[Bug]: Plugin call after navigation can be answered before reply proxy is updated

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难度
2/5
预计耗时
1-3 小时
新手友好度
84/100
Issue 类型
缺陷
描述清晰度
描述清楚
活跃度
活跃
技术栈
android, java
领域
mobile-dev

调研方向

从 MessageHandler.java 开始，检查导航或重新加载期间回复代理更新与消息发布的顺序。在 Android 上通过快速读取 Preferences 重现该问题，然后验证新页面发起的插件调用使用更新后的代理并得到解析，而不是被静默丢弃。

由索引模型根据 Issue 内容生成。

描述

triage
Capacitor Version

@capacitor/cli: 8.4.0
@capacitor/core: 8.4.0
@capacitor/android: 8.4.0

Other API Details
npm: 11.0.0
node: 22.13.0
Platforms Affected
  • iOS
  • Android
  • Web
Current Behavior

After a reload or navigation, a fast plugin call (e.g. a Preferences read, which is how the bug appeared for us) can potentially never resolve as it uses the previous proxy instead of the updated one. The cause are these lines in MessageHandler.java:

if (isMainFrame) {
    postMessage(message.getData());
    javaScriptReplyProxy = replyProxy;
}

In case of a fast plugin call, sendResponseMessage() is reached before the proxy is updated, and therefore still uses the previous proxy and is silently dropped. Later calls work, and there's also no issue upon first page load as, at this point, javaScriptReplyProxy is null and the old evaluateJavascript path is used instead.

Expected Behavior

All plugin calls of the new page should go through the updated proxy.

Project Reproduction

Reproduced in a private repo

Additional Information

The bug is avoidable with android.useLegacyBridge = true as this routes every response through evaluateJavascriptand avoids the proxy entirely.

I've locally fixed the bug by swapping the two lines above, i.e., making sure the proxy is updated before the message post.

主要语言
TypeScript
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