从 viewpager 2 停止并释放 exoplayer
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【中文标题】从 viewpager 2 停止并释放 exoplayer【英文标题】：stop and release exoplayer from viewpager 2 【发布时间】：2020-10-11 09:42:54 【问题描述】：我正在使用带有 ViewPager2 的 Exoplayer。
Home Fragment.java
public class HomeFragment extends Fragment
View view;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState)
view= inflater.inflate(R.layout.fragment_home, container, false);
ViewPager2 verticalViewPager = view.findViewById(R.id.vPager);
verticalViewPager.setOrientation(ViewPager2.ORIENTATION_VERTICAL);
ArrayList<VideoDataModel> dataset = new ArrayList<VideoDataModel>();
VideoDataModel videoData = new VideoDataModel();
videoData.setId("1");
videoData.setUrl("https://cdn.videvo.net/videvo_files/video/free/2019-02/small_watermarked/181004_10_LABORATORIES-SCIENCE_22_preview.webm");
videoData.setUserid("112800058400468785815");
videoData.setDescription("Video 1");
dataset.add(videoData);
VideoDataModel videoData1 = new VideoDataModel();
videoData1.setId("2");
videoData1.setUrl("https://cdn.videvo.net/videvo_files/video/premium/video0122/small_watermarked/100a%20Factory_preview.webm");
videoData1.setUserid("112800058400468785815");
videoData1.setDescription("Video 2");
dataset.add(videoData1);
ViewPagerAdapter viewPagerAdapter = new ViewPagerAdapter(view.getContext(),dataset);
verticalViewPager.setAdapter(viewPagerAdapter);
return view;
@Override
public void onResume()
super.onResume();
BottomNavigationView bottomNavigationView = ((MainActivity) getActivity()).findViewById(R.id.bottom_navigation);
bottomNavigationView.setBackground( new ColorDrawable(getResources().getColor(android.R.color.black)));
bottomNavigationView.setItemTextColor(ColorStateList.valueOf(Color.WHITE));
bottomNavigationView.setItemIconTintList(ColorStateList.valueOf(Color.WHITE));
fragment_home.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_
android:layout_
android:background="#000000"
tools:context=".Home.HomeFragment">
<androidx.viewpager2.widget.ViewPager2
android:layout_
android:layout_
android:id="@+id/vPager"/>
</FrameLayout>
ViewpagerAdapter.java
public class ViewPagerAdapter extends RecyclerView.Adapter<ViewPagerAdapter.ViewHolder>
Context mContext;
LinearLayout sourdImage_layout;
ImageView soundImage;
LinearLayout shared_layout;
LinearLayout comment_layout;
LinearLayout like_layout;
FrameLayout profile_lt;
LinearLayout gift_layout;
LinearLayout collab_layout;
Button check_bal_btn;
LinearLayout upload;
SharedPreferences pref;
LinearLayout shop;
ArrayList<VideoDataModel> videoDataset;
public ViewPagerAdapter(Context mContext, ArrayList<VideoDataModel> videoDataset)
this.mContext = mContext;
this.videoDataset = videoDataset;
@NonNull
@Override
public ViewPagerAdapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup container, int viewType)
LayoutInflater mLayoutInflater = LayoutInflater.from(container.getContext());
View itemView = mLayoutInflater.inflate(R.layout.customviewpager, container, false);
ViewHolder viewHolder = new ViewHolder(itemView);
soundImage = itemView.findViewById(R.id.sound_image);
sourdImage_layout = itemView.findViewById(R.id.sound_image_layout);
shared_layout = itemView.findViewById(R.id.shared_layout);
comment_layout = itemView.findViewById(R.id.comment_layout);
like_layout = itemView.findViewById(R.id.like_layout);
profile_lt = itemView.findViewById(R.id.profile_lt);
gift_layout = itemView.findViewById(R.id.gift_layout);
collab_layout = itemView.findViewById(R.id.collab_layout);
upload = itemView.findViewById(R.id.upload);
shop = itemView.findViewById(R.id.shop);
like_layout.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View view)
Toast.makeText(view.getContext(),"Released",Toast.LENGTH_SHORT).show();
);
pref = mContext.getSharedPreferences(Variables.pref_name, 0); // 0 - for private mode
upload.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View view)
if( pref.getBoolean(Variables.islogin,false)!=false)
Intent intent1 = new Intent(mContext, VideoRecorderActivity.class);
mContext.startActivity(intent1);
else
Toast.makeText(mContext,"Pls Login to Continue...",Toast.LENGTH_SHORT).show();
);
shop.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View view)
if( pref.getBoolean(Variables.islogin,false)!=false)
Intent intent1 = new Intent(mContext, ShopActivity.class);
mContext.startActivity(intent1);
else
Toast.makeText(mContext,"Pls Login to Continue...",Toast.LENGTH_SHORT).show();
);
final BottomSheetDialog CommentBottomSheetDialog = new BottomSheetDialog(mContext);
View sheetView = mLayoutInflater.inflate(R.layout.comment_bottom_sheet, null);
CommentBottomSheetDialog.setContentView(sheetView);
//
final BottomSheetDialog GiftBottomSheetDialog = new BottomSheetDialog(mContext);
View giftSheetView = mLayoutInflater.inflate(R.layout.gift_bottom_sheet, null);
check_bal_btn = giftSheetView.findViewById(R.id.check_bal_btn);
GiftBottomSheetDialog.setContentView(giftSheetView);
check_bal_btn.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View view)
Intent intent1 = new Intent(mContext, WalletActivity.class);
mContext.startActivity(intent1);
);
final BottomSheetDialog collabBottomSheetDialog = new BottomSheetDialog(mContext);
View collabSheetView = mLayoutInflater.inflate(R.layout.collab_bottom_sheet, null);
collabBottomSheetDialog.setContentView(collabSheetView);
RotateAnimation rotate = new RotateAnimation(
0, 360,
Animation.RELATIVE_TO_SELF, 0.5f,
Animation.RELATIVE_TO_SELF, 0.5f
);
rotate.setDuration(4800);
rotate.setRepeatCount(Animation.INFINITE);
sourdImage_layout.startAnimation(rotate);
//share button
shared_layout.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View view)
Intent intent = new Intent();
intent.setAction(Intent.ACTION_SEND);
intent.putExtra(Intent.EXTRA_TEXT,"I suggest this app for you : https://play.google.com/store/apps/details?id=com.android.chrome");
intent.setType("text/plain");
mContext.startActivity(intent);
);
//Comments
comment_layout.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View view)
if( pref.getBoolean(Variables.islogin,false)!=false)
CommentBottomSheetDialog.show();
else
Toast.makeText(mContext,"Pls Login to Continue...",Toast.LENGTH_SHORT).show();
);
//Gift
gift_layout.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View view)
if( pref.getBoolean(Variables.islogin,false)!=false)
GiftBottomSheetDialog.show();
else
Toast.makeText(mContext,"Pls Login to Continue...",Toast.LENGTH_SHORT).show();
);
//Collab
collab_layout.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View view)
if( pref.getBoolean(Variables.islogin,false)!=false)
collabBottomSheetDialog.show();
else
Toast.makeText(mContext,"Pls Login to Continue...",Toast.LENGTH_SHORT).show();
);
//Open Others Profile
profile_lt.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View view)
if( pref.getBoolean(Variables.islogin,false)!=false)
Intent intent1 = new Intent(mContext, OthersProfileActivity.class);
intent1.putExtra("userID", "111805417824620727725");
mContext.startActivity(intent1);
else
Toast.makeText(mContext,"Pls Login to Continue...",Toast.LENGTH_LONG).show();
);
return viewHolder;
@Override
public void onBindViewHolder(@NonNull ViewPagerAdapter.ViewHolder holder, int position)
MediaSource videoSource = new ExtractorMediaSource.Factory(holder.datasourceFactory
).createMediaSource(Uri.parse(videoDataset.get(position).getUrl()));
holder.player.prepare(videoSource);
holder.player.setPlayWhenReady(true);
holder.player.setRepeatMode(Player.REPEAT_MODE_ONE);
holder.playerView.setUseController(false);
holder.playerView.hideController();
holder.playerView.setShowBuffering(true);
holder.playerView.setResizeMode(AspectRatioFrameLayout.RESIZE_MODE_FILL);
holder.username.setText(videoDataset.get(position).getUserid());
holder.description.setText(videoDataset.get(position).getDescription());
@Override
public int getItemCount()
return videoDataset.size();
public static class ViewHolder extends RecyclerView.ViewHolder
private PlayerView playerView;
private SimpleExoPlayer player;
DataSource.Factory datasourceFactory;
TextView username;
TextView description;
public ViewHolder(View itemView)
super(itemView);
playerView = itemView.findViewById(R.id.playerview);
username = itemView.findViewById(R.id.username);
description = itemView.findViewById(R.id.desc_txt);
player = ExoPlayerFactory.newSimpleInstance(itemView.getContext(),new DefaultTrackSelector());
playerView.setPlayer(player);
datasourceFactory= new DefaultDataSourceFactory(itemView.getContext(),
Util.getUserAgent(itemView.getContext(), "videoApp"));
customviewPager.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:background="@color/black"
android:layout_
android:layout_
xmlns:app="http://schemas.android.com/tools"
app:ignore="NamespaceTypo">
<androidx.cardview.widget.CardView
android:id="@+id/card_view"
android:layout_
android:layout_
android:padding="0dp"
card_view:cardBackgroundColor="@color/transparent">
<RelativeLayout
android:layout_
android:layout_
android:id="@+id/mainlayout">
<com.google.android.exoplayer2.ui.PlayerView
android:layout_
android:layout_
android:id="@+id/playerview"
app:show_buffering="when_playing"
app:controller_layout_id="@layout/item_player_contoller"
android:layout_gravity="center"
app:surface_type="surface_view"
/>
</RelativeLayout>
</androidx.cardview.widget.CardView>
</RelativeLayout>
我想在滑动页面时释放并停止播放器。只有当前正在查看的页面应该运行 exoplayer。运行所有播放器会导致性能问题。我尝试使用 onViewDetachedFromWindow 方法释放播放器，但如果我向后滑动，我的播放器无法播放...
【问题讨论】：
【参考方案1】：在 viewpager 片段 onresume 中再次初始化你的播放器，因为你已经释放了播放器的表面。
【讨论】：
【参考方案2】：ViewPager 具有 callback 功能，可能对您的情况有所帮助
onPageScrolled() — 当前页面发生滚动事件时触发
onPageSelected() — 选择新页面时触发
onPageScrollStateChanged() — 当滚动状态改变时触发
您可以在选择新页面时停止旧的exoplayer 并启动新页面
【讨论】：
【参考方案3】：覆盖 ViewpagerAdapter.java 类中的以下方法
和类viewholder函数如下图
@Override
public void onViewDetachedFromWindow(@NonNull VideoPlayerViewHolder holder)
super.onViewDetachedFromWindow(holder);
holder.pausePlayer();
holder.releasePlayer();
@Override
public void onViewAttachedToWindow(@NonNull VideoPlayerViewHolder holder)
super.onViewAttachedToWindow(holder);
holder.startPlayer();
ViewHolder 函数
public void startPlayer()
player.setPlayWhenReady(true);
player.getPlaybackState();
public void pausePlayer()
player.setPlayWhenReady(false);
player.getPlaybackState();
public void releasePlayer()
player.setPlayWhenReady(false);
player.release();
player.stop(true);
如果有任何错误请告诉我..？
【讨论】：
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