How to Nest ViewPager in second Fragment

[zengqiang24]

hello ,this is my layout structure:
dragLayout
----- fragment0
--------- scrollview0
------fragment1
---------- button0 button1 botton2
-----------viewPager
--------------fragment2,fragment3,fragment4

button0.1.2 are use to switch the viewPager's fragments.
my issue is that I can't scroll up to fragment0 in viewPager,can you help me?

[zengqiang24]

thanks,I have override the isAtBottom() method,It works.