toString().trim();
    String password = ET_SignupPassword.getText().toString().trim();
    if (email.isEmpty())
    {
        ET_SignupEmail.setError("Email is required");
        ET_SignupEmail.requestFocus();
        return; //prevent code to go below. stop here.    }

    if(!Patterns.EMAIL_ADDRESS.matcher(email).matches()) //import android.util.Patterns;    {
        ET_SignupEmail.setError("Please enter a Valid Email !");
        ET_SignupEmail.requestFocus();
        return;
    }

    if (email.isEmpty())
    {
        ET_SignupPassword.setError("Password is required");
        ET_SignupPassword.requestFocus();
        return;
    }
    if (password.length() < 6)
    {
        ET_SignupPassword.setError("Minimum length of password should be 6 .");
        ET_SignupPassword.requestFocus();
        return;
    }
    
    //if code run and come here it means all the above condition is false means everything ok ;)
    //TODO: So here we can write code for registration}