我把图像放在s3bucket上的aws上。但不知何故，毕加索无法从s3桶下载图像。
错误stacktarce如下所示：
03-09 15:43:45.503 9620-9620/demand.inn.com.quflip.production W/System.err: java.net.UnknownHostException: Unable to resolve host "s3.amazonaws.com": No address associated with hostname
03-09 15:43:45.504 9620-9620/demand.inn.com.quflip.production W/System.err: at java.net.InetAddress.lookupHostByName(InetAddress.java:427)
03-09 15:43:45.504 9620-9620/demand.inn.com.quflip.production W/System.err: at java.net.InetAddress.getAllByNameImpl(InetAddress.java:252)
03-09 15:43:45.504 9620-9620/demand.inn.com.quflip.production W/System.err: at java.net.InetAddress.getAllByName(InetAddress.java:215)
03-09 15:43:45.504 9620-9620/demand.inn.com.quflip.production W/System.err: at com.android.okhttp.HostResolver$1.getAllByName(HostResolver.java:29)
03-09 15:43:45.504 9620-9620/demand.inn.com.quflip.production W/System.err: at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:232)
03-09 15:43:45.504 9620-9620/demand.inn.com.quflip.production W/System.err: at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:124)
03-09 15:43:45.504 9620-9620/demand.inn.com.quflip.production W/System.err: at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:272)
03-09 15:43:45.504 9620-9620/demand.inn.com.quflip.production W/System.err: at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:211)
03-09 15:43:45.504 9620-9620/demand.inn.com.quflip.production W/System.err: at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:382)
03-09 15:43:45.504 9620-9620/demand.inn.com.quflip.production W/System.err: at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:332)
03-09 15:43:45.504 9620-9620/demand.inn.com.quflip.production W/System.err: at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:500)
03-09 15:43:45.504 9620-9620/demand.inn.com.quflip.production W/System.err: at com.android.okhttp.internal.http.DelegatingHttpsURLConnection.getResponseCode(DelegatingHttpsURLConnection.java:105)
03-09 15:43:45.505 9620-9620/demand.inn.com.quflip.production W/System.err: at com.android.okhttp.internal.http.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:25)
03-09 15:43:45.505 9620-9620/demand.inn.com.quflip.production W/System.err: at com.squareup.picasso.UrlConnectionDownloader.load(UrlConnectionDownloader.java:93)
03-09 15:43:45.505 9620-9620/demand.inn.com.quflip.production W/System.err: at com.squareup.picasso.NetworkRequestHandler.load(NetworkRequestHandler.java:47)
03-09 15:43:45.505 9620-9620/demand.inn.com.quflip.production W/System.err: at com.squareup.picasso.BitmapHunter.hunt(BitmapHunter.java:206)
03-09 15:43:45.505 9620-9620/demand.inn.com.quflip.production W/System.err: at com.squareup.picasso.BitmapHunter.run(BitmapHunter.java:159)
03-09 15:43:45.505 9620-9620/demand.inn.com.quflip.production W/System.err: at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:422)
03-09 15:43:45.505 9620-9620/demand.inn.com.quflip.production W/System.err: at java.util.concurrent.FutureTask.run(FutureTask.java:237)
03-09 15:43:45.505 9620-9620/demand.inn.com.quflip.production W/System.err: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
03-09 15:43:45.505 9620-9620/demand.inn.com.quflip.production W/System.err: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
03-09 15:43:45.505 9620-9620/demand.inn.com.quflip.production W/System.err: at java.lang.Thread.run(Thread.java:818)
03-09 15:43:45.505 9620-9620/demand.inn.com.quflip.production W/System.err: at com.squareup.picasso.Utils$PicassoThread.run(Utils.java:411)
PopularItemsAdapter.java
public class PopularItemsAdapter extends RecyclerView.Adapter<PopularItemsAdapter.MyViewHolder> {
public interface OnItemClickListener {
void onItemClick();
}
private Context mContext;
private List<FoodTruckItem> foodTruckItemList;
private OnItemClickListener listener;
public class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
public TextView itemTag, itemName, foodPrice, addText;
public ImageView itemImage;
public MyViewHolder(View view) {
super(view);
itemTag = (TextView) view.findViewById(R.id.itemTag);
itemImage = (ImageView) view.findViewById(R.id.itemImage);
itemName = (TextView) view.findViewById(R.id.itemName);
foodPrice = (TextView) view.findViewById(R.id.foodPrice);
addText = (TextView) view.findViewById(R.id.addText);
view.setOnClickListener(this);
}
@Override
public void onClick(View view) {
//passing the clicked position to the parent class
listener.onItemClick();
}
}
public PopularItemsAdapter(Context mContext, List<FoodTruckItem> foodTruckItemList, OnItemClickListener listener) {
this.mContext = mContext;
this.foodTruckItemList = foodTruckItemList;
this.listener = listener;
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.card_view_popular_items, parent, false);
return new MyViewHolder(itemView);
}
@Override
public void onBindViewHolder(final MyViewHolder holder, int position) {
FoodTruckItem foodTruckItem = foodTruckItemList.get(position);
holder.itemName.setText(foodTruckItem.getItemName());
// holder.itemTag.setText(foodTruckItem.getSpecialTag());
holder.foodPrice.setText("$" + String.valueOf(foodTruckItem.getItemPrice()));
// holder.itemImage.setImageResource(R.drawable.image_food);
// Picasso.with(mContext)
// .load(foodTruckItem.getItemImg())
// .into(holder.itemImage, new com.squareup.picasso.Callback() {
// @Override
// public void onSuccess() {
// Toast.makeText(mContext, "loaded", Toast.LENGTH_LONG).show();
//
// }
//
// @Override
// public void onError() {
// Toast.makeText(mContext, "not loaded", Toast.LENGTH_LONG).show();
// }
// });
Picasso.Builder builder = new Picasso.Builder(mContext);
builder.listener(new Picasso.Listener() {
@Override
public void onImageLoadFailed(Picasso picasso, Uri uri, Exception exception) {
exception.printStackTrace();
}
});
builder.build().load(foodTruckItem.getItemImg()).into(holder.itemImage);
setFontStyle(holder);
}
private void setFontStyle(MyViewHolder holder) {
holder.itemName.setTypeface(Typeface.createFromAsset(mContext.getAssets(), Consts.montserrat_bold));
holder.itemTag.setTypeface(Typeface.createFromAsset(mContext.getAssets(), Consts.montserrat_bold));
holder.foodPrice.setTypeface(Typeface.createFromAsset(mContext.getAssets(), Consts.montserrat_bold));
holder.addText.setTypeface(Typeface.createFromAsset(mContext.getAssets(), Consts.montserrat_bold));
}
@Override
public int getItemCount() {
return foodTruckItemList.size();
}
}
PopularItemsFragment.java
public class PopularItemsFragment extends Fragment implements PopularItemsAdapter.OnItemClickListener {
private RecyclerView recyclerView;
private PopularItemsAdapter popularItemsAdapter;
private List<FoodTruckItem> foodTruckItemList = new ArrayList<>();
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_popular_items, container, false);
recyclerView = (RecyclerView) view.findViewById(R.id.recycler_view);
popularItemsAdapter = new PopularItemsAdapter(getActivity(), foodTruckItemList, this);
RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(getActivity());
recyclerView.setLayoutManager(mLayoutManager);
recyclerView.setAdapter(popularItemsAdapter);
if (InternetConnection.checkConnection(getActivity())) {
//If the internet is working then only make the request
Observable<GenericResponse<List<FoodTruckItem>>> results = RetroClient.getApiService().getItemList();
results.subscribeOn(Schedulers.io()).observeOn(AndroidSchedulers.mainThread())
.subscribe(new Subscriber<GenericResponse<List<FoodTruckItem>>>() {
@Override
public void onCompleted() {
unsubscribe();
}
@Override
public void onError(Throwable e) {
}
@Override
public void onNext(GenericResponse<List<FoodTruckItem>> response) {
foodTruckItemList.addAll(response.getData());
popularItemsAdapter.notifyDataSetChanged();
}
});
} else {
Snackbar.make(view, R.string.string_internet_connection_warning, Snackbar.LENGTH_INDEFINITE).show();
}
return view;
}
@Override
public void onItemClick() {
}
}
如果我将s3bucket网址粘贴到浏览器中，则会成功加载图片。但不知何故，picaso无法识别它。还有其他方法吗？