diff --git a/android/src/main/java/top/jerryyan/RN/A/VersionUpgrade/UpgradeModule.java b/android/src/main/java/top/jerryyan/RN/A/VersionUpgrade/UpgradeModule.java
index 26169e1..b92fa73 100644
--- a/android/src/main/java/top/jerryyan/RN/A/VersionUpgrade/UpgradeModule.java
+++ b/android/src/main/java/top/jerryyan/RN/A/VersionUpgrade/UpgradeModule.java
@@ -22,13 +22,11 @@ public class UpgradeModule extends ReactContextBaseJavaModule {
     private final ReactApplicationContext reactContext;
     private String downloadUrl;
     private String title = "应用更新中";
-    private final Activity activity;
 
 
     public UpgradeModule(ReactApplicationContext reactContext) {
         super(reactContext);
         this.reactContext = reactContext;
-        this.activity = reactContext.getCurrentActivity();
     }
 
     @Override
@@ -57,6 +55,7 @@ public class UpgradeModule extends ReactContextBaseJavaModule {
     }
 
     private void _requestInstallPermission() {
+        Activity activity = reactContext.getCurrentActivity();
         if (activity == null) return;
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
             Uri packageURI = Uri.parse("package:" + activity.getPackageName());
@@ -67,6 +66,7 @@ public class UpgradeModule extends ReactContextBaseJavaModule {
 
     @ReactMethod
     public void startDownload() {
+        Activity activity = reactContext.getCurrentActivity();
         if (activity == null) return;
         if (!this._hasPermissionToInstall()) this._requestInstallPermission();
         DownloadManager downloadManager = (DownloadManager) activity.getSystemService(Context.DOWNLOAD_SERVICE);