Fragment without a view crashes on configuration change

Question

I have an UI where I need a Fragment to be displayed (with a view) in landscape mode but not in portrait mode. In portrait mode it should still be available but

Answer 1

Have you come up with an answer to this? I was having a similar problem, and managed to come up with a solution. You can easily do what you are attempting as follows:

Create two different layouts one in the layout directory, one in the layout-land directory. The one in the layout-land directory will be used in landscape mode. As a placeholder, where you want your fragment to go, use s FrameLayout element, and id it, say with the id "my_fragment". The layout in the layout directory should not contains any element with that id.

In your onCreate method, use findViewById(R.id.my_fragment) to locate the fragment placeholder. If it exists, you are in landscape mode and should add your fragment (if it does not exist already): add(R.id.my_fragment, new MyFragment, "myFragment). If you get null, you are in portrait mode and should not create the fragment.

Be very careful that you never replace a fragment created using a tag, with one that you create dynamically in your program. A fragment for which isInLayout returns true is a completely different beast, that one for which it returns false. Their lifecycles are entirely different. Replacing one with the other will lead to the dreaded IllegalStateException "Fragment did not create a view" problem.

-blake

Answer 2

Your problem can also be due to not having a lanscape layout for the fragment you are using. You might have one for the portrait and so your program runs fine but when you rotate your device, the OS probably looks for the view in the landscape folder and doesnt find the view so declares it as missing. Check that you have view both in the folder "layout" and "layout-land".