Android ImageButton with LayerDrawable Image -

i'm trying display layerdrawable imagebutton image. layers must have different top values. such top += 10;. used setlayerinset drawable layer items stretched images. tried different parameters , displayed other stupid layouts.

after setlayerinset attempt used insetdrawable, giving top parameter own constructor:

new insetdrawable(resources.getdrawable(r.drawable.soldier), 0, layertop, 0, 0); 

this time, tops ok, imagebutton displays small area of it.

basic layout, let image,

 *---* |   | |   |  --- 

the layout should be,

 *---* |   | *---* |   | *---* |   | *---* |   | |   |  --- 

i set android:scaletype="fitstart" , changed line below , working charm.

new insetdrawable(resources.getdrawable(r.drawable.soldier), 0, layertop,0,-layertop); 

now have more questions,

first, can see creating new instance every layers. if create 1 drawable object , set every items of array used creating layerdrawable , use layerdrawable.setlayerinset function set top , bottom properties, more efficient.

and other 1 if layerdrawable object has more items bigger imagebutton still displays images. there setting such css overflow:hidden or something?

thanks.