I am not able to open the file on the android device which is exported from the I-phone device. where Android to android device is working and Android to I-phone also working. In both cases, the user can import files. The only issue with I-phone to android.
I applied this code and reference:- Creating app which opens a custom file extension
<intent-filter android:icon="your_drawable-resource"
android:label="your_string_resource"
android:priority="integer">
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<data android:scheme="file" />
<data android:host="*" />
<data android:pathPattern=".*\.YOUR_CUSTOM_FILE_EXTENSION" />
</intent-filter>
question from:https://stackoverflow.com/questions/65880126/custom-extension-issue-with-android-cross-platforming