android-cursor

问题 I have a list view to display albums. In each album list item, I need to display some information from each photo in this album. Here is how my cursor loader looks like: @Override public Loader<Cursor> onCreateLoader(int id, Bundle args) { return new CursorLoader(this, AlbumsColumns.CONTENT_URI, null, null, null, null); } @Override public void bindView(View view, Context context, Cursor cursor) { long albumId = cursor.getLong(cursor.getColumnIndex(AlbumsColumns._ID)); Cursor photoCursor =

问题 In my application I'm fetching inbox messages from native application to my application . Also there are checkboxes to select multiple messages.But the problem arises are no messages are displaying in listview while running code and also showing error android.database.StaleDataException: Attempted to access a cursor after it has been closed. ArrayAdapter<SMSListModel> adapter; List<SMSListModel> list = new ArrayList<SMSListModel>(); TextView textViewSMSSender, textViewSMSBody public void

问题 I'm trying to remove an item from a cursor object, and I'm not sure how to do it (or if it's possible). I don't actually want to remove the item from the database, just 'filter' it and not display it, depending on user settings. For example here, FILTER_TEXT is from the application preferences and it contains text that the cursor must contain or else it is removed. Cursor mCursor = mDB.query(dbTable, new String[] {KEY_ROWID, KEY_NAME, KEY_URL}, null, null, null, null, null); if (mCursor

问题 I did following code for deleting selected contacts from sim card. but its not deleting and also not throwing any error. protected void DeleteContacts(ArrayList<String> ids){ int flg = 0; String[] strids = new String[ids.size()]; strids = ids.toArray(strids); for (int i = 0; i < strids.length; i++) { Cursor sims = getActivity().getContentResolver().query( Uri.parse("content://icc/adn"), null, "_id=?", new String[]{strids[i]}, null); sims.moveToFirst(); if (sims.getCount()>0) { String

问题 Consider the scenario as in this picture: Three photos, one of them is a large GIF file (3MP). I'm querying MediaStore in order to retrieve the correspondent thumbnails. If I initialize the Cursor via CursorLoader with this sortOrder: MediaStore.Images.Media.DATE_ADDED + " DESC"" What happens: MediaStore returns the previous successfully retrieved thumbnail: Expected behaviour: when MediaStore cannot retrieve the thumbnail of a given image for some reason it has to return NULL, as per its

问题 In my Android application, I am using Sqlite DataBase to store the data from the server. I am using ContentProvider and ContentResolver to access the data from the DataBase and using CursorAdapter to bind the data to the ListView. As soon the data is inserted into the DataBase, CursorAdapter will be notified to update the ListView. Also, whenever I scroll the ListView, I get new data from the DataBase table and ListView will be updated. But once I reaches to the end of the table row, I need

问题 I have found lots of answers on SO and other websites about how to fill a Spinner with a Cursor , but all of them use the deprectated SimpleCursorAdapter(Context, int, String[], int[]) constructor to do that. No one seems to describe how to do it with API level 11 and above. The API tells me to use the LoaderManager , but I'm not sure about how to use that. 回答1: I would suggest implementing your own CursorAdapter instead of using SimpleCursorAdapter. Implementing a CursorAdapter is no harder

问题 I'm trying to do horizontal swiping using a cursor but I'm just not grokking something, and hopefully someone here can help me understand. I've got an activity that shows a list of items. It uses a ListView that is backed by a custom CursorAdapter , and that adapter is managed by a LoaderCallback . This is all standard stuff. When the user clicks an item in the list, I want to show detailed information about that item. Currently I start a new activity, passing the ID of the selected item.

问题 My Custom Adapter that extends SimpleCursorAdapter for my ListFragment does not display the items in my database correctly. it does not display the text in the TextView, what else do I have to do to the cursor for it to show the correct text? I thought I had to override the bindView but that had no effect Setting the adapter: public void populateList(){ String[] fields = new String[] {BowlersDB.NAME}; Cursor c = getActivity().getContentResolver().query(BowlersDB.CONTENT_URI, new String[]

问题 I create an Application to Read, Update, Delete Contacts Details. Here is a problem to updating Contact name and number.Could anyone help me please how can I do that. I am using the following code, but it's not working. @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { final View view = inflater.inflate(R.layout.fragment_fragment_edit, container, false); textView = (TextView) view.findViewById(R.id.tvnew1); imageView = (ImageView)