React Native implements hot updates and automatic signature packaging function

...
// 1. Import the plugin class.
import ;
 
public class MainApplication extends Application implements ReactApplication {
 
  private final ReactNativeHost mReactNativeHost = new ReactNativeHost(this) {
    ...
 
    // 2. Override the getJSBundleFile method in order to let
    // the CodePush runtime determine where to get the JS
    // bundle location from on each app start
    @Override
    protected String getJSBundleFile() {
      return ();
    }
  // Where manual link needs to be modified, automatic link should not be modified.      @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:
   // (new MyReactNativePackage());
   (new CodePush(getResources().getString(),
     getApplicationContext(), ,
     getResources().getString(.reactNativeCodePush_androidServerURL)));
   return packages;
  }
  };
}
 
//CodePushDeploymentKey corresponding to the name of the Deployment key in//reactNativeCodePush_androidServerURLCorresponding to the hot update service address insidename

...
apply from: "../../node_modules/react-native/"
apply from: "../../node_modules/react-native-code-push/android/"
...
 
dependencies {
  implementation project(':react-native-code-push') //It is best to add it manually, otherwise there may be pitfalls  implementation fileTree(dir: "libs", include: ["*.jar"])
  ....
}
....

 STACK TRACE AND/OR SCREENSHOTS
 
:app:compileDebugJavaWithJavac - is not incremental (. outputs have changed, no previous execution, etc.).
C:\Stock Api\stock_app\android\app\src\main\java\com\stock_app\:6: error: package  does not exist
import ;
                  ^
C:\Stock Api\stock_app\android\app\src\main\java\com\stock_app\:23: error: cannot find symbol
    return ();
        ^
 symbol: variable CodePush
C:\Stock Api\stock_app\android\app\src\main\java\com\stock_app\:35: error: cannot find symbol
      new CodePush(null, getApplicationContext(), ),
        ^
 symbol: class CodePush
3 errors
:app:compileDebugJavaWithJavac FAILED
 
FAILURE: Build failed with an exception.
 
* What went wrong:
Execution failed for task ':app:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.

 = {
  dependencies: {
    'react-native-code-push': {
      platforms: {
        android: null, // disable Android platform, other platforms will still autolink
      },
    },
  },
};

import React,{ Component } from 'react';
import Root from './src/inner';
import configureStore from './src/inner/store';
import UpdateDialog from './src/common/components/updateDialog'
import CodePush from "react-native-code-push";
 
const { persistor, store } = configureStore();
 
 
class App extends Component {
 
 state = {
 
  visitDialog: false,
  current: 0,
  total: 100
 }
 
 
 
 componentDidMount() {
  ({
   //Installation mode   //ON_NEXT_RESUME Next time you restore to the foreground   //ON_NEXT_RESTART The next time you restart   //IMMEDIATE Update now   installMode: ,
   //Dialogue   updateDialog: {
    // Whether to display the update description    appendReleaseDescription: true,
    //Update the prefix of the description.  Default is "Description"    descriptionPrefix: "Update content:",
    //Forced update button text, default is continue    mandatoryContinueButtonLabel: "Update now",
    //Information during forced update. The default is "An update is available that must be installed."    mandatoryUpdateMessage: "It must be updated to use",
    //When the button text is not forced to update, the default is "ignore"    optionalIgnoreButtonLabel: 'Later',
    //Confirm button text when not forced to update. Default is "Install"    optionalInstallButtonLabel: 'Background update',
    //When not forced update, the updated message text is checked    optionalUpdateMessage: 'There is a new version, is it updated?  ',
    //Title of Alert window    title: 'Update prompt'
   },
  },
   (status) => {
    (status, 'status')
    if (status == 7) {
     ({ visitDialog: true })
    }
   },
   (progress) => {
    let receivedBytes =  / 1024 / 1024;
    let totalBytes =  / 1024 / 1024;
    ({
     current: receivedBytes,
     total: totalBytes
    })
    if (receivedBytes === totalBytes) {
     setTimeout(() => {
      ({ visitDialog: false })
     }, 1000)
    }
    (progress, 'progress')
   }
  );
 }
 
 render() {
  (, 'visitDialog');
  return (
   <>
    <Root store={store} persistor={persistor} />
    { && <UpdateDialog
     title={ ===  ? 'Completed' : 'Downloading update file'}
     describe={ ===  ? 'Welcome' : 'Please wait'}
     current={} total={}></UpdateDialog>}
   </>
  )
 }
};
 
let codePushOptions = {
 //Set the frequency of checking updates //ON_APP_RESUME APP is restored to the foreground //ON_APP_START When the APP is turned on //MANUAL Manual inspection checkFrequency: .ON_APP_START
};
 
export default CodePush(codePushOptions)(App);

=true
=true
MYAPP_RELEASE_STORE_FILE= //The generated signature keyMYAPP_RELEASE_KEY_ALIAS=ydh //AliasMYAPP_RELEASE_STORE_PASSWORD=Password set when signing
MYAPP_RELEASE_KEY_PASSWORD=Password set when signing

  signingConfigs {
    debug {
      ...
    }
 
    release {
      if (('MYAPP_RELEASE_STORE_FILE')) {
        storeFile file(MYAPP_RELEASE_STORE_FILE)
        storePassword MYAPP_RELEASE_STORE_PASSWORD
        keyAlias MYAPP_RELEASE_KEY_ALIAS
        keyPassword MYAPP_RELEASE_KEY_PASSWORD
      }
    }
  }