[tbb-bugs] #30214 [Applications/Tor Browser]: TBA - NPE in ChangeOnionAlphaRunnable

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#30214: TBA - NPE in ChangeOnionAlphaRunnable
-------------------------------------------------+-------------------------
 Reporter:  sysrqb                               |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:  new
 Priority:  Medium                               |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-mobile, tbb-8.5-must,            |  Actual Points:
  TorBrowserTeam201904                           |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by sysrqb):

 It seems like `getActivity()` is null here :(

 {{{
  77                  getActivity().runOnUiThread(new Runnable() {
  78                       public void run() {
  79                           setOnionAlphaValue(newAlpha);
  80                       }
  81                  });
 }}}

 This doesn't seem likely during initial startup, but maybe this is
 triggering after selecting the Settings cog/gear? Maybe there's a race
 there?

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30214#comment:1>
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