/***
Copyright (c) 2013-2015 CommonsWare, LLC
Licensed under the Apache License, Version 2.0 (the "License"); you may not
use this file except in compliance with the License. You may obtain a copy
of the License at http://www.apache.org/licenses/LICENSE-2.0. Unless required
by applicable law or agreed to in writing, software distributed under the
License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS
OF ANY KIND, either express or implied. See the License for the specific
language governing permissions and limitations under the License.
Covered in detail in the book _The Busy Coder's Guide to Android Development_
https://commonsware.com/Android
*/
package com.commonsware.android.databind.basic;
import android.app.ListFragment;
import android.databinding.DataBindingUtil;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.Toast;
import com.commonsware.android.databind.basic.databinding.RowBinding;
import com.squareup.picasso.Picasso;
import java.util.List;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import retrofit2.Retrofit;
import retrofit2.converter.gson.GsonConverterFactory;
public class QuestionsFragment extends ListFragment implements
Callback<SOQuestions> {
interface Contract {
void onQuestion(Item question);
}
@Override
public View onCreateView(LayoutInflater inflater,
ViewGroup container,
Bundle savedInstanceState) {
View result=
super.onCreateView(inflater, container, savedInstanceState);
setRetainInstance(true);
Retrofit retrofit=
new Retrofit.Builder()
.baseUrl("https://api.stackexchange.com")
.addConverterFactory(GsonConverterFactory.create())
.build();
StackOverflowInterface so=
retrofit.create(StackOverflowInterface.class);
so.questions("android").enqueue(this);
return(result);
}
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
Item item=((ItemsAdapter)getListAdapter()).getItem(position);
((Contract)getActivity()).onQuestion(item);
}
@Override
public void onFailure(Call<SOQuestions> call, Throwable exception) {
Toast.makeText(getActivity(), exception.getMessage(),
Toast.LENGTH_LONG).show();
Log.e(getClass().getSimpleName(),
"Exception from Retrofit request to StackOverflow", exception);
}
@Override
public void onResponse(Call<SOQuestions> call,
Response<SOQuestions> response) {
setListAdapter(new ItemsAdapter(response.body().items));
}
class ItemsAdapter extends ArrayAdapter<Item> {
ItemsAdapter(List<Item> items) {
super(getActivity(), R.layout.row, R.id.title, items);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
RowBinding rowBinding=
DataBindingUtil.getBinding(convertView);
if (rowBinding==null) {
rowBinding=
RowBinding.inflate(getActivity().getLayoutInflater(),
parent, false);
}
Item item=getItem(position);
ImageView icon=rowBinding.icon;
rowBinding.setItem(item);
Picasso.with(getActivity()).load(item.owner.profileImage)
.fit().centerCrop()
.placeholder(R.drawable.owner_placeholder)
.error(R.drawable.owner_error).into(icon);
return(rowBinding.getRoot());
}
}
}