bitmap - Android Gallery Loading a lot of images from local makes scroll not smooth -

bitmap - Android Gallery Loading a lot of images from local makes scroll not smooth -

i using android gallery widget loading images bitmap[] succesfully, seemms scroll not smooth. initial conditions:

image resources comes local array of bitmap (previously total filled) if load 3 images, seems going smoother the size of each individual item lite weighted bitmap (less 30kb) the dimensions of each individual item 200x350 px

what optimize ?

thx in advance!!

android bitmap scroll gallery smooth