Android: Setting a button size programatically -

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i'm trying make 100x100 px button , add gridlayout on position 3,3

button btn = new button(this); btn.setlayoutparams(new viewgroup.layoutparams(100,100)); gridlayout grid4x4 = (gridlayout)findviewbyid(r.id.grid4x4);  //i've narrowed down conclusion line problem: grid4x4.addview(btn,new gridlayout.layoutparams(gridlayout.spec(3),gridlayout.spec(3))); //if use: //grid4x4.addview(btn); button size want it, need on  //the 3,3 position of grid.

this "almost" works, excepting fact button added bigger 100x100px can see i'm trying fix size want yet reason that's not size get.

in res/values/dimens.xml add <dimen name="mybuttonsize">100px</dimen>

int size = (int) getresources().getdimension(r.dimen.mybuttonsize);

change code to:

btn.setmaxwidth(size); btn.setmaxheight(size); btn.setlayoutparams(new viewgroup.layoutparams(size,size));

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