问题
how to add items to the expandable list by drag and drop ?e.g If you drag and drop some text it should be added in expandable list.
回答1:
You would need to draw a custom component see this page for more information:
http://developer.android.com/guide/topics/ui/custom-components.html.
You would need to override the draw method and draw your own list view as well as where ever your dragging your items from. This is a complicated task and may seem daunting but I haven't really seen anyone do a drag and drop on android before. You may be the first!
If you need to simply reorder your listview then you should check out this thread:
reordering of listview items by drag and drop using android
来源：https://stackoverflow.com/questions/7136386/adding-items-to-expandable-list-view-by-drag-and-drop-android