Feild Validation in Android

public static boolean isNotNull(String txt){
    return txt!=null && txt.trim().length()>0 ? true: false;
}


public boolean isEmailEmpty(String lusername) {
    boolean status;

    if (Utility.isNotNull(lusername)) {
        status = true;
    } else {
        status = false;

        textt.setText("Email cannot be empty");
        toastt.setView(layoutt);
        toastt.show();


    }
    return status;
}
public boolean isEmailValid(String lusername) {
    boolean status;
    if (Utility.validateEmail(lusername)){
        status = true;
    } else {
        status = false;

        textt.setText("Invalid email address");
        toastt.setView(layoutt);
        toastt.show();


    }
    return status;
}

public boolean isPasswordhaveSixDigits(String pass) {
    boolean status;

    if (pass.length() > 7) {
        status = true;
    } else {
        status = false;

        textt.setText("Invalid Password");
        toastt.setView(layoutt);
        toastt.show();
    }
    return status;
}
public boolean isPasswordEmpty(String pass) {
    boolean status;

    if (Utility.isNotNull(pass)) {
        status = true;
    } else {
        status = false;

        textt.setText("Password cannot be empty");
        toastt.setView(layoutt);
        toastt.show();


    }
    return status;
}

===============================

Call the Service Method...


lusername = txtEmail.getText().toString();
lpassword = txtPassword.getText().toString();

if (isEmailEmpty(lusername) && isEmailValid(lusername) && isPasswordEmpty(lpassword) && isPasswordhaveSixDigits(lpassword)){
                loginUserOnline(lusername, lpassword);
}
else {
    System.out.println("4");
}