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androidandroid-fragmentsandroid-nested-fragmentfragment-lifecycle

Nested fragment lifecycle

I have 4 fragments. I switch among them by using hide/show transactions. One of them may have nested fragments which are added by replace transaction. The issue is that if I add a nested fragment hide main fragment and show it again the onHiddenChanged method of my nested fragment is not called. Why so? How can I determine when my nested fragment become visible?

Solution

  • I also came across the problem you are facing.

    I found that hiding/showing a parent fragment had no effect on the child fragments' visible states, and wouldn't call onHiddenChanged() and would return isVisible() = true always.

    See my answer in another question for my workaround.

    Basically I created my own getIsVisible() function on a BaseFragment which recursively looks through any parents to find it's actual visible state. I am sure you could do something similar with onHiddenChanged() by propagating it to all the child fragments.

    I know this is old, but maybe someone could benefit from this knowledge :)