Upgraded to AppCompat v22.1.0 and now getting IllegalArgumentException: AppCompat does not support the current theme features

android android-appcompat illegalargumentexception
Chris Banes picture Chris Banes · Apr 22, 2015 · Viewed 64.7k times · Source

I've just upgraded my app to use the newly released v22.1.0 AppCompat and I'm now getting the following exception when I open my app.

Caused by: java.lang.IllegalArgumentException: AppCompat does not support the current theme features
        at android.support.v7.app.AppCompatDelegateImplV7.ensureSubDecor(AppCompatDelegateImplV7.java:360)
        at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:246)
        at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:106)

How do I fix it?

Answer

Chris Banes picture Chris Banes · Apr 22, 2015

AppCompat is now more strict on what it expect in theme window flags, more closely matching what you would get from the framework.

The main reason behind this is to support AppCompatDialogs which we were also adding in this release. They make heavy use of the windowNoTitle flag, which AppCompat previously didn't pay much attention to.

So to fix your issue you have two options:

The easy way is to just use Theme.AppCompat.NoActionBar as your parent theme. This will always do the right thing.

If you can't do that though (maybe you need to support action bar and no action bar), you should do the following:

<style name="MyTheme" parent="Theme.AppCompat">
    ...
</style>

<style name="MyTheme.NoActionBar">
    <!-- Both of these are needed -->
    <item name="windowActionBar">false</item>
    <item name="windowNoTitle">true</item>
</style>

You should be back on track now.

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