Android 如何在上下文菜单中获取ListView项id
我有一个listView,它执行以下操作:Android 如何在上下文菜单中获取ListView项id,android,listview,multichoiceitems,Android,Listview,Multichoiceitems,我有一个listView,它执行以下操作: @Override protected void onListItemClick(ListView l, View v, int position, long id) { super.onListItemClick(l, v, position, id); Intent i = new Intent(this, TodoDetailActivity.class); Uri todoUri = Uri.parse(MyTodoCo
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);
Intent i = new Intent(this, TodoDetailActivity.class);
Uri todoUri = Uri.parse(MyTodoContentProvider.CONTENT_URI + "/" + id);
i.putExtra(MyTodoContentProvider.CONTENT_ITEM_TYPE, todoUri);
Toast.makeText(getApplicationContext(),""+id,Toast.LENGTH_SHORT).show();
startActivity(i);
}
注意,我使用一个长id传递给内容提供商,以打开一个新活动并编辑与该id关联的“Todo”
现在我正试图通过上下文菜单删除“待办事项”
但是,我不知道如何获取项目id:
this.getListView().setMultiChoiceModeListener(new AbsListView.MultiChoiceModeListener() {
@Override
public void onItemCheckedStateChanged(ActionMode actionMode, int i, long l, boolean b) {
//Not Used
}
@Override
public boolean onCreateActionMode(ActionMode actionMode, Menu menu) {
MenuInflater inflater = actionMode.getMenuInflater();
inflater.inflate(R.menu.context_menu, menu);
return true;
}
@Override
public boolean onPrepareActionMode(ActionMode actionMode, Menu menu) {
return false;
}
@Override
public boolean onActionItemClicked(ActionMode actionMode, MenuItem menuItem) {
switch (menuItem.getItemId()) {
case R.id.menu_delete_multiple:
for (int i = adapter.getCount() - 1; i >= 0; i--) {
if (getListView().isItemChecked(i)) {
Toast.makeText(getApplicationContext(),""+i,Toast.LENGTH_SHORT).show();
AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo)menuItem.getMenuInfo();
Uri uri = Uri.parse(MyTodoContentProvider.CONTENT_URI+"/"+ what'sTHEIDE???);
getContentResolver().delete(uri, null, null);
}
}
fillData();
actionMode.finish(); // Action picked, so close the CAB
return true;
default:
return false;
}
}
@Override
public void onDestroyActionMode(ActionMode actionMode) {
actionMode = null;
}
});
在我的onActionItemClicked()
区域中,我假设我可以从列表视图中获得相同的“长id”。我必须调用什么才能将id传递到onActionItemClicked()
作为一名android初学者,我有点目瞪口呆。原来我想得太多了
long mId = getListView().getAdapter().getItemId(i);
Uri uri = Uri.parse(MyTodoContentProvider.CONTENT_URI+"/"+ mId);
getContentResolver().delete(uri, null, null);
不需要复杂的AdapterView方法。info.id一直返回null,因为info为null,所以我只是检索了单击的列表视图项的id,并将其传递给内容提供商进行处理