Android Open Source - SDCrimeZone S D Crime Summary Activity

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Back to project page SDCrimeZone.

License

The source code is released under:

Apache License

Java Source Code

package com.crimezone.sd;
/* w  w w.ja  va 2 s  .  c om*/
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.graphics.Color;
import android.graphics.Typeface;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.TableRow.LayoutParams;
import android.widget.TextView;

public class SDCrimeSummaryActivity extends Activity implements View.OnClickListener {

  private String myResults = "";

  // Need handler for callbacks to the UI thread
  Handler _handler = new Handler();
  ProgressDialog _loadingDialog;

  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    String year = getIntent().getExtras().getString("year");

    _loadingDialog = ProgressDialog.show(this, "Detecting Crime", "Loading. Please wait...", true);

    // Create runnable for posting
    Runnable runnableForPosting = new Runnable() {
      public void run() {
        try {
          populateResultsPage();
        } catch (JSONException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
        }
      }
    };

    myResults = getIntent().getExtras().getString("results");

    SDCrimeSummaryWorker workerThread = new SDCrimeSummaryWorker(this, getIntent(), myResults,
        _handler, runnableForPosting);
    workerThread.start();
  }

  /**
   * Handles the Crime List onclick functions. For any onclicks in this view.
   * 
   * @param v
   */
  public void onClick(View v) {

    _loadingDialog.show();

    if (v.getId() == R.id.viewCrimesListButton) {
      Intent intent = new Intent();
      Bundle bun = new Bundle();

      bun.putString("results", getIntent().getExtras().getString("results"));
      bun.putString("startLat", getIntent().getExtras().getString("startLat"));
      bun.putString("startLng", getIntent().getExtras().getString("startLng"));
      bun.putString("radius", getIntent().getExtras().getString("radius"));
      bun.putString("year", getIntent().getExtras().getString("year"));
      intent.setClass(this, SDPopulateCrimeListActivity.class);
      intent.putExtras(bun);

      _loadingDialog.hide();
      startActivity(intent);

    }

  }

  public void populateResultsPage() throws JSONException {

    setContentView(R.layout.summary);

    Button viewCrimesDetailedListButton = (Button) this.findViewById(R.id.viewCrimesListButton);
    viewCrimesDetailedListButton.setOnClickListener(this);

    Double radius = Double.valueOf(getIntent().getExtras().getString("radius"));
    String year = getIntent().getExtras().getString("year");
    LinearLayout goodLayout = (LinearLayout) this.findViewById(R.id.goodResultsList);
    LinearLayout badLayout = (LinearLayout) this.findViewById(R.id.badResultsList);
    HashMap<String, Integer> incidentMap = new HashMap<String, Integer>();

    LayoutParams tParams = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT,
        1f);
    tParams.setMargins(10, 2, 10, 2);

    System.out.println(myResults);

    JSONArray results = new JSONArray(myResults);

    if (myResults == null) {
      // TODO: display an elegent error message, if no results found
      // return user to main
    } else {
      for (int i = 0; i < results.length(); i++) {
        JSONObject obj = results.getJSONObject(i);
        String bcc = (String) obj.get("bcc");
        if (!incidentMap.containsKey(bcc)) {
          incidentMap.put(bcc, Integer.valueOf(1));
        } else {
          Integer num = incidentMap.get(bcc);
          int newNum = num.intValue() + 1;
          incidentMap.put(bcc, new Integer(newNum));
        }
      }

      List<String> sortedKeys = new ArrayList(SDCrimeZoneApplication.bccMap.keySet());
      Collections.sort(sortedKeys);

      int countBadIncidents = 0;
      List<String> goodIncidents = new ArrayList<String>();

      TextView goodTitle = new TextView(this);
      goodTitle.setText("Here's the good news:"); // get incident type, based on
                                                  // bcc code
      LayoutParams titleParams = new LayoutParams(LayoutParams.WRAP_CONTENT,
          LayoutParams.WRAP_CONTENT, 1f);
      titleParams.setMargins(10, 2, 10, 2);
      goodTitle.setSingleLine(false);
      goodTitle.setTypeface(Typeface.SANS_SERIF);
      goodTitle.setTextSize(20f);
      goodTitle.setTextColor(Color.GREEN);
      goodLayout.addView(goodTitle, titleParams);

      TextView badTitle = new TextView(this);
      badTitle.setText("Here's some other news:"); // get incident type, based
                                                   // on bcc code
      // LayoutParams badTitleParams = new
      // LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, 1f);
      badTitle.setSingleLine(false);
      badTitle.setTypeface(Typeface.SANS_SERIF);
      badTitle.setTextSize(20f);
      badTitle.setTextColor(Color.RED);
      badTitle.setSingleLine(false);
      badTitle.setTypeface(Typeface.SANS_SERIF);
      badTitle.setTextSize(20f);
      badTitle.setTextColor(Color.RED);
      badLayout.addView(badTitle, titleParams);

      for (String bcc : sortedKeys) {
        /* Create a new row to be added. */
        TextView t = new TextView(this);
        TextView n = new TextView(this);
        if (!incidentMap.containsKey(bcc)) {
          incidentMap.put(bcc, Integer.valueOf(0));
        }
        double percentage = 0.0;
        Double total = Double.valueOf(SDCrimeZoneApplication.bccAverage2011.get(bcc));

        percentage = 100.00 - (Math.abs((total.doubleValue() - incidentMap.get(bcc).doubleValue())
            / (total.doubleValue())) * 100);
        t.setText(" for San Diego occured within a " + radius + " mile(s) radius."); // get
                                                                                     // incident
                                                                                     // type,
                                                                                     // based
                                                                                     // on
                                                                                     // bcc
                                                                                     // code

        t.setSingleLine(false);
        t.setTypeface(Typeface.SANS_SERIF);
        t.setTextSize(10f);

        String crimeName = "";
        if ("AMSZ".indexOf(bcc, 0) >= 0) {
          crimeName = SDCrimeZoneApplication.bccMap.get(bcc);
        } else {
          crimeName = SDCrimeZoneApplication.bccMap.get(bcc) + " crimes";
        }

        // if less than 3% of this type of crime, than show under good results
        if (percentage < 3.0 * radius.doubleValue() * radius.doubleValue()) {
          n.setTextColor(Color.GREEN);
          if (incidentMap.get(bcc) == null || incidentMap.get(bcc).doubleValue() == 0.0) {
            goodIncidents.add(bcc);
          } else {
            n.setText(String.format("Only %.2f", percentage) + "% of " + crimeName);
            n.setTextSize(12f);
          }

          if (!String.valueOf(percentage).equals("NaN")) {
            if (incidentMap.get(bcc) != null && incidentMap.get(bcc).doubleValue() != 0.0) {
              goodLayout.addView(n, tParams);
              goodLayout.addView(t, tParams);
            }
          }
        } else {
          n.setTextColor(Color.RED);
          n.setText(String.format("%.2f", percentage) + "% of " + crimeName);
          n.setTextSize(12f);
          if (!String.valueOf(percentage).equals("NaN")) {
            badLayout.addView(n, tParams);
            badLayout.addView(t, tParams);
            countBadIncidents++;
          }
        }

      }
      if (goodIncidents.size() > 0) {
        TextView n = new TextView(this);
        TextView t = new TextView(this);
        n.setTextColor(Color.GREEN);
        String crimeName = "";
        for (int i = 0; i < goodIncidents.size(); i++) {
          crimeName += SDCrimeZoneApplication.bccMap.get(goodIncidents.get(i));
          if (i < goodIncidents.size() - 1) {
            crimeName += ", ";
          }
        }
        n.setText("No reports of " + crimeName);
        t.setText(" within " + radius + " mile(s) radius in " + year + ".");
        t.setTypeface(Typeface.SANS_SERIF);
        t.setTextSize(10f);
        goodLayout.addView(n, tParams);
        goodLayout.addView(t, tParams);
      }
      if (countBadIncidents == 0) {
        findViewById(R.id.badSummaryLayout).setVisibility(View.GONE);
      }
    }

    _loadingDialog.cancel();
  }

}

Java Source Code List

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