错误：找不到符号导入 android.support.v4.app.NotificationManagerCompat

Question

当我运行 cordova build android 命令时，构建失败。我在我的项目中使用 cordova-plugin-firebasex 来自 Google firebase 的 crashlytics。以下是我的构建日志：

任务 :app:compileReleaseJavaWithJavac 失败 39 个可操作的任务：39 个已执行 [01:36:56] 'cordova:compile' 在 29 秒后出错 [01:36:56] 错误：/Users/sbahuguna/DevProjects/mobile-apps/apps/netspend-gpr-android/build/platforms/android/gradlew：命令失败，退出代码 1 错误输出： /Users/sbahuguna/DevProjects/mobile-apps/apps/netspend-gpr-android/build/platforms/android/app/src/main/java/cordova/plugins/Diagnostic_Notifications.java:35：错误：找不到符号 导入 android.support.v4.app.NotificationManagerCompat； ^ 符号：类 NotificationManagerCompat 位置：包android.support.v4.app /Users/sbahuguna/DevProjects/mobile-apps/apps/netspend-gpr-android/build/platforms/android/app/src/main/java/cordova/plugins/Diagnostic.java:57：错误：找不到符号 导入android.support.v4.app.ActivityCompat； ^ 符号：ActivityCompat 类 位置：包android.support.v4.app /Users/sbahuguna/DevProjects/mobile-apps/apps/netspend-gpr-android/build/platforms/android/app/src/main/java/cordova/plugins/Diagnostic_External_Storage.java:28：错误：找不到符号 导入 android.support.v4.os.EnvironmentCompat； ^ 符号：类 EnvironmentCompat 位置：包android.support.v4.os /Users/sbahuguna/DevProjects/mobile-apps/apps/netspend-gpr-android/build/platforms/android/app/src/main/java/org/apache/cordova/camera/CameraLauncher.java:40：错误：包android.support.v4.content 不存在 导入 android.support.v4.content.FileProvider； ^ /Users/sbahuguna/DevProjects/mobile-apps/apps/netspend-gpr-android/build/platforms/android/app/src/main/java/org/apache/cordova/camera/CordovaUri.java:25：错误：包android.support.v4.content 不存在 导入 android.support.v4.content.FileProvider； ^ /Users/sbahuguna/DevProjects/mobile-apps/apps/netspend-gpr-android/build/platforms/android/app/src/main/java/org/apache/cordova/camera/FileProvider.java:21：错误：包android.support.v4.content 不存在 公共类 FileProvider 扩展 android.support.v4.content.FileProvider {} ^ /Users/sbahuguna/DevProjects/mobile-apps/apps/netspend-gpr-android/build/platforms/android/app/src/main/java/de/appplant/cordova/plugin/printer/PrintAdapter.java:31：错误: 包 android.support.annotation 不存在 导入android.support.annotation.NonNull； ^ /Users/sbahuguna/DevProjects/mobile-apps/apps/netspend-gpr-android/build/platforms/android/app/src/main/java/de/appplant/cordova/plugin/printer/PrintAdapter.java:32：错误: 包 android.support.v4.print 不存在 导入 android.support.v4.print.PrintHelper； ^ /Users/sbahuguna/DevProjects/mobile-apps/apps/netspend-gpr-android/build/platforms/android/app/src/main/java/de/appplant/cordova/plugin/printer/PrintAdapter.java:56：错误: 包 PrintHelper 不存在 私人最终@NonNull PrintHelper.OnPrintFinishCallback 回调； ^ /Users/sbahuguna/DevProjects/mobile-apps/apps/netspend-gpr-android/build/platforms/android/app/src/main/java/de/appplant/cordova/plugin/printer/PrintAdapter.java:68：错误: 包 PrintHelper 不存在 @NonNull PrintHelper.OnPrintFinishCallback 回调） ^ /Users/sbahuguna/DevProjects/mobile-apps/apps/netspend-gpr-android/build/platforms/android/app/src/main/java/de/appplant/cordova/plugin/printer/PrintProxy.java:30：错误: 包 android.support.annotation 不存在 导入android.support.annotation.NonNull； ^ /Users/sbahuguna/DevProjects/mobile-apps/apps/netspend-gpr-android/build/platforms/android/app/src/main/java/de/appplant/cordova/plugin/printer/PrintProxy.java:31：错误: 包 android.support.v4.print 不存在 导入android.support.v4.print.PrintHelper；

Answer 1

我遇到了同样的问题，我通过以下链接解决了这个问题。

ionic capacitor build cannot find symbol android.support.v4.app.ActivityCompat

我还用 Android Studio->File->Invalidated Cached / Restart 重新启动了 android studio

Answer 2

尝试在你的android平台下的config.xml文件中添加这个

<preference name="ANDROID_SUPPORT_V4_VERSION" default="27.+"/>
<framework src="com.android.support:supportv4:$ANDROID_SUPPORT_V4_VERSION"/>