Android 12 API 31 启动画面 NullPointerException : Attempt to invoke virtual method 'boolean android. graphics.drawable.Drawable.isProjected()

Question

我正在按照文章在 Android 12 上实现 Splash Screen API
https://developer.android.com/about/versions/12/splash-screen-migration
我使 Splash Screen API 正常工作，但在 Android 8 和 9 上出现崩溃并重新启动 android 系统。
这是代码和日志:
list .xml

<application
    android:name=".App"
    android:allowBackup="false"
    android:label="@string/app_name"
    android:icon="@mipmap/ic_launcher"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:theme="@style/AppTheme">

    <activity
        android:name=".ui.SplashActivity"
        android:screenOrientation="portrait"
        android:theme="@style/AppTheme.Splash"
        android:clearTaskOnLaunch="true"
        android:exported="true">

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

    </activity>

    <activity
       android:name=".ui.MainActivity"/>

</application>

样式.xml

<style name="AppTheme" parent="Theme.MaterialComponents.Light.NoActionBar">
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryVariant">@color/colorPrimaryVariant</item>
    <item name="colorOnPrimary">@color/white</item>
    <item name="colorSecondary">@color/colorSecondary</item>
    <item name="colorOnSecondary">@color/white</item>
    <item name="colorSurface">@color/white</item>
    <item name="colorError">@color/colorError</item>

    <item name="android:statusBarColor">@color/colorBackground</item>
    <item name="android:navigationBarColor">@color/colorBackground</item>
    <item name="android:windowLightStatusBar" tools:ignore="NewApi">true</item>
    <item name="android:windowLightNavigationBar" tools:ignore="NewApi">true</item>

    <item name="android:windowBackground">@color/colorBackground</item>
</style>

<style name="AppTheme.Splash" parent="Theme.SplashScreen">
    <item name="android:windowSplashScreenBackground" tools:ignore="NewApi">@color/colorSecondary</item>
    <item name="postSplashScreenTheme">@style/AppTheme.SplashScreen</item>
</style>

<style name="AppTheme.SplashScreen">
    <item name="android:statusBarColor">@color/colorSecondary</item>
    <item name="android:navigationBarColor">@color/colorSecondary</item>
    <item name="android:windowBackground">@drawable/splash</item>
    <item name="android:windowLightNavigationBar" tools:ignore="NewApi">false</item>
</style>

样式-v31.xml

<style name="AppTheme.Splash" parent="Theme.SplashScreen">
    <item name="android:windowSplashScreenBackground">@color/colorSecondary</item>
    <item name="android:windowSplashScreenAnimatedIcon">@drawable/ic_logo_white</item>
    <item name="postSplashScreenTheme">@style/AppTheme.SplashScreen</item>
</style>

日志

021-08-10 11:10:41.725 3296-3368/? E/AndroidRuntime: !@*** FATAL EXCEPTION IN SYSTEM PROCESS: android.anim
java.lang.NullPointerException: Attempt to invoke virtual method 'boolean android.graphics.drawable.Drawable.isProjected()' on a null object reference
    at android.graphics.drawable.LayerDrawable.isProjected(LayerDrawable.java:417)
    at android.view.View.invalidateInternal(View.java:18121)
    at android.view.View.invalidate(View.java:18070)
    at android.view.View.setFrame(View.java:22656)
    at com.android.internal.policy.DecorView.setFrame(DecorView.java:928)
    at android.view.View.layout(View.java:22506)
    at android.view.ViewGroup.layout(ViewGroup.java:7190)
    at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:3456)
    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2916)
    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1964)
    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:8721)
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:988)
    at android.view.Choreographer.doCallbacks(Choreographer.java:765)
    at android.view.Choreographer.doFrame(Choreographer.java:700)
    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:967)
    at android.os.Handler.handleCallback(Handler.java:873)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:216)
    at android.os.HandlerThread.run(HandlerThread.java:65)
    at com.android.server.ServiceThread.run(ServiceThread.java:44) 
2021-08-10 11:10:41.731 8297-8297/? E/ConfigUpdater: ignoring update request
2021-08-10 11:10:41.748 8297-8297/? E/ConfigUpdater: ignoring update request
2021-08-10 11:10:41.759 8297-8297/? E/ConfigUpdater: ignoring update request
2021-08-10 11:10:41.771 8297-8297/? E/ConfigUpdater: ignoring update request
2021-08-10 11:10:41.776 8297-8297/? E/ConfigUpdater: ignoring update request
2021-08-10 11:10:41.785 8297-8297/? E/ConfigUpdater: ignoring update request
2021-08-10 11:10:41.797 8297-8297/? E/ConfigUpdater: ignoring update request
2021-08-10 11:10:42.041 2848-2872/? E/SurfaceFlinger: Failed to remove layer from mapping - could not find matching layer
2021-08-10 11:10:42.058 2848-4219/? E/SurfaceFlinger: Failed to remove layer from mapping - could not find matching layer
2021-08-10 11:10:42.058 2848-2872/? E/SurfaceFlinger: Failed to remove layer from mapping - could not find matching layer
2021-08-10 11:10:42.064 2848-2872/? E/SurfaceFlinger: Failed to remove layer from mapping - could not find matching layer
2021-08-10 11:10:42.086 4318-4318/? E/IconDB: getIcon exception : android.os.DeadSystemException
2021-08-10 11:10:42.088 3023-3023/? E/vendor.samsung.hardware.biometrics.fingerprint@2.1-service: BiometricsFingerprintDeathRecipient::serviceDied - Fingerprint Sevice died
2021-08-10 11:10:42.089 3781-3781/? E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.google.android.gms.persistent, PID: 3781
    DeadSystemException: The system died; earlier logs will point to the root cause
2021-08-10 11:10:42.089 4365-4365/? E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.samsung.android.providers.context, PID: 4365
    DeadSystemException: The system died; earlier logs will point to the root cause
2021-08-10 11:10:42.092 4318-4318/? E/IconDB: getIcon exception : android.os.DeadSystemException
2021-08-10 11:10:42.092 4318-4474/? E/AndroidRuntime: FATAL EXCEPTION: launcher-loader
    Process: com.sec.android.app.launcher, PID: 4318
    DeadSystemException: The system died; earlier logs will point to the root cause
2021-08-10 11:10:42.094 6898-7502/? E/JavaBinder: *** Uncaught remote exception!  (Exceptions are not yet supported across processes.)
    DeadSystemException: The system died; earlier logs will point to the root cause
2021-08-10 11:10:42.096 4318-4318/? E/IconDB: getIcon exception : android.os.DeadSystemException
2021-08-10 11:10:42.098 4318-4474/? E/DiagMonLog: File exists.
2021-08-10 11:10:42.100 4318-4318/? E/IconDB: getIcon exception : android.os.DeadSystemException
2021-08-10 11:10:42.105 4318-4318/? E/IconDB: getIcon exception : android.os.DeadSystemException
2021-08-10 11:10:42.105 3023-3023/? E/bauth_FPBAuthService: ~FPBAuthService : set_cancel_flags and sleep 200ms
2021-08-10 11:10:42.109 4318-4318/? E/IconDB: getIcon exception : android.os.DeadSystemException
2021-08-10 11:10:42.111 3781-3781/? E/GCore-Chimera-Crash: Hit an exception while processing the UncaughtExceptionHandler:
DeadSystemException: The system died; earlier logs will point to the root cause
DeadSystemException: The system died; earlier logs will point to the root cause
2021-08-10 11:10:42.118 3781-3781/? E/BaseUncaughtHandler: Hit an exception while processing the UncaughtExceptionHandler. Original exception: 
    DeadSystemException: The system died; earlier logs will point to the root cause
2021-08-10 11:10:42.133 4318-4318/? E/DiagMonLog: File exists.
2021-08-10 11:10:42.140 4318-5369/? E/DiagMonLog: File exists.
2021-08-10 11:10:42.156 4781-5358/? E/ExceptionReporter: Unchecked exception happened while running task: bk[SearchService stop]
    DeadSystemException: The system died; earlier logs will point to the root cause
2021-08-10 11:10:42.169 4781-5358/? E/A: Encountered uncaught exception.
    DeadSystemException: The system died; earlier logs will point to the root cause
2021-08-10 11:10:42.243 7490-7490/? E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.android.vending, PID: 7490
    DeadSystemException: The system died; earlier logs will point to the root cause
2021-08-10 11:10:42.251 4781-4781/? E/ClientLoggingReceiver: Logging to Clearcut failed.
    com.google.android.gms.common.api.n: 8: 
        at com.google.android.libraries.s.a.a(SourceFile:7)
        at com.google.android.gms.common.api.internal.t.handleMessage(SourceFile:6)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at com.google.android.gms.h.c.c.c.b(SourceFile:1)
        at com.google.android.gms.h.c.c.c.dispatchMessage(SourceFile:1)
        at android.os.Looper.loop(Looper.java:216)
        at android.app.ActivityThread.main(ActivityThread.java:7266)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:975)
2021-08-10 11:10:42.252 4781-4781/? E/ClientLoggingReceiver: Logging to Clearcut failed.
    com.google.android.gms.common.api.n: 20: The connection to Google Play services was lost due to service disconnection. Last reason for disconnect: Timing out service connection.
        at com.google.android.libraries.s.a.a(SourceFile:7)
        at com.google.android.gms.common.api.internal.t.handleMessage(SourceFile:6)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at com.google.android.gms.h.c.c.c.b(SourceFile:1)
        at com.google.android.gms.h.c.c.c.dispatchMessage(SourceFile:1)
        at android.os.Looper.loop(Looper.java:216)
        at android.app.ActivityThread.main(ActivityThread.java:7266)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:975)
2021-08-10 11:10:42.253 4781-4781/? E/ClientLoggingReceiver: Logging to Clearcut failed.
    com.google.android.gms.common.api.n: 20: The connection to Google Play services was lost due to service disconnection. Last reason for disconnect: Timing out service connection.
        at com.google.android.libraries.s.a.a(SourceFile:7)
        at com.google.android.gms.common.api.internal.t.handleMessage(SourceFile:6)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at com.google.android.gms.h.c.c.c.b(SourceFile:1)
        at com.google.android.gms.h.c.c.c.dispatchMessage(SourceFile:1)
        at android.os.Looper.loop(Looper.java:216)
        at android.app.ActivityThread.main(ActivityThread.java:7266)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:975)
2021-08-10 11:10:42.275 4781-4927/? E/AndroidRuntime: FATAL EXCEPTION: GoogleApiHandler
    Process: com.google.android.googlequicksearchbox:search, PID: 4781
    DeadSystemException: The system died; earlier logs will point to the root cause
2021-08-10 11:10:42.275 4781-4927/? E/A: Encountered uncaught exception.
    DeadSystemException: The system died; earlier logs will point to the root cause
2021-08-10 11:10:42.317 3023-3023/? E/TLC_BAUTH:   *****************************
2021-08-10 11:10:42.317 3023-3023/? E/TLC_BAUTH:   *** ERROR: TZ Session is not opened properly - Ignore
2021-08-10 11:10:42.317 3023-3023/? E/TLC_BAUTH:   *** Detected in BAuth_Cancel/1519()
2021-08-10 11:10:42.317 3023-3023/? E/TLC_BAUTH:   *****************************
2021-08-10 11:10:42.317 3023-3023/? E/bauth_FPBAuthService: ~FPBAuthService : BAuth_Cancel Fail
2021-08-10 11:10:42.324 3023-3023/? E/TLC_BAUTH:   *****************************
2021-08-10 11:10:42.324 3023-3023/? E/TLC_BAUTH:   *** ERROR: TZ Session is not opened properly - Ignore
2021-08-10 11:10:42.324 3023-3023/? E/TLC_BAUTH:   *** Detected in BAuth_Control_OP/1620()
2021-08-10 11:10:42.324 3023-3023/? E/TLC_BAUTH:   *****************************
2021-08-10 11:10:42.324 3023-3023/? E/bauth_FPBAuthService: check_opcode func_ret_val error = 29
2021-08-10 11:10:42.324 3023-3023/? E/(FPLOG): DeviceEnableInt 0 8 10 1
2021-08-10 11:10:42.325 3023-3023/? E/(FPLOG): 2.0.36.0 DeviceSetClock 0
2021-08-10 11:10:42.326 3606-3606/? E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.android.systemui, PID: 3606
    DeadSystemException: The system died; earlier logs will point to the root cause
2021-08-10 11:10:42.638 8094-8094/? E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.google.android.apps.tachyon, PID: 8094
    DeadSystemException: The system died; earlier logs will point to the root cause
    
    
    [          1628583042.657  8094: 8094 E/TY_com.google.android.libraries.processinit.finalizer.UncaughtExceptionHandlerProcessIn[005:262][8094] Encountered uncaught exception.
    
    
    [          1628583042.658  8094: 8094 E/TY_com.google.android.libraries.processinit.finalizer.UncaughtExceptionHandlerProcessIn[005:262][8094] java.lang.RuntimeException: android.os.DeadSystemException
    
    
    [          1628583042.658  8094: 8094 E/TY_com.google.android.libraries.processinit.finalizer.UncaughtExceptionHandlerProcessIn[005:262][8094] java.lang.RuntimeException: android.os.DeadSystemException
        at android.app.ContextImpl.unbindService(ContextImpl.java:1786)
        at android.content.ContextWrapper.unbindService(ContextWrapper.java:730)
        at lkb.e(Unknown Source:0)
        at lkb.b(PG:2)
        at ljb.handleMessage(PG:9)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:216)
        at android.app.ActivityThread.main(ActivityThread.java:7266)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:975)
     Caused by: android.os.DeadSystemException
        at android.app.ContextImpl.unbindService(ContextImpl.java:1786) 
        at android.content.ContextWrapper.unbindService(ContextWrapper.java:730) 
        at lkb.e(Unknown Source:0) 
        at lkb.b(PG:2) 
        at ljb.handleMessage(PG:9) 
        at android.os.Handler.dispatchMessage(Handler.java:102) 
        at android.os.Looper.loop(Looper.java:216) 
        at android.app.ActivityThread.main(ActivityThread.java:7266) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:975) 
2021-08-10 11:10:42.693 8035-8073/? E/AndroidRuntime: FATAL EXCEPTION: GoogleApiHandler
    Process: com.google.android.apps.photos, PID: 8035
    DeadSystemException: The system died; earlier logs will point to the root cause
2021-08-10 11:10:44.211 3020-3294/? E/AT_Distributor: HandleResponseOnError: Calling regeistered ErrorCallback(err = 4)
2021-08-10 11:10:44.212 3020-3294/? E/AT_Distributor: RIL RESET!!! reconnect to RIL
2021-08-10 11:10:44.294 3006-3056/? E/storaged: getDiskStats failed with result NOT_SUPPORTED and size 0
2021-08-10 11:10:44.296 8422-8422/? E/IptablesRestoreController: [iptables debug]iptables-restore execute *filter
    :INPUT -
    -F INPUT
    :bw_INPUT -
    -A INPUT -j bw_INPUT
    :fw_INPUT -
    -A INPUT -j fw_INPUT
    :bw_VIDEOCALL_IN -
    -A INPUT -j bw_VIDEOCALL_IN
    COMMIT
2021-08-10 11:10:44.314 8422-8422/? E/IptablesRestoreController: [iptables debug]iptables-restore execute done, res : 0
2021-08-10 11:10:44.314 8422-8422/? E/IptablesRestoreController: [iptables debug]iptables-restore execute *filter
    :FORWARD -
    -F FORWARD
    :oem_fwd -
    -A FORWARD -j oem_fwd
    :fw_FORWARD -
    -A FORWARD -j fw_FORWARD
    :bw_FORWARD -
    -A FORWARD -j bw_FORWARD
    :tetherctrl_FORWARD -
    -A FORWARD -j tetherctrl_FORWARD

Answer 1

我遇到了同样的问题，因为我没有放任何 windowSplashScreenAnimatedIcon对于 API < 31。我们需要一个，我们可以使用默认的一个。
在您的 styles.xml 上文件，编辑如下:

<style name="AppTheme.Splash" parent="Theme.SplashScreen">
    <item name="windowSplashScreenBackground">@color/colorSecondary</item>
    <item name="windowSplashScreenAnimatedIcon">@mipmap/ic_launcher_round</item>
    <item name="postSplashScreenTheme">@style/AppTheme.SplashScreen</item>
</style>

我没有任何 API >= 31 的样式，它似乎以这种方式运行。