Java tutorial
/* * Copyright (C) 2015 The Android Open Source Project * * 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. */ package com.foodie.app.fragment; import android.content.Context; import android.graphics.Bitmap; import android.os.Bundle; import android.support.annotation.Nullable; import android.support.v4.app.Fragment; import android.support.v4.widget.SwipeRefreshLayout; import android.support.v7.widget.DefaultItemAnimator; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.text.TextUtils; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ImageView; import android.widget.TextView; import android.widget.Toast; import com.foodie.app.Entity.JsonListResult; import com.foodie.app.Entity.Result; import com.foodie.app.R; import com.foodie.app.model.WorksInfo; import com.foodie.app.util.HttpUtils; import com.google.gson.Gson; import com.google.gson.reflect.TypeToken; import com.loopj.android.http.AsyncHttpResponseHandler; import com.nostra13.universalimageloader.core.DisplayImageOptions; import com.nostra13.universalimageloader.core.ImageLoader; import java.lang.reflect.Type; import java.util.List; import cz.msebera.android.httpclient.Header; public class MyMessageFragment extends Fragment { protected static final String TAG = "MessageFragment"; private RecyclerView worksListView; private List<WorksInfo> worksInfos; //private WorksListAdapter worksListAdapter; private SwipeRefreshLayout sr; private TextView noDataView; @Nullable @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = (View) inflater.inflate(R.layout.fragment_message_me, container, false); //Item? worksListView = (RecyclerView) view.findViewById(R.id.recyclerview); worksListView.setItemAnimator(new DefaultItemAnimator()); sr = (SwipeRefreshLayout) view.findViewById(R.id.sr); noDataView = (TextView) view.findViewById(R.id.no_data); return view; } @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); worksListView.setLayoutManager(new LinearLayoutManager(worksListView.getContext())); updateWorksInfo(); sr.setColorSchemeResources(R.color.colorPrimary, android.R.color.holo_green_light, android.R.color.holo_orange_light, android.R.color.holo_red_light); sr.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() { @Override public void onRefresh() { updateWorksInfo(); sr.setRefreshing(false); } }); } private void updateWorksInfo() { if (HttpUtils.isNetworkConnected(getActivity())) { HttpUtils.getWithAuth(getContext(), "works/me/", new AsyncHttpResponseHandler() { @Override public void onSuccess(int statusCode, Header[] headers, byte[] responseBody) { Gson gson = new Gson(); //Type type = new TypeToken<JsonResult<User>>(){}.getType(); Type type = new TypeToken<JsonListResult<WorksInfo>>() { }.getType(); JsonListResult<WorksInfo> jsonListResult = gson.fromJson(new String(responseBody), type); String status = jsonListResult.getStatus(); worksInfos = jsonListResult.getData(); //Log.v(TAG,data); if (TextUtils.equals(status, Result.SUCCESS) && worksInfos.size() > 0) { //Toast.makeText(getActivity(),"?"+worksInfos.size(),Toast.LENGTH_LONG).show(); Log.i(TAG, new String(responseBody)); worksListView.setAdapter( new MessageListAdapter(getActivity().getApplicationContext(), worksInfos)); return; } else if (TextUtils.equals(status, Result.SUCCESS) && worksInfos.size() == 0) { noDataView.setVisibility(View.VISIBLE); //Toast.makeText(getActivity(),"??",Toast.LENGTH_LONG).show(); } else { //Toast.makeText(getActivity(),"???",Toast.LENGTH_LONG).show(); } } @Override public void onFailure(int statusCode, Header[] headers, byte[] responseBody, Throwable error) { Toast.makeText(getActivity(), "!", Toast.LENGTH_LONG).show(); } }); } else { Toast.makeText(getActivity(), "!", Toast.LENGTH_LONG).show(); } } public static class MessageListAdapter extends RecyclerView.Adapter<MessageListAdapter.ViewHolder> { private List<WorksInfo> worksList; private Context context; private static final int IS_HEADER = 2; private static final int IS_NORMAL = 1; //private boolean isUserLogin=getUserState(); private MyItemClickListener myItemClickListener = new MyItemClickListener() { @Override public void onItemClick(View view, int position, int type) { switch (type) { case 1: TextView v = (TextView) view; //v.setText(); break; } } }; public interface MyItemClickListener { void onItemClick(View view, int postion, int type); } public void setMyItemClickListener(MyItemClickListener listener) { myItemClickListener = listener; } public void setWorks(List<WorksInfo> works) { this.worksList = works; } public static class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener { public int mViewType; public View mView; public TextView mPostTimeView; public ImageView mWorksImageView; public TextView mIntroductionView; public MyItemClickListener mOnClickListener; public ViewHolder(View view, int viewType, MyItemClickListener listener) { super(view); mView = view; mViewType = viewType; if (viewType == IS_HEADER) { return; } mPostTimeView = (TextView) view.findViewById(R.id.tv_post_time); mWorksImageView = (ImageView) view.findViewById(R.id.iv_works_image); mIntroductionView = (TextView) view.findViewById(R.id.tv_introduction); mOnClickListener = listener; //init(); } @Override public void onClick(View v) { switch (v.getId()) { case R.id.follow_tv: mOnClickListener.onItemClick(v, getPosition(), 1); } } } public MessageListAdapter(Context context, List<WorksInfo> works) { super(); this.context = context; this.worksList = works; } @Override public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { //RecyclerViewHolder holder; //??flag??Holder if (viewType == IS_HEADER) { View view = LayoutInflater.from(context).inflate(R.layout.message_header, parent, false); return new ViewHolder(view, IS_HEADER, myItemClickListener); } else if (viewType == IS_NORMAL) { View view = LayoutInflater.from(context).inflate(R.layout.list_item_works_me, parent, false); return new ViewHolder(view, IS_NORMAL, myItemClickListener); } return null; } @Override public void onBindViewHolder(final ViewHolder holder, int position) { // //?? // if(holder.mViewType==IS_HEADER){ // return; // }else if (holder.mViewType==IS_NORMAL){ // position=position-1; // } DisplayImageOptions worksImageOptions = new DisplayImageOptions.Builder() .showImageOnLoading(R.drawable.loading_large).showImageOnFail(R.drawable.recipe) .cacheInMemory(true).cacheOnDisk(true).bitmapConfig(Bitmap.Config.RGB_565).build(); ImageLoader.getInstance().displayImage(worksList.get(position).getThumbnail(), holder.mWorksImageView, worksImageOptions); holder.mIntroductionView.setText(worksList.get(position).getIntroduction()); holder.mPostTimeView.setText(worksList.get(position).getCreateTime()); } @Override public int getItemCount() { return worksList.size(); } @Override public int getItemViewType(int position) { return IS_NORMAL; } } }