从活动中启动片段

Question

In my MainActivity , I have a viewPager containing two containers "A and B". Both containers are possessed with their own Fragments.

In container B; I again have a viewPager containing multiple fragments.( For example one,two,three,four )

On launch of my app MainActivity gets load with container A's homeFragment.

What I need to do is,For a given condition I have to launch fragment two of container B from onResume of my MainActivity.

What I've able to achieve is , I have successfully redirect to container B's fragment one but couldn't able to redirect towards fragment two from onResume of MainActivity, any help will be appreciate.

Answer 1

如果要使用Intent重定向到片段B，则传递子片段的int位置，然后在片段B侧检查是否有其他意图，并设置当前页面，该页面是通过intent.getIntExtra（）收到的。

Answer 2

如果我理解清楚，您想在打开它时显示它的第二页，如果可以，可以使用mViewPager.setCurrentItem(1, true);

Answer 3

我认为您想设置特定页面..为此，您可以将viewpager设置为：

viewpager.setCurrentItem(item, true);

Answer 4

Certainly,I found a way of achieving this by using static concept. I have declared a static variable inside container B's fragment two,and set its value in onResume of MainActivity.

When onResume calls with given condition it sets static variables value to the required fragment, and in my container B,I have used this value to set setCurrentItem() of B'viewPager.

ps: I know it quite confusing as it seems but not too complex in practice,work fine.