pm_web_screen_example.rb

class HomeScreen < PMWebScreen

  uses_action_bar false
  title "Web View"
  stylesheet HomeScreenStylesheet

  def on_load
    @current_url = 'https://www.tacobell.com'
    open_url(@current_url)
  end

  def add_web_view
    # call open_url to do this
    # SPECIAL NOTE: Must create from activity, not from context (breaks dialogs)
    @webview = Android::Webkit::WebView.new(find.activity)
    append(@webview)
    settings = @webview.settings
    settings.savePassword = true
    settings.saveFormData = true
    settings.javaScriptEnabled = true
    settings.supportZoom = false

    # Make the back button the device go back a screen on the webview
    @back_for_webview = true

    # By default some URLs try to launch a browser. Very unlikely that this is
    # the behavior we'll want in an app.   So we use this to stop
    @webview.webViewClient = MyWebViewClient.new
    @webview.webChromeClient = MyWebChromeClient.new

    accept_cookies

    @webview
  end
end

class MyWebViewClient < Android::Webkit::WebViewClient

  ACTION_VIEW = "android.intent.action.VIEW"

  def shouldOverrideUrlLoading(view, url)
    if url.startsWith("tel:")
      app.launch(tel: url)
    elsif url.startsWith("https://www.google.com/maps")
      app.launch(map: url)
    elsif url.startsWith("mailto:")
      email = url.gsub("mailto:", '')
      app.launch(email: email)
    else
      view.loadUrl(url) if view
    end
    true # when return true, stop loading URL from happening
  end

end

class MyWebChromeClient < Android::Webkit::WebChromeClient

  # does not work for api version 16. 17 should work.
  __annotation__('@android.webkit.JavascriptInterface')
  def onJsAlert(view, url, message, result)
    mp message
    result.confirm
    true
  end

  __annotation__('@android.webkit.JavascriptInterface')
  def onGeolocationPermissionsShowPrompt(origin, callback)
    mp origin
    mp callback
    callback.invoke(origin, true, false)
  end
end