Program: 40695
Project: 40695
Buggy source:
@Override public Object instantiateItem(ViewGroup container,int position){
  inflater=(LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
  View viewLayout=inflater.inflate(R.layout.layout_fullscreen_image,container,false);
  mImgDisplay=(PhotoView)viewLayout.findViewById(R.id.imgDisplay);
  mAttacher=new PhotoViewAttacher(mImgDisplay);
  final android.support.v7.widget.Toolbar galleryImage;
  galleryImage=(android.support.v7.widget.Toolbar)viewLayout.findViewById(R.id.gallery_image_container);
  mAttacher.setOnViewTapListener(new PhotoViewAttacher.OnViewTapListener(){
    @Override public void onViewTap(    View view,    float x,    float y){
      Log.v(TAG,"String_Node_Str");
      if (galleryImage.getVisibility() == View.INVISIBLE) {
        galleryImage.setVisibility(View.VISIBLE);
      }
 else {
        galleryImage.setVisibility(View.INVISIBLE);
      }
    }
  }
);
  GalleryItem g=photoObjects.get(position);
  String photoUrl=g.getUrl() + "String_Node_Str";
  TextView itemName=(TextView)viewLayout.findViewById(R.id.gallery_item_name);
  TextView makerName=(TextView)viewLayout.findViewById(R.id.gallery_maker_name);
  itemName.setText(g.getItemName());
  makerName.setText("String_Node_Str" + g.getMakerName());
  Log.v(TAG,g.getItemName() + "String_Node_Str" + photoUrl+ "String_Node_Str"+ g.getMakerName());
  Picasso.with(activity).load(photoUrl).placeholder(R.drawable.progress_view_large).error(R.drawable.progress_view_large).into(mImgDisplay,new com.squareup.picasso.Callback(){
    @Override public void onSuccess(){
      Log.v(TAG,"String_Node_Str");
      if (mAttacher != null) {
        Log.v(TAG,"String_Node_Str");
        mAttacher.update();
      }
 else {
        Log.v(TAG,"String_Node_Str");
        mAttacher=new PhotoViewAttacher(mImgDisplay);
        mAttacher.setOnViewTapListener(new PhotoViewAttacher.OnViewTapListener(){
          @Override public void onViewTap(          View view,          float x,          float y){
            Log.v(TAG,"String_Node_Str");
            if (galleryImage.getVisibility() == View.INVISIBLE) {
              galleryImage.setVisibility(View.VISIBLE);
            }
 else {
              galleryImage.setVisibility(View.INVISIBLE);
            }
          }
        }
);
        Log.v(TAG,"String_Node_Str");
      }
    }
    @Override public void onError(){
      Log.v(TAG,"String_Node_Str");
    }
  }
);
  ((ViewPager)container).addView(viewLayout);
  return viewLayout;
}

Fixed version (ground truth):
@Override public Object instantiateItem(ViewGroup container,int position){
  inflater=(LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
  View viewLayout=inflater.inflate(R.layout.layout_fullscreen_image,container,false);
  final PhotoView mImgDisplay=(PhotoView)viewLayout.findViewById(R.id.imgDisplay);
  final android.support.v7.widget.Toolbar galleryCaption=(android.support.v7.widget.Toolbar)viewLayout.findViewById(R.id.gallery_caption_container);
  GalleryItem g=photoObjects.get(position);
  String photoUrl=g.getUrl() + "String_Node_Str";
  TextView itemName=(TextView)viewLayout.findViewById(R.id.gallery_item_name);
  TextView makerName=(TextView)viewLayout.findViewById(R.id.gallery_maker_name);
  itemName.setText(g.getItemName());
  makerName.setText("String_Node_Str" + g.getMakerName());
  Log.v(TAG,g.getItemName() + "String_Node_Str" + photoUrl+ "String_Node_Str"+ g.getMakerName());
  Picasso.with(activity).load(photoUrl).placeholder(R.drawable.progress_view_large).error(R.drawable.progress_view_large).into(mImgDisplay,new com.squareup.picasso.Callback(){
    @Override public void onSuccess(){
      Log.v(TAG,"String_Node_Str");
      mAttacher=new PhotoViewAttacher(mImgDisplay);
      mAttacher.setOnViewTapListener(new PhotoViewAttacher.OnViewTapListener(){
        @Override public void onViewTap(        View view,        float x,        float y){
          Log.v(TAG,"String_Node_Str");
          if (galleryCaption.getVisibility() == View.INVISIBLE) {
            galleryCaption.setVisibility(View.VISIBLE);
          }
 else {
            galleryCaption.setVisibility(View.INVISIBLE);
          }
        }
      }
);
      Log.v(TAG,"String_Node_Str");
    }
    @Override public void onError(){
      Log.v(TAG,"String_Node_Str");
    }
  }
);
  ((ViewPager)container).addView(viewLayout);
  return viewLayout;
}