android - Dynamically added items in LinearLayout margin -

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i have code add checkboxes array linearlayout.

linearlayout my_layout = (linearlayout) findviewbyid(r.id.test); (int n = 0; n < listitems.size(); n++) {   checkbox cb = new checkbox(getapplicationcontext());   cb.setid(integer.parseint(listitems.get(n).get("cbid")));   cb.settext(listitems.get(n).get("product"));   cb.settextcolor(color.black);   my_layout.addview(cb); }

how can make sure between each checkbox there margin of 2-3dp? , background of checkboxes has rounded edges?

this xml set boxes in

<linearlayout         android:id="@+id/parent"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:orientation="horizontal" >          <linearlayout             android:id="@+id/test"             android:layout_width="260dp"             android:layout_height="wrap_content"             android:orientation="vertical"             android:paddingleft="10dp" />          <linearlayout             android:id="@+id/settings"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:orientation="vertical"             android:background="#13ca8c"             />     </linearlayout> 

linearlayout my_layout = (linearlayout) findviewbyid(r.id.test); (int n = 0; n < listitems.size(); n++) {     checkbox cb = new checkbox(getapplicationcontext());     cb.setid(integer.parseint(listitems.get(n).get("cbid")));     cb.settext(listitems.get(n).get("product"));     cb.settextcolor(color.black);     linearlayout.layoutparams params = new linearlayout.layoutparams(viewgroup.layoutparams.match_parent,    viewgroup.layoutparams.wrap_content);     parms.leftmargin = 2;     params.rightmargin = 2;     params.topmargin = 2;     params.bottommargin = 2;     my_layout.addview(cb,params); }

and rounded corners use background image


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