Android Open Source - Langleo Stack Details

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License

The source code is released under:

Apache License

Java Source Code

package com.atteo.langleo_trial.activities;
/* w w w. j  a v  a2  s. c  o  m*/
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.HashMap;

import android.app.Dialog;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.CompoundButton.OnCheckedChangeListener;

import com.atteo.langleo_trial.Langleo;
import com.atteo.langleo_trial.R;
import com.atteo.langleo_trial.models.Collection;
import com.atteo.langleo_trial.models.Language;
import com.atteo.langleo_trial.models.Word;
import com.atteo.langleo_trial.util.BetterAsyncTask;

public class StackDetails extends ListActivity {

  private int stackId;
  private String stackName;
  private String stackDescription;

  private String content;
  private Collection collection;

  private boolean switchOrder;

  private ArrayList<Word> words;

  private static final int DIALOG_DOWNLOADING = 1;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.stack_details);
    setTitle("studystack.com");

    Intent intent = getIntent();
    stackId = Integer.valueOf(intent.getStringExtra("id"));
    stackName = intent.getStringExtra("name");
    stackDescription = intent.getStringExtra("description");
    collection = new Collection();
    collection.loadBundle(intent.getBundleExtra("collection"));
    collection.load();

    Language l;

    TextView tv = (TextView) findViewById(R.id.stack_details_name);
    tv.setText(stackName);
    tv = (TextView) findViewById(R.id.stack_details_description);
    tv.setText(stackDescription);
    tv = (TextView) findViewById(R.id.stack_details_base_language);
    l = collection.getBaseLanguage();
    l.load();
    tv.setText(l.getName());
    tv = (TextView) findViewById(R.id.stack_details_target_language);
    l = collection.getTargetLanguage();
    l.load();
    tv.setText(l.getName());

    getListView().setClickable(false);

    CheckBox checkbox = (CheckBox) findViewById(R.id.stack_details_switch_order);
    checkbox.setOnCheckedChangeListener(new OnCheckedChangeListener() {
      public void onCheckedChanged(CompoundButton buttonView,
          boolean isChecked) {
        switchOrder = isChecked;
        loadWordsFromString(content);
        updateExample();
      }

    });

    Button button = (Button) findViewById(R.id.stack_details_download);
    button.setOnClickListener(new OnClickListener() {
      public void onClick(View v) {
        download();
      }

    });

    loadStack();
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.stack_details, menu);
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem menuItem) {
    switch (menuItem.getItemId()) {
    case R.id.stack_details_help:
      showHelp();
      break;
    }
    return true;
  }

  private void showHelp() {
    Intent intent = new Intent(this, Help.class);
    intent.putExtra("part", "list_details");
    startActivity(intent);
  }

  @Override
  public Dialog onCreateDialog(int dialog) {
    ProgressDialog progressDialog;
    switch (dialog) {
    case DIALOG_DOWNLOADING:
      progressDialog = new ProgressDialog(this);
      progressDialog.setMessage(getString(R.string.loading_words));
      progressDialog.setCancelable(false);
      return progressDialog;

    }
    return null;
  }

  private void download() {
    if (!Langleo.isConnectionAvailable(this))
      return;
    Intent intent = new Intent();
    intent.putExtra("name", stackName);
    int len = words.size();
    intent.putExtra("words", len);
    for (int i = 0; i < len; i++)
      intent.putExtra("word_" + i, words.get(i).toBundle());
    setResult(RESULT_OK, intent);
    finish();
  }

  private String getStudyStackURL(int stackId) {
    return "http://www.studystack.com/servlet/simpledelim?studyStackId="
        + stackId + "&delimiter=%7C";
  }

  private Word getWordFromLine(String line) {
    String parts[] = line.split("\\|");
    if (parts.length != 2) {
      return null;
    }
    Word result = new Word();
    if (switchOrder) {
      result.setWord(parts[0].trim());
      result.setTranslation(parts[1].trim());
    } else {
      result.setWord(parts[1].trim());
      result.setTranslation(parts[0].trim());
    }
    return result;
  }

  private void loadStack() {
    new LoadStackTask().execute(stackId);
  }

  private ArrayList<Word> loadWordsFromString(String content) {
    words = new ArrayList<Word>();
    String lines[];
    int len;
    Word stackData;
    lines = content.split("\n");
    len = lines.length;
    for (int i = 0; i < len; i++) {
      String line = lines[i].trim();
      stackData = getWordFromLine(line);
      if (stackData != null)
        words.add(stackData);
    }

    return words;
  }

  private void updateExample() {
    ArrayList<HashMap<String, String>> hash = new ArrayList<HashMap<String, String>>();
    int len = words.size();
    HashMap<String, String> h;
    for (int i = 0; i < len; i++) {
      h = new HashMap<String, String>();
      h.put("word", words.get(i).getWord());
      h.put("translation", words.get(i).getTranslation());
      hash.add(h);
    }
    SimpleAdapter adapter = new SimpleAdapter(StackDetails.this, hash,
        R.layout.stack_details_item, new String[] { "word",
            "translation" }, new int[] {
            R.id.stack_details_item_word,
            R.id.stack_details_item_translation });
    setListAdapter(adapter);
  }

  private class LoadStackTask extends
      BetterAsyncTask<Integer, Void, ArrayList<Word>> {

    @Override
    protected void onPreExecute() {
      showDialog(DIALOG_DOWNLOADING);
    }

    @Override
    protected void onPostExecute(ArrayList<Word> result) {
      TextView tv = (TextView) findViewById(R.id.stack_details_words);
      tv.setText(words.size() + " " + getString(R.string.words));

      updateExample();
      removeDialog(DIALOG_DOWNLOADING);
    }

    @Override
    protected ArrayList<Word> doInBackground(Integer... params) {
      char input[] = new char[Download.BLOCK_SIZE];
      InputStream in = Download
          .openHttpConnection(getStudyStackURL(stackId));

      InputStreamReader reader = new InputStreamReader(in, Charset
          .forName("ISO-8859-1"));

      int read = -1;
      content = "";
      while (true) {
        try {
          read = reader.read(input);
        } catch (IOException e) {
          e.printStackTrace();
        }
        if (read == -1)
          break;

        content += new String(input).substring(0, read);

      }

      return loadWordsFromString(content);
    }

  }
}

Java Source Code List

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