android - UIL, Picasso - Images in adapter always reload when stop scrolling -


i have listview text , large image internet. image item has fit width , wrap_content height.
tried display image in background uil & picasso. both of them can work image reloads when stop scrolling, , makes listview flickering
looks this:

enter image description here

you can see it reload downloaded , cached images when stop scrolling (i scroll down , scroll up).
how can prevent happen?

 <imageview android:id="@+id/imgfeed"                 android:layout_width="match_parent"                 android:layout_height="wrap_content"                 android:scaletype="centercrop"/>   // uil  options = new displayimageoptions.builder()  .showimageonloading(defaultimage)  .showimageonfail(defaultimage)  .showimageforemptyuri(defaultimage)  .resetviewbeforeloading(false)  .cacheondisk(true).delaybeforeloading(0)  .displayer(new  fadeinbitmapdisplayer(200)).cacheinmemory(true).imagescaletype(imagescaletype.exactly_stretched).build();   imageaware imageaware = new imageviewaware(viewholder.imgfeed, false);   imageloader.getinstance().displayimage(item.getphotourl(), imageaware, options);  // picasso  picasso.with(getcontext())                         .load(item.getphotourl())                         .placeholder(r.drawable.place_holder_big)                         .resize(screenwidth, 0) //set max width                         .into(viewholder.imgfeed);

for uil, tried many ways in this issue don't work me @ all.

update: seems faced memory cache issue this question. how can fix issue? @ facebook app, did well. images have different sizes fit width, , smooth scrolling without reloading images. how can that?

if you're wondering how facebook did it, released image loading library (https://github.com/facebook/fresco)

is possible calling notifydatasetchanged on underlying listview @ time? using hasstableids()?

for uil try using weakmemorycache (refer https://github.com/nostra13/android-universal-image-loader/wiki/useful-info) that'll theoretically allow make use of available memory though may cause lot of gc calls.

for picasso taha's method looks best bet!


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