卸载AppsFlyer的InstallConversion监听器时触发相关警告求助

尝试卸载AppsFlyer的InstallConversion监听器时，出现以下错误警告：

Sending onInstallConversionDataLoaded with no listeners registered

已严格遵循官方指南操作，但警告仍未消除。按文档方式移除监听器（代码见下文）也无效，求解决办法。

业务代码 #

import React, { useEffect } from 'react';
import appsFlyer from 'react-native-appsflyer';
import NonRenderOnChangeData from '../nonRenderOnChangeData/NonRenderOnChangeData';
import { useFocusEffect } from '@react-navigation/native';

function AppsFlyerHandler({ navigation }) {
  useFocusEffect(() => {
   // Configure listeners before initializing SDK
      const onInstallConversionDataCanceller = appsFlyer.onInstallConversionData(
      (res) => {
        console.log("res", res);
        if (JSON.parse(res.data.is_first_launch) == true) {
          if (res.data.af_status === 'Non-organic') {
            if (NonRenderOnChangeData.userIsEligableForCampaign()) {
              navigation.navigate('LoadingPage', {entitlementID: res.data.campaign});
            }
            console.log('This is first launch and a Non-Organic install. Media source: ' + media_source + ' Campaign: ' + campaign);
          } else if (res.data.af_status === 'Organic') {
            console.log('This is first launch and a Organic Install');
          }
        } else {
            console.log('This is not first launch');
        }
      }
    );

    const onAppOpenAttributionCanceller = appsFlyer.onAppOpenAttribution((res) => {
      if ("deep_link_value" in res.data) {
        if (NonRenderOnChangeData.userIsEligableForCampaign()) {
          navigation.navigate('LoadingPage', {entitlementID: res.data.deep_link_value});
        }
      }
    });

    // Initialize AppsFlyer here
    appsFlyer.initSdk(
      {
        devKey: 'xxxxxxxx',
        isDebug: true,
        appId: 'xxxxxxx',
        onInstallConversionDataListener: true,
      },
      (result) => {
        console.log("AppsFlyer Init",result);
      },
      (error) => {
        console.error("AppsFlyer Init",error);
      }
    );

    return () => {
      onInstallConversionDataCanceller();
      onAppOpenAttributionCanceller();
    };
  }); 

  return null;
}

export default AppsFlyerHandler;

尝试过的监听器移除代码 #

if (onInstallConversionDataCanceller) {
 onInstallConversionDataCanceller();
 console.log('unregister onInstallConversionDataCanceller');
 onInstallConversionDataCanceller = null;
}
if (onAppOpenAttributionCanceller) {
 onAppOpenAttributionCanceller();
 console.log('unregister onAppOpenAttributionCanceller');
 onAppOpenAttributionCanceller = null;
} 

针对这个警告，可从以下几个方向排查修复：

1. 分离SDK初始化与监听器生命周期
   useFocusEffect会在页面焦点变化时重复触发，导致SDK多次初始化，而监听器被反复注册/移除，SDK可能在监听器移除后仍尝试发送事件。建议将SDK初始化移到组件挂载时的useEffect中，仅执行一次，监听器的注册/移除保留在useFocusEffect：

useEffect(() => {
  // 仅初始化一次SDK
  appsFlyer.initSdk(
    {
      devKey: 'xxxxxxxx',
      isDebug: true,
      appId: 'xxxxxxx',
      onInstallConversionDataListener: true,
    },
    (result) => console.log("AppsFlyer Init", result),
    (error) => console.error("AppsFlyer Init", error)
  );
}, []);

useFocusEffect(() => {
  // 注册监听器
  const installCanceller = appsFlyer.onInstallConversionData(res => {
    // 你的业务逻辑
  });
  const openCanceller = appsFlyer.onAppOpenAttribution(res => {
    // 你的业务逻辑
  });

  return () => {
    // 移除监听器
    installCanceller();
    openCanceller();
  };
});

2. 关闭SDK自动触发事件
   初始化SDK时将onInstallConversionDataListener设为false，避免SDK自动发送onInstallConversionDataLoaded事件。之后可手动调用appsFlyer.getInstallConversionData()获取数据：

appsFlyer.initSdk(
  {
    devKey: 'xxxxxxxx',
    isDebug: true,
    appId: 'xxxxxxx',
    onInstallConversionDataListener: false, // 关闭自动触发
  },
  // ...回调函数
);

3. 调整监听器清理时机
   在清理监听器前，先暂停SDK追踪，避免延迟事件触发警告：

return () => {
  appsFlyer.stopTracking(true); // 暂时停止追踪
  onInstallConversionDataCanceller();
  onAppOpenAttributionCanceller();
  appsFlyer.stopTracking(false); // 业务需要时恢复追踪
};

4. 修复代码中的语法错误
   原代码中使用this.props.navigation是类组件写法，函数组件应直接使用传入的navigation参数，这个错误可能导致逻辑异常，间接影响监听器生命周期：

// 错误写法
// this.props.navigation.navigate('LoadingPage', {entitlementID: res.data.campaign});
// 正确写法
navigation.navigate('LoadingPage', {entitlementID: res.data.campaign});

内容的提问来源于stack exchange，提问作者zacke