Android Open Source - android-export-bookmarks Main Activity

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License

The source code is released under:

MIT License

Java Source Code

package com.example.exportbookmarks;
//  w ww .  ja va  2s. c o m
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import android.app.Activity;
import android.content.Context;
import android.database.Cursor;
import android.os.Bundle;
import android.os.Environment;
import android.provider.Browser;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

/**
 * Export Android Browser bookmarks to a text file on sdcard.
 * 
 * @author victor
 * 
 */
public class MainActivity extends Activity {

  private static final String LOG_TAG = null;
  private static final String BOOKMARK_FILENAME = "bookmarks.txt";

  ListView bookmarkList;

  ArrayList<String> bookmarks = new ArrayList<String>();

  private View exportButton;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    makeBookmarkList();

    exportButton = findViewById(R.id.exportButton);
    exportButton.setOnClickListener(new OnClickListener() {

      @Override
      public void onClick(View v) {

        // concatenate all url into one giant string and save to file
        StringBuffer buffer = new StringBuffer();
        for (String url : bookmarks)
          buffer.append(url + "\n");

        writeTextToFile(BOOKMARK_FILENAME, buffer.toString());
      }
    });

  }

  /**
   * Fetch all bookmarks from Browser app and show to the user in list format.
   * 
   */
  private void makeBookmarkList() {

    getBrowserBookmarks(bookmarks);

    // populate the list adapter with bookmarks
    bookmarkList = (ListView) findViewById(R.id.bookmarkList);

    final ArrayList<String> list = new ArrayList<String>();
    for (int i = 0; i < bookmarks.size(); ++i)
      list.add(bookmarks.get(i));

    final BookmarkListAdapter adapter = new BookmarkListAdapter(this,
        android.R.layout.simple_list_item_1, list);
    bookmarkList.setAdapter(adapter);

    // do nothing in the onClick() :)
    bookmarkList
        .setOnItemClickListener(new AdapterView.OnItemClickListener() {

          @Override
          public void onItemClick(AdapterView<?> parent,
              final View view, int position, long id) {
            // final String item = (String)
            // parent.getItemAtPosition(position);
          }

        });

    // display total number of bookmarks
    TextView infoText = (TextView) findViewById(R.id.info_text);
    infoText.setText("" + bookmarks.size() + " bookmarks.");
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
  }

  /**
   * Query Android Browser app for the user bookmarks.
   * <p>
   * 
   * @param bookmarks
   */
  private void getBrowserBookmarks(ArrayList<String> bookmarks) {

    String[] requestedColumns = { Browser.BookmarkColumns.TITLE,
        Browser.BookmarkColumns.URL };
    Cursor resultSet = managedQuery(Browser.BOOKMARKS_URI,
        requestedColumns, Browser.BookmarkColumns.BOOKMARK + "=1",
        null, null);

    Log.d(LOG_TAG, "Bookmarks count: " + resultSet.getCount());

    // don't care about titles, only URLs!
    // int title = resultSet.getColumnIndex(Browser.BookmarkColumns.TITLE);
    int url = resultSet.getColumnIndex(Browser.BookmarkColumns.URL);

    resultSet.moveToFirst();
    while (!resultSet.isAfterLast()) {
      if (resultSet.getString(url) != null)
        bookmarks.add(resultSet.getString(url));
      resultSet.moveToNext();
    }
  }

  private class BookmarkListAdapter extends ArrayAdapter<String> {

    HashMap<String, Integer> hashMap = new HashMap<String, Integer>();

    public BookmarkListAdapter(Context context, int textViewResourceId,
        List<String> objects) {
      super(context, textViewResourceId, objects);
      for (int i = 0; i < objects.size(); ++i) {
        System.err.println("" + i + ":" + objects.get(i));
        if (objects.get(i) != null)
          hashMap.put(objects.get(i), i);
      }
    }

    @Override
    public long getItemId(int position) {
      String item = getItem(position);
      return hashMap.get(item);
    }

    @Override
    public boolean hasStableIds() {
      return true;
    }

    @Override
    public int getCount() {
      return hashMap.size();
    }
  }

  /**
   * Create a specified text file.
   * <p>
   * 
   * @param fileName
   * @param text
   */
  private void writeTextToFile(String fileName, String text) {

    // "sdcard" present?
    if (!Environment.getExternalStorageState().equals(
        Environment.MEDIA_MOUNTED)) {
      String msg = "No SD card present.";
      Log.d(LOG_TAG, msg);
      Toast.makeText(this, msg, Toast.LENGTH_SHORT).show();
      return;
    }

    try {
      File root = new File(Environment.getExternalStorageDirectory(), "");
      if (!root.exists()) {
        root.mkdirs();
      }

      FileWriter writer = new FileWriter(new File(root, fileName));
      writer.append(text);
      writer.flush();
      writer.close();

      Toast.makeText(this, "Bookmars saved to " + root + "/" + fileName,
          Toast.LENGTH_SHORT).show();

    } catch (IOException e) {
      e.printStackTrace();
      Toast.makeText(this, "Unable to save bookmarks!",
          Toast.LENGTH_SHORT).show();
    }

  }
}

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