我有 CursorAdapter 可以使用 CursorLoader 显示来自数据库的数据。现在，我想将搜索功能添加到自定义列表视图。所以，我尝试了这个。但是，这是行不通的。
public class FindPeopleFragment extends BaseFragment implements LoaderCallbacks<Cursor> {
public FindPeopleFragment() {
}
private TextView advancedSearchOption;
private TextView saerchButton;
private EndlessListView listUsers;
private EditText searchWord;
private EditText searchFirstName;
private EditText searchLastName;
private EditText searchEmail;
private EditText searchCountry;
private EditText searchState;
private int offset = 0;
private final int limit = 30;
private boolean mHaveMoreDataToLoad = true;
private VROAccountManager manager;
private ArrayList<VROUser> postsList = new ArrayList<>();
private View advanced;
private Cursor FriendsCursor;
private Cursor FriendsCursorTemp;
// Cursor c;
private TextView description;
long friend_name;
FriendsListCursorAdapter FRIEND_ADAPTER;
DatabaseHelper dh;
FriendinfoService friendinfoService;
String searchValue;
@Override
public void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
title = "My Friends";
}
private View rootView;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
friendinfoService = new FriendinfoService();
if (rootView != null) {
((ViewGroup) rootView.getParent()).removeView(rootView);
return rootView;
}
rootView = inflater.inflate(R.layout.fragment_find_people, null);
getLoaderManager().initLoader(1, null, this);
saerchButton = (TextView) rootView.findViewById(R.id.button_search);
listUsers = (EndlessListView) rootView.findViewById(R.id.user_list);
searchWord = (EditText) rootView
.findViewById(R.id.editText_search_word);
searchFirstName = (EditText) rootView
.findViewById(R.id.editText_search_first_name);
searchLastName = (EditText) rootView
.findViewById(R.id.editText_search_last_name);
searchEmail = (EditText) rootView
.findViewById(R.id.editText_search_email);
searchCountry = (EditText) rootView
.findViewById(R.id.editText_search_country);
searchState = (EditText) rootView
.findViewById(R.id.editText_search_state);
advancedSearchOption = (TextView) rootView
.findViewById(R.id.advancedSearch);
advancedSearchOption.setVisibility(View.GONE);
manager = new VROAccountManager(getActivity());
advanced = rootView.findViewById(R.id.layout_advanced_search);
description = (TextView) rootView.findViewById(R.id.description);
description
.setText("You are friends with the following users. To find new friends or to view friends request sent or received use the menu on right");
searchOption.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence cs, int start, int before, int count) {
AbstractActivity.this.cursorAdapter.getFilter().filter(cs);
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable s) {
// TODO Auto-generated method stub
}
});
listUsers.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Cursor mycursor = (Cursor) listUsers.getItemAtPosition(position);
VROUser user = VROUser.parse(mycursor);
Intent intent = new Intent(getActivity(), ProfileViewActivity.class);
intent.putExtra("userId", user.getUserID());
getActivity().startActivity(intent);
//Toast.makeText(getActivity(), " " + FriendsCursor.getColumnIndex("user_profile_pic"), Toast.LENGTH_SHORT).show();
}
});
return rootView;
}
@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
CursorLoader cursorLoader=null;
if(id==1) {
cursorLoader = new CursorLoader(getActivity(),
FriendinfoTable.CONTENT_URI, null, null, null, null);
}
if (id==2) {
cursorLoader = new CursorLoader(getActivity(),
FriendinfoTable.CONTENT_URI, null,
FriendinfoTable.Cols.FIRST_NAME+" like '%"+searchValue+"%' or "+FriendinfoTable.Cols.LAST_NAME+" like '%"+searchValue+"%'",
null, null);
}
return cursorLoader;
}
@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
System.out.println("Value returningnnnnnnnnnnnnnnnnnnnnnnnnnnn " + data.getCount());
FriendsCursor = data;
if (FRIEND_ADAPTER == null) {
FRIEND_ADAPTER = new FriendsListCursorAdapter(getActivity(),
FriendsCursor, true);
listUsers.setAdapter(FRIEND_ADAPTER);
FRIEND_ADAPTER = null;
} else {
FRIEND_ADAPTER.swapCursor(FriendsCursor);
}
}
@Override
public void onLoaderReset(Loader<Cursor> loader) {
}
}
and adapter class code
public class FriendsListCursorAdapter extends CursorAdapter {
private Cursor cursor;
final VROPreferenceManager preferenceManager = new VROPreferenceManager();
Context con;
public FriendsListCursorAdapter(Context context, Cursor c, boolean b) {
super(context,c,true);
cursor = c;
con=context;
}
public void addItems(Cursor newItems) {
if (0 == newItems.getCount()) {
return;
}
notifyDataSetChanged();
}
public int getCount() {
// TODO Auto-generated method stub
return cursor.getCount();
}
@Override
public View newView(Context context, Cursor cursor, ViewGroup viewGroup) {
LayoutInflater inflater = LayoutInflater.from(context);
View view = inflater.inflate(R.layout.vro_contact_view, null);
bindView(view, context, cursor);
return view;
}
@Override
public void bindView(View view, Context context, Cursor cursor) {
TextView txtID = (TextView) view.findViewById(R.id.text_fname_lname);
txtID.setText(cursor.getString(cursor.getColumnIndex("first_name")));
TextView txtCode = (TextView) view.findViewById(R.id.text_email);
txtCode.setText(cursor.getString(cursor.getColumnIndex("email")));
ImageView profilePic = (ImageView) view.findViewById(R.id.user_image);
VROUser pic = VROUser.parse(cursor);
ImageLoader.getInstance().displayImage(
preferenceManager.getResourceSertver()
+ pic.getProfilePICURL(), profilePic,
Consts.UIL_USER_AVATAR_DISPLAY_OPTIONS);
}
}
如果你们帮助找出我的代码中的问题或如何将搜索功能添加到自定义列表视图，我将很高兴。