无效的图层保存标志-Android 9仅允许ALL_SAVE_FLAGS

Question

当我将targetSdkVersion更新为28时，出现以下错误，该应用程序在以前的版本中完美运行，但在android 9中特别有效，给了我该错误。我看到了几个github链接，其中提到基本书目已更新为6.0.8，我不理解。有人可以告诉我如何解决它。我正在附上我在Android Studio控制台中出现的错误。

java.lang.IllegalArgumentException: Invalid Layer Save Flag - only ALL_SAVE_FLAGS is allowed
        at android.graphics.Canvas.checkValidSaveFlags(Canvas.java:378)
        at android.graphics.Canvas.saveLayer(Canvas.java:455)
        at com.airbnb.lottie.model.layer.BaseLayer.draw(BaseLayer.java:222)
        at com.airbnb.lottie.model.layer.CompositionLayer.drawLayer(CompositionLayer.java:100)
        at com.airbnb.lottie.model.layer.BaseLayer.draw(BaseLayer.java:188)
        at com.airbnb.lottie.LottieDrawable.draw(LottieDrawable.java:300)
        at android.widget.ImageView.onDraw(ImageView.java:1360)
        at android.view.View.draw(View.java:20207)
        at android.view.View.buildDrawingCacheImpl(View.java:19478)
        at android.view.View.buildDrawingCache(View.java:19338)
        at android.view.View.draw(View.java:19927)
        at android.view.ViewGroup.drawChild(ViewGroup.java:4333)
        at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4112)
        at android.view.View.draw(View.java:20210)
        at android.view.View.updateDisplayListIfDirty(View.java:19082)
        at android.view.View.draw(View.java:19935)
        at android.view.ViewGroup.drawChild(ViewGroup.java:4333)
        at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4112)
        at android.support.constraint.ConstraintLayout.dispatchDraw(ConstraintLayout.java:2023)
        at android.view.View.draw(View.java:20210)
        at android.view.View.updateDisplayListIfDirty(View.java:19082)
        at android.view.View.draw(View.java:19935)
        at android.view.ViewGroup.drawChild(ViewGroup.java:4333)
        at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4112)
        at android.view.View.updateDisplayListIfDirty(View.java:19073)
        at android.view.View.draw(View.java:19935)
        at android.view.ViewGroup.drawChild(ViewGroup.java:4333)
        at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4112)
        at android.view.View.updateDisplayListIfDirty(View.java:19073)
        at android.view.View.draw(View.java:19935)
        at android.view.ViewGroup.drawChild(ViewGroup.java:4333)
        at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4112)
        at android.view.View.updateDisplayListIfDirty(View.java:19073)
        at android.view.View.draw(View.java:19935)
        at android.view.ViewGroup.drawChild(ViewGroup.java:4333)
        at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4112)
        at android.view.View.updateDisplayListIfDirty(View.java:19073)
        at android.view.View.draw(View.java:19935)
        at android.view.ViewGroup.drawChild(ViewGroup.java:4333)
        at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4112)
        at android.view.View.draw(View.java:20210)
        at com.android.internal.policy.DecorView.draw(DecorView.java:780)
        at android.view.View.updateDisplayListIfDirty(View.java:19082)
        at android.view.ThreadedRenderer.updateViewTreeDisplayList(ThreadedRenderer.java:686)
        at android.view.ThreadedRenderer.updateRootDisplayList(ThreadedRenderer.java:692)
        at android.view.ThreadedRenderer.draw(ThreadedRenderer.java:801)
        at android.view.ViewRootImpl.draw(ViewRootImpl.java:3311)
        at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:3115)
        at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2484)
        at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1460)
        at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7183)
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:949)
        at android.view.Choreographer.doCallbacks(Choreographer.java:761)
        at android.view.Choreographer.doFrame(Choreographer.java:696)
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:935)
        at android.os.Handler.handleCallback(Handler.java:873)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:193)
        at android.app.ActivityThread.main(ActivityThread.java:6680)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)

Answer 1

我遇到过同样的问题。看来是android 9的问题。通过使用以下方法解决了它：

implementation 'com.airbnb.android:lottie:2.7.0'

希望对您有所帮助。