129 lines
3.2 KiB
Java
Executable File
129 lines
3.2 KiB
Java
Executable File
/**
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*
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*/
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package me.caesar2011.vpherder.teachersubstitution;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.StringWriter;
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import java.net.MalformedURLException;
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import java.net.URL;
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import java.net.URLConnection;
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import java.util.ArrayList;
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import me.caesar2011.vpherder.R;
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import me.caesar2011.vpherder.views.PullToRefreshListView;
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import me.caesar2011.vpherder.views.PullToRefreshListView.OnRefreshListener;
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import org.apache.commons.io.IOUtils;
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import org.json.JSONException;
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import android.app.Activity;
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import android.os.AsyncTask;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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/**
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* Class to organize the drawings of the teacher substition.
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*
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* @author BastiLapTop
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*
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*/
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public class TSCreate {
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private final Activity activity;
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private final LayoutInflater inflater;
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private final ViewGroup container;
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private static TSjsonObject JsonObject;
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private boolean downloadStarted;
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private TSAdapter adapter;
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private PullToRefreshListView listview;
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/**
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* Constructor
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*/
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public TSCreate(Activity activity, LayoutInflater inflater, ViewGroup container) {
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this.activity = activity;
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this.inflater = inflater;
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this.container = container;
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this.downloadStarted = false;
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if(JsonObject == null){
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StartDownload();
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}
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}
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public View Draw() {
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View rootView = inflater.inflate(R.layout.fragment_teacher_substitution,
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container, false);
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listview = (PullToRefreshListView) rootView.findViewById(R.id.listview);
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listview.setOnRefreshListener(new OnRefreshListener() {
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@Override
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public void onRefresh() {
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StartDownload();
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}
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});
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System.out.println(JsonObject);
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adapter = new TSAdapter(activity,
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R.layout.teacher_substitution_row_remark, (JsonObject!=null)?JsonObject.announcements:(new ArrayList<TSjsonAnnouncement>()));
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listview.setAdapter(adapter);
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return rootView;
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}
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public void StartDownload() {
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if (!downloadStarted) {
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downloadStarted = true;
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try {
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URL url = new URL("https://vpherder.canis.uberspace.de/example.json");
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DownloadFilesTask downloadSubstitutions = new DownloadFilesTask();
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downloadSubstitutions.execute(url);
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} catch (MalformedURLException e) {
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downloadStarted = false;
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}
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}
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}
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public void FinishDownload() {
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downloadStarted = false;
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adapter.clear();
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adapter.addAll(JsonObject.announcements);
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adapter.notifyDataSetChanged();
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listview.onRefreshComplete();
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}
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private class DownloadFilesTask extends AsyncTask<URL, Integer, String> {
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protected String doInBackground(URL... urls) {
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String file = "";
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URL url = urls[0];
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URLConnection connection;
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try {
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connection = url.openConnection();
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InputStream inputStream = connection.getInputStream();
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StringWriter writer = new StringWriter();
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IOUtils.copy(inputStream, writer, "UTF-8");
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file = writer.toString();
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} catch (IOException e) {
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}
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return file;
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}
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protected void onProgressUpdate(Integer... progress) {
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//setProgressPercent(progress[0]);
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}
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protected void onPostExecute(String result) {
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try {
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JsonObject = new TSjsonObject(result);
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} catch (JSONException e) {
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}
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FinishDownload();
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}
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}
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}
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