// Create an adapter with List of stores and populate the List with // values ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(),androID.R.layout.simple_List_item_1,StoreList); setlistadapter(adapter); mDbHelper.close(); } /* * (non-Javadoc) * * Handles the event when an item is clicked on left pane,performs action * based on the selection in left pane * * @see androID.app.ListFragment#onListItemClick(androID.Widget.ListVIEw,* androID.vIEw.VIEw,int,long) */ @OverrIDe public voID onListItemClick(ListVIEw l,VIEw v,int position,long ID) { String selectedStore = (String) getlistadapter().getItem(position); DetailFragment fragment = (DetailFragment) getFragmentManager() .findFragmentByID(R.ID.detailFragment); if (fragment != null && fragment.isInLayout()) { v.setBackgroundcolor(getResources().getcolor(R.color.BLUE)); // passes selectedStore to detail fragment fragment.setText(selectedStore); // getItemList(selectedStore); }
使用setBackground永久设置颜色,但是当选择另一个项目时,我希望它消失.
我了解如何在ListVIEw中使用选择器,但在我的情况下,如果我没有为listvIEw定义任何xml,那么我将如何使用“selector”?我正在使用预定义的androID.R.layout.simple_List_item_1.
RES /颜色/ menu_highlight.xml
<?xml version="1.0" enCoding="utf-8"?><selector xmlns:androID="http://schemas.androID.com/apk/res/androID"> <item androID:state_pressed="true" androID:drawable="@color/red" /> <item androID:state_selected="true" androID:drawable="@color/red" /> <item androID:drawable="@color/white" /></selector>
RES /值/ colors.xml:
<?xml version="1.0" enCoding="utf-8"?><resources> <color name="white">#FFFFFF</color><color name="red">#FF0000</color></resources>
res / layout / menuitem.xml ::(列表中的每个项目的XML)
<?xml version="1.0" enCoding="utf-8"?><linearLayout xmlns:androID="http://schemas.androID.com/apk/res/androID" androID:layout_height="wrap_content" androID:layout_wIDth="fill_parent"> <TextVIEw androID:ID="@+ID/textmenu" androID:layout_height="wrap_content" androID:text="text" androID:textcolor="#FFFFFF" androID:background="@color/menu_highlight" androID:visibility="visible" androID:layout_wIDth="fill_parent" /></linearLayout>
最后,在ListFragment类中,添加VIEw prevIoUs并将以下代码添加到onListitemclick函数中(在ListFragment: highlight selected row中提到)
public class MenuListFragment extends ListFragment{VIEw prevIoUs;@OverrIDe public voID onListItemClick(ListVIEw l,long ID) { super.onListItemClick(l,v,position,ID); //Logic to highlight selected item prevIoUs.setSelected(false); v.setSelected(true); prevIoUs=v; }}总结
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