[英]Imageview in a recyclerview
I have an imageview in row.xml and I set a picture for it in xml layout. 我在row.xml中有一个imageview,并在xml布局中为其设置了图片。 But when I use that in adapter (onbindviewholder method) Not show any image .
但是当我在适配器(onbindviewholder方法)中使用它时,不显示任何图像。 But when I set image resource in onbindviewholder that works and show the image !!!
但是,当我在onbindviewholder中设置可以正常工作并显示图像的图像资源时! What is wrong in the first method ???
第一种方法有什么问题???
use 采用
holder.Image.setImageResource();
or you can use Glide or Picasso library to load images. 或者您可以使用Glide或Picasso库加载图像。
and also return the size of your list. 并返回列表的大小。
@Override
public int getItemCount() {
return contacts.size();
}
public class Adapter extends RecyclerView.Adapter<Adapter.vh> {
private List<Contacts> contacts;
public Adapter(List<Contacts> contacts) {
this.contacts = contacts;
}
public class vh extends RecyclerView.ViewHolder {
protected TextView first_name;
protected TextView last_name;
protected ImageView Image;
public vh(View v) {
super(v);
first_name = (TextView) v.findViewById(R.id.first);
last_name = (TextView) v.findViewById(R.id.last);
Image = (ImageView) v.findViewById(R.id.imageView);
}
}
@Override
public Adapter.vh onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.row, parent, false);
return new vh(v);
}
@Override
public void onBindViewHolder(vh holder, int position) {
Contacts example = contacts.get(position);
holder.first_name.setText(example.name);
holder.last_name.setText(example.last_name);
if (position == 3) {
holder.first_name.setTextColor(Color.BLUE);
}
}
@Override
public int getItemCount() {
}
}
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