在viewpager中显示Youtube视频

我想在ViewPager中设置 YouTube 个视频.为此，我在适配器中设置了FrameLayout，并在其中设置了YoutubeVideoFragment，如下所示:

I want to set YouTube videos within ViewPager. For this I have set FrameLayout in adapter and I have set YoutubeVideoFragment in it like below:

我的ViewPager适配器:

import android.app.Activity;
import android.app.FragmentTransaction;
import android.content.Context;
import android.os.Bundle;
import android.support.v4.view.PagerAdapter;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import java.util.List;

import np.com.test.R;
import np.com.test.fragment.YoutubeVideoFragment;

/**
 * Created by Vikash on 8/18/2015.
 */
public class TutorialVideoAdapter extends PagerAdapter {
private List<String> mList;
private Activity mActivity;

public TutorialVideoAdapter(Activity activity, List<String> list) {
    mActivity = activity;
    mList = list;
}

@Override
public int getCount() {
    return mList.size();
}

@Override
public boolean isViewFromObject(View view, Object object) {
    return view == object;
}

@Override
public Object instantiateItem(ViewGroup container, int position) {

    LayoutInflater inflater = (LayoutInflater) mActivity
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View view = inflater.inflate(R.layout.pager_video_tutorial, container, false);

    YoutubeVideoFragment fragment = new YoutubeVideoFragment();
    Bundle bundle = new Bundle();
    bundle.putString("video_key", mList.get(position));
    fragment.setArguments(bundle);

    FragmentTransaction transaction = mActivity.getFragmentManager().beginTransaction();
    transaction.add(R.id.fragment_container, fragment);
    transaction.commit();

    container.addView(view);
    return view;
}

@Override
public void destroyItem(ViewGroup container, int position, Object object) {
    container.removeView((View) object);
}
}

在上面的适配器中，其中YoutubeVideoFragment用于加载Youtube视频.

In above adapter in which YoutubeVideoFragment is use to load Youtube video.

YoutubeVideoFragment:

import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;

import com.google.android.youtube.player.YouTubeInitializationResult;
import com.google.android.youtube.player.YouTubePlayer;
import com.google.android.youtube.player.YouTubePlayerFragment;

import np.com.test.R;
import np.com.test.utils.Config;

/**
 * Created by Vikash on 8/18/2015.
 */
public class YoutubeVideoFragment extends Fragment implements YouTubePlayer.OnInitializedListener {

    private String YOUTUBE_VIDEO_CODE;
    private static final int RECOVERY_DIALOG_REQUEST = 1;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        YOUTUBE_VIDEO_CODE = getArguments().getString("video_key");
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View fragmentYoutubeView = inflater.inflate(R.layout.fragment_youtube_video, container, false);
        YouTubePlayerFragment mYoutubePlayerFragment = new YouTubePlayerFragment();
        mYoutubePlayerFragment.initialize(Config.GOOGLE_API_KEY, this);

        FragmentManager fragmentManager = getFragmentManager();
        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
        fragmentTransaction.replace(R.id.fragment_youtube_player, mYoutubePlayerFragment);
        fragmentTransaction.commit();

        return fragmentYoutubeView;
    }

    @Override
    public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer player, boolean wasRestored) {
        if (!wasRestored) {
            player.cueVideo(YOUTUBE_VIDEO_CODE);
        }
    }

    @Override
    public void onInitializationFailure(YouTubePlayer.Provider provider, YouTubeInitializationResult errorReason) {
        if (errorReason.isUserRecoverableError()) {
            errorReason.getErrorDialog(getActivity(), RECOVERY_DIALOG_REQUEST).show();
        } else {
            String errorMessage = String.format(
                    getString(R.string.error_player), errorReason.toString());
            Toast.makeText(getActivity(), errorMessage, Toast.LENGTH_LONG).show();
        }
    }
}

fragmenet_youtube_video 和 pager_video_tutorial 的XML布局代码:

XML layout code for both fragmenet_youtube_videoandpager_video_tutorial:

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/fragment_youtube_player"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

我得到了什么?仅显示第一个位置片段.我只能在viewpager中看到一个视频，其余页面为空白.

What i got? Only showing first position fragment. I can see only one video in viewpager remaining page are are blank.

我尝试过什么?我昨天尝试在Google中搜索解决方案，但没有成功.

What i tried? I tried to search for the solution from yesterday in Google but couldn't get success.

我的问题:如何加载剩余的YoutubeVideoFragment?

谢谢.