Android 12 Splash Screen API not working with Material Component

Question

I've been following the documentation, but unfortunately it doesn't include the adaptation when using Material Component as app overall theme.

<style name="Theme.App" parent="Theme.MaterialComponents.DayNight">
    <!-- Primary brand color. -->
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryVariant">@color/colorPrimaryDark</item>
    <item name="colorOnPrimary">@android:color/white</item>
    <!-- Secondary brand color. -->
    <item name="colorSecondary">@color/colorPrimary</item> <!--Fab color-->
    <item name="colorOnSecondary">@color/colorAccent</item> <!--Fab icon color-->
    <item name="colorSecondaryVariant">@color/colorAccentDark</item>
    <!-- Status bar color. -->
    <item name="android:statusBarColor">?attr/colorPrimaryVariant</item>
    <!-- Customize your theme here. -->
    <!--<item name="tabStyle">@style/AppTabLayout</item>-->
    <!-- The color for all other text including the menu -->
    <item name="android:textColor">@color/colorPrimary</item>
    <item name="android:textColorHighlight">@color/colorAccentDark</item>
    <item name="android:windowAnimationStyle">@style/WindowAnimationTransition</item>

    <item name="checkboxStyle">@style/AppCheckBoxStyle</item>
    <item name="popupMenuBackground">@drawable/popup_bg_rounded</item>
    <item name="materialAlertDialogTheme">@style/AppDialogTheme</item>

    <item name="autoCompleteTextViewStyle">@style/AppCursor</item>

    <item name="overlapAnchor">false</item>
    <item name="android:dropDownVerticalOffset">?attr/actionBarSize</item>

    <item name="android:forceDarkAllowed" tools:targetApi="q">false</item>
</style>

<style name="Theme.App.Starting" parent="Theme.SplashScreen">
        <item name="windowSplashScreenBackground">
            @color/whitePrimaryDark
        </item>
        <item name="postSplashScreenTheme">
            @style/Theme.Cryptonian.NoActionBar
        </item>
    </style>

Android Manifest

    <activity
        android:name=".presentation.MainActivity"
        android:exported="true"
        android:screenOrientation="portrait"
        android:theme="@style/Theme.App.Starting"
        android:windowSoftInputMode="adjustPan">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

It crash with an error

  Caused by: java.lang.IllegalArgumentException: The style on this component requires your app theme to be Theme.AppCompat (or a descendant).

Does anyone face same issue?

Answer 1

The solution is to install the Splash Screen API before calling super.onCreate() and setContentView

Answer 2

You need to change this:

<item name="postSplashScreenTheme">@style/Theme.Cryptonian.NoActionBar</item>

to this:

<item name="postSplashScreenTheme">@style/Theme.App</item>

postSplashScreenTheme requires to get you app theme. after showing splash screen your app theme wi