LinearLayout set background properties, change the background whenclicked Question

android: id = "@ + id / navi_second_page_item_yingyin"
android: layout_width = "fill_parent"
android: layout_height = "fill_parent"
android: layout_weight = "1.0"
android: background = "@ drawable / task_delete_selector_background"
android: orientation = "vertical"
android: paddingRight = "6.0dip"
android: state_focused = "false"
android: state_pressed = "false">

LinearLayout where I set android: background, but has no effect when clicked and appear, but in the LinearLayout orders Imgview in settings, there are effects, neighborhoods expert
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check whether the response of the accounting strikes
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inside the drawable write XML
android: drawable = "@ drawable / loosen Pictures"
android: state_pressed = "false"

/>
android: drawable = "@ drawable / Press Pictures"
android: state_pressed = "true"

/>
Then this XML name into android: background = "@ drawable / Here"
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If this method has no effect on the Layout, only in this way if their under the control has the effect ..... need to manually set
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replace the background image is too small
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android: addStatesFromChildren = "true", you can, but linearlayout more than one, then! Only the first one linearlayout with click effect! How to solve it!
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you go to the code of this linearlayout add a click event to see, and see not have any response.