WKWebView disables web app UI when soft keyboard is open on iOS9

[deadlyfingers]

UI only becomes active once soft keyboard is closed again. (Note: Seems not to happen on iPhone 6+, but happens on iPhone 5 and 6)

Might have to revert back to UIWebView which behaves more consistently across all devices / iOS versions...

Need to create a POC to recreate then submit bug to WKWebView engine issues: https://issues.apache.org/jira/browse/CB/component/12327630/?selectedTab=com.atlassian.jira.jira-projects-plugin:component-summary-panel

[deadlyfingers]

After creating a sample Cordova project using the new iOS platform and plugins I have discovered a number of bugs depending on what config you use.

Test project setup:

cordova create WebView net.deadlyfingers.WebView WebView
cd WebView
cordova platform add ios@4.0.1

cordova plugin add cordova-plugin-wkwebview-engine@1.0.1 --save
cordova plugin add cordova-plugin-keyboard@1.1.3 --save

Summary of issues found from my tests and to be reported if not known:

• 'KeyboardShrinksView' preference causes issues with scrolling and it also ignores or blocks UI clicks outside the soft keyboard therefore making it harder to stop editing text and dismiss the keyboard. (Or this could just be the iOS webview click delay playing up...)
• 'KeyboardDisplayRequiresUserAction' doesn't appear to enable javascript focus() as expected. The keyboard appears and disappears in a flash.
• 'textarea' marked with 'readonly' attribute pops up the iOS keyboard accessory view which shouldn't happen.

[deadlyfingers]

Submitted bugs to Cordova issue tracker (tested using iOS 9.2):

• WKWebView autofocus bug: https://issues.apache.org/jira/browse/CB-10376
• WKWebView readonly bug: https://issues.apache.org/jira/browse/CB-10366

[deadlyfingers]

The 'KeyboardShrinksView' blocking clicks issue must be something in iframe app as I'm unable to recreate using a vanilla Cordova WKWebView engine project. One option is to set the Cordova config preference to use "CDVUIWebViewEngine" which will has less issues.

• https://cordova.apache.org/docs/en/5.4.0/guide/platforms/ios/config.html