我想使用API中的YouTubePlayerFragment在片段中加载YoutubePlayer
my片段的.xml文件是：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<!-- VIDEO CONTENT -->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:paddingLeft="@dimen/layout_horizontal_margin"
android:paddingRight="@dimen/layout_horizontal_margin"
android:paddingTop="@dimen/layout_vertical_margin"
android:paddingBottom="@dimen/layout_vertical_margin" >
<fragment
android:name="com.google.android.youtube.player.YouTubePlayerFragment"
android:id="@+id/youtubeplayer_fragment"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
<!-- LYRIC CONTENT -->
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="2" >
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:background="@drawable/af_background"
android:layout_centerInParent="true" />
<!-- TEXT STRUCTURE -->
<LinearLayout
android:orientation="vertical"
android:id="@+id/lyric_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerHorizontal="true" >
<LinearLayout
android:id="@+id/start_layout"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_gravity="center_horizontal"
android:layout_centerInParent="true">
<TextView
android:id="@+id/text_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_marginTop="@dimen/lyric_margin_top"
android:gravity="center"
android:text="@string/textTitle2"
android:textSize="@dimen/lyric_size"
android:textIsSelectable="false"/>
</LinearLayout>
</LinearLayout>
<!-- FRONT BACKGROUND -->
<ImageView
android:id="@+id/high_part_image"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:src="@drawable/af_background_up_side"
android:scaleType="fitStart"/>
<ImageView
android:id="@+id/low_part_image"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:src="@drawable/af_background_down_side"
android:scaleType="fitEnd"/>
</RelativeLayout>
</LinearLayout>
正如你所看到的，我添加了一个
现在加载此.xml的片段是：
public class MyFragment extends Fragment{
/**
* The fragment argument representing the item ID that this fragment
* represents.
*/
public static final String ARG_ITEM_ID = "item_id";
/**
* The content this fragment is presenting.
*/
private Items.ItemList mItem;
/**
* Mandatory empty constructor for the fragment manager to instantiate the
* fragment (e.g. upon screen orientation changes).
*/
public MyFragment() {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments().containsKey(ARG_ITEM_ID)) {
// Load the content specified by the fragment
// arguments. In a real-world scenario, use a Loader
// to load content from a content provider.
mItem = Items.ITEM_MAP.get(getArguments().getString(ARG_ITEM_ID));
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(android.R.layout.titles_fragment, container, false);
// Show the content as text in a TextView.
if (mItem != null) {
((TextView) rootView.findViewById(android.R.id.textTitle2)).setMovementMethod(new ScrollingMovementMethod());
}
return rootView;
}
}
最后我有一个实现“YouTubePlayer.OnInitializedListener”的ActivityFragment，我从中获取片段。
public class ItemDetailActivity extends FragmentActivity implements YouTubePlayer.OnInitializedListener{
private TextView mTextView;
private ImageView hImageView;
private ImageView lImageView;
public static final String API_KEY = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
public static final String VIDEO_ID = "BJVlU7d-4x0";
private YouTubePlayer youTubePlayer;
private YouTubePlayerFragment youTubePlayerFragment;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_item_detail);
if (savedInstanceState == null) {
// Create the detail fragment and add it to the activity
// using a fragment transaction.
fragmentTransaction(getIntent().getStringExtra(ItemDetailFragment.ARG_ITEM_ID));
}
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
NavUtils.navigateUpTo(this, new Intent(this, ItemListActivity.class));
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onInitializationFailure(YouTubePlayer.Provider provider,
YouTubeInitializationResult result) {
Toast.makeText(this,
"YouTubePlayer.onInitializationFailure(): " + result.toString(),
Toast.LENGTH_LONG).show();
}
@Override
public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer player,
boolean wasRestored) {
Toast.makeText(getApplicationContext(),
"YouTubePlayer.onInitializationSuccess()",
Toast.LENGTH_LONG).show();
if (!wasRestored) {
player.cueVideo(VIDEO_ID);
}
}
private void fragmentTransaction(String id) {
Bundle arguments = new Bundle();
Fragment fragment;
String content = Items.ITEM_MAP.get(id).content;
if(content.equalsIgnoreCase("Title 1")) {
// Fragment transaction
arguments.putString(ItemDetailFragment.ARG_ITEM_ID, id);
fragment = new ItemDetailFragment();
fragment.setArguments(arguments);
getSupportFragmentManager().beginTransaction()
.replace(R.id.item_detail_container, fragment)
.commit();
}
if(content.equalsIgnoreCase("Title 2")) {
// Fragment transaction
arguments.putString(ItemDetailFragment.ARG_ITEM_ID, id);
fragment = new MyFragment);
fragment.setArguments(arguments);
FragmentManager fm = getSupportFragmentManager();
//youTubePlayerFragment = fragment.getChildFragmentManager().findFragmentById(R.id.youtubeplayer_fragment);
//youTubePlayerFragment = (YouTubePlayerFragment)getFragmentManager().findFragmentById(R.id.youtubeplayer_fragment);
//Fragment ytbfragment = fragment.getChildFragmentManager().findFragmentById(R.id.youtubeplayer_fragment);
FragmentTransaction ft = fm.beginTransaction();
ft.replace(R.id.item_detail_container, fragment);
//ft.add(R.id.youtubeplayer_fragment, youTubePlayerFragment);
ft.commit();
//youTubePlayerFragment.initialize(API_KEY, this);
}
if(content.equalsIgnoreCase("Title 3")) {
// Fragment transaction
arguments.putString(ItemDetailFragment.ARG_ITEM_ID, id);
fragment = new ItemDetailFragment();
fragment.setArguments(arguments);
getSupportFragmentManager().beginTransaction()
.replace(R.id.item_detail_container, fragment)
.commit();
}
}
}
在标题2中我得到了片段，我试图用不同的方法获取youtube播放器的内部片段，但它不起作用。 当我试图获得de YoutubeFragment时，总是崩溃加载.xml试图让玩家形成。
如果我只加载原始片段，那么app会很好地获取xml文件。
问题是什么？
答案 0 :(得分：22)
我几天来一直在研究这个问题，我终于找到了解决方案。我会在这里发布代码好吗？
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View fragmentYoutubeView = inflater.inflate(R.layout.fragment_youtube, container, false);
mYoutubePlayerFragment = new YouTubePlayerSupportFragment();
mYoutubePlayerFragment.initialize(youtubeKey, this);
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.fragment_youtube_player, mYoutubePlayerFragment);
fragmentTransaction.commit();
mYoutubeVideoTitle = (TextView)fragmentYoutubeView.findViewById(R.id.fragment_youtube_title);
mYoutubeVideoDescription = (TextView)fragmentYoutubeView.findViewById(R.id.fragment_youtube_description);
mYoutubeVideoTitle.setText(getArguments().getString(Resources.KEY_VIDEO_TITLE));
mYoutubeVideoDescription.setText(getArguments().getString(Resources.KEY_VIDEO_DESC));
VideoFragment.setTextToShare(getArguments().getString(Resources.KEY_VIDEO_URL));
return fragmentYoutubeView;
}
在这段代码中，我通过Intent传递youtube视频ID（url），标题和描述，并将它们放在textViews中。要播放youtubePlayerFragment，我使用frameLayout（fragment_youtube_player），就像这样：
<FrameLayout
android:id="@+id/fragment_youtube_player"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"/>
我把重量放1，因为包含Frame和textViews的LinearLayout的权重为3，强制视图占据我告诉他们的空间。
问题的工具包在这里：
mYoutubePlayerFragment = new YouTubePlayerSupportFragment();
mYoutubePlayerFragment.initialize(youtubeKey, this);
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.fragment_youtube_player, mYoutubePlayerFragment);
fragmentTransaction.commit();
此代码以编程方式用youtubePlayerSupportFragment替换FrameLayout。所有这些都在Android片段中，并且有效。
编辑1：
我看到片段如何管理Youtube API的初始化成功和失败的一些困惑。澄清我的Fragment标题如下：
public class FragmentYoutubePlayerGenerator extends Fragment
implements YouTubePlayer.OnInitializedListener{
实施的两种方法非常简单：
@Override
public void onInitializationSuccess(Provider provider,
YouTubePlayer player,
boolean wasRestored) {
if(!wasRestored){
player.cueVideo(mVideoInfo.getId());
}
}
@Override
public void onInitializationFailure(Provider provider,
YouTubeInitializationResult result) {
if (result.isUserRecoverableError()) {
result.getErrorDialog(this.getActivity(),1).show();
} else {
Toast.makeText(this.getActivity(),
"YouTubePlayer.onInitializationFailure(): " + result.toString(),
Toast.LENGTH_LONG).show();
}
}
我留给开发人员选择在错误处理中离开或不离开result.toString（），有些用户不喜欢看到他们在屏幕上看不到的很多数字，但是放置也很好它们是因为它们可以快照它并将它们发送给您来调试错误。