1、確認是否寫入了數據庫，可以通過命令行看

2、數據寫入數據庫了，沒有顯示出來（也是我遇到的問題），原因是SmsProvider中的query寫錯了，正確的應該是：

@Nullable
@Override
public?Cursor?query(Uri?uri,?String[]?projection,?String?selection,?String[]?selectionArgs,?String?sortOrder)?{
????int?match?=?matcher.match(uri);
????switch?(match)?{
????????case?SMS_ALL:
????????????break;
????????case?SMS_ONE:
????????????long?id?=?ContentUris.parseId(uri);
????????????selection?=?"_id=?";
????????????selectionArgs?=?new?String[]{String.valueOf(id)};
????????????break;
????????default:
????????????throw?new?RSIllegalArgumentException("Wrong?URI:"?+?uri);
????}
????mDb?=?mHelper.getReadableDatabase();
????Cursor?cursor?=?mDb.query(SendedMsg.TABLE_NAME,?projection,?selection,?selectionArgs,?null,?null,?sortOrder);
????cursor.setNotificationUri(getContext().getContentResolver(),?URI_SMS_ALL);
????//cursor.close();
????return?cursor;
}

注意最后兩行代碼