changes made

source/libs/src/me/caesar2011/vpherder/teachersubstitution/TSCreate.java

@@ -0,0 +1,128 @@
+/**
+ * 
+ */
+package me.caesar2011.vpherder.teachersubstitution;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.StringWriter;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLConnection;
+import java.util.ArrayList;
+
+import me.caesar2011.vpherder.R;
+import me.caesar2011.vpherder.views.PullToRefreshListView;
+import me.caesar2011.vpherder.views.PullToRefreshListView.OnRefreshListener;
+
+import org.apache.commons.io.IOUtils;
+import org.json.JSONException;
+
+import android.app.Activity;
+import android.os.AsyncTask;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+/**
+ * Class to organize the drawings of the teacher substition.
+ * 
+ * @author BastiLapTop
+ *
+ */
+public class TSCreate {
+
+	private final Activity activity;
+	private final LayoutInflater inflater;
+	private final ViewGroup container;
+	private static TSjsonObject JsonObject;
+	private boolean downloadStarted;
+	private TSAdapter adapter;
+	private PullToRefreshListView listview;
+
+	/**
+	 * Constructor
+	 */
+	public TSCreate(Activity activity, LayoutInflater inflater, ViewGroup container) {
+		this.activity = activity;
+		this.inflater = inflater;
+		this.container = container;
+		this.downloadStarted = false;
+		
+		if(JsonObject == null){
+			StartDownload();
+		}
+	}
+	
+	public View Draw() {
+		View rootView = inflater.inflate(R.layout.fragment_teacher_substitution,
+				container, false);
+		
+		listview = (PullToRefreshListView) rootView.findViewById(R.id.listview);
+		listview.setOnRefreshListener(new OnRefreshListener() {
+
+			@Override
+			public void onRefresh() {
+				StartDownload();
+			}
+			
+		});
+		System.out.println(JsonObject);
+	    adapter = new TSAdapter(activity,
+	    		R.layout.teacher_substitution_row_remark, (JsonObject!=null)?JsonObject.announcements:(new ArrayList<TSjsonAnnouncement>()));
+	    listview.setAdapter(adapter);
+		return rootView;
+	}
+
+	public void StartDownload() {
+		if (!downloadStarted) {
+			downloadStarted = true;
+			try {
+				URL url = new URL("https://vpherder.canis.uberspace.de/example.json");
+				DownloadFilesTask downloadSubstitutions = new DownloadFilesTask();
+				downloadSubstitutions.execute(url);
+			} catch (MalformedURLException e) {
+				downloadStarted = false;
+			}
+		}
+	}
+
+	public void FinishDownload() {
+		downloadStarted = false;
+		adapter.clear();
+		adapter.addAll(JsonObject.announcements);
+		adapter.notifyDataSetChanged();
+		listview.onRefreshComplete();
+	}
+	
+	private class DownloadFilesTask extends AsyncTask<URL, Integer, String> {
+		
+		protected String doInBackground(URL... urls) {
+			String file = "";
+	        URL url = urls[0];
+			URLConnection connection;
+			try {
+				connection = url.openConnection();
+				InputStream inputStream = connection.getInputStream();
+
+				StringWriter writer = new StringWriter();
+				IOUtils.copy(inputStream, writer, "UTF-8");
+				file = writer.toString();
+			} catch (IOException e) {
+			}
+	        return file;
+	    }
+
+		protected void onProgressUpdate(Integer... progress) {
+	        //setProgressPercent(progress[0]);
+	    }
+		
+		protected void onPostExecute(String result) {
+			try {
+				JsonObject = new TSjsonObject(result);
+			} catch (JSONException e) {
+			}
+			FinishDownload();
+		}
+	}
+}