Android imageview clicking showing a null object reference

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public class VideosAdapter extends RecyclerView.Adapter<VideosAdapter.VideoViewHolder>{
private List<VideoItem> mVideoItems;

this is above is one class

i tried below in mainactivity to click on imageview

rvOneAdapter.moreoptiontovideo.setOnClickListener(new View.OnClickListener(){

            public void onClick(View view) {
                Toast.makeText(getApplicationContext(),"Here",Toast.LENGTH_LONG);
                BottomSheetDialog bottomSheet = new BottomSheetDialog();
                bottomSheet.show(bottomSheet.getChildFragmentManager(),
                        "ModalBottomSheet");
                // return true;
            }
        });

but imageview still not able to click.
how to call click on imageview

What I have tried:

rvOneAdapter.moreoptiontovideo.setOnClickListener(new View.OnClickListener(){

            public void onClick(View view) {
                Toast.makeText(getApplicationContext(),"Here",Toast.LENGTH_LONG);
                BottomSheetDialog bottomSheet = new BottomSheetDialog();
                bottomSheet.show(bottomSheet.getChildFragmentManager(),
                        "ModalBottomSheet");
                // return true;
            }
        });

public class VideosAdapter extends RecyclerView.Adapter<VideosAdapter.VideoViewHolder>{
private List<VideoItem> mVideoItems;

Posted 16-May-22 18:33pm

Member 9354001

Updated 16-May-22 19:12pm

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OriginalGriff · Answer 1 · 2022-05-16T19:05:00

This is one of the most common problems we get asked, and it's also the one we are least equipped to answer, but you are most equipped to answer yourself.

Let me just explain what the error means: You have tried to use a variable, property, or a method return value but it contains null - which means that there is no instance of a class in the variable.
It's a bit like a pocket: you have a pocket in your shirt, which you use to hold a pen. If you reach into the pocket and find there isn't a pen there, you can't sign your name on a piece of paper - and you will get very funny looks if you try! The empty pocket is giving you a null value (no pen here!) so you can't do anything that you would normally do once you retrieved your pen. Why is it empty? That's the question - it may be that you forgot to pick up your pen when you left the house this morning, or possibly you left the pen in the pocket of yesterday's shirt when you took it off last night.

We can't tell, because we weren't there, and even more importantly, we can't even see your shirt, much less what is in the pocket!

Back to computers, and you have done the same thing, somehow - and we can't see your code, much less run it and find out what contains null when it shouldn't.
But you can - and your IDE will help you here. Run your program in the debugger and when it fails, it will show you the line it found the problem on. You can then start looking at the various parts of it to see what value is null and start looking back through your code to find out why. So put a breakpoint at the beginning of the method containing the error line, and run your program from the start again. This time, the debugger will stop before the error, and let you examine what is going on by stepping through the code looking at your values.

But we can't do that - we don't have your code, we don't know how to use it if we did have it, we don't have your data. So try it - and see how much information you can find out!

Member 9354001 · Answer 2 · 2022-05-16T19:12:00

public class VideosAdapter extends RecyclerView.Adapter<VideosAdapter.VideoViewHolder>{
    private List<VideoItem> mVideoItems;

    public VideosAdapter(List<VideoItem> videoItems) {
        mVideoItems = videoItems;
    }

    @NonNull
    @Override
    public VideoViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {


        return new VideoViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_videos_container,parent,false));

    }

    @Override
    public void onBindViewHolder(@NonNull VideoViewHolder holder, int position) {
        holder.setVideoData(mVideoItems.get(position));
    }

    @Override
    public int getItemCount() {
        return mVideoItems.size();
    }

    static class VideoViewHolder extends RecyclerView.ViewHolder{
        VideoView mVideoView;
        TextView txtTitle,txtDesc;
        ProgressBar mProgressBar;
        static ImageView moreoptiontovideo;

        public VideoViewHolder(@NonNull View itemView) {
            super(itemView);
            mVideoView = itemView.findViewById(R.id.videoView);
            txtTitle = itemView.findViewById(R.id.textVideoTitle);
            txtDesc = itemView.findViewById(R.id.textVideoDescription);
            mProgressBar = itemView.findViewById(R.id.progressBar);
            moreoptiontovideo = itemView.findViewById(R.id.moreoptiontovideo);
            itemView.setOnClickListener(onClick());


        }
        public View.OnClickListener onClick() {
            Toast.makeText(moreoptiontovideo.getContext(), itemView.getId()+"TextView Clicked!", Toast.LENGTH_LONG).show();
            if(itemView.getId()==R.id.moreoptiontovideo)
                Toast.makeText(moreoptiontovideo.getContext(), "TextView Clicked!", Toast.LENGTH_LONG).show();
            return null;
        }

        void setVideoData(VideoItem videoItem){
            txtTitle.setText(videoItem.videoTitle);
            txtDesc.setText(videoItem.videoDesc);
            mVideoView.setVideoPath(videoItem.videoURL);
            mVideoView.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
                @Override
                public void onPrepared(MediaPlayer mp) {
                    mProgressBar.setVisibility(View.GONE);
                    mp.start();

                    float videoRatio = mp.getVideoWidth() / (float)mp.getVideoHeight();
                    float screenRatio = mVideoView.getWidth() / (float)mVideoView.getHeight();
                    float scale  = videoRatio / screenRatio;
                    if (scale >= 1f){
                        mVideoView.setScaleX(scale);
                    }else {
                        mVideoView.setScaleY(1f / scale);
                    }
                }
            });
            mVideoView.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
                @Override
                public void onCompletion(MediaPlayer mp) {
                    mp.start();
                }

            });
        }
    }
}

i tried above code "moreoptiontovideo" id imageview not able to click , please help someone

Android imageview clicking showing a null object reference

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