How to display image in a listview from json response in android

问题

Hi in the below code am displaying data from json response using retrofit library. using recylerview am displaying title,id,albumid as well as image.all are displaying except image .

But how to display image from url. can any one please help me this is my adapter class.

.java

public class RecyclerViewAdapterForAlbum extends RecyclerView.Adapter<RecyclerViewAdapterForAlbum.ViewHolder> {

    private List<UserAlbum> item;
    Context context ;

    public RecyclerViewAdapterForAlbum(Context context, List<UserAlbum> item ) {
        Log.d("123", "RecyclerViewAdapter");
        this.item = item;
        this.context = context;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        Log.d("123", "onCreateViewHolder");
        View view = LayoutInflater.from(context).inflate(R.layout.activity_second, null);

        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        Log.d("123", "onBindViewHolder");
        holder.user_id.setText(String.valueOf(item.get(position).getId()));
        holder.album_id.setText(String.valueOf(item.get(position).getAlbumId()));
        holder.title.setText(item.get(position).getTitle());
        //Bitmap getBitMapFromUrl=null;
       holder.imageForText.setImageResource(item.get(position).getThumbnailUrl());
    }

    @Override
    public int getItemCount() {
        Log.d("123", "getItemCount");
        return item.size();
    }

    public class ViewHolder extends RecyclerView.ViewHolder {
        public TextView album_id, user_id,title;
        public ImageView imageForText;

        public ViewHolder(View itemView) {
            super(itemView);
            Log.d("123", "ViewHolder");


            user_id = (TextView) itemView.findViewById(R.id.user_id);
            album_id=(TextView)itemView.findViewById(R.id.album_id);
            title=(TextView)itemView.findViewById(R.id.title);
            imageForText=(ImageView)itemView.findViewById(R.id.img_id);


            itemView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
//                    int pos = getAdapterPosition();
//                    int userID=item.get(pos).getId();
//                    Intent myIntent = new Intent(v.getContext(), SecondActivity.class);
//                    myIntent.putExtra("userId",userID);
//                    context.startActivity(myIntent);

                }
            });
        }


    }
}

回答1:

Using Picasso:

Add this line to your app-level build.gradle file.

implementation 'com.squareup.picasso:picasso:2.71828'

And you can simply set image to ImageView by:

Picasso.get().load(item.get(position).getThumbnailUrl()).into(holder.imageForText);

Using Glide:

Add these lines to your app-level build.gradle file.

implementation 'com.github.bumptech.glide:glide:4.8.0'
annotationProcessor 'com.github.bumptech.glide:compiler:4.8.0'

And you can simply set image to ImageView by:

GlideApp.with(this).load(item.get(position).getThumbnailUrl()).into(holder.imageForText);

回答2:

You can use library for that, like Picasso

implementation 'com.squareup.picasso:picasso:2.71828'

To use it :

Picasso.get().load("IMG URL").into(YOURIMAGEVIEW);

回答3:

You have to use such type of libaray like picasso or universal image loader etc for load image on Your ImageView like in this I am using picaso

implementation 'com.squareup.picasso:picasso:2.71828'

Picasso.get().load(item.get(position).getThumbnailUrl()).into(imageForText);

来源：https://stackoverflow.com/questions/53299107/how-to-display-image-in-a-listview-from-json-response-in-android

标签

android

retrofit

imageurl