안드로이드 : CardsActivity.CardPagerAdapter 클래스의 오류 생성자 CardPagerAdapter를 수정하는 방법 주어진 유형에 적용 할 수 없습니다.

소스 코드 : https://github.com/jamesmccann/android-view-pager-cards/blob/master/app/src/main/java/nz/jamesmccann/cardviewpager/CardActivity.java 나는 그것을 다운로드했지만 그렇지 않습니다 일했기 때문에 내 프로젝트에서 복사했습니다. 그러나 몇 가지 오류가 발생하여 여러 번 검색해도 해결 방법을 모르겠습니다. 이것은 CarContainerFragment입니다.

 import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class CardContainerFragment extends Fragment {

    private boolean cardFlipped = false;

    public CardContainerFragment() {
        setHasOptionsMenu(true);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fragmentcardcontainer, container, false);

        getChildFragmentManager()
                .beginTransaction()
                .add(R.id.container, new CardFrontFragment())
                .commit();

        return rootView;
    }

    public void flipCard() {
        Fragment newFragment;
        if (cardFlipped) {
            newFragment = new CardFrontFragment();
        } else {
            newFragment = new CardBackFragment();
        }

        getChildFragmentManager()
                .beginTransaction()
                .setCustomAnimations(
                        R.anim.card_flip_right_in, R.anim.card_flip_right_out,
                        R.anim.card_flip_left_in, R.anim.card_flip_left_out)
                .replace(R.id.container, newFragment)
                .commit();

        cardFlipped = !cardFlipped;
    }

    public static class CardFrontFragment extends Fragment {

        public CardFrontFragment() {
        }

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                 Bundle savedInstanceState) {
            View rootView = inflater.inflate(R.layout.fragmentcard, container, false);
            return rootView;
        }
    }

    public static class CardBackFragment extends Fragment {

        public CardBackFragment() {
        }

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                 Bundle savedInstanceState) {
            View rootView = inflater.inflate(R.layout.fragment_card_back, container, false);
            return rootView;
        }
    }
}

이것은 CardsActivity입니다.

    import android.app.Activity;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.os.Bundle;
import android.support.v4.view.ViewPager;
import android.support.v4.app.FragmentPagerAdapter;


public class CardsActivity extends Activity {


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activitycard);

        CardPagerAdapter adapter = new CardPagerAdapter(getFragmentManager());
        ViewPager viewPager = (ViewPager) findViewById(R.id.view_pager);
        viewPager.setAdapter(adapter);
    }

    public class CardPagerAdapter extends FragmentPagerAdapter {

        public CardPagerAdapter(FragmentManager fragmentManager) {
            super(fragmentManager);
        }

        @Override
        public Fragment getItem(int position) {
            return new Fragment();
        }

        @Override
        public int getCount() {
            return 5;
        }
    }
}

이것은 내가 얻은 오류입니다.

  Error:(24, 36) error: constructor CardPagerAdapter in class CardsActivity.CardPagerAdapter cannot be applied to given types;
required: android.support.v4.app.FragmentManager
found: android.app.FragmentManager
reason: actual argument android.app.FragmentManager cannot be converted to android.support.v4.app.FragmentManager by method invocation conversion