Android GridView and ListView inside a ScrollView

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http://stackoverflow.com – I have made a gridview and listview inside a LinearLayout. data that display is dynamic . gridview fill the 80% of the screen height.and listview have only 20% of screen height and in it items are scrollable but due to availability of screen height listview display only 2 items at a time.. now i want parent of listview and gridview is scrollable but gridview and listview are not so that list view can show more than 2 items at a time. (HowTos)