使用带有 flutter 的 Firestore 时出现问题

Question

I have a problem when i try to access the data stored in cloud firestore, knowing that the firebase authentication is working perfectly. the debug console gives me this message

W/le.esi_gabsenc(18680): Accessing hidden method Lsun/misc/Unsafe;->putLong(Ljava/lang/Object;JJ)V (greylist, linking, allowed)
W/le.esi_gabsenc(18680): Accessing hidden method Lsun/misc/Unsafe;->getObject(Ljava/lang/Object;J)Ljava/lang/Object; (greylist, linking, allowed)
W/le.esi_gabsenc(18680): Accessing hidden method Lsun/misc/Unsafe;->getInt(Ljava/lang/Object;J)I (greylist, linking, allowed)
W/le.esi_gabsenc(18680): Accessing hidden method Lsun/misc/Unsafe;->getObject(Ljava/lang/Object;J)Ljava/lang/Object; (greylist, linking, allowed)
W/le.esi_gabsenc(18680): Accessing hidden method Lsun/misc/Unsafe;->putObject(Ljava/lang/Object;JLjava/lang/Object;)V (greylist, linking, allowed)
W/le.esi_gabsenc(18680): Accessing hidden method Lsun/misc/Unsafe;->getInt(Ljava/lang/Object;J)I (greylist, linking, allowed)
W/le.esi_gabsenc(18680): Accessing hidden method Lsun/misc/Unsafe;->putLong(Ljava/lang/Object;JJ)V (greylist, linking, allowed)
W/le.esi_gabsenc(18680): Accessing hidden method Lsun/misc/Unsafe;->getLong(Ljava/lang/Object;J)J (greylist,core-platform-api, linking, allowed)
W/le.esi_gabsenc(18680): Accessing hidden method Lsun/misc/Unsafe;->getObject(Ljava/lang/Object;J)Ljava/lang/Object; (greylist, linking, allowed)

I'm using Samsung galaxy A50 android 10.

Answer 1

The bad news is taking a cursory look seems to show that it's not a Flutter issue but a general Android issue with how Android protobufs are using hidden APIs.

It's been fixed on Android 11 in https://android-review.googlesource.com/c/platform/art/+/1294616/ but unfortunately is unlikely to be backported to older Android versions. A more likely scenario is plugins updating to newer transitive versions of protobufs. There isn't much we can do in Flutter. Using the IDE to hide those messages in the output is a reasonable workaround in the meantime such as #27095 (comment).

Internal issue b/154851649. External protobuf issue protocolbuffers/protobuf#7337.

https://github.com/flutter/flutter/issues/27095