[TIMOB-1490] Android: Race condition of Window focus/blur

GitHub Issue	n/a
Type	Bug
Priority	Low
Status	Closed
Resolution	Invalid
Resolution Date	2012-08-20T15:45:55.000+0000
Affected Version/s	n/a
Fix Version/s	n/a
Components	Android
Labels	android, defect
Reporter	Don Thorp
Assignee	Neeraj Gupta
Created	2011-04-15T02:54:11.000+0000
Updated	2017-03-22T20:51:06.000+0000

Description

Not sure how to address this one. It appears that the Android OS doesn't guarantee when it will call events on activities. For example it's possible for a hidden activity to have onStart called before onStop. Or it at least appears that way. It doesn't provide. Therefore it's not possible to successfully destroy a single resource like MapView.

See http://developer.appcelerator.com/helpdesk/view/30371">Helpdesk 30371

Comments

Keith Gable 2011-12-13 I have this problem. Focus and blur seem to only fire when the window is initially opened/closed, and not after that point. I have to synthesize focus/blur events like so:

   open: function(params) {
   	var self = this;
   	self.win.open(params);
   
   	if (Ti.Platform.name == "android") {
   		self.focus(); // run focus callback to workaround Android/Ti issue.
   	}
   },
   close: function(params) {
   	var self = this;
   
   	if (Ti.Platform.name == "android") {
   		self.blur(); // run blur callback to workaround Android/Ti issue.
   	}
   
   	self.win.close(params);
   }

Note that these functions are members of a map/object, which is why their syntax is sort of weird.

Junaid Younus 2012-08-20 No runnable test code and link doesn't work, ticket marked as invalid.
Lee Morris 2017-03-22 Closing ticket as invalid with reference to the above comments.

JSON Source