Android Recyclerview仅在方向更改后填充
我有两个片段,A和B。片段B包含recyclerview,在加载片段B时填充它。但是,当我在片段B中按back并返回到片段A时,我尝试再次返回到片段B,但没有填充recyclerview 奇怪的是,在我改变屏幕方向后,它确实会被填充 返回片段B后,如何填充recyclerview 在片段B的onCreateView中设置适配器:Android Recyclerview仅在方向更改后填充,android,android-recyclerview,Android,Android Recyclerview,我有两个片段,A和B。片段B包含recyclerview,在加载片段B时填充它。但是,当我在片段B中按back并返回到片段A时,我尝试再次返回到片段B,但没有填充recyclerview 奇怪的是,在我改变屏幕方向后,它确实会被填充 返回片段B后,如何填充recyclerview 在片段B的onCreateView中设置适配器: @Override public View onCreateView(LayoutInflater inflater, ViewGroup container,
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState)
{
recyclerView = (RecyclerView) view.findViewById(R.id.rvPlaylists);
recyclerView.setHasFixedSize(true);
layoutManager = new GridLayoutManager(getActivity(),1);
recyclerView.setLayoutManager(layoutManager);
PlaylistAdapter adapter = new PlaylistAdapter(savedPlaylists);
recyclerView.setAdapter(adapter);
}
public void navigateFromPlaylistFragmentToSavedPlaylistFragment()
{
getFragmentManager().beginTransaction().replace(R.id.activity_main, new SavedPlaylistFragment()).addToBackStack("navigatefromplaylistfragmenttosavedplaylistfragment")
.commit();
}
适配器:
public class PlaylistAdapter extends
RecyclerView.Adapter<PlaylistAdapter.ViewHolder>
{
private Context mContext;
private ArrayList<Playlist> mPlaylists;
private LayoutInflater mInflater;
public PlaylistAdapter(ArrayList<Playlist> playlists)
{
mPlaylists = playlists;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType)
{
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.playlist_recyclerview_item, parent, false);
return new ViewHolder(v);
}
@Override
public void onBindViewHolder(ViewHolder holder, int position)
{
Playlist currentPlaylist = mPlaylists.get(position);
holder.tvName.setText(currentPlaylist.getName());
holder.btnPlayPlaylist.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
Log.d("btn clicked","mlk");
}
});
}
@Override
public int getItemCount()
{
return mPlaylists.size();
}
public class ViewHolder extends RecyclerView.ViewHolder
{
public TextView tvName;
public ImageButton btnPlayPlaylist;
public ViewHolder(View v)
{
super(v);
tvName = (TextView) v.findViewById(R.id.lblPlaylistName);
btnPlayPlaylist = (ImageButton) v.findViewById(R.id.btnPlayPlaylist);
}
}
您没有调用适配器.notifyDataSetChanged()代码>初始化适配器并填充数据后。FragmentTransaction=getFragmentManager().beginTransaction();transaction.detach(this.attach)(this.commit();试试这个……我不知道该把它放在哪里。我正在用replace方法在我的主活动中加载片段,它加载得很好,但问题是没有填充我的recyclerview。你用什么生命周期方法设置适配器?onCreateView,onCreate?在onCreateView中,这不起作用。当recyclerview中的数据没有更改时,我也遇到了问题。