android-contentresolver

All of the examples I've seen of using registerContentObserver() do so through a ContentProvider interface. But Cursor has a registerContentObserver() call, so I figured maybe the Android folks have put together some deep magic that would allow for getting updates on a SQLite cursor when one of the rows from an active result set changed. Either I'm doing it wrong, or there is no such magic. Here's the code I'm working with, the expectation being that when I click on the button to update the value in row #1 I would get an onChange() callback. Any ideas? public class MainActivity extends

Anyone know how to add playlists to Android in code? I kind of get that I have to insert it into the content resolver but do I have to just put the song id in or do I have to put all of the song's data in? I have been looking for sample code but haven't found any yet. EDIT: Found an answer here is how I do it: public static void addToPlaylist(ContentResolver resolver, int audioId) { String[] cols = new String[] { "count(*)" }; Uri uri = MediaStore.Audio.Playlists.Members.getContentUri("external", YOUR_PLAYLIST_ID); Cursor cur = resolver.query(uri, cols, null, null, null); cur.moveToFirst();

I am using the Telephony.Sms library to load in received and sent sms messages for the app I am working on. When I set the query selection to null (the third item in the query), it will show all the sent and received sms messages on the different types of phones I have been testing on. Cursor c = cr.query(Telephony.Sms.CONTENT_URI, null, null, null, null); But when I set it to a particular number, on the Samsung S9 phone running on API 27 it is not showing any sms messages. On the Nexus runnning on API 23, it will show the received messages but not the sent messages in the listview. On the

I am trying to modify displayed name of a contact programmatically: try { ArrayList<ContentProviderOperation> ops = new ArrayList<ContentProviderOperation>(); ops.add(ContentProviderOperation.newUpdate(Data.CONTENT_URI) .withSelection(ContactsContract.CommonDataKinds.Phone._ID + " = ?", new String[] {contact_id}) .withValue(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME, "anything") .build()); ContentProviderResult[] result = getContentResolver().applyBatch(ContactsContract.AUTHORITY, ops); } catch (Exception e) { Log.w("UpdateContact", e.getMessage()+""); for(StackTraceElement ste : e

I am trying to get image from third party app (e.g WhatsApp) to my app (being tested on Marshmallow). When I do "share image" from WhatsApp and share it with my app, I get URI something like this: content://com.whatsapp.provider.media/item/61025 But in my app when I call getContentResolver().openInputStream(uri) or getContentResolver().openFileDescriptor(uri, "r") with above URI, it crashes with exception: java.lang.SecurityException: Permission Denial: opening provider com.whatsapp.MediaProvider from ProcessRecord{a4b804a 30321:com.myapp/u0a145} (pid=30321, uid=10145) that is not exported