Checked for duplicates?

• This issue is not a duplicate

Does it also happen in the desktop version?

• This bug does not occur in the latest version of Anki Desktop

What are the steps to reproduce this bug?

1. Follow the instructions in https://github.com/ankidroid/Anki-Android/wiki/AnkiDroid-API, namely Gradle dependency and Manifest changes required on Android SDK 30+, while replacing com.ichi2.anki with com.ichi2.anki.a (or another parallel build)
2. Execute a query with the content resolver, e.g.

val res: Cursor? = contentResolver.query(
    FlashCardsContract.Note.CONTENT_URI_V2,
    FlashCardsContract.Note.DEFAULT_PROJECTION,
    null,
    null,
    "${FlashCardsContract.Note._ID} desc"
);

Expected behaviour

A non-null Cursor is expected. Instead, the following error message is logged: Failed to find provider info for com.ichi2.anki.flashcards

This is because AnkiDroid.A's manifest has set CardContentProvider's authority uri to ${applicationId}.flashcards, which in the parallel build expands to com.ichi2.anki.a.flashcards.

If I try using that instead of FlashCardsContract.Note.CONTENT_URI_V2, i.e.

val res: Cursor? = contentResolver.query(
    Uri.parse("content://com.ichi2.anki.a.flashcards/notes_v2"),
    FlashCardsContract.Note.DEFAULT_PROJECTION,
    null,
    null,
    "${FlashCardsContract.Note._ID} desc"
);

the following exception is thrown:

FATAL EXCEPTION: main
Process: com.blah.app, PID: 15508
java.lang.IllegalArgumentException: uri content://com.ichi2.anki.a.flashcards/notes_v2 is not supported
	at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:172)
	at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:142)
	at android.content.ContentProviderProxy.query(ContentProviderNative.java:481)
	at android.content.ContentResolver.query(ContentResolver.java:1226)
	at android.content.ContentResolver.query(ContentResolver.java:1158)
	at android.content.ContentResolver.query(ContentResolver.java:1114)
	at com.blah.app.MainActivity.stuff(MainActivity.kt:33)
        ...

The parallel build's content provider now responds, but since it still matches on the incorrect FlashCardsContract.AUTHORITY, the uri is deemed invalid

Debug info

AnkiDroid Version = 2.19beta6 (638d0e2)

Backend Version = 0.1.42-anki24.06.3 (24.06.3 d678e39350a2d243242a69f4e22f5192b04398f2)

Android Version = 12 (SDK 31)

(Optional) Anything else you want to share?

One way might be to have CardContentProvider construct its own copy of FlashCardsContract.AUTHORITY using R.string.applicationId BuildConfig.APPLICATION_ID, before passing it to the matcher

Research

• I have checked the manual and the FAQ and could not find a solution to my issue
• (Optional) I have confirmed the issue is not resolved in the latest alpha release (instructions)