Android Open Source - bv-android-sdk Photo Select Cursor Adapter

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License

The source code is released under:

Apache License

Java Source Code

package com.chute.android.photopickerplus.adapter;
//from  ww w . jav  a2 s .  c  om
import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;

import android.content.Context;
import android.database.Cursor;
import android.graphics.Color;
import android.net.Uri;
import android.provider.MediaStore;
import android.util.DisplayMetrics;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.AbsListView.OnScrollListener;
import android.widget.CursorAdapter;
import android.widget.ImageView;
import android.widget.ImageView.ScaleType;
import android.widget.RelativeLayout;

import com.chute.android.photopickerplus.R;
import com.darko.imagedownloader.ImageLoader;

public class PhotoSelectCursorAdapter extends CursorAdapter implements OnScrollListener {

    public static final String TAG = PhotoSelectCursorAdapter.class.getSimpleName();

    private static LayoutInflater inflater = null;
    public ImageLoader loader;
    private final int dataIndex;
    public HashMap<Integer, String> tick;
    private boolean shouldLoadImages = true;
    private final DisplayMetrics displayMetrics;

    public PhotoSelectCursorAdapter(Context context, Cursor c) {
  super(context, c);
  inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
  loader = ImageLoader.getLoader(context);
  dataIndex = c.getColumnIndex(MediaStore.Images.Media.DATA);
  displayMetrics = context.getResources().getDisplayMetrics();
  tick = new HashMap<Integer, String>();
    }

    public static class ViewHolder {
  public ImageView image;
  public ImageView tick;
    }

    @Override
    public void bindView(View view, Context context, Cursor cursor) {
  ViewHolder holder = (ViewHolder) view.getTag();
  String path = cursor.getString(dataIndex);
  holder.image.setTag(path);
  holder.tick.setTag(cursor.getPosition());
  if (shouldLoadImages) {
      loader.displayImage(Uri.fromFile(new File(path)).toString(), holder.image);
  } else {
      loader.displayImage(null, holder.image);
  }
  holder.image.setLayoutParams(new RelativeLayout.LayoutParams(
    displayMetrics.widthPixels / 3 - 2, displayMetrics.widthPixels / 3 - 2));
  holder.image.setScaleType(ScaleType.CENTER_CROP);
  if (tick.containsKey(cursor.getPosition())) {
      holder.tick.setVisibility(View.VISIBLE);
      view.setBackgroundColor(context.getResources().getColor(R.color.orange));
  } else {
      holder.tick.setVisibility(View.GONE);
      view.setBackgroundColor(Color.BLACK);
  }
    }

    @Override
    public View newView(Context context, Cursor cursor, ViewGroup parent) {
  ViewHolder holder;
  View vi = inflater.inflate(R.layout.photos_select_adapter, null);
  holder = new ViewHolder();
  holder.image = (ImageView) vi.findViewById(R.id.imageViewThumb);
  holder.tick = (ImageView) vi.findViewById(R.id.imageTick);
  vi.setTag(holder);
  return vi;
    }

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

    @Override
    public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount,
      int totalItemCount) {
  // Do nothing

    }

    @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;
  }
    }

    public ArrayList<String> getSelectedFilePaths() {
  final ArrayList<String> photos = new ArrayList<String>();
  final Iterator<String> iterator = tick.values().iterator();
  while (iterator.hasNext()) {
      photos.add(iterator.next());
  }
  return photos;
    }

    public boolean hasSelectedItems() {
  return tick.size() > 0;
    }

    public int getSelectedItemsCount() {
  return tick.size();
    }

    public void toggleTick(int position) {
  if (tick.containsKey(position)) {
      tick.remove(position);
  } else {
      tick.put(position, getItem(position));
  }
  notifyDataSetChanged();
    }
}

Java Source Code List

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