使用具有不同布局的纵向和横向片段处理活动

Question

I have an Activity with Fragment in it, and it has different layout xml files for landscape and portrait mode.

I try to use onConfigurationChanged() like this:

public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);
    setContentView(R.layout.hdmain);
}

Where hdmain.xml is put in layout-land and layout-port folder. Then I meet the Fragment lifecycle problem:

java.lang.IllegalArgumentException: Binary XML file line #9: Duplicate id 0x7f0c0019, tag null, or parent id 0xffffffff with another fragment for org.sais.hdmeridian.HDMainActivity$TabFragment

It looks like the Fragment is still there, and since I changed the layout of Activity, a new Fragment is created then duplicated.

What's a smart way to avoid this? Or does Android has some better solution to handle this problem?

Answer 1

Have you tried adding the tag android:configChanges="orientation" to your Activity in the Manifest. This prevents the onCreate to be executed on every turn of the devices, and solves most duplicate errors for me.