Question

RecyclerView位图不显示所有位图图像只显示最后一个，但每个项目上显示文字

以下是我在项目中使用的适配器代码：

ArrayList<Bitmap> bitmapArrayList;
PathModel pathModel=pathList.get(position);
 holder.videoName= (TextView) myLayoutView.findViewById(R.id.FilePath);

holder.videoThumb= (CircularImageView) 
myLayoutView.findViewById(R.id.VideoThumbnail);
holder.videoName.setText(pathModel.getPath());

holder.videoThumb.setImageBitmap(bitmapArrayList.get(position));
VideoAdapter videoAdapter=new VideoAdapter(this,pathList,bitmapArrayList);
    layoutManager = new LinearLayoutManager(this);
    recyclerView.setLayoutManager(layoutManager);
    recyclerView.setAdapter(videoAdapter);

Click to see image

**更新的代码在我的适配器**

public class VideoAdapter extends RecyclerView.Adapter<VideoAdapter.ViewHolder>{
Context context;

ArrayList<PathModel> pathList;

View myLayoutView;

Bitmap bmThumbnail;

ArrayList<Bitmap> bitmapArrayList;


public VideoAdapter (Context context, ArrayList<PathModel> pathList, ArrayList<Bitmap> bitmapArrayList) {

    this.context = context;

    this.pathList=pathList;

    this.bitmapArrayList=bitmapArrayList;
    }  
@Override

public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

    myLayoutView = LayoutInflater.from(context).inflate(R.layout.video_list, 
null);

    return new ViewHolder(myLayoutView);

    }
 @Override

public void onBindViewHolder(ViewHolder myHolder,final int position) {

final ViewHolder holder = (ViewHolder ) myHolder;

PathModel pathModel=pathList.get(position);  

holder.videoName= (TextView) myLayoutView.findViewById(R.id.FilePath);

holder.videoThumb= (CircularImageView) 
myLayoutView.findViewById(R.id.VideoThumbnail);

holder.videoName.setText(pathModel.getPath());

holder.videoThumb.setImageBitmap(bitmapArrayList.get(position));

//    holder.videoThumb.setImageDrawable(new 
BitmapDrawable(context.getResources(),bitmapArrayList.get(position)));
//    holder.videoThumb.setImageResource(R.drawable.ab_add_student);
   //    

holder.videoThumb.setImageURI(Uri.parse(pathList.get(position).getPath()));

   }
@Override
public int getItemCount() {
    return this.pathList.size();
    }
class ViewHolder extends RecyclerView.ViewHolder {

TextView videoName;

CircularImageView videoThumb;

ViewHolder(View itemView) {
    super(itemView);
}
}
}

Answer 1

图像加载在android中是一项繁重的任务，因此在主线程中加载图像并不如使用Picasso或gild之类的外部库更好。

参考链接：https://inthecheesefactory.com/blog/get-to-know-glide-recommended-by-google/en

不要忘记检查图像路径是否为空：）

Answer 2

您应该在ViewHolder内执行findViewById而不是

RecyclerView位图不显示所有位图图像

2 个答案: