android-contentprovider

问题 I have setup a fragment to pull data from a custom content provider using a CursorLoader. The problem is that when i update a record in the SQLite table using the content resolver, the cursor does not refresh i.e. the getContext().getContentResolver().notifyChange(myUri, null) has no effect. I have to exit the fragment and open it again to see the change. I think the problem is that the URI i have used to update a row is not being observed by the loader : URI to create loader - content://com

问题 I have been implementing my own custom content provider in an app A and want to query its database from a separate app B that calls ContentResolver.query(...) using the appropriate custom URI defined in A. All goes well when A has been running just before I launch B (thus A's process still running in the background). However when I kill A's process, then B fails to query A's database! I thought querying a content provider would automatically start its process so the data can be retrieved. Am

问题 I have a custom ContentProvider which manages the access to a SQLite database. To load the content of a database table in a ListFragment , I use the LoaderManager with a CursorLoader and a CursorAdapter : public class MyListFragment extends ListFragment implements LoaderCallbacks<Cursor> { // ... CursorAdapter mAdapter; @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); mAdapter = new CursorAdapter(getActivity(), null, 0);

问题 After watching the very known video on this topic I decided to go with design pattern B. Using a contentprovider with servicehelper. Basically I have the following files: MyProvider MyDatabase Mycontract In the activity I can now get the contentresolver and query the provider. All is working great so far. Now I need to sync my contentprovider to fetch data from my REST API. Thus I need to implement a service helper service and Rest method. Studying the Google IO app has helped me a lot, I'm a

问题 I've followed this Google tutorial to start an intent to capture an image with new Intent(MediaStore.ACTION_IMAGE_CAPTURE) . The tutorial recommends using the public directory with getExternalStoragePublicDirectory which would work great for my app. But then their example instead uses getExternalFilesDir . Then to pass the URI of the file to the intent with MediaStore.EXTRA_OUTPUT I have to get a content URI because I'd like to target Android N. Before targeting N I would just pass a file://

问题 I've followed this Google tutorial to start an intent to capture an image with new Intent(MediaStore.ACTION_IMAGE_CAPTURE) . The tutorial recommends using the public directory with getExternalStoragePublicDirectory which would work great for my app. But then their example instead uses getExternalFilesDir . Then to pass the URI of the file to the intent with MediaStore.EXTRA_OUTPUT I have to get a content URI because I'd like to target Android N. Before targeting N I would just pass a file://

问题 I have two applications which use the same content provider, but I can't put the same content provider in both applications- it shows INSTALL_FAILED_CONFLICTING_PROVIDER error. So I have put my content provider in a 3rd .apk and used this from two applications and it is working well. Now the problem is- The content provider apk must be installed before any of those two apps can be installed on the device. Otherwise, it shows Provider not found error during installation. So, how can I ensure

问题 I am experimenting with the NotesList sample program in the Android SDK. I've made a slight variation in the program, but when I install my edited version I keep getting the message INSTALL_FAILED_CONFLICTING_PROVIDER in the console when I try to install it when the original notes program is already on the device. What do I need to change in the Provider to make it a unique database? It works fine if I uninstall the original notes program and then install my edited version. 回答1: The authority

问题 I am experimenting with the NotesList sample program in the Android SDK. I've made a slight variation in the program, but when I install my edited version I keep getting the message INSTALL_FAILED_CONFLICTING_PROVIDER in the console when I try to install it when the original notes program is already on the device. What do I need to change in the Provider to make it a unique database? It works fine if I uninstall the original notes program and then install my edited version. 回答1: The authority

问题 I'm ussing this library, the problem starts with: Tray is based on a ContentProvider. A ContentProvider needs a unique authority . When you use the same authority for multiple apps you will be unable to install the app due to a authority conflict with the error message: Failure [INSTALL_FAILED_CONFLICTING_PROVIDER] because i didn't read this before, i used this library to fix problems with multi thread SharedPreference, this project had to become in a module to use in multiple projects. At