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Java.lang.IllegalStateException: Failed to read x col x string from CursorWindow. Make sure the cursor is initialized correctly.

I developed an application that goes through all the contacts on Android. It has already been published and is currently installed on approximately ~ 800 devices. It works on almost all devices without any problems, but on some I get an error message through BugSense, and I have not yet found a working solution.

Here is one of the stacks I get:

java.lang.IllegalStateException: Couldn't read row 0, col 8 from CursorWindow. Make sure the Cursor is initialized correctly before accessing data from it. at android.os.Parcel.readException(Parcel.java:1335) at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:182) at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:136) at android.database.BulkCursorProxy.getWindow(BulkCursorNative.java:192) at android.database.BulkCursorToCursorAdaptor.onMove(BulkCursorToCursorAdaptor.java:94) at android.database.AbstractCursor.moveToPosition(AbstractCursor.java:178) at android.database.AbstractCursor.moveToNext(AbstractCursor.java:209) at android.database.CursorWrapper.moveToNext(CursorWrapper.java:166) at de.android.contactscleaner.ContactsActivity.deleteContacts(ContactsActivity.java:118) at de.android.contactscleaner.ContactsActivity$1.run(ContactsActivity.java:61) at java.lang.Thread.run(Thread.java:856)

In my code, I do the following before moving on to the cursor, which is also part of the solution:

  private void initCursor() { cr = getContentResolver(); if (cr != null) { cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null); } } private void retryCursorInitialisation() { while (attempt < Rules.cursor_init_attempts) { attempt++; initCursor(); // Check if cursor is initialisated correctly if (cur != null && cur.getColumnCount() != 0) { if (attempt >= Rules.cursor_init_attempts_to_report) { BugSenseHandler.sendEvent("Cursor init succeded after " + attempt + "/" + Rules.cursor_init_attempts + " retries"); } break; } else { if (attempt == Rules.cursor_init_attempts) { BugSenseHandler .sendEvent("Cursor init completly failed after " + attempt + " attempts"); } } } }

It never reinitializes the cursor if it is “broken” because cur.getColumCount () is never 0.

(I read in another stackoverflow that you should check if the column is a number of 0 instead of checking if the cursor is null, but this does not work. This means that there is really only a problem with certain columns / rows.

The part where the error occurs is simple

  while (cur.moveToNext())

Edit:

The full code segment around the part where the problem occurs:

  if (cur != null && cur.getColumnCount() != 0) { try { cur.moveToFirst(); } catch (Exception e) { initCursor(); } while (cur.moveToNext()) ....

Please help me, I get more and more bad grades, not being able to do anything

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2 answers

It looks like this could be due to an error sent to Google: http://code.google.com/p/android/issues/detail?id=32472 . He says he has been appointed, but since then I have not seen any action since this year.

(According to the error, are you updating any rows in the backup database table, which will cause the number of rows to differ when updating CursorWindow ?)

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Try positioning the cursor with moveToFirst and checking its counter to make sure it is not empty before trying to read any data from it.

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Source: https://habr.com/ru/post/943749/

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