how can i catch event when view added to my window?

Hi friends,

1. When i custom to add container view ( contain more children views in this ) to my window, how can i catch event when view added and shown ? Because when i add this view to my window, its slow and need 3-4 seconds to display. I want show indicator to lock UI ( show indicator before add view and close it when view show).

2. Please tell me why the first of add container view to window take more seconds, this too slow, but the next time, container view add again ( i had remove it before ) to window is fast?

My app run on android device.

Thanks