How to have no splitview in portrait mode in android?

I was able to create a split view using fragments in landscape mode to maximize the space. So for example, I can search on the left pane and it 开发者_开发问答will show the detailed view on the right pane.

If the user switches to portrait mode during application usage, how can it be implemented in such a way that it is no longer in split view?

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Android has this exact example in their code. You can specify a different layout dependent on the screen orientation. In the code you can perform a check to see what the current orientation is.