重要事情说3遍
compose使用穩定版本1.6.8，導航用1.10.2
compose使用穩定版本1.6.8，導航用1.10.2
compose使用穩定版本1.6.8，導航用1.10.2
java.lang.NullPointerException: Attempt to invoke virtual method 'void androidx.compose.ui.graphi...
具体步骤。
拉起app->切换到后台->重新拉起app。
执行完onResume 之后
06-18 10:09:15.611 16830 16830 E AndroidRuntime: FATAL EXCEPTION: main
06-18 10:09:15.611 16830 16830 E AndroidRuntime: Process: xxxxxxxxxxx, PID: 16830
06-18 10:09:15.611 16830 16830 E AndroidRuntime: java.lang.NullPointerException: Attempt to invoke virtual method 'void androidx.compose.ui.graphics.layer.GraphicsLayer.drawForPersistence$ui_graphics_release(androidx.compose.ui.graphics.Canvas)' on a null object reference
06-18 10:09:15.611 16830 16830 E AndroidRuntime: at androidx.compose.ui.graphics.layer.LayerManager.persistLayers(LayerManager.android.kt:106)
06-18 10:09:15.611 16830 16830 E AndroidRuntime: at androidx.compose.ui.graphics.layer.LayerManager.updateLayerPersistence(LayerManager.android.kt:126)
06-18 10:09:15.611 16830 16830 E AndroidRuntime: at androidx.compose.ui.graphics.AndroidGraphicsContext$componentCallback$1$onTrimMemory$1.onPreDraw(AndroidGraphicsContext.android.kt:79)
06-18 10:09:15.611 16830 16830 E AndroidRuntime: at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:1204)
06-18 10:09:15.611 16830 16830 E AndroidRuntime: at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:4663)
06-18 10:09:15.611 16830 16830 E AndroidRuntime: at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:3239)
06-18 10:09:15.611 16830 16830 E AndroidRuntime: at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:11197)
06-18 10:09:15.611 16830 16830 E AndroidRuntime: at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1650)
06-18 10:09:15.611 16830 16830 E AndroidRuntime: at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1659)
06-18 10:09:15.611 16830 16830 E AndroidRuntime: at android.view.Choreographer.doCallbacks(Choreographer.java:1129)
06-18 10:09:15.611 16830 16830 E AndroidRuntime: at android.view.Choreographer.doFrame(Choreographer.java:1055)
06-18 10:09:15.611 16830 16830 E AndroidRuntime: at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:1622)
06-18 10:09:15.611 16830 16830 E AndroidRuntime: at android.os.Handler.handleCallback(Handler.java:958)
06-18 10:09:15.611 16830 16830 E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:99)
06-18 10:09:15.611 16830 16830 E AndroidRuntime: at android.os.Looper.loopOnce(Looper.java:230)
06-18 10:09:15.611 16830 16830 E AndroidRuntime: at android.os.Looper.loop(Looper.java:319)
06-18 10:09:15.611 16830 16830 E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:8893)
06-18 10:09:15.611 16830 16830 E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method)
06-18 10:09:15.611 16830 16830 E AndroidRuntime: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:608)
06-18 10:09:15.611 16830 16830 E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1103)
正常的log
2024-06-18 10:41:52.555 17801-17801 ScrollOpti...neManager] XXXXXXXXXXXXX D updateCurrentActivity: mCurrentActivityName=com.gh.worky2B.MainActivity, isOptEnable=true, isAnimAheadEnable=true, isFrameInsertEnable=true, InsertNum=1, isEnabledForScrollChanged=false
2024-06-18 10:41:52.555 17801-17801 Quality XXXXXXXXXXXXX I Skipped: false 0 cost 6.446384 refreshRate 10225729 bit true processName XXXXXXXXXXXXX
2024-06-18 10:41:52.570 17801-17801 BufferQueueConsumer XXXXXXXXXXXXX D [](id:45890000001e,api:0,p:-1,c:17801) connect: controlledByApp=false
2024-06-18 10:41:52.570 17801-17801 IPCThreadState XXXXXXXXXXXXX E attemptIncStrongHandle(43): Not supported
2024-06-18 10:41:52.571 17801-17801 ViewRootImplExtImpl XXXXXXXXXXXXX D setUndequeuedBufferCount: 4
2024-06-18 10:41:52.572 17801-17801 VRI[MainActivity] XXXXXXXXXXXXX D registerCallbacksForSync syncBuffer=false
2024-06-18 10:41:52.597 17801-17876 BLASTBufferQueue XXXXXXXXXXXXX D [VRI[MainActivity]#22](f:0,a:1) acquireNextBufferLocked size=720x1612 mFrameNumber=1 applyTransaction=true mTimestamp=141271283010343(auto) mPendingTransactions.size=0 graphicBufferId=76454712836238 transform=0
2024-06-18 10:41:52.597 17801-17876 VRI[MainActivity] XXXXXXXXXXXXX D Received frameCommittedCallback lastAttemptedDrawFrameNum=1 didProduceBuffer=true syncBuffer=false
2024-06-18 10:41:52.597 17801-17801 VRI[MainActivity] XXXXXXXXXXXXX D draw finished.
2024-06-18 10:41:52.597 17801-17801 ViewRootImplExtImpl XXXXXXXXXXXXX D setMaxDequeuedBufferCount: 2
2024-06-18 10:41:52.670 17801-17801 VRI[MainActivity] XXXXXXXXXXXXX D onFocusEvent true
2024-06-18 10:41:53.672 17801-17801 OplusScrollToTopManager XXXXXXXXXXXXX D XXXXXXXXXXXXX/com.gh.worky2B.MainActivity,This DecorView@2de513b[MainActivity] change focus to true
后续的方案。重新回到 Jetpack Compose version: 1.7.0-beta01
java.lang.NullPointerException: Attempt to read from field 'androidx.compose.ui.node.LayoutNodeLayoutDelegate androidx.compose.ui.node.LayoutNode.layoutDelegate' on a null object reference in method 'void
在连续打开多个应用，再重新拉起应用的时候会导致
同样的问题
issuetracker
06-28 14:13:27.061 8655 8655 E AndroidRuntime: FATAL EXCEPTION: main
06-28 14:13:27.061 8655 8655 E AndroidRuntime: Process:xxxxxxx, PID: 8655
06-28 14:13:27.061 8655 8655 E AndroidRuntime: java.lang.NullPointerException: Attempt to read from field 'androidx.compose.ui.node.LayoutNodeLayoutDelegate androidx.compose.ui.node.LayoutNode.layoutDelegate' on a null object reference in method 'void androidx.compose.ui.node.LayoutNode.onChildRemoved(androidx.compose.ui.node.LayoutNode)'
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at androidx.compose.ui.node.LayoutNode.onChildRemoved(LayoutNode.kt:363)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at androidx.compose.ui.node.LayoutNode.removeAt$ui_release(LayoutNode.kt:340)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at androidx.compose.ui.node.UiApplier.remove(UiApplier.android.kt:35)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at androidx.compose.runtime.changelist.Operation$RemoveNode.execute(Operation.kt:468)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at androidx.compose.runtime.changelist.Operations.executeAndFlushAllPendingOperations(Operations.kt:309)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at androidx.compose.runtime.changelist.ChangeList.executeAndFlushAllPendingChanges(ChangeList.kt:81)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at androidx.compose.runtime.CompositionImpl.applyChangesInLocked(Composition.kt:984)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at androidx.compose.runtime.CompositionImpl.applyChanges(Composition.kt:1013)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at androidx.compose.runtime.Recomposer$runRecomposeAndApplyChanges$2$1.invoke(Recomposer.kt:678)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at androidx.compose.runtime.Recomposer$runRecomposeAndApplyChanges$2$1.invoke(Recomposer.kt:578)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at androidx.compose.ui.platform.AndroidUiFrameClock$withFrameNanos$2$callback$1.doFrame(AndroidUiFrameClock.android.kt:41)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at androidx.compose.ui.platform.AndroidUiDispatcher.performFrameDispatch(AndroidUiDispatcher.android.kt:109)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at androidx.compose.ui.platform.AndroidUiDispatcher.access$performFrameDispatch(AndroidUiDispatcher.android.kt:41)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at androidx.compose.ui.platform.AndroidUiDispatcher$dispatchCallback$1.doFrame(AndroidUiDispatcher.android.kt:69)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1542)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1553)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at android.view.Choreographer.doCallbacks(Choreographer.java:1109)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at android.view.Choreographer.doFrame(Choreographer.java:984)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:1527)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at android.os.Handler.handleCallback(Handler.java:958)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:99)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at android.os.Looper.loopOnce(Looper.java:257)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at android.os.Looper.loop(Looper.java:368)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:8826)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:572)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1049)
06-28 14:13:27.061 8655 8655 E AndroidRuntime: Suppressed: kotlinx.coroutines.internal.DiagnosticCoroutineContextException: [androidx.compose.runtime.PausableMonotonicFrameClock@e06fb21, androidx.compose.ui.platform.MotionDurationScaleImpl@6032b46, StandaloneCoroutine{Cancelling}@4acf107, AndroidUiDispatcher@17cf234]
同樣的compose使用穩定版本1.6.8，同步的導航也使用穩定的1.10.2
