[MOD-2356] iOS: Ti.TouchID - Expose "keepAlive" property to properly manage auth-contextlifetime

GitHub Issue	n/a
Type	New Feature
Priority	High
Status	Closed
Resolution	Fixed
Resolution Date	2017-11-10T19:26:34.000+0000
Affected Version/s	n/a
Fix Version/s	Release 7.0.0, Ti.TouchID 2.1.5
Components	TouchID
Labels	n/a
Reporter	Hans Knöchel
Assignee	Hans Knöchel
Created	2017-08-31T14:00:54.000+0000
Updated	2017-11-16T02:48:16.000+0000

Description

As a follow-up of TIMOB-25181, we should expose the keepAlive boolean-property, so iOS devices (especially iOS 8) can terminate the current auth-context properly.

Comments

Hans Knöchel 2017-08-31

PR: https://github.com/appcelerator-modules/ti.touchid/pull/34 Test-case 1/3:

   var TouchID = require("ti.touchid");
   
   var win = Ti.UI.createWindow({
     backgroundColor: '#fff'
   });
   
   var btn = Ti.UI.createButton({
     title: 'Trigger'
   });
   
   TouchID.setAuthenticationPolicy(TouchID.AUTHENTICATION_POLICY_PASSCODE);
   btn.addEventListener('click', function() {
     TouchID.authenticate({
       reason: 'Can we?',
       keepAlive: false,
       callback: function(e) {
         console.log(e);
       }
     });
   });
   
   win.add(btn);
   win.open();

Test-case (2/3):

   var TouchID = require("ti.touchid");
   
   var win = Ti.UI.createWindow({
     backgroundColor: '#fff'
   });
   
   var btn = Ti.UI.createButton({
     title: 'Trigger'
   });
   
   TouchID.setAuthenticationPolicy(TouchID.AUTHENTICATION_POLICY_PASSCODE);
   btn.addEventListener('click', function() {
     TouchID.authenticate({
       reason: 'Can we?',
       callback: function(e) {
         console.log(e);
       }
     });
   });
   
   win.add(btn);
   win.open();

Test-case (3/3):

   var TouchID = require("ti.touchid");
   
   var win = Ti.UI.createWindow({
     backgroundColor: '#fff'
   });
   
   var btn = Ti.UI.createButton({
     title: 'Trigger'
   });
   
   TouchID.setAuthenticationPolicy(TouchID.AUTHENTICATION_POLICY_PASSCODE);
   btn.addEventListener('click', function() {
     TouchID.authenticate({
       reason: 'Can we?',
       callback: function(e) {
         console.log(e);
         TouchID.invalidate();
       }
     });
   });
   
   win.add(btn);
   win.open();

Expected behaviors: - 1) Auth-text get's invalidated, the prompt is shown every time - 2) Auth-text is kept alive, the prompt is shown until invalidated by the system - 3) Auth-text get's invalidated by calling invalidate(), the prompt is shown every time

Abir Mukherjee 2017-11-10

Passed FR and merged.

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