Android Open Source - Android-Mutiple-Select-Gallery Photo Adapter

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License

The source code is released under:

MIT License

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Java Source Code

package com.pgk.venusgallery.adapter;
//w  w  w .  j  a  v  a 2s.c om
import java.util.List;

import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.ProgressBar;

import com.pgk.venusgallery.R;
import com.pgk.venusgallery.models.VGPhoto;
import com.pgk.venusgallery.utils.VGSquareImageView;

public class PhotoAdapter extends BaseAdapter {
  
  Context mContext;
  List<VGPhoto> mData;
  LayoutInflater mlayoutInflator;
  
  public PhotoAdapter(Context context, List<VGPhoto> data)  {
    super();
    mContext = context;
    mData = data;
    mlayoutInflator = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
  }
  
  @SuppressLint("InflateParams")
  @Override
  public View getView(int position, View convertView, ViewGroup parent) {

    if (convertView == null) {
      convertView = mlayoutInflator.inflate(R.layout.item_photo, null);
    } 
    
    VGPhoto       photo     = mData.get(position);
    VGSquareImageView   previewImage;
    ProgressBar     progressBar;
    CheckBox      selectCheckbox;
    
    previewImage   = (VGSquareImageView)convertView.findViewById(R.id.previewImage);
    progressBar    = (ProgressBar)convertView.findViewById(R.id.progressBar);
    selectCheckbox   = (CheckBox)convertView.findViewById(R.id.selectCheckbox);

    selectCheckbox.setVisibility(View.GONE);
    previewImage.setVisibility(View.GONE);

    new ImageLoadTask(previewImage, selectCheckbox, photo, progressBar).execute();
    
    selectCheckbox.setChecked(photo.isSelected());
    
    return convertView;
  }

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

  @Override
  public Object getItem(int arg0) {
    return null;
  }

  @Override
  public long getItemId(int position) {
    return 0;
  }
  
    private class ImageLoadTask extends AsyncTask<String, String, Bitmap> {
 
      private ImageView image;
      private ProgressBar progressBar;
      private VGPhoto photo;
      private CheckBox cb;
      
      public ImageLoadTask(ImageView imv, CheckBox cb, VGPhoto photo, ProgressBar progressBar) {
             this.image = imv;
             this.cb = cb;
             this.progressBar = progressBar;
             this.photo = photo;
        }
      
        protected Bitmap doInBackground(String... param) {
          
          if (photo.getImageBitmap() == null) {
            
              BitmapFactory.Options options = new BitmapFactory.Options();
              options.inSampleSize = 12;

              Bitmap bitmap = BitmapFactory.decodeFile(photo.getFilepath(), options);
                return bitmap;            
          }
          
          return photo.getImageBitmap();
        }
 
        protected void onPostExecute(Bitmap ret) {
          
          if (photo.getImageBitmap() == null) {
            photo.setImageBitmap(ret);
          }
          
          image.setImageBitmap(ret);
          image.setVisibility(View.VISIBLE);
          cb.setVisibility(View.VISIBLE);
          progressBar.setVisibility(View.GONE);
        }
    }
}

Java Source Code List