android-building is for technical discussion of building the AOSP platform distribution from source without modification for AOSP-supported build targets.

The following are off-topic:

- distributions other than AOSP

- targets not supported by AOSP; see android-porting

- add-on applications and proprietary services not included in the AOSP platform distribution

- modifications to AOSP; see android-porting

- bugs; see Reporting Bugs

- repo and Gerrit; see repo-discuss

- CTS and CTS; request to join android-compatibility and then post after join approved

- empty, non-technical, commercial, lobbying, spam, solicitation, etc.

- multiple posts of similar content; this is a moderated group so please wait for moderation rather than re-posting

- cross-posts; pick the one best group rather than posting to multiple groups

- questions about release schedules and unannounced features

- inappropriate language or non-constructive criticism

- build errors as image attachment; instead please include a short excerpt of the build error in text format or a short link to longer text

What's difference between java -jar signapk.jar ... and apksigner sign ... in Android 9

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