android - Tabgroup activity destroy all child activities after Home key pressed -


i have tab-group activity has child activities in each group, problem i'm facing of whenever press home key , app, child activities of group destroyed , app restore main activity. sort of:

main activity -> child 1 -> child 2 -> home key press -> app -> main activity ( children destroyed @ point).

further information, i'm sure not because of lack of memory of machine, no other apps running (android doesn't automatically destroy activities memory). there way prevent this? searching hours still got no answer. great, sorry english, it's not native one


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