在 android/app/src/main/java/com/jim/notification/ 路徑，先找到 MainApplication.kt 或 MainApplication.java 檔案。

找到 getPackages()，加入自訂的 ProgressNotificationPackage class

import com.yourpackage.progressnotification.ProgressNotificationPackage

// Inside the getPackages() method:
packages.add(ProgressNotificationPackage())

// MainApplication.kt 檔案

override val reactNativeHost: ReactNativeHost = ReactNativeHostWrapper(
        this,
        object : DefaultReactNativeHost(this) {
          override fun getPackages(): List<ReactPackage> {
            // Packages that cannot be autolinked yet can be added manually here, for example:
            // packages.add(new MyReactNativePackage());
            packages.add(ProgressNotificationPackage())
            return PackageList(this).packages
          }

          override fun getJSMainModuleName(): String = ".expo/.virtual-metro-entry"

          override fun getUseDeveloperSupport(): Boolean = BuildConfig.DEBUG

          override val isNewArchEnabled: Boolean = BuildConfig.IS_NEW_ARCHITECTURE_ENABLED
          override val isHermesEnabled: Boolean = BuildConfig.IS_HERMES_ENABLED
      }
  )

套用模組後，接著要設置 JavaScript 端與 Module 互動，以及畫面按鈕的作動邏輯。