如何从 react-native-code-push 解决 android 编译错误“找不到符号”答案

【问题标题】：How to resolve android compile error 'cant find symbol' from react-native-code-push如何从 react-native-code-push 解决 android 编译错误“找不到符号”
【发布时间】：2020-11-10 16:30:38
【问题描述】：

不知道这里有什么问题。在 Microsoft appcenter 上构建/分发时，构建没有问题。我记得在成功构建后与代码推送相关的唯一一件事就是向 build.gradle 添加不同的部署密钥：

buildTypes {
        debug {
            signingConfig signingConfigs.debug
            // Note: CodePush updates should not be tested in Debug mode as they are overriden by the RN packager. However, because CodePush checks for updates in all modes, we must supply a key.
            // specifically left blank in appcenter docs
            resValue "string", "CodePushDeploymentKey", '""'
        }
        releaseStaging {
            resValue "string", "CodePushDeploymentKey",  '"<key>"'

            // Note: It is a good idea to provide matchingFallbacks for the new buildType you create to prevent build issues
            // Add the following line if not already there
            matchingFallbacks = ['release']
        }
        release {
            // Caution! In production, you need to generate your own keystore file.
            // see https://facebook.github.io/react-native/docs/signed-apk-android.
            // signingConfig signingConfigs.release
            minifyEnabled enableProguardInReleaseBuilds
            proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
            resValue "string", "CodePushDeploymentKey", '"<key>"'
        }
    }

现在当我尝试从 android studio 中构建时，我收到此错误：

> Task :react-native-code-push:javaPreCompileDebug UP-TO-DATE

> Task :react-native-code-push:compileDebugJavaWithJavac FAILED
/Users/vorousjames/Desktop/Development/Slide/Slide/node_modules/react-native-code-push/android/app/src/main/java/com/microsoft/codepush/react/CodePush.java:157: error: cannot find symbol
                isLiveReloadEnabled = devInternalSettings.isReloadOnJSChangeEnabled();
                                                         ^
  symbol:   method isReloadOnJSChangeEnabled()
  location: variable devInternalSettings of type DevInternalSettings
/Users/vorousjames/Desktop/Development/Slide/Slide/node_modules/react-native-code-push/android/app/src/main/java/com/microsoft/codepush/react/CodePushNativeModule.java:175: warning: [unchecked] unchecked cast
        List<ReactRootView> mAttachedRootViews = (List<ReactRootView>)mAttachedRootViewsField.get(instanceManager);
                                                                                                 ^
  required: List<ReactRootView>
  found:    Object
1 error
1 warning

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':react-native-code-push:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.

是什么导致了这个问题以及如何解决这个问题？

【问题讨论】：

标签： android react-native react-native-android visual-studio-app-center react-native-code-push

【解决方案1】：

将导入保存在 MainApplication.java

导入 com.microsoft.codepush.react.CodePush；
保留 覆盖 getJSBundleFile 方法。
删除 buildConfigFields 并更新为这种格式

resValue "string",

“reactNativeCodePush_androidDeploymentKey”，'"<INSERT_PRODUCTION_KEY>"'

从strings.xml 中删除密钥（如果已在其中添加）。

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【讨论】：