Hi Stanley
I guess, wut I am trying to say is, suppose we have this scenario that
long press an group item in expandablelist then popup a dialog, click the
delete button on the dialog will delete this group item in the
expandablelist without meeting this indexoutofboundexception.
Thx
Leo
On Tuesday, December 9, 2008 7:25:18 PM UTC-8, Stanley.lei wrote:
>
> Hi all,
>
> I'm developing an application like management system, and I used the
> widget ExpandedListView as the display view. Instead of connecting it
> to sqlite database directly, I created two list as the dataset. The
> detailed code is as following list:
>
> private List<Map<String, String>> mGroupType = new
> ArrayList<Map<String, String>>();
> private List<List<Map<String, String>>> mGroupInfo = new
> ArrayList<List<Map<String, String>>>();
>
> private void showGroupView() {
> // add layout to the view
> LinearLayout layout = new LinearLayout(this);
> layout.setOrientation(LinearLayout.VERTICAL);
> LayoutParams para = new LayoutParams(LayoutParams.FILL_PARENT,
> LayoutParams.FILL_PARENT);
> setContentView(layout, para);
>
> // add expanded list view to layout
> mListView = new ExpandableListView(this);
> LayoutParams params = new LayoutParams(LayoutParams.FILL_PARENT,
> LayoutParams.FILL_PARENT);
> layout.addView(mListView, params);
>
> // set list view adapter
> mListAdapter = new SimpleExpandableListAdapter(
> this,
> mGroupType,
> android.R.layout.simple_expandable_list_item_1,
> new String[] {"GROUP_TYPE"},
> new int[] { android.R.id.text1 },
> mGroupInfo,
> android.R.layout.simple_expandable_list_item_2,
> new String[] {"GROUP_INFO" },
> new int[] { android.R.id.text1 }
> );
> mListView.setAdapter(mListAdapter);
> mListView.setOnChildClickListener(new OnChildClickListener() {
>
> public boolean onChildClick(ExpandableListView parent, View v,
> int groupPosition, int childPosition, long id) {
> return editGroup(groupPosition, childPosition, id);
> }
>
> });
> }
>
> private void refreshGroupData() {
> // fresh mGroupType and mGroupInfo
> mGroupType.clear();
> mGroupInfo.clear();
>
> fetchAllGroup(mGroupType, mGroupInfo);
>
> ((BaseExpandableListAdapter) mListAdapter).notifyDataSetChanged();
> }
>
> When I removed a item in the list, the method refreshGroupData() will
> be called. Everything is ok except that when I tried to remove the
> last item in the list, an exception was threw with the following trace
> info:
>
> 12-10 11:18:49.738: ERROR/AndroidRuntime(194): Uncaught handler:
> thread main exiting due to uncaught exception
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194):
> java.lang.IndexOutOfBoundsException: Invalid location 0, size is 0
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> java.util.ArrayList.get(ArrayList.java:350)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> android.widget.SimpleExpandableListAdapter.getChildrenCount
> (SimpleExpandableListAdapter.java:255)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> android.widget.ExpandableListConnector.refreshExpGroupMetadataList
> (ExpandableListConnector.java:489)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> android.widget.ExpandableListConnector.access$000
> (ExpandableListConnector.java:49)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> android.widget.ExpandableListConnector$MyDataSetObserver.onChanged
> (ExpandableListConnector.java:684)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> android.database.DataSetObservable.notifyChanged
> (DataSetObservable.java:29)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> android.widget.BaseExpandableListAdapter.notifyDataSetChanged
> (BaseExpandableListAdapter.java:56)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> com.ourdroid.account.GroupSetting.refreshGroupData(GroupSetting.java:
> 50)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> com.ourdroid.account.GroupSetting.deleteGroup(GroupSetting.java:135)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> com.ourdroid.account.GroupSetting.onOptionsItemSelected
> (GroupSetting.java:109)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> android.app.Activity.onMenuItemSelected(Activity.java:1964)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> com.android.internal.policy.impl.PhoneWindow.onMenuItemSelected
> (PhoneWindow.java:708)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:
> 138)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> com.android.internal.view.menu.MenuBuilder.performItemAction
> (MenuBuilder.java:804)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> com.android.internal.view.menu.IconMenuView.invokeItem
> (IconMenuView.java:435)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> com.android.internal.view.menu.IconMenuItemView.performClick
> (IconMenuItemView.java:120)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> android.view.View.onTouchEvent(View.java:3523)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> android.widget.TextView.onTouchEvent(TextView.java:4410)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> android.view.View.dispatchTouchEvent(View.java:3178)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:857)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:857)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> com.android.internal.policy.impl.PhoneWindow
> $DecorView.dispatchTouchEvent(PhoneWindow.java:1545)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> android.view.ViewRoot.handleMessage(ViewRoot.java:1140)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> android.os.Handler.dispatchMessage(Handler.java:88)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> android.os.Looper.loop(Looper.java:123)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> android.app.ActivityThread.main(ActivityThread.java:3742)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> java.lang.reflect.Method.invokeNative(Native Method)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> java.lang.reflect.Method.invoke(Method.java:515)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run
> (ZygoteInit.java:739)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> com.android.internal.os.ZygoteInit.main(ZygoteInit.java:497)
> 12-10 11:18:49.997: ERROR/AndroidRuntime(194): at
> dalvik.system.NativeStart.main(Native Method)
>
> Could anyone help me on this issue?
>
> Any help will be appreciated.
>
> Stanley
>
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