Android内容提供商不更新数据库

Question

任何无知都可以让我失望，但我真的需要帮助，并尝试过Vogella和许多教程无济于事！

  

我的内容提供商查询：

@Override
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
                   String sortOrder) {
    final SQLiteDatabase db = mOpenHelper.getReadableDatabase();

    final int match = sUriMatcher.match(uri);
    switch (match) {
        default: {
            // Most cases are handled with simple SelectionBuilder
            final SelectionBuilder builder = buildExpandedSelection(uri, match);
            builder.where(selection, selectionArgs).query(db, projection, sortOrder);
            builder.where(selection, selectionArgs).query(db, projection, sortOrder).setNotificationUri(getContext().getContentResolver(), uri);
            return builder.where(selection, selectionArgs).query(db, projection, sortOrder);
       }
   }
}

  

更新提供商部分：

@Override
public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
    LOGV(TAG, "update(uri=" + uri + ", values=" + values.toString() + ")");
    final SQLiteDatabase db = mOpenHelper.getWritableDatabase();
    final SelectionBuilder builder = buildSimpleSelection(uri);
    int retVal = builder.where(selection, selectionArgs).update(db, values);
    getContext().getContentResolver().notifyChange(uri, null);
    return retVal;
}

  

片段资料：点击方法

在列表视图中执行

ContentValues values = new ContentValues();
values.put(NewaysContract.News.READ,1);
getActivity().getContentResolver()
             .update(CONTENT_URI,values,CONTENT+"=?",new String[] { contv });