相关疑难解决方法(0)

我正在制作一个简单的登录表单(电子邮件和密码)来尝试加强我的反应式编程技能组合.我在使电子邮件字段验证按照我想要的方式工作时遇到了一些麻烦.

这是我的代码:

    final Observable<CharSequence> email = RxTextView.textChanges(emailView);

    Observable<Boolean> emailIsValid = email.map(new Func1<CharSequence, Boolean>() {
        @Override
        public Boolean call(CharSequence charSequence) {
            Log.d("asdf", "emailIsValid call: " + charSequence);
            return Pattern.matches(Patterns.EMAIL_ADDRESS.pattern(), charSequence);
        }
    });
    RxView.focusChanges(emailView)
            .withLatestFrom(emailIsValid, new Func2<Boolean, Boolean, Boolean>() {
                @Override
                public Boolean call(Boolean hasFocus, Boolean emailIsValid) {
                    return (!hasFocus && !emailIsValid);
                }
            })
            .subscribe(new Action1<Boolean>() {
                @Override
                public void call(Boolean showError) {
                    if (showError) {
                        emailInputLayout.setError("Enter a valid email");
                    } else {
                        emailInputLayout.setError(null);
                    }
                }
            });
    Observable<CharSequence> password = RxTextView.textChanges(passwordView);

    Observable.combineLatest(emailIsValid, …