小编San*_*ndy的帖子

我正在尝试将包含YouTube播放器的视图添加到我在旋转设备时继续播放的活动.由于UI包含的不仅仅是视频,我使用的是YouTubePlayerFragment.

当方向从纵向更改为横向时,系统应使用不同的布局文件.此布局还包括YouTube播放器作为不占用整个屏幕的视图.您将在下面找到重现问题的最低限度代码(对于全新的Android应用,最低API级别为19).

package com.example.youtubefragmenttest;

import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;

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

public class MainActivity extends AppCompatActivity implements YouTubePlayer.OnInitializedListener {

    private static final String YOUTUBE_DEV_KEY = "[your youtube dev key here]";

    private static final String TAG_YOUTUBE_FRAGMENT = "YoutubePlayerFragment";

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

        FragmentManager fm = getFragmentManager();
        YouTubePlayerFragment retainedYoutubeFragment = (YouTubePlayerFragment) fm.findFragmentByTag(TAG_YOUTUBE_FRAGMENT);
        if (retainedYoutubeFragment == null) {
            retainedYoutubeFragment = YouTubePlayerFragment.newInstance();
            retainedYoutubeFragment.setRetainInstance(true);
            FragmentTransaction fragmentTransaction = fm.beginTransaction();
            fragmentTransaction.add(R.id.youtube_fragment, retainedYoutubeFragment, TAG_YOUTUBE_FRAGMENT);
            fragmentTransaction.commit(); …