How to Use bitmap recycle in android?

Question

I am having an issue with bitmap recycle. I am displaying the bitmaps in a pulltorefreshlistview. I have about 30-50 Images to download alongwith some text from webservice function. I am using lazyloading of images and downloading Images and decoding them to 80x80 size. My Issue is that I am getting OutOfmemoryError. So I done some R and D and know that bitmaps were not GC'd immediately. So I want to do recycle() the bitmaps for reclaiming the memory. where to call recycle() on bitmaps. I am using famous lazylist. in this below code after setting bitmap, i tried to do bitmap.recycle(). I haven't got any error like other reported on stackoverflow but strange thing is listitems are shown blank. I wonder that if I recycle() bitmap why the textviews, in the same row are effected. As there are big number of images my app crashing very soon. I would also like to ask how to recycle all the images set in Listview at a time. please some one help me.

//Used to display bitmap in the UI thread
    class BitmapDisplayer implements Runnable
    {
        Bitmap bitmap;
        PhotoToLoad photoToLoad;
        public BitmapDisplayer(Bitmap b, PhotoToLoad p){bitmap=b;photoToLoad=p;}
        public void run()
        {
            if(imageViewReused(photoToLoad))
                return;
            if(bitmap!=null)
                photoToLoad.imageView.setImageBitmap(bitmap);
            else
                photoToLoad.imageView.setImageResource(stub_id);
        }
    }

score 0 · Answer 1 · answered Nov 06 '12 at 19:28

We use this library: Android HttpImageManager

It's easy to use with lists and I've never got a OutOfMemoryException using it. It caches the bitmap in memory and also in filesystem (you can change that behavior).

Also I would recommend you to not resize bitmaps on phone, but do it remotely on server if you can (of course you might not have that option).

How to Use bitmap recycle in android?

1 Answers1