java - AppCompat does not support the current theme

Question

My app is running fine on Android N, but is crashing at setContentView(R.layout.activity_main) on Android M:

 Caused by: java.lang.IllegalArgumentException: AppCompat does not support the current theme features: { windowActionBar: false, windowActionBarOverlay: false, android:windowIsFloating: false, windowActionModeOverlay: true, windowNoTitle: false }

Whats odd is that I haven't even edited anything to do with my app's theme, and so this error is very odd:

styles.xml:

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>z
    </style>

    <style name="DialogStyle">
        <item name="android:windowFrame">@null</item>
        <item name="android:windowIsFloating">true</item>
        <item name="android:windowContentOverlay">@null</item>
        <item name="android:windowAnimationStyle">@android:style/Animation.Dialog</item>
        <item name="android:windowBackground">@color/textColorPrimary</item>
        <item name="android:windowSoftInputMode">stateUnspecified|adjustPan</item>
        <item name="android:colorBackgroundCacheHint">@null</item>
        <item name="android:textColorPrimary">@color/black</item>
    </style>

</resources>

FATAL EXCEPTION: main Process: com.curlybraceapps.ruchir.rescuer, PID: 20394 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.curlybraceapps.ruchir.rescuer/com.curlybraceapps.ruchir.rescuer.MainActivity}: java.lang.IllegalArgumentException: AppCompat does not support the current theme features: { windowActionBar: false, windowActionBarOverlay: false, android:windowIsFloating: false, windowActionModeOverlay: true, windowNoTitle: false } at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2325) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387) at android.app.ActivityThread.access$800(ActivityThread.java:151) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5254) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698) Caused by: java.lang.IllegalArgumentException: AppCompat does not support the current theme features: { windowActionBar: false, windowActionBarOverlay: false, android:windowIsFloating: false, windowActionModeOverlay: true, windowNoTitle: false } at android.support.v7.app.AppCompatDelegateImplV9.createSubDecor(AppCompatDelegateImplV9.java:474) at android.support.v7.app.AppCompatDelegateImplV9.ensureSubDecor(AppCompatDelegateImplV9.java:328) at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:289) at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140) at com.curlybraceapps.ruchir.rescuer.MainActivity.onCreate(MainActivity.java:152) at android.app.Activity.performCreate(Activity.java:6033) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)? at android.app.ActivityThread.access$800(ActivityThread.java:151)? at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)? at android.os.Handler.dispatchMessage(Handler.java:102)? at android.os.Looper.loop(Looper.java:135)? at android.app.ActivityThread.main(ActivityThread.java:5254)? at java.lang.reflect.Method.invoke(Native Method)? at java.lang.reflect.Method.invoke(Method.java:372)? at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)? at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)

Why is this issue suddenly occurring, even though I haven't changed anything to do with my theme at all?

Answer 1

Changing the parent theme worked for me

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
</style>