xamarin - Android Activity LaunchMode SingleTask doesn't trigger MvvmCross ViewModel constructor or Init method -

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in order provide correct button behaviour of android app uses mvvmcross, i've had amend launchmode of particular views singletask. whilst works fine, when 1 of these views used second time onwards, viewmodel constructor , init methods (used in conjuction nav class pass parameters 1 view another) no longer fired. presume behaviour "by design" or "enforced android os" need aware of when placing code in constructors/init methods may need called every time view displayed (e.g. refreshjoblist). fix incidentally, place call required method in onresume method of activity, e.g.:

((jobdetailviewmodel)this.viewmodel).refreshjobphotos();

is there "better way"?

i presume behaviour "by design" or "enforced android os"

if forcing activity singletask created once viewmodel once.

there onnewintent method override , use work out when happens - mvvmcross has tried use in past - it's use has confused developers - mvx keeps out of way in specialised platform-specific area.

when using singletask, please aware of android's own warning:

the other modes — singletask , singleinstance — not appropriate applications, since result in interaction model unfamiliar users , different other applications.

from: http://developer.android.com/guide/topics/manifest/activity-element.html#lmode


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