android - Linear layout children not scrolling -

i'm trying add image views linear layout @ runtime.

<linearlayout     android:id="@+id/llfolderlayout"     android:layout_width="match_parent"     android:layout_height="0dp"     android:layout_weight=".65"     android:orientation="horizontal"     android:scrollbars="horizontal" > </linearlayout> 

linearlayout llfoldertabs = (linearlayout) myfolder.findviewbyid(r.id.llfolderlayout); imageview imgtab = new imageview(activity); imgtab.setid(i); imgtab.settag(i); imgtab.setimagedrawable(     mcontext.getresources().getdrawable(r.drawable.icon_folder_inactive)); if (i == 0) {     imgtab.setimagedrawable(         mcontext.getresources().getdrawable(r.drawable.icon_folder_active));     // imgtab.setpadding(10, 0, 4, 0);     linearlayout.layoutparams lp = new linearlayout.layoutparams(         74, layoutparams.match_parent);     lp.setmargins(15, 0, 0, 0);     imgtab.setlayoutparams(lp); } else {     // imgtab.setpadding(4, 0, 4, 0);     linearlayout.layoutparams lp = new linearlayout.layoutparams(         74, layoutparams.match_parent);     lp.setmargins(30, 0, 0, 0);     imgtab.setlayoutparams(lp); } llfoldertabs.addview(imgtab); 

however, when number of children exceeds screen size doesn't scroll horizontally - how can achieve effect?

scrollview special kind of layout, designed hold view larger actual size. when views size goes beyond scrollview size, automatically adds scroll bars , can scrolled vertically.

<scrollview xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="fill_parent"     android:layout_height="wrap_content"     android:orientation="vertical"     android:padding="10dp"     android:fillviewport="false">      <linearlayout         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:orientation="vertical">    </linearlayout> </scrollview> 

http://javatechig.com/android/android-scrollview-example

http://www.androidhub4you.com/2012/09/horizontal-scroll-view-in-android.html