我正在为验证电子邮件尝试一个else if语句，但是它在else if（password.isempty）上抛出了一个错误，说“else没有if”

Question

@override protected void onCreate（Bundle savedInstanceState）{super.onCreate（savedInstanceState）；getWindow（）.setflags（windowmanager.layoutparams.flag_fullscreen,windowmanager.layoutparams.flag_fullscreen）；setContentView（r.layout.activity_main)；

    Tmail = findViewById(R.id.login_email);
    Tpass = findViewById(R.id.login_password);
    Tconfirmpass = findViewById(R.id.loginRetype_password);
    Bar = findViewById(R.id.bar);
    button = findViewById(R.id.signin);

    mAuth = FirebaseAuth.getInstance();
    button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            String email, password, confirm;

            email = Tmail.getEditText().getText().toString().trim();
            password = Tpass.getEditText().getText().toString().trim();
            confirm = Tconfirmpass.getEditText().getText().toString().trim();

            if (email.isEmpty()){
                Tmail.getEditText().setError("Field should not be empty");
                Tmail.requestFocus();
            }
            else if (!Patterns.EMAIL_ADDRESS.matcher(email).matches());{
                Tmail.setError("Please enter a valid email Id");
                Tmail.requestFocus();
            }
           else if (password.isEmpty()){
                Tpass.setError("Please enter password");
                Tpass.requestFocus();
            } else if (password.length() < 6) {
                Tpass.setError("Password too short");
                Tpass.requestFocus();
            } else if (!confirm.equals(password)) {
                Tconfirmpass.setError("Password mismatch");
                Tconfirmpass.requestFocus();
            } else {mAuth.createUserWithEmailAndPassword(email, password)
    .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
        @Override
        public void onComplete(@NonNull Task<AuthResult> task) {
            if (task.isSuccessful()) {
                // Sign in success, update UI with the signed-in user's information
                Log.d(TAG, "createUserWithEmail:success");
                FirebaseUser user = mAuth.getCurrentUser();
                updateUI(user);
            } else {
                // If sign in fails, display a message to the user.
                Log.w(TAG, "createUserWithEmail:failure", task.getException());
                Toast.makeText(EmailPasswordActivity.this, "Authentication failed.",
                        Toast.LENGTH_SHORT).show();
                updateUI(null);
            }
        }
    });

            }
        }
    });

}

}

Answer 1

请正确格式化您的代码。

删除else if（！patterns.email_address.matcher（email）.matches（））；行中的分号，您就可以开始了。