Add Gallery images dynamically in android

Question

I\'ve done Gallery of images displayed on emulator by static(i.e images from drawable folder).Now i need to add some images into the list of gallery, dynamically fr

Answer 1

In your case, you can try make your image array a dynamic list, ex: ArrayList. Upon the arrival of new item, add it to the list, and call notifyDataSetChanged() (method of the adapter), and your gallery list will be refreshed.

Depends on your case, I found that it is better to use AsyncTask here to update the list, and call notifyDataSetChanged.

The adapter class would looks similarly to this

public class AddImgAdp extends BaseAdapter {
    int GalItemBg;
    ArrayList bitmapList;
    private Context cont;

    public AddImgAdp(Context c, ArrayList bitmapList) {
        cont = c;
        TypedArray typArray = obtainStyledAttributes(R.styleable.GalleryTheme);
        GalItemBg = typArray.getResourceId(R.styleable.GalleryTheme_android_galleryItemBackground, 0);
        typArray.recycle();
        this.bitmapList = bitmapList;
    }

    public int getCount() {
        return bitmapList.size();
    }

    public Object getItem(int position) {
        return bitmapList.get(position);
    }

    public long getItemId(int position) {
        return bitmapList.get(position);
    }

    public View getView(int position, View convertView, ViewGroup parent) {
        ImageView imgView = new ImageView(cont);

        // imgView.setImageResource(Imgid[position]);
        imgView.setImageBitmap(bitmapList.get(position));

        imgView.setLayoutParams(new Gallery.LayoutParams(80, 70));
        imgView.setScaleType(ImageView.ScaleType.FIT_XY);
        imgView.setBackgroundResource(GalItemBg);

        return imgView;
    }
}

Let me know if any errors, I am way to depending on IDE.