java - 图像 + 视频混合在 RecyclerView 中

Question

我正在尝试检查 RecyclerView 中的图像和视频可用性，但挑战是 VideoView 是所有项目列表中唯一可见的， >ImageView 根本不可见，我想要的是检查图像是否存在于 ImageView 和 Videoview GOES 中，以及视频何时在 VideoView< 中可用 ImageView 开始。

我正在开发一个应用程序，它可以发布视频和图像并在同一个 RecyclerView 中检索它们，所以请帮助我如何实现这一目标

下面是我的代码，但它不起作用:

boolean hasDrawable = (viewHolder.imagePost.getDrawable()!= null);

String hasVideo_string =(String)viewHolder.videoLayout.getTag();
boolean hasVideo = Boolean.parseBoolean(hasVideo_string);

if(hasDrawable){
   viewHolder.setTitle(model.getEventTitle());
   viewHolder.setDesc(model.getEventDescription());
   viewHolder.setImage(c, model.getEventImage());
   viewHolder.videoLayout.setVisibility(View.INVISIBLE);
   }

else if(hasVideo) {
  viewHolder.setTitle(model.getEventTitle());
  viewHolder.setDesc(model.getEventDescription());
  viewHolder.setVideo(c, model.getEventVideo());
  viewHolder.imagePost.setVisibility(View.GONE);
  }

这就是我在 ViewHolder 类中设置图像和视频的方式

public void setImage(final Context c,final String imageUrl){
    //
    Picasso.with(c).load(imageUrl).error(R.mipmap.add_btn).fit().centerInside().placeholder(R.mipmap.add_btn)
                    .networkPolicy(NetworkPolicy.OFFLINE).into(imagePost, new Callback() {
                @Override
                public void onSuccess() {

                }

                @Override
                public void onError() {

                    //Reloading an image again ...
                    Picasso.with(c).load(imageUrl).error(R.mipmap.add_btn).placeholder(R.mipmap.add_btn)
                            .into(imagePost);
                }
            });

        }

和视频(我使用了一个名为 FullscreenVideoLayout 的库，它类似于 VideoView 但经过了很多自定义)

public void setVideo(final Context c, final String videoUrl){

   // videoLayout.setActivity(this);
   // videoLayout.setActivity(get);

    Uri videoUri = Uri.parse(videoUrl);
    try {
        videoLayout.setVideoURI(videoUri);
        videoLayout.setTag(videoUrl);

    } catch (IOException e) {
        e.printStackTrace();
    }
}

这是完整的ViewHolder类

public static class BlogViewHolder extends RecyclerView.ViewHolder{


        View mView;
        private ImageView imagePost;
        private FullscreenVideoLayout videoLayout;
          private VideoView videoView;

        public BlogViewHolder(View itemView) {
            super(itemView);
            mView=itemView;
          imagePost =(ImageView)mView.findViewById(R.id.post_image);
           videoLayout = (FullscreenVideoLayout) mView.findViewById(R.id.post_video);

        }
        public void setTitle(String title){

            TextView post_title = (TextView)mView.findViewById(R.id.post_title);
            post_title.setText(title);

        }

        public void setDesc(String desc){

            TextView post_desc = (TextView)mView.findViewById(R.id.post_desc);
            post_desc.setText(desc);
        }


        public void setImage(final Context c,final String imageUrl){

       //

            Picasso.with(c).load(imageUrl).error(R.mipmap.add_btn).fit().centerInside().placeholder(R.mipmap.add_btn)
                    .networkPolicy(NetworkPolicy.OFFLINE).into(imagePost, new Callback() {
                @Override
                public void onSuccess() {

                }

                @Override
                public void onError() {

                    //Reloading an image again ...
                    Picasso.with(c).load(imageUrl).error(R.mipmap.add_btn).placeholder(R.mipmap.add_btn)
                            .into(imagePost);
                }
            });

        }

        public void setVideo(final Context c, final String videoUrl){


           // videoLayout.setActivity(this);
           // videoLayout.setActivity(get);

            Uri videoUri = Uri.parse(videoUrl);
            try {
                videoLayout.setVideoURI(videoUri);
                videoLayout.setTag(videoUrl);

            } catch (IOException e) {
                e.printStackTrace();
            }


        }

            }

Answer 1

我发现您正在使用 Firebase，因此您获取了视频和图像 getEventImage() 和 的 Url getEventVideo() ，只需检查 Urls 是否为空并删除 ImageView 和 VideoView 的可见性。

下面是示例代码，请尝试一下:

 public void setImage(final Context c,final String imageUrl){

            try {
                if (imageUrl!=null) {
                    //

                    Picasso.with(c).load(imageUrl).error(R.mipmap.add_btn).fit().centerInside().placeholder(R.mipmap.add_btn)
                            .networkPolicy(NetworkPolicy.OFFLINE).into(imagePost, new Callback() {
                        @Override
                        public void onSuccess() {

                        }

                        @Override
                        public void onError() {

                            //Reloading an image again ...
                            Picasso.with(c).load(imageUrl).error(R.mipmap.add_btn).placeholder(R.mipmap.add_btn)
                                    .into(imagePost);
                        }
                    });





                } else {

                    imagePost.setVisibility(View.GONE);
                }
            }
            catch (Exception e){

            }

        }

        public void setVideo(final Context c, final String videoUrl){
            try {
                if (videoUrl!=null) {
                    try {
                        Uri videoUri = Uri.parse(videoUrl);
                        try {
                            videoLayout.setVideoURI(videoUri);
                            videoLayout.setTag(videoUrl);
                            String hasVideo_string = (String) videoLayout.getTag();
                            boolean hasVideo = Boolean.parseBoolean(hasVideo_string);


                        } catch (IOException e) {
                            e.printStackTrace();
                        }
                    } catch (Exception e) {
                        System.out.println("Error :" + e);
                    }

                } else {
                    videoLayout.setVisibility(View.GONE);
                }
            }
            catch (Exception e){

            }


        }

希望它对您有用。