Javascript 错误：getApplication（）在ReactNativeHost中具有受保护的访问权限

直到两天前我才发现这个错误：

> Task :app:compileDebugJavaWithJavac FAILED

Deprecated Gradle features were used in this build, making it incompatible with Gradle 6.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/5.5/userguide/command_line_interface.html#sec:command_line_warnings
224 actionable tasks: 195 executed, 29 up-to-date
Note: /Users/yashatreya/Desktop/realyze/node_modules/@react-native-community/async-storage/android/src/main/java/com/reactnativecommunity/asyncstorage/AsyncStorage
Module.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: /Users/yashatreya/Desktop/realyze/node_modules/@react-native-community/datetimepicker/android/src/main/java/com/reactcommunity/rndatetimepicker/RNDatePickerD
ialogFragment.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Note: /Users/yashatreya/Desktop/realyze/node_modules/react-native-gesture-handler/android/src/main/java/com/swmansion/gesturehandler/react/RNGestureHandlerButtonViewManager.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: /Users/yashatreya/Desktop/realyze/node_modules/react-native-reanimated/android/src/main/java/com/swmansion/reanimated/NodesManager.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: /Users/yashatreya/Desktop/realyze/node_modules/react-native-reanimated/android/src/main/java/com/swmansion/reanimated/NodesManager.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Note: /Users/yashatreya/Desktop/realyze/node_modules/react-native-sound/android/src/main/java/com/zmxv/RNSound/RNSoundModule.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: /Users/yashatreya/Desktop/realyze/node_modules/react-native-svg/android/src/main/java/com/horcrux/svg/TSpanView.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
/Users/yashatreya/Desktop/realyze/android/app/build/generated/rncli/src/main/java/debug/facebook/react/PackageList.java:90: error: getApplication() has protected access in ReactNativeHost
    return this.reactNativeHost.getApplication();
                               ^
1 error

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.

这是我的MainApplication.java

包com.realyze； 导入android.app.Application； 导入android.content.Context； 导入com.facebook.react.PackageList； 导入com.facebook.react.react应用程序； 导入io.expo.EXPORATION.RNCAppearancePackage； 导入com.oblador.vectoricons.vectoricons包； 导入com.facebook.react.ReactNativeHost； 导入com.facebook.react.ReactPackage； 导入com.facebook.soloader.soloader； 导入java.lang.reflect.InvocationTargetException； 导入java.util.List； //多重索引 导入androidx.multidex.multidex应用程序； //RN推送通知 导入com.dieam.reactnativepushnotification.ReactNativePushNotificationPackage； 公共类MainApplication扩展了多索引应用程序实现了该应用程序{ 私有最终反应主机mReactNativeHost= 新的反应主机{ @凌驾 公共布尔getUseDeveloperSupport{ 返回BuildConfig.DEBUG； } @凌驾 受保护的getPackages列表{ @抑制警告不必要的局部变量 List packages=new PackageListthis.getPackages； //无法自动链接但可以在此处手动添加的包，例如： //packages.addnew MyReactNativePackage； 新的反应推送通知包； 退货包裹； } @凌驾 受保护字符串getJSMainModuleName{ 收益指数； } }; @凌驾 公共ReactNativeHost getReactNativeHost{ 返回mReactNativeHost； } @凌驾 创建时的公共无效{ super.onCreate； SoLoader.initthis，/*本机exopackage*/false； initializeFlipperthis；//如果不想启用Flipper，请删除此行 } /** *在本机模板中加载翻转器。 * *@param上下文 */ 私有静态void initializeFlipperContext上下文{ 如果BuildConfig.DEBUG{ 试一试{ /* 我们在这里使用反射来获取初始化Flipper的类， 因为Flipper库在发布模式下不可用 */ Class aClass=Class.forNamecom.facebook.flipper.ReactNativeFlipper； aClass.getMethodinitializeFlipper，Context.class.invokenull，Context； }捕获类NotFounde异常{ e、 打印跟踪； }捕获无此方法异常{ e、 打印跟踪； }捕获非法访问异常e{ e、 打印跟踪； }捕获调用targetException e{ e、 打印跟踪； } } } } 版本：

反应本机：0.61.4

安卓工作室：3.6.1

Gradle插件：3.4.2

我已尝试清除生成缓存，但仍会出现相同的错误

我是一个初学者，我不知道哪里出了问题

非常感谢您的帮助

既然Gradle版本使用了大量缺陷功能，这似乎意味着我们应该检查它们

此时，gradle日志显示了哪些函数因Android studio中的设置而发生偏移，如下所示

Android Studio设置 Android studio>首选项SCMD+，>构建、执行、部署> 编译器>命令行选项>添加-警告模式=全部-堆栈跟踪

运行渐变构建 范例

检查日志后，修改并删除该部分。 MainApplication.java中的注释用于帮助和指导您如何添加无法自动链接的包；因此，如果不支持自动链接，则必须将其添加到软件包列表中，如下所示：

//RN-PushNotification
import com.dieam.reactnativepushnotification.ReactNativePushNotificationPackage;  

public class MainApplication extends MultiDexApplication  implements ReactApplication {

  private final ReactNativeHost mReactNativeHost =
      new ReactNativeHost(this) {
        @Override
        public boolean getUseDeveloperSupport() {
          return BuildConfig.DEBUG;
        }

        @Override
        protected List<ReactPackage> getPackages() {
          @SuppressWarnings("UnnecessaryLocalVariable")
          List<ReactPackage> packages = new PackageList(this).getPackages();
          // Packages that cannot be autolinked yet can be added manually here, for example:

          // Add a new ReactNativePushNotificationPackage to the packages
          // ONLY IF ReactNativePushNotificationPackage does not support auto-linking
          packages.add(new ReactNativePushNotificationPackage());

          return packages;
        }
...

如果它确实支持自动链接，那么您必须删除/反转手动安装步骤，清理项目，并让React Native使用新的RN>=60自动链接系统处理本机链接

//RN-PushNotification
import com.dieam.reactnativepushnotification.ReactNativePushNotificationPackage;  

public class MainApplication extends MultiDexApplication  implements ReactApplication {

  private final ReactNativeHost mReactNativeHost =
      new ReactNativeHost(this) {
        @Override
        public boolean getUseDeveloperSupport() {
          return BuildConfig.DEBUG;
        }

        @Override
        protected List<ReactPackage> getPackages() {
          @SuppressWarnings("UnnecessaryLocalVariable")
          List<ReactPackage> packages = new PackageList(this).getPackages();
          // Packages that cannot be autolinked yet can be added manually here, for example:

          // Add a new ReactNativePushNotificationPackage to the packages
          // ONLY IF ReactNativePushNotificationPackage does not support auto-linking
          packages.add(new ReactNativePushNotificationPackage());

          return packages;
        }
...