userChoice is undefined

[svarughese91]

I'm submitting a ... (check one with "x"):

• [x] bug report
• [ ] feature request
• [ ] documentation issue

Bug report

Current behavior:

When I try to access if the user has selected a preferred nav app or try to set it I get a undefined error: TypeError: undefined is not an object (evaluating 'this.launchNavigator.appSelection.userChoice')

I pull this info directly from the plugin so not sure why it would be undefined. -->

Expected behavior:

This should be giving me a true or false to see if the user has selected a prefered nav app: this.launchNavigator.appSelection.userChoice.exists((doesExist) => {}) Steps to reproduce:

Environment information

• Cordova CLI version
  • cordova -v 8.0.0
• Cordova platform version
  • cordova platform ls Installed platforms: ios 4.5.4 Available platforms: android ~7.0.0 browser ~5.0.1 osx ~4.0.1 windows ~5.0.0 www ^3.12.0
• Plugins & versions installed in project (including this plugin)
  • cordova plugin ls
• Dev machine OS and version, e.g.
  • OSX
    • sw_vers
  • Windows 10
    • winver

Runtime issue

• Device details

  • iPhone 8 Simulator

• OS details

  • iOS 11.2

• Node JS version

  • node -v v9.2.1

• XCode version 9.4.1

If using an [Ionic Native Typescript wrapper]() for this plugin:

• Ionic environment info

  • ionic info cli packages: (/Users/shawnvarughese/Documents/Test/node_modules)

  @ionic/cli-utils : 1.19.2 ionic (Ionic CLI) : 3.20.0

global packages:

cordova (Cordova CLI) : 7.1.0

local packages:

@ionic/app-scripts : 3.1.8
Cordova Platforms  : ios 4.5.4
Ionic Framework    : ionic-angular 3.9.2

System:

ios-deploy : 1.9.2
Node       : v9.2.1
npm        : 2.15.12
OS         : macOS High Sierra
Xcode      : Xcode 9.4.1 Build version 9F2000

Environment Variables:

ANDROID_HOME : not set

Misc:

backend : pro

• Installed Ionic Native modules and versions
  • npm list | grep "@ionic-native"

[dpa99c]

The userChoice object works fine (see screenshot below) - you can confirm this by building and running the AdvancedExample project in the example repo which makes use of userChoice.

The most likely cause of the error is the scope of this in your code is causing this.launchNavigator to be undefined - you can confirm this by debugging your code while it's running.

[svarughese91]

@dpa99c how would i be able to access launchNavigator without using "this"?

[dpa99c]

Presumably you are using the Ionic Typescript wrapper for this plugin in which case you are not interacting directly with the plugin API.

The Cordova plugin API itself is pure Javascript, so as documented the plugin API is exposed via the global launchnavigator namespace on the window object:

window.launchnavigator....

or

launchnavigator...

[svarughese91]

window['launchnavigator'] works! Thanks so much