android-contentprovider

Multiprocess Content Providers synced to default one

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问题 According to Android documentation : android:multiprocess Whether or not an instance of the content provider can be created in every client process — "true" if instances can run in multiple processes, and "false" if not. The default value is "false". Normally, a content provider is instantiated in the process of the application that defined it. However, if this flag is set to "true", the system can create an instance in every process where there's a client that wants to interact with it, thus

SQLiteConstraintException: error code 19: constraint failed — Android error

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问题 I have seen some other questions about this, but none of the answers really seemed to work for my code. I'm getting a 'SQLiteConstraintException: error code 19: constraint failed' error when I try to insert into my DB. Here is the code for the insert operation. db.insert returns a -1 right now, which leads to the "failed to insert" message. Here is the the relevant Content Provider code: public static final String PROVIDER_NAME = "com.oliverapps.provider.DB"; public static final Uri CONTENT

MMS CONTENT PROVIDER ISSUE (Samsung Galaxy S3)

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问题 We run into the following crash when we attempt to query "content://mms-sms/conversations/" on a Samsung Galaxy S3 (Android 4.0.4) running on the Sprint network. Our calling code: Uri uri = Uri.parse("content://mms-sms/conversations/"); Log.e("IL", "CONTENT MIME " + context.getApplicationContext().getContentResolver().getType(uri)); // The next call crashes... Cursor cursor = context.getApplicationContext().getContentResolver().query(uri, null, null, null, null); The interesting fact is that

How to batch update datas in ContentProvider,something confused me

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How can i execute this sql in content Provider as below: update dtrips set dtp_day_idx=dtp_day_idx+2 where tp_id=1 Can anyone help me fix the code DTrip dTrip = new DTrip(); ContentValues values = createContentValues(dTrip); values.put("dtp_day_idx" ,...); String select ="tp_id="+tripId; mContentResolver.update(UsersColumns.CONTENT_URI, values, select, null); Thanks. 来源： https://stackoverflow.com/questions/9155395/how-to-batch-update-datas-in-contentprovider-something-confused-me

nullPointerException with extended SimpleCursorAdapter

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问题 I'm learning about custom providers and loaders. As a simple example I'm trying to implement a GridView that shows the pictures stored in the external SD card. Although I've read a lot (documentation, threads on SO, Google groups, forums...) I'm not able to get my code working. I know that several issues may be present on this example but I want to go step by step. The first error stopping the code is a NullPointerException , so my question is how to fix it. This is a minimal version of my

access user dictionary android

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问题 Hi this is my code to get the words from the user dictionary. this is my code but i am not able to run it... private String getwordlist() { String[] mSelectionArgs={""}; String[] mProjection ={UserDictionary.Words._ID, UserDictionary.Words.WORD, UserDictionary.Words.FREQUENCY}; String mSelectionClause = null; String mSortOrder = null; mCursor = getContentResolver().query( UserDictionary.Words.CONTENT_URI, // The content URI of the words table mProjection, // The columns to return for each row

Obtaining contacts from content provider without duplicates or invalid contacts, and save to Realm

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问题 I have this code (thankfully provided by @EpicPandaForce) and I have problem with deletion. When I add new contact it works like a charm while when I delete contact (or number from that contact if there are two of them) it stays persisted in Realm. How can I get it working properly? realm.executeTransaction(new Realm.Transaction() { @Override public void execute(Realm realm) { Contact realmContact = new Contact(); String filter = "" + ContactsContract.Contacts.HAS_PHONE_NUMBER + " > 0 and " +

Getting contact number using content provider in android

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I followed this tutorial and got the basics of Content Providers : http://www.vogella.de/articles/AndroidSQLite/article.html But wanted to know how can i get the contact number that is stored against display name. tried with "ContactsContract.Contacts.CONTENT_VCARD_TYPE". But got an error. Please let me know if there is any solution. Thanks Sneha This is a good tutorial about Getting contact number using content provider in android http://www.higherpass.com/Android/Tutorials/Working-With-Android-Contacts/ and http://www.app-solut.com/blog/2012/06/retrieval-of-contacts-with-contact-contract/

android bookmark ContentProvider makes bookmark but not visible in browser's bookmarks

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I'm using Android's Browser Bookmark ContentProvider to create a new bookmark programatically. The bookmark is created (I can retrieve it programatically via the ContentProvider) but the bookmark isn't visible in the browser bookmark view. Thoughts? // Saving the bookmark via ContentProvider final ContentValues bookmarkValues = new ContentValues(); bookmarkValues.put(Browser.BookmarkColumns.TITLE, title); bookmarkValues.put(Browser.BookmarkColumns.URL, url); final Uri newBookmark = getContentResolver().insert(Browser.BOOKMARKS_URI, bookmarkValues); // Retrieving Cursor cursor =

What to do in custom ContentProvider's fillWindow() method?

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I'm writing a custom ContentProvider that serves up content consisting of a single, constant string which I represent as a one-row table having columns _id = 0 and value = "SomeString". This string is not stored in a database, so I developed a subclass of CrossProcessCursor that has does everything required to behave like what I described above. The documentation for CrossProcessCursor is very sparse and doesn't really explain what the fillWindow() method should be doing beyond the obvious. Based on the descriptions of CursorWindow's methods, I put the following together, which I thought