Android Open Source - SimpleReader Grid Adapter

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From Project

Back to project page SimpleReader.

License

The source code is released under:

Apache License

Java Source Code

package com.dreamteam.app.adapter;
//from   w  ww  .  j a v  a 2  s  . co  m
import java.util.ArrayList;

import android.content.Context;
import android.content.Intent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import com.dreamteam.app.commons.AppContext;
import com.dreamteam.app.commons.SectionHelper;
import com.dreamteam.app.db.DbManager;
import com.dreamteam.app.db.FeedDBManager;
import com.dreamteam.app.entity.Section;
import com.dreamteam.app.ui.MainActivity;
import com.dreamteam.app.utils.FileUtils;
import com.dreateam.app.ui.R;

public class GridAdapter extends BaseAdapter
{
  private Context context;
  private ArrayList<Section> sections;
  //deleteButton?????????
  private int isVisible = 0;//deleteButton?????????
  private int[] visibleStates = {View.GONE,View.VISIBLE};
  public static final String ACTION_INSTALL_SHORTCUT = "com.android.launcher.action.INSTALL_SHORTCUT";
  public static final String ACTION_ENTER_BY_SHORTCUT = "com.dreateam.action.ENTER_BY_SHORTCUT";
  
  public GridAdapter(Context context, ArrayList<Section> sections)
  {
    this.context = context;
    this.sections = sections;
  }
  
  
  @Override
  public int getCount()
  {
    return sections.size();
  }

  @Override
  public Object getItem(int postion)
  {
    return sections.get(postion);
  }

  @Override
  public long getItemId(int id)
  {
    return id;
  }

  @Override
  public View getView(final int position, View convertView, ViewGroup parent)
  {
    ViewHolder holder = null;
    
    if(convertView == null)
    {
      LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
      convertView = inflater.inflate(R.layout.section_item, null);
      holder = new ViewHolder();
      holder.itemTitle = (TextView) convertView.findViewById(R.id.item_text);
      holder.delteBtn = (ImageView) convertView.findViewById(R.id.item_btn_delete);
      holder.addLauncherBtn = (ImageView) convertView.findViewById(R.id.item_btn_add_launcher);
      convertView.setTag(holder);
    }
    else
    {
      holder = (ViewHolder) convertView.getTag();
    }
    
    
    final Section section = sections.get(position);
    if(section != null)
    {
      holder.itemTitle.setText(section.getTitle());
    }
    holder.delteBtn.setOnClickListener(new OnClickListener()
    {
      @Override
      public void onClick(View v)
      {
        final String url = section.getUrl();
        final String tableName = section.getTableName();
        //?????section
        Intent intent = new Intent();
        intent.setAction(MainActivity.ACTION_DELETE_SECTION);
        intent.putExtra("url", url);
        context.sendBroadcast(intent);
        new Thread()
        {
          public void run()
          {
            //???????????
            DbManager mgr = new DbManager(context,
                DbManager.DB_NAME, null, 1);
            SectionHelper.removeRecord(mgr.getWritableDatabase(),
                url);
            //???????feed.db????
            new FeedDBManager(context, FeedDBManager.DB_NAME, null,
                1).updateState(tableName, 0, url);
            //????
            FileUtils.deleteDirectory(AppContext.getSectionCache(
                url).getAbsolutePath());
          }
        }.start();
      }
    });
    holder.delteBtn.setVisibility(visibleStates[isVisible]);
    holder.addLauncherBtn.setOnClickListener(new OnClickListener()
    {
      @Override
      public void onClick(View v)
      {
        addShortcut(section.getTitle(), section.getUrl());
      }
    });
    holder.addLauncherBtn.setVisibility(visibleStates[isVisible]);
    return convertView;
  }
  
  private static final class ViewHolder
  {
    TextView itemTitle;
    ImageView delteBtn;
    ImageView addLauncherBtn;
  }
  
  public void addItem(Section section)
  {
    sections.add(section);
    notifyDataSetChanged();
  }

  public boolean removeItem(String url)
  {
    for(int i = 0; i < sections.size(); i++)
    {
      Section s = sections.get(i);
      if(s.getUrl().equals(url))
      {
        sections.remove(i);
        notifyDataSetChanged();
        return true;
      }
    }
    return false;
  }
  
  //????????????
  private void addShortcut(String name, String sectionUrl)
  {
    Intent entryIntent = new Intent();
    entryIntent.setAction(ACTION_ENTER_BY_SHORTCUT);
    entryIntent.setClass(context, MainActivity.class);
    entryIntent.putExtra("section_title", name);
    entryIntent.putExtra("url", sectionUrl);
    entryIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    
    
    Intent shortcutIntent = new Intent("com.android.launcher.action.INSTALL_SHORTCUT");
    shortcutIntent.putExtra(Intent.EXTRA_SHORTCUT_NAME, name);
    shortcutIntent.putExtra(Intent.EXTRA_SHORTCUT_INTENT, entryIntent);
    shortcutIntent.putExtra(Intent.EXTRA_SHORTCUT_ICON, R.drawable.ic_launcher);
    //????????
    shortcutIntent.putExtra("duplicate", false);
    context.sendBroadcast(shortcutIntent);
  }

  /**
   * @param 0:???????
   */
  public void changeDelBtnState(int isVisble)
  {
    this.isVisible = isVisble;
    notifyDataSetChanged();
  }
  
  public boolean isEmpty()
  {
    return sections.isEmpty();
  }

  public Section getLastItem()
  {
    return sections.get(sections.size() - 1);
  }

  public boolean isFull()
  {
    return sections.size() >= MainActivity.PAGE_SECTION_SIZE;
  }
}

Java Source Code List

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