IOS兼容

index.js

@@ -1,3 +1,9 @@
-import { NativeModules } from "react-native";
+import { NativeModules, Platform } from "react-native";
 
-export default NativeModules.VersionUpgrade;
+export default {
+  checkVersion(){
+    if(Platform.os === 'android'){
+      NativeModules.VersionUpgrade.checkVersion()
+    }
+  }
+};