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Yes, CardinalMobileSDK supports both Objective-C as well as Swift. Code snippets of each programming language can be found in the documentation.

No, CardinalMobileSDK does not use any third-party SDK/Library.

Yes, Cardinal Mobile SDK is available in both .framework and .xcframework format. Follow the Setting up Cardinal Mobile SDK guide to download and integrate using xcframework.

Yes, you should choose Embed & Sign when integrating CardinalMobile.xcframework. It adds a copy of the framework into your final bundle while releasing your application.

The downloaded framework file size is >3MB. Once integrated with the app that has bitcode support, it adds 774KB if the app is built for both x86 and x64 architecture. 

Cardinal Mobile SDK comes with both device and simulator architectures in it, so merchants can develop, test their application in both simulator and device. Unfortunately, AppStore does not allow publishing applications with simulator architectures in it. To publish the app into AppStore developer must remove unused(simulator) architectures from binary, to achieve this add below run script at the end in your build phases.

Note: This is only applicable if when using CardinalMobile.framework (universal binary)

FRAMEWORK_NAME="CardinalMobile" 
find "$PROJECT_DIR" -name '*.framework' -type d | while read -r FRAMEWORK
do
    PATH_COUNT=$(echo "$FRAMEWORK/" | grep -o '/' | wc -l)
    FILE_NAME=$(echo $FRAMEWORK | cut -d '/' -f $PATH_COUNT | cut -d '.' -f 1)
    EXECUTE_FILE="$FRAMEWORK/$FILE_NAME"
    
    if [[ "$EXECUTE_FILE" == *"$FRAMEWORK_NAME"* ]]; then
        echo "Executable framework $EXECUTE_FILE"
        if $(lipo "$FRAMEWORK/$FILE_NAME" -verify_arch x86_64); then
            lipo -remove x86_64 $EXECUTE_FILE -o $EXECUTE_FILE
            lipo -info $EXECUTE_FILE
        fi
        
        if $(lipo "$FRAMEWORK/$FILE_NAME" -verify_arch i386); then
            lipo -remove i386 $EXECUTE_FILE -o $EXECUTE_FILE
            lipo -info $EXECUTE_FILE
        fi
    fi
done

Apple removed arm64 support for simulators with Xcode 12, either remove valid architectures column under user settings or add arm64 to the excluded architectures list, for more information refer to https://developer.apple.com/forums/thread/656509

This error is due to recent changes in Xcode to resolve this follow the steps below: 

Under Build Settings - Navigate to Validate Workspace - Change it to YES (By Default it is NO)

The run script that strips out the unused architecture from the SDK should be at the bottom of all “Build Phases” so that it executes after “Embed Frameworks”.

This is mostly because of the presence of simulator components in CardinalMobileSDK, to resolve this add the above run script that strips out the unused architecture from the SDK and it should be at the bottom of all “Build Phases” so that it executes after “Embed Frameworks”. Also, make sure that you select Embed&Sign in your general settings (It is under Target->Genral→Frameworks, Libraries, and Embedded Content→CardinalMobile.framework choose Embed&Sign).

No, if you are using staging credentials make sure SDK config is set to Staging Environment and switch back to Production Environment when moving to production. SDK is configured to the Production Environment by default.

Yes, you can customize the certain aspect of the Challenge Screen by setting the UICustomization in SDK Config. See iOS UI Customization v2.2.4 for details.

Yes, you can use the custom font file that is registered with the iOS.

Yes, you can set enableDFSync to true in SDK Config to get Setup Completion Handler called after Data Collection is complete. enableDFSync is set to false by default.

JWT might be invalid if the credentials in the JWT like OrgUnitID, APIKey, APIIdentifiers are invalid or the JWT has expired. Also, make sure the credentials in the JWT point to the correct environment that SDK is set to in the config.

By default, no. If you want Setup to be successful only after Device Data collection is complete, then enable DF Sync in the SDK Config.

OnValidated handler of the Setup will be called with the corresponding error message. 

If you start ProcessBin without successful completion of Setup/Init, then ProcessBin cannot be completed. Please check the console log for error details.

If the parameter you passed to the continue, like TransactionId or Payload is invalid then, continue will throw an error.

Make sure the ThreeDSVersion of the lookup response matches with what SDK Supports. SDK does not support 1.0 Payload.

After all initial setup, in continue pass a sample payload of various UI Types to test different UI in Challenge Screens. You can get the sample payload for various UI type from your Client Manager or Implementation Manager.

No. It means the authentication failed based on the data user provided.