package com.android.play;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import com.android.adapter.LoopPagerAdapter;
import com.android.adapter.NewsAdapter;
import com.android.entity.Constant;
import com.android.entity.NewsBean;
import com.android.hintview.ColorPointHintView;
import com.android.hintview.RollPagerView;
import com.squareup.picasso.Picasso;
import com.squareup.picasso.Target;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
/**
* Created by Administrator on 2016/6/11.
*/
public class HomePagerFragment extends Fragment {
private String TAG = Constant.TAG;
private ListView mListView;
private TextView mEmptyText;
private RollPagerView mRollViewPager;
private TestLoopAdapter mLoopAdapter;
private MoocLoopAdapter mMoocAdapter;
private List<Bitmap> bitmaps = new ArrayList<Bitmap>();
private static String URL = "http://www.imooc.com/api/teacher?type=4&num=30";
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
Log.i(TAG," HomepagerFragement : onCreateView");
return inflater.inflate(R.layout.home_fragementlayout,container, false);
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
Log.i(TAG," HomepagerFragement : onActivityCreated");
mListView = (ListView) getActivity().findViewById(R.id.lv_main);
mEmptyText = (TextView) getActivity().findViewById(R.id.empty_tab);
mRollViewPager= (RollPagerView)getActivity().findViewById(R.id.roll_view_pager);
mRollViewPager.setPlayDelay(2000);
// mRollViewPager.setAdapter(mLoopAdapter = new TestLoopAdapter(mRollViewPager));
// mRollViewPager.setHintView(new IconHintView(this,R.drawable.point_focus,R.drawable.point_normal));
mRollViewPager.setHintView(new ColorPointHintView(getActivity(), Color.YELLOW, Color.WHITE));
//mRollViewPager.setHintView(new TextHintView(this));
//mRollViewPager.setHintView(null);
new NewsAsyncTask().execute(URL);
new RollPagerAsyncTask().execute("");
}
//实现网络的异步访问
class NewsAsyncTask extends AsyncTask<String,Void,List<NewsBean>>/*网址，过程，结果*/{
@Override
protected List<NewsBean> doInBackground(String... params) {
return getJsonData(params[0]);
}
@Override
protected void onPostExecute(final List<NewsBean> newsBeen) {
super.onPostExecute(newsBeen);
Log.i(TAG," HomePagerFragment : onPostExecute = "+newsBeen.size());
if (newsBeen.size() > 1){
Log.i(TAG," HomePagerFragment : onPostExecute if= ");
mEmptyText.setVisibility(View.GONE);
}
Log.i(TAG, " 1 : "+newsBeen.get(2).newsIconUrl);
Log.i(TAG, " 2 : "+newsBeen.get(5).newsIconUrl);
Log.i(TAG, " 3 : "+newsBeen.get(8).newsIconUrl);
Log.i(TAG, " 4 : "+newsBeen.get(9).newsIconUrl);
Log.i(TAG, " 5 : "+newsBeen.get(11).newsIconUrl);
NewsAdapter adapter = new NewsAdapter(getActivity(), newsBeen, mListView);
mListView.setAdapter(adapter);
}
}
/*
* 将url对应得json格式数据转化为我们所封装的对象
*/
private List<NewsBean> getJsonData(String url) {
List<NewsBean> newsBeanList = new ArrayList<>();
try {
String jsonString = readStream(new URL(URL).openStream());
Log.i(TAG,"jsonString : "+jsonString);
JSONObject jsonObject;
NewsBean newsBean;
jsonObject = new JSONObject(jsonString);
JSONArray jsonArray = jsonObject.getJSONArray("data");
for (int i = 0 ; i< jsonArray.length();i++){
jsonObject = jsonArray.getJSONObject(i);
newsBean = new NewsBean();
newsBean.newsIconUrl = jsonObject.getString("picSmall");
newsBean.newsTitle = jsonObject.getString("name");
newsBean.newsContent= jsonObject.getString("description");
newsBeanList.add(newsBean);
}
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
return newsBeanList;
}
/*
* 通过is解析网页返回的数据
*/
private String readStream(InputStream is){
InputStreamReader isr;
String result = "";
try {
String line = "";
isr = new InputStreamReader(is,"utf-8");
BufferedReader br = new BufferedReader(isr);
while((line = br.readLine()) != null){
result += line;
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return result;
}
class RollPagerAsyncTask extends AsyncTask<String,Void,List<Bitmap>>{
@Override
protected List<Bitmap> doInBackground(String... params) {
bitmaps.add(getBitmapFromURL("http://img.mukewang.com/5523711700016d1606000338-300-170.jpg"));
bitmaps.add(getBitmapFromURL("http://img.mukewang.com/552640c300018a9606000338-300-170.jpg"));
bitmaps.add(getBitmapFromURL("http://img.mukewang.com/551b98ae0001e57906000338-300-170.jpg"));
bitmaps.add(getBitmapFromURL("http://img.mukewang.com/550b86560001009406000338-300-170.jpg"));
bitmaps.add(getBitmapFromURL("http://img.mukewang.com/5518ecf20001cb4e06000338-300-170.jpg"));
return bitmaps;
}
@Override
protected void onPostExecute(List<Bitmap> bitmaps) {
super.onPostExecute(bitmaps);
Log.i(TAG, "RollPaper size = "+ bitmaps.size());
if(bitmaps.size() > 1){
mRollViewPager.setAdapter(mMoocAdapter = new MoocLoopAdapter(mRollViewPager));
}else{
mRollViewPager.setAdapter(mLoopAdapter = new TestLoopAdapter(mRollViewPager));
}
mMoocAdapter.notifyDataSetChanged();
}
}
// 通过一个网络上的url来转换成图片
public Bitmap getBitmapFromURL(String urlString){
Bitmap bitmap;
InputStream is = null;
try {
URL url = new URL(urlString);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
is = new BufferedInputStream(connection.getInputStream());
bitmap = BitmapFactory.decodeStream(is);
connection.disconnect();
return bitmap;
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}finally {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
}
private class MoocLoopAdapter extends LoopPagerAdapter {
private int count = bitmaps.size();
public MoocLoopAdapter(RollPagerView viewPager) {
super(viewPager);
}
@Override
public View getView(ViewGroup container, int position) {
ImageView view = new ImageView(container.getContext());
view.setImageBitmap(bitmaps.get(position));
view.setScaleType(ImageView.ScaleType.CENTER_CROP);
Log.i("fenghaitao","===============getView==position="+position);
view.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
return view;
}
@Override
public int getRealCount() {
return count;
}
}
private class TestLoopAdapter extends LoopPagerAdapter {
private int[] imgs = {
R.drawable.img1,
R.drawable.img2,
R.drawable.img3,
R.drawable.img4,
R.drawable.img5,
};
private int count = imgs.length;
public void add(){
Log.i("RollViewPager","Add");
count++;
if (count>imgs.length)count = imgs.length;
notifyDataSetChanged();
}
public void minus(){
Log.i("RollViewPager","Minus");
count--;
if (count<1)count=1;
notifyDataSetChanged();
}
public TestLoopAdapter(RollPagerView viewPager) {
super(viewPager);
}
@Override
public View getView(ViewGroup container, int position) {
ImageView view = new ImageView(container.getContext());
view.setImageResource(imgs[position]);
view.setScaleType(ImageView.ScaleType.CENTER_CROP);
Log.i("fenghaitao","===============getView==position="+position);
view.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
return view;
}
@Override
public int getRealCount() {
return count;
}
}
}