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我想要做的是使用圖片url顯示圖片,我使用滑動庫加載這些圖片,但每當我嘗試運行應用程序時,圖片都無法顯示或不會加載該活動。我能看到正在顯示的文本而不是圖像使用Glide加載圖片網址時出錯
這是我得到
java.lang.IllegalArgumentException: You cannot start a load on a null Context
11-11 03:23:01.713 5428-5428/? W/System.err: at com.bumptech.glide.manager.RequestManagerRetriever.get(RequestManagerRetriever.java:84)
11-11 03:23:01.713 5428-5428/? W/System.err: at com.bumptech.glide.Glide.with(Glide.java:629)
這是代碼
public class SampleAdapter extends RecyclerView.Adapter <SampleAdapter.ViewHolder> {
private List<SampleModel> list;
private Context mContext = null;
public SampleAdapter(List<SampleModel> sampleModelList) {
this.list = sampleModelList;
}
@Override
public SampleAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.sample_item, parent, false);
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(WatchlistAdapter.ViewHolder holder, int position) {
String image = "https://image.tmdb.org/t/p/w500/9HE9xiNMEFJnCzndlkWD7oPfAOx.jpg";
try{
final SampleModel sample = list.get(holder.getAdapterPosition());
if(sample != null) {
holder.title.setText(sample.getTitle());
Glide.with(mContext).load(image)
.placeholder(R.drawable.placeholder)
.dontAnimate()
.fitCenter()
.crossFade()
.diskCacheStrategy(DiskCacheStrategy.ALL)
.into(holder.cover);
} else {
Glide.clear(holder.cover);
}
} catch(Exception e) {
e.printStackTrace();
}
}
@Override
public int getItemCount() {
return (list != null? list.size():0);
}
public class ViewHolder extends RecyclerView.ViewHolder {
public TextView title;
public ImageView cover;
public ViewHolder(View itemView) {
super(itemView);
title = (TextView) itemView.findViewById(R.id.title);
cover= (ImageView) itemView.findViewById(R.id.coverImage);
}
}
檢查你的mContext。可能你沒有正確初始化上下文,因此它是空的導致問題。 – oathkeeper
@oathkeeper我更新了我的代碼。請檢查 – BXUMZSE