如何在Android中使用MVVM数据绑定来验证form ViewModel？

public class FormViewModel extends ViewModel {
    private MutableLiveData<String> name = new MutableLiveData<>();
    private MutableLiveData<String> email = new MutableLiveData<>();
    private MutableLiveData<Boolean> isFormValid = new MutableLiveData<>();

    public LiveData<String> getName() {
        return name;
    }

    public void setName(String name) {
        this.name.setValue(name);
    }

    public LiveData<String> getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email.setValue(email);
    }

    public LiveData<Boolean> isFormValid() {
        return isFormValid;
    }

    public void validateForm() {
        String nameValue = name.getValue();
        String emailValue = email.getValue();

        boolean isValid = true;

        // Perform form validation logic here
        if (TextUtils.isEmpty(nameValue)) {
            isValid = false;
        }

        if (TextUtils.isEmpty(emailValue) || !Patterns.EMAIL_ADDRESS.matcher(emailValue).matches()) {
            isValid = false;
        }

        isFormValid.setValue(isValid);
    }
}

<EditText
    android:text="@={viewModel.name}"
    ... />

<EditText
    android:text="@={viewModel.email}"
    ... />

<Button
    android:enabled="@{viewModel.isFormValid}"
    ... />

FormViewModel viewModel = ViewModelProviders.of(this).get(FormViewModel.class);

viewModel.isFormValid().observe(this, new Observer<Boolean>() {
    @Override
    public void onChanged(Boolean isValid) {
        // Update UI based on validation result
        button.setEnabled(isValid);
    }
});