Prelaunching Xcode 9 simulator to avoid timeout

.travis.yml

@@ -28,23 +28,27 @@ matrix:
 language: objective-c
 cache: cocoapods
 podfile: Example/Podfile
+
 before_install:
-- gem install cocoapods # Since Travis is not always on latest version
-- gem update xcodeproj # https://github.com/CocoaPods/CocoaPods/issues/7835
-- pod install --repo-update --project-directory=Example
-# Grepping destination device udid
-- DESTINATION_UDID=$(instruments -s devices | grep "$DESTINATION \[" | sed -E 's/.*\[([0-9A-F-]+)\].*/\1/g')
-# Prelaunching simulator to avoid timeout https://github.com/travis-ci/travis-ci/issues/6422
-# (not working with osx_image: xcode10 and newer?)
-#- open -a "simulator" --args -CurrentDeviceUDID $DESTINATION_UDID
+ - gem install cocoapods # Since Travis is not always on latest version
+ - gem update xcodeproj # https://github.com/CocoaPods/CocoaPods/issues/7835
+ - pod install --repo-update --project-directory=Example
+ # Grepping destination device udid
+ - DESTINATION_UDID=$(instruments -s devices | grep "$DESTINATION \[" | sed -E 's/.*\[([0-9A-F-]+)\].*/\1/g')
+ # Prelaunching simulator to avoid timeout https://github.com/travis-ci/travis-ci/issues/6422
+ # (not working with osx_image: xcode10 and newer?)
+ - if [ ${SWIFT_VERSION} = "4.0" ]; then
+     open -a Simulator --args -CurrentDeviceUDID $DESTINATION_UDID;
+   fi
+
 script:
-- set -o pipefail && xcodebuild test
+ - set -o pipefail && xcodebuild test
  `` -enableCodeCoverage YES
  `` -workspace Example/CollectionViewCenteredFlowLayout.xcworkspace
  `` -scheme Example
  `` -sdk iphonesimulator
  `` -destination "id=$DESTINATION_UDID"
  `` ONLY_ACTIVE_ARCH=NO
  `` | xcpretty
-- echo $SWIFT_VERSION > .swift-version
-- pod lib lint
+ - echo $SWIFT_VERSION > .swift-version
+ - pod lib lint