Develop Reference

YouTubePlayerSupportFragment inside fragment

I have a fragment and I want to play YouTube video inside fragment. For this I have follow the following steps:
Created project on Google console
Generate Key
Download and install YouTubeAndroidPlayerApi.
Create a simple fragment
Add YouTubePlayerSupportFragment
Write the code in java file
When I run App, got an error message:
Caused by: android.view.InflateException: Binary XML file line #10: Error inflating class com.google.android.youtube.player.YouTubePlayerView
Caused by: java.lang.IllegalStateException: A YouTubePlayerView can only be created with an Activity which extends YouTubeBaseActivity as its context.
Code of XML file
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<com.google.android.youtube.player.YouTubePlayerView
android:name="com.google.android.youtube.player.
YouTubePlayerSupportFragment"
android:id="#+id/YoutubePlayer"
android:layout_width="match_parent"
android:layout_height="240dp"
android:layout_marginTop="20dp"/>
</LinearLayout>
Code of Java File
public class TopicYoutubeFragment extends Fragment implements YouTubePlayer.OnInitializedListener {
private YouTubePlayer youtubeplayer;
private static final String YoutubeDeveloperKey = "AIzaSyAp8uMTh0VnYI";
private String YoutubeURL, youtubeID;
private String TopicName;
private static final int RECOVERY_REQUEST = 1;
private YouTubePlayerView ypv;
public TopicYoutubeFragment() {
}
public static TopicYoutubeFragment newInstance(String YoutubeURL, String TopicName) {
TopicYoutubeFragment fragment = new TopicYoutubeFragment();
Bundle args = new Bundle();
args.putString("YoutubeURL", YoutubeURL);
args.putString("TopicName", TopicName);
fragment.setArguments(args);
return fragment;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
YoutubeURL = getArguments().getString(YoutubeURL);
TopicName = getArguments().getString(TopicName);
}
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.topicyoutubefragment, container, false);
ypv = view.findViewById(R.id.YoutubePlayer);
ypv.initialize(YoutubeDeveloperKey, this);
youtubeID = "F7xdbsjFGtU";
return view;
}
#Override
public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer youTubePlayer, boolean b) {
if (!b) {
if (youtubeID != null)
youTubePlayer.cueVideo(youtubeID); // Plays https://www.youtube.com/watch?v=F7xdbsjFGtU
else
Toast.makeText(getActivity(), "No Video is available for this Topic", Toast.LENGTH_LONG).show();
}
}
#Override
public void onInitializationFailure(YouTubePlayer.Provider provider, YouTubeInitializationResult errorReason) {
if (errorReason.isUserRecoverableError()) {
errorReason.getErrorDialog(getActivity(), RECOVERY_REQUEST).show();
} else {
String error = String.format(getString(R.string.player_error), errorReason.toString());
Toast.makeText(getActivity(), error, Toast.LENGTH_LONG).show();
}
}
}

"Already executed" error (Retrofit2 and Android)

First of all, I have 2 fragments and they show different json values(2 links). If I change fragment(.replace()), that fragment get values with retrofit and show it. It works well but other fragment is deleted with values. After change fragment, it downloads again so I change structure. I want to take 2 json objects once so I get json objects in mainactivity and fragments get these with methods. They work well in first opening but if i open a fragment second time, it gives this error. How can I solve it?
java.lang.IllegalStateException: Already executed.
at retrofit2.OkHttpCall.enqueue(OkHttpCall.java:84)
Code is very long, i will show main structure.
MainActivity.java
public class MainActivity extends AppCompatActivity
{
private Call<Restaurant[]> restaurantCall;
private Call<Dining[]> diningCall;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//Restaurant Json value
RestaurantInterface restaurantInterface = RetroClient.getClient().create(RestaurantInterface.class);
restaurantCall = restaurantInterface.getJsonValues();
//Dininghall Json value
DiningInterface diningInterface = RetroClient.getClient().create(DiningInterface.class);
diningCall = diningInterface.getJsonValues();
}
public Call<Restaurant[]> RestaurantJson()
{
return this.restaurantCall;
}
public Call<Dining[]> DiningJson()
{
return this.diningCall;
}
}
RestaurantFragment.java (Other fragment has same structure)
public class RestFragment extends Fragment
{
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
View view = inflater.inflate(R.layout.fragment_rest, container, false);
Call<Restaurant[]> call = ((MainActivity) getActivity()).RestaurantJson();
call.enqueue(new Callback<Restaurant[]>()
{
.
.

Summing up, in order to avoid the "Already executed" exception, clone the call:
public Call<Restaurant[]> RestaurantJson()
{
return this.restaurantCall.clone();
}
public Call<Dining[]> DiningJson()
{
return this.diningCall.clone();
}
If you want to execute the call in the activity and not in the fragment as you are actually doing, then you need to call enqueue(new Callbak(... in your activity.
So you need something like this:
public class RestFragment extends Fragment {
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_rest, container, false);
((MainActivity) getActivity()).RestaurantJson(this);
}
public void onResponse(Response<T> response) {
//your fragment code on response
}
...
}
public class MainActivity extends AppCompatActivity {
public void RestaurantJson(final RestFragment fragment)
{
RestaurantInterface restaurantInterface = RetroClient.getClient().create(RestaurantInterface.class);
restaurantCall = restaurantInterface.getJsonValues();
restaurantCall.enqueue(new Callback<Restaurant[]>() {
#Override
public void onResponse(Call<T> call, Response<T> response) {
...
fragment.onResponse(response);
}
}
...
}
The same for your DiningFragment and your dining call...

YoutubePlayerSupportFragment inside Viewpager

I have about 5 different videos from youtube and I want to put them into viewpager to slide them. Is there any solution for this with explanation, because I searched here and at different sites, but can't find something useful. Thank you for attention

You have to call YouTubePlayerSupportFragment.reset() on the old YouTubePlayer when the ViewPager is switched and then YouTubePlayerSupportFragment.initialize(). This requires responding to the TabLayout's onTabSelected events which cant use .setupWithViewPager (which swallows both the ViewPager and TabLayouts view change events). This is roughly what's needed in the adapter (initialisePlayer and shutDownPlayer are called in response to tab changes, in the fragment that sets up the adapter, ViewPager and TabLayout):
private SparseArray<YouTubePlayerSupportFragment> fragments = new SparseArray<>(3);
private SparseArray<YouTubePlayer> players = new SparseArray<>(3);
#Override
public android.support.v4.app.Fragment getItem(final int position) {
YouTubePlayerSupportFragment fragment = new YouTubePlayerSupportFragment();
fragments.put(position, fragment);
return fragment;
}
public void initialisePlayer(final int position) {
YouTubePlayerSupportFragment fragment = fragments.get(position);
fragment.initialize(API_KEY, new YouTubePlayer.OnInitializedListener() {
#Override
public void onInitializationSuccess(final YouTubePlayer.Provider provider, final YouTubePlayer youTubePlayer, final boolean b) {
players.put(position, youTubePlayer);
youTubePlayer.cueVideo(getVids()[position]);
}
#Override
public void onInitializationFailure(final YouTubePlayer.Provider provider, final YouTubeInitializationResult youTubeInitializationResult) {
}
});
}
public void shutDownPlayer(int position) {
YouTubePlayer player = players.get(position);
if (player == null) {
return;
}

java.lang.IllegalStateException: YouTubeServiceEntity not initialized error when using YouTubePlayerApi

I'm using YouTubePlayerAPI and YouTubePlayerSupportFragment in my app and I'm getting the following error, but I couldn't find out what is causing it. I've been looking for information but I haven't found anything useful.
java.lang.IllegalStateException: YouTubeServiceEntity not initialized
at android.os.Parcel.readException(Parcel.java:1433)
at android.os.Parcel.readException(Parcel.java:1379)
at com.google.android.youtube.player.internal.l$a$a.a(Unknown Source)
at com.google.android.youtube.player.internal.o.a(Unknown Source)
at com.google.android.youtube.player.internal.ad.a(Unknown Source)
at com.google.android.youtube.player.YouTubePlayerView.a(Unknown Source)
at com.google.android.youtube.player.YouTubePlayerView$1.a(Unknown Source)
at com.google.android.youtube.player.internal.r.g(Unknown Source)
at com.google.android.youtube.player.internal.r$c.a(Unknown Source)
at com.google.android.youtube.player.internal.r$b.a(Unknown Source)
at com.google.android.youtube.player.internal.r$a.handleMessage(Unknown Source)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5041)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
at dalvik.system.NativeStart.main(Native Method)
In the stackstrace there isn't any line number pointing to any of my classes or activities.
Any idea of it?
Thanks!
EDIT
My custom YoutubePlayerFragment Class: YouTubeVideoPlayerFragment.java
public class YouTubeVideoPlayerFragment extends YouTubePlayerSupportFragment {
private static final String ARG_URL = "url";
// ===========================================================
// Constructors
// ===========================================================
/**
* Mandatory empty constructor for the fragment manager to instantiate the
* fragment (e.g. upon screen orientation changes).
*/
public YouTubeVideoPlayerFragment() {
}
/**
* Factory method to generate a new instance of the fragment given a video URL.
*
* #param url The video url this fragment represents
* #return A new instance of this fragment with itemId extras
*/
public static YouTubeVideoPlayerFragment newInstance(String url) {
final YouTubeVideoPlayerFragment mFragment = new YouTubeVideoPlayerFragment();
// Set up extras
final Bundle args = new Bundle();
args.putString(ARG_URL, url);
mFragment.setArguments(args);
// Initialize YouTubePlayer
mFragment.init();
return mFragment;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
private void init(){
initialize(Constants.API_KEY, new YouTubePlayer.OnInitializedListener() {
#Override
public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer youTubePlayer, boolean wasRestored) {
if (!wasRestored) {
youTubePlayer.cueVideo(getArguments().getString(ARG_URL));
youTubePlayer.setShowFullscreenButton(false);
}
}
}
fragment.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
android:layout_height="match_parent"
android:layout_width="match_parent"
android:background="#color/black" >
<!-- For YoutubeFragment -->
<FrameLayout
android:id="#+id/youtube_fragment"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
calling method:
// Create a new instance of YouTubeVideoPlayerFragment providing video id
// and place it in the corresponding FrameLayout
final YouTubeVideoPlayerFragment youTubeVideoPlayerFragment = YouTubeVideoPlayerFragment.newInstance(VIDEO_ID);
final FragmentTransaction ft = getChildFragmentManager().beginTransaction();
ft.replace(R.id.youtube_fragment, youTubeVideoPlayerFragment);
ft.commit();
EDIT
I've found out the origin of that error. This is the scenario:
The activity starts. In onCreate() it instantiates a new YouTubeVideoPlayerFragment and initializes YouTube object (which starts the YouTubeServiceEntity internally) in its newInstance() method. Then the YouTube fragment that was instantiated before, is attached with FragmentManager to the corresponding FrameLayout while video is loading.
Here is the issue: If user exits the activity before video had been loaded, the exception is thrown.
So if user want to exit from the activity in that case, what should I do and how? I don't really know what to do!

Once again, do NOT use fragment constructors or factory methods to work with lifecycle or context bound entities. Simply put, such entities can only be used after super.onCreate(...) has been called.
The question now is, when to call the init method?
Here's what YouTubePlayerFragment documentation says:
The YouTubePlayer associated with this fragment will be released whenever its onDestroyView() method is called. You will therefore have to re-call initialize(String, YouTubePlayer.OnInitializedListener) whenever the activity associated with this fragment is recreated, even if the fragment instance is retained across activity re-creation by setting setRetainInstance(boolean).
You may be tempted to put init() in onActivityCreated but that's too late, since onStart was already called and layout already performed.
Counterpart to onDestroyView is onViewCreated and that's the perfect candidate.
#Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
init();
}
As suggested call setRetainInstance(true) in the fragment's constructor. When the activity is recreated the fragment will not be recreated, only its UI will go through lifecycle events.

I see the same error reported from a Huawei cellphone.
I see an explanation here:
https://github.com/youtube/yt-android-player/issues/23
Not sure if there is a way to catch the exception in our code.

The problem is the initialization of the Youtube fragment. YouTubePlayerSupportFragment has to be extended in a class of yours and overrides some methods. You have to control the screen orientation and the onSaveInstanceState.
public class YouTubePlayerFragment extends YouTubePlayerSupportFragment {
private YouTubePlayer mPlayer;
public static YouTubePlayerFragment newInstance() {
return new YouTubePlayerFragment();
}
#Override public void onCreate(Bundle bundle) {
super.onCreate(bundle);
setRetainInstance(true);
}
#Override
public void initialize(String s, YouTubePlayer.OnInitializedListener onInitializedListener) {
super.initialize(s, new YouTubePlayer.OnInitializedListener() {
#Override public void onInitializationSuccess(YouTubePlayer.Provider provider,
YouTubePlayer youTubePlayer, boolean b) {
mPlayer = youTubePlayer;
onInitializedListener.onInitializationSuccess(provider, youTubePlayer, b);
}
#Override public void onInitializationFailure(YouTubePlayer.Provider provider,
YouTubeInitializationResult youTubeInitializationResult) {
onInitializedListener.onInitializationFailure(provider, youTubeInitializationResult);
}
});
}
#Override public void onDestroyView() {
if (mPlayer != null) {
mPlayer.release();
}
super.onDestroyView();
}
public YouTubePlayer getPlayer() {
return mPlayer;
}
}
YoutubeFragment.class
public class YoutubeFragment extends Fragment {
private static final String EXTRA_PLAYED_VIDEO = "EXTRA_PLAYED_VIDEO";
private static final String EXTRA_IS_PLAYING = "EXTRA_IS_PLAYING";
private static final String YOUTUBE_FRAGMENT = "YOUTUBE_FRAGMENT";
private static final String EXTRA_YOUTUBE_ID = "EXTRA_YOUTUBE_ID";
private RelativeLayout youtubeLayoutContainer;
private String youtubeId;
private int playedVideo;
private boolean isPlaying;
YouTubePlayer.OnInitializedListener onInitializedListener =
new YouTubePlayer.OnInitializedListener() {
#Override
public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer player,
boolean wasRestored) {
if (!wasRestored) {
setYouTubePlayer(player);
}
}
#Override public void onInitializationFailure(YouTubePlayer.Provider provider,
YouTubeInitializationResult error) {
}
};
public static YoutubeFragment newInstance(String youtubeId) {
YoutubeFragment youtubeElements = new YoutubeFragment();
Bundle bundle = new Bundle();
bundle.putString(EXTRA_YOUTUBE_ID, youtubeId);
youtubeElements.setArguments(bundle);
return youtubeElements;
}
#Override public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setRetainInstance(true);
}
#Nullable #Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container,
#Nullable Bundle savedInstanceState) {
View mView = inflater.inflate(R.layout.view_youtube_elements_item, container, false);
initViews(mView);
initYoutubeFragment();
return mView;
}
private void initViews(View view) {
youtubeLayoutContainer = (RelativeLayout) view.findViewById(R.id.youtubeLayoutContainer);
youtubeLayoutContainer.getViewTreeObserver()
.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
#TargetApi(Build.VERSION_CODES.JELLY_BEAN) #Override public void onGlobalLayout() {
FrameLayout.LayoutParams lp =
new FrameLayout.LayoutParams(FrameLayout.LayoutParams.WRAP_CONTENT,
FrameLayout.LayoutParams.MATCH_PARENT);
youtubeLayoutContainer.setLayoutParams(lp);
if (AndroidSdkVersion.hasJellyBean16()) {
youtubeLayoutContainer.getViewTreeObserver().removeOnGlobalLayoutListener(this);
}
}
});
}
private void initYoutubeFragment() {
try {
YouTubePlayerFragment youTubePlayerFragment2 = YouTubePlayerFragment.newInstance();
youTubePlayerFragment2.initialize(BuildConfig.YOUTUBE_DEVELOPER_KEY, onInitializedListener);
if (this.getActivity() != null && !this.getActivity().isFinishing()) {
getChildFragmentManager().beginTransaction()
.replace(R.id.youtubePlayerFragmentContent, youTubePlayerFragment2, YOUTUBE_FRAGMENT)
.commitAllowingStateLoss();
}
} catch (Exception ignored) {
}
}
public void setYouTubePlayer(final YouTubePlayer player) {
try {
if (player == null) {
return;
}
player.setShowFullscreenButton(true);
player.setPlayerStyle(YouTubePlayer.PlayerStyle.DEFAULT);
if (playedVideo >= 0) {
if (playedVideo == 0 || isPlaying) {
player.loadVideo(youtubeId, playedVideo);
} else {
player.cueVideo(youtubeId, playedVideo);
}
}
} catch (Exception ignored) {
}
}
#Override public void onViewCreated(View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
if (savedInstanceState != null) {
playedVideo = savedInstanceState.getInt(EXTRA_PLAYED_VIDEO);
isPlaying = savedInstanceState.getBoolean(EXTRA_IS_PLAYING);
}
}
#Override public void onSaveInstanceState(Bundle outState) {
try {
YouTubePlayerFragment youTubePlayerSupportFragment =
(YouTubePlayerFragment) getChildFragmentManager().findFragmentByTag(YOUTUBE_FRAGMENT);
YouTubePlayer mPlayer = youTubePlayerSupportFragment.getPlayer();
if (mPlayer != null) {
outState.putInt(EXTRA_PLAYED_VIDEO, mPlayer.getCurrentTimeMillis());
outState.putBoolean(EXTRA_IS_PLAYING, mPlayer.isPlaying());
}
} catch (Exception ignored) {
}
super.onSaveInstanceState(outState);
}
}
Activity containing Youtube Fragment
public class YoutubeContentDataActivity extends BaseActivity {
private static final String EXTRA_YOUTUBE_VIDEO_ID = "EXTRA_YOUTUBE_VIDEO_ID";
private static final String TAG_RETAINED_FRAGMENT = "TAG_RETAINED_FRAGMENT";
public static void open(Context context, String videoId) {
Intent intent = new Intent(context, YoutubeContentDataActivity.class);
intent.putExtra(EXTRA_YOUTUBE_VIDEO_ID, videoId);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);
}
#Override public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_youtube_main_container_layout);
FragmentManager fm = getSupportFragmentManager();
YoutubeFragment youtubeElementsFragment =
(YoutubeFragment) fm.findFragmentByTag(TAG_RETAINED_FRAGMENT);
// create the fragment and data the first time
if (youtubeElementsFragment == null) {
String videoId = getIntent().getStringExtra(EXTRA_YOUTUBE_VIDEO_ID);
// videoId = "17uHCHfgs60";//"ikO91fQBsTQ";
youtubeElementsFragment = YoutubeFragment.newInstance(videoId);
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.youtube_main_container, youtubeElementsFragment, TAG_RETAINED_FRAGMENT)
.commit();
}
}
#Override public void onPause() {
super.onPause();
if (isFinishing()) {
FragmentManager fm = getSupportFragmentManager();
YoutubeFragment youtubeElementsFragment =
(YoutubeFragment) fm.findFragmentByTag(TAG_RETAINED_FRAGMENT);
fm.beginTransaction().remove(youtubeElementsFragment).commit();
}
}
}

I could fix this error by using a ProgressDialog to wait until the player is loaded.

How to play a video with the YouTube API using YouTubePlayerFragment?

I'm trying to play video in my Fragment. However, I cannot get it to work. If I'm extending 'YoutubeFailureRecovery' I get:
09-06 21:56:40.472: E/AndroidRuntime(4946): Caused by: java.lang.IllegalStateException: A YouTubePlayerView can only be created with an Activity which extends YouTubeBaseActivity as its context.
This is my .xml:
<com.google.android.youtube.player.YouTubePlayerView
android:id="#+id/player"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
And this is the class:
public class YoutubeFragment extends YoutubeFailureRecovery {
YouTubePlayer player;
YouTubePlayerView playerView;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle arg2) {
// TODO Auto-generated method stub
return inflater.inflate(R.layout.detailview, container, false);
}
#Override
public void onStart() {
// TODO Auto-generated method stub
super.onStart();
playerView = (YouTubePlayerView)getActivity().findViewById(R.id.player);
playerView.initialize(DataHolder.DEVELOPER_KEY, this);
}
#Override
public void onInitializationSuccess(Provider provider, YouTubePlayer player,
boolean wasRestored) {
// TODO Auto-generated method stub
player.cueVideo("nCgQDjiotG0");
}
#Override
protected Provider getYouTubePlayerProvider() {
// TODO Auto-generated method stub
return playerView;
}
}
public abstract class YoutubeFailureRecovery extends YouTubePlayerSupportFragment implements YouTubePlayer.OnInitializedListener{
I just don't know what to do. I tried to extend my Fragment class with 'YoutubePlayerSupportFragment', tried to add a video-like fragment in XML, but nothing is working (error inflating). Maybe someone has some experience with using YouTube API in Fragment?

The YouTubePlayerView only works with an Activity that extends
YouTubeBaseActivity.
If you want to use Fragments you have to use the YoutubePlayerFragment / SupportFragment.
You can for example create your custom Fragment that inherits from YoutubePlayerSupportFragment:
public class VideoFragment extends YouTubePlayerSupportFragment {
public VideoFragment() { }
public static VideoFragment newInstance(String url) {
VideoFragment f = new VideoFragment();
Bundle b = new Bundle();
b.putString("url", url);
f.setArguments(b);
f.init();
return f;
}
private void init() {
initialize("yourapikey", new OnInitializedListener() {
#Override
public void onInitializationFailure(Provider arg0, YouTubeInitializationResult arg1) { }
#Override
public void onInitializationSuccess(YouTubePlayer.Provider provider, YouTubePlayer player, boolean wasRestored) {
if (!wasRestored) {
player.cueVideo(getArguments().getString("url"));
}
}
});
}
}
In code it could look like this:
VideoFragment f = VideoFragment.newInstance("your-video-url");
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container, f).commit();
The "fragment_container" in this case should be an empty FrameLayout.