Android Open Source - listmyaps Tag Selection Listener

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License

The source code is released under:

Apache License

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Java Source Code

package de.onyxbits.listmyapps;
/* www.j  a  v a 2  s.  co m*/
import java.util.Arrays;
import java.util.Vector;

import android.content.DialogInterface;
import android.widget.ListAdapter;

/**
 * Utility class for selecting apps by tag.
 * 
 * @author patrick
 * 
 */
public class TagSelectionListener implements
    DialogInterface.OnMultiChoiceClickListener, DialogInterface.OnClickListener {

  private ListAdapter adapter;
  private String[] items;
  private boolean[] states;

  /**
   * 
   * @param adapter
   *          The listadapter (containing the list of apps) to control.
   */
  public TagSelectionListener(ListAdapter adapter) {
    this.adapter = adapter;
    int count = adapter.getCount();
    Vector<String> collect = new Vector<String>();
    for (int i = 0; i < count; i++) {
      SortablePackageInfo spi = (SortablePackageInfo) adapter.getItem(i);
      String[] tags = MainActivity.noNull(spi.tags).split(",");
      for (String tag : tags) {
        String tmp = tag.trim();
        if (tmp.length() > 0 && !collect.contains(tmp)) {
          collect.add(tmp);
        }
      }
    }
    items = collect.toArray(new String[0]);
    states = new boolean[items.length];
    Arrays.sort(items);
  }

  /**
   * Extract the tags from the apps in the provided adapter.
   * 
   * @return
   */
  protected String[] listTags() {
    return items;
  }

  @Override
  public void onClick(DialogInterface dialog, int which) {
    if (which == DialogInterface.BUTTON_POSITIVE) {
      int count = adapter.getCount();
      for (int i = 0; i < count; i++) {
        SortablePackageInfo spi = (SortablePackageInfo) adapter.getItem(i);
        spi.selected = false;
        for (int a = 0; a < items.length; a++) {
          if (states[a] && MainActivity.noNull(spi.tags).contains(items[a])) {
            spi.selected=true;
            break;
          }
        }
      }
      ((AppAdapter) adapter).notifyDataSetChanged();
    }
  }

  @Override
  public void onClick(DialogInterface dialog, int which, boolean isChecked) {
    states[which] = isChecked;
  }

}

Java Source Code List