android-contentprovider

问题 I have a contact ID, how do I get the group the contact is assigned to? I am sure it is something to do with the Contacts.Groups class but I cannot figure it out. 回答1: In GroupMembership.PERSON_ID you have the ID of the Person, and in the same table GroupMembership.GROUP_ID you have the ID of the group. You can retrieve the groups with the Contacts.Groups . Remember that in every "table" there is and unique ID to identify the row. Hope this helps. (Im working on it too) 来源： https:/

问题 I'm building an Android app with multiple productFlavors , and using Facebook SDK v4.1 for login and sharing contents. The problem is that when I try to install an app on a device which already has the same app installed (but different flavor), it raises an error. It doesn't allow me to install the second app unless I uninstall the existing one. <provider android:authorities="com.facebook.app.FacebookContentProvider{my_app_id}" android:name="com.facebook.FacebookContentProvider" android

问题 The app has data in a SQLite database. The UI is primarily a RecyclerView. The question is how to best to transfer data from the database into the UI, whilst keeping off the main thread? I originally planned to use a CursorLoader, ContentProvider, and RecyclerView. But reading around it looks like RecyclerView has no out-of-the-box support for Cursor-supplied data. Dang. That then leaves me with a few other options... AsyncTask to load the data, put it into model objects, and pass into the

问题 I am fetching Genre list from media content Provider of android using CursorLoder class. below is my cursor query to fetch the list of Genre. public Loader<Cursor> onCreateLoader(int id, Bundle args) { // currently filtering. Uri baseUri; baseUri = MediaStore.Audio.Genres.EXTERNAL_CONTENT_URI; String[] STAR = { "*" }; return new CursorLoader(getActivity(), baseUri, STAR, null, null, null ); } Now, i got all the genre list from the media content provider but the problem with the data i got. I

问题 I have a custom content provider in my Android app that works reasonably well. I expect other apps to also access my content provider. I would like some clean way to communicate exceptions and errors, but as far as I can tell the Android content provider framework doesn't provide any way to propagate exceptions across processes. How should I indicate an exception state to my caller? Do I have to somehow encode it into my returned data and rely on clients to check for it? Is there any

问题 Can anyone point to a good source or come up with a brief listing of conceptual android programming DONT's when designing an App? I dont want my question to be vague, so I'll give dummy examples(which might not make any sense or may be completely incorrect) to explain what kind of answers I am looking for are things like : Eg: Avoiding these help you design/program robust android apps Dont acquire wake locks when waiting for a server response OR Dont have this logic in OnReceive of a

问题 I want only a single notification after all the bulk insertion is done into database. Please provide an example to use bulkInsert() function. I cannot find a proper example on internet. Please Help!!!! 回答1: This is bulkInsert using ContentProvider. public int bulkInsert(Uri uri, ContentValues[] values){ int numInserted = 0; String table; int uriType = sURIMatcher.match(uri); switch (uriType) { case PEOPLE: table = TABLE_PEOPLE; break; } SQLiteDatabase sqlDB = database.getWritableDatabase();

问题 I am writing an Android application that interfaces with a RESTful service. This web service essentially fronts a file system, and provides metadata as well CRUD access to the files. My application retrieves the metadata, and exposes it to 3rd party apps through a ContentProvider . I need to add the ability for 3rd party applications, running on the same device as my app, to CRUD the actual files by making requests to/from my app (not directly with the server). This means they need to either

问题 I have created one Activity in that I am implementing CursorLoader for load data from Database. I have done that thing for all records of that Table but I want to load 30-30 records like Load More Functionality I have tried to create query and its loading first 30 records but I cant able to understand how can I request for new records. My Activity Code is Like: public class ProductListActivity extends AppCompatActivity implements LoaderManager.LoaderCallbacks<Cursor> { /** * Records in list *

问题 I am trying to share my internal storage file via Gmail client on my Moto Razr, but every time I sent to my test gmail account, I got everything except attachment. This is how I invoke and start gmail, while add file as attachment. private void saveDaily() { Intent intent = new Intent(android.content.Intent.ACTION_SEND_MULTIPLE); intent.setType("text/plain"); intent.putExtra(Intent.EXTRA_EMAIL, new String[] { loadEmailAddress() }); intent.putExtra(Intent.EXTRA_SUBJECT, "Daily"); intent