Deprecated Java 8 warnings

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#409 opened on May 12, 2025 0 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 4/5
Estimated time: 3-5 days
Newbie friendliness: 42/100

Issue type: Bug
Clarity: Mostly clear
Activity status: Stale
Tech stack: android, flutter, java
Domain: build-system, mobile

Research direction

Start by running an Android debug example from any plugin and inspect the Android build configuration that produces the Java 8 source and target warnings. Update the affected first-party plugin configurations for Java 11, then verify that plugin examples no longer print these warnings.

Written by the indexing model from the issue text.

Description

Java 8 was deprecated with the release of Android Studio Ladybug, and is set to be removed in an upcoming version.

All Flutter's 1st party plugins have migrated to Java 11 now.

Reproduce Steps

Steps to reproduce the behavior:

Run any example of any plugin on Android in debug mode

See warnings:

warning: [options] source value 8 is obsolete and will be removed in a future release
warning: [options] target value 8 is obsolete and will be removed in a future release

Expected behavior

No warnings should be printed.

Version (please complete the following information):

Flutter Version: 3.29.3
OS: Android
plugin: All plugins

Dominant language: C
Stars: 512
Forks: 292
Avg merge: 15h 8m
Merged PRs (30d): 7

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First steps

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