Android Open Source - photo-picker-plus-android Base Cursor Adapter

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License

The source code is released under:
MIT License
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Java Source Code

/**
 * The MIT License (MIT)//from www .  j  av  a2  s  .c o  m

Copyright (c) 2013 Chute

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
package com.getchute.android.photopickerplus.ui.adapter;

import android.annotation.SuppressLint;
import android.content.Context;
import android.database.Cursor;
import android.support.v4.widget.CursorAdapter;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.AbsListView.OnScrollListener;
import android.widget.ImageView;

import com.getchute.android.photopickerplus.R;

import java.util.HashMap;
import java.util.Map;


public abstract class BaseCursorAdapter extends CursorAdapter implements
    OnScrollListener {

  private static LayoutInflater inflater = null;
  protected int dataIndex;
  public Map<Integer, String> tick = new HashMap<Integer, String>();
  protected boolean shouldLoadImages = true;

  @SuppressLint("NewApi")
  public BaseCursorAdapter(Context context, Cursor c) {
    super(context, c, 0);
    inflater = (LayoutInflater) context
        .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    dataIndex = getDataIndex(c);

  }

  public abstract int getDataIndex(Cursor cursor);

  abstract public void setViewClickListener(View view, String path,
      int position);

  abstract public void setPlayButtonVisibility(ImageView imageView);

  abstract public void loadImageView(ImageView imageView, Cursor cursor);

  @Override
  public String getItem(int position) {
    final Cursor cursor = getCursor();
    cursor.moveToPosition(position);
    return cursor.getString(dataIndex);
  }

  public static class ViewHolder {

    public ImageView imageViewThumb;
    public ImageView imageViewTick;
    public ImageView imageViewVideo;
    public View viewSelect;
  }

  @Override
  public View newView(Context context, Cursor cursor, ViewGroup parent) {
    ViewHolder holder;
    View vi = inflater.inflate(R.layout.gc_adapter_assets_grid, null);
    holder = new ViewHolder();
    holder.imageViewThumb = (ImageView) vi
        .findViewById(R.id.gcImageViewThumb);
    holder.imageViewTick = (ImageView) vi
        .findViewById(R.id.gcImageViewTick);
    holder.imageViewVideo = (ImageView) vi
        .findViewById(R.id.gcImageViewVideo);
    holder.viewSelect = vi.findViewById(R.id.gcViewSelect);
    vi.setTag(holder);
    return vi;
  }

  @Override
  public void onScroll(AbsListView view, int firstVisibleItem,
      int visibleItemCount, int totalItemCount) {
    // TODO Auto-generated method stub

  }

  @Override
  public void onScrollStateChanged(AbsListView view, int scrollState) {
    switch (scrollState) {
    case OnScrollListener.SCROLL_STATE_FLING:
    case OnScrollListener.SCROLL_STATE_TOUCH_SCROLL:
      shouldLoadImages = false;
      break;
    case OnScrollListener.SCROLL_STATE_IDLE:
      shouldLoadImages = true;
      notifyDataSetChanged();
      break;
    }

  }

  @Override
  public void changeCursor(Cursor cursor) {
    super.changeCursor(cursor);
    dataIndex = getDataIndex(cursor);

  }

  @Override
  public void bindView(View view, Context context, Cursor cursor) {
    ViewHolder holder = (ViewHolder) view.getTag();
    String path = cursor.getString(dataIndex);
    holder.imageViewTick.setTag(path);
    if (shouldLoadImages) {
      loadImageView(holder.imageViewThumb, cursor);
    }
    if (tick.containsKey(cursor.getPosition())) {
      holder.imageViewTick.setVisibility(View.VISIBLE);
      holder.viewSelect.setVisibility(View.VISIBLE);
      view.setBackgroundColor(context.getResources().getColor(
          R.color.sky_blue));
    } else {
      holder.imageViewTick.setVisibility(View.GONE);
      holder.viewSelect.setVisibility(View.GONE);
      view.setBackgroundColor(context.getResources().getColor(
          R.color.gray_light));
    }
    holder.imageViewVideo.setVisibility(View.VISIBLE);
    setViewClickListener(view, path, cursor.getPosition());
    setPlayButtonVisibility(holder.imageViewVideo);

  }

}
Java Source Code List
