导航到另一个片段时，嵌套的 ViewPager 片段会冻结一秒钟

Question

My viewPager has 5 fragments. The first fragment itself contains viewPager for tabview (FOLLOWING and FOLLOWERS).

second fragment should get data from the first, make API requests, and display results. But before navigating to the second, it somehow moves to the "FOLLOWERS", waits for a second and only after this navigates to the second fragment. Does anyone know what is the reason for a such behavior?

Answer 1

ViewPager creates one fragment on each side of current tab by default. When you move to the 2nd tab viewpager creates 3rd tab(3rd tab will be in an idle state). From viewpager documentation.

int getOffscreenPageLimit ()

Returns the number of pages that will be retained to either side of the current page in the view hierarchy in an idle state. Defaults to 1.