android - How to call function of main activity in custom View class? -


so far i've searched, can make onclick listener on custom view achieve such task.

my problem is, don't clicking solve, want call function @ specific operation complete or starts of custom view example.

in xml : 

custom:onmytaskcomplete="mainfunction"  custom:onmytaskstart="mainfunction1"

in main activity there 2 functions called on these operations. i've been searching crazy , couldn't find solution or hints appreciated thanks.


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