FATAL EXCEPTION: main
Process: com.zj.wanandroid, PID: 9135
java.lang.IllegalStateException: You cannot access the NavBackStackEntry's ViewModels until it is added to the NavController's back
at androidx.navigation.NavBackStackEntry.getViewModelStore(NavBackStackEntry.kt:180)
at androidx.lifecycle.ViewModelProvider.(ViewModelProvider.java:114)
at androidx.lifecycle.viewmodel.compose.ViewModelKt.get(ViewModel.kt:80)
at androidx.lifecycle.viewmodel.compose.ViewModelKt.viewModel(ViewModel.kt:72)
at com.zj.wanandroid.ui.page.main.category.stucture.StructurePageKt.StructurePage(StructurePage.kt:117)
at com.zj.wanandroid.ui.page.main.category.CategoryPageKt$CategoryPage$1$1$2.invoke(CategoryPage.kt:65)
at com.zj.wanandroid.ui.page.main.category.CategoryPageKt$CategoryPage$1$1$2.invoke(CategoryPage.kt:63)
at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:135)
at androidx.compose.runtime.internal.ComposableLambdaImpl$invoke$2.invoke(ComposableLambda.jvm.kt:141)
at androidx.compose.runtime.internal.ComposableLambdaImpl$invoke$2.invoke(ComposableLambda.jvm.kt:141)
at androidx.compose.runtime.RecomposeScopeImpl.compose(RecomposeScopeImpl.kt:140)
at androidx.compose.runtime.ComposerImpl.recomposeToGroupEnd(Composer.kt:2156)
at androidx.compose.runtime.ComposerImpl.skipCurrentGroup(Composer.kt:2399)
at androidx.compose.runtime.ComposerImpl$doCompose$2$5.invoke(Composer.kt:2580)
at androidx.compose.runtime.ComposerImpl$doCompose$2$5.invoke(Composer.kt:2566)
at androidx.compose.runtime.SnapshotStateKt.observeDerivedStateRecalculations(SnapshotState.kt:540)
at androidx.compose.runtime.ComposerImpl.doCompose(Composer.kt:2566)
at androidx.compose.runtime.ComposerImpl.recompose$runtime_release(Composer.kt:2542)
at androidx.compose.runtime.CompositionImpl.recompose(Composition.kt:614)
at androidx.compose.runtime.Recomposer.performRecompose(Recomposer.kt:764)
at androidx.compose.runtime.Recomposer.access$performRecompose(Recomposer.kt:103)
at androidx.compose.runtime.Recomposer$runRecomposeAndApplyChanges$2$2.invoke(Recomposer.kt:447)
at androidx.compose.runtime.Recomposer$runRecomposeAndApplyChanges$2$2.invoke(Recomposer.kt:416)
at androidx.compose.ui.platform.AndroidUiFrameClock$withFrameNanos$2$callback$1.doFrame(AndroidUiFrameClock.android.kt:34)
at androidx.compose.ui.platform.AndroidUiDispatcher.performFrameDispatch(AndroidUiDispatcher.android.kt:109)
at androidx.compose.ui.platform.AndroidUiDispatcher.access$performFrameDispatch(AndroidUiDispatcher.android.kt:41)
at androidx.compose.ui.platform.AndroidUiDispatcher$dispatchCallback$1.doFrame(AndroidUiDispatcher.android.kt:69)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1140)
at android.view.Choreographer.doCallbacks(Choreographer.java:946)
at android.view.Choreographer.doFrame(Choreographer.java:870)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:1127)
at android.os.Handler.handleCallback(Handler.java:938)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loopOnce(Looper.java:210)
at android.os.Looper.loop(Looper.java:299)
at android.app.ActivityThread.main(ActivityThread.java:8105)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:556)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1045)
FATAL EXCEPTION: main Process: com.zj.wanandroid, PID: 9135 java.lang.IllegalStateException: You cannot access the NavBackStackEntry's ViewModels until it is added to the NavController's back at androidx.navigation.NavBackStackEntry.getViewModelStore(NavBackStackEntry.kt:180) at androidx.lifecycle.ViewModelProvider.(ViewModelProvider.java:114)
at androidx.lifecycle.viewmodel.compose.ViewModelKt.get(ViewModel.kt:80)
at androidx.lifecycle.viewmodel.compose.ViewModelKt.viewModel(ViewModel.kt:72)
at com.zj.wanandroid.ui.page.main.category.stucture.StructurePageKt.StructurePage(StructurePage.kt:117)
at com.zj.wanandroid.ui.page.main.category.CategoryPageKt$CategoryPage$1$1$2.invoke(CategoryPage.kt:65)
at com.zj.wanandroid.ui.page.main.category.CategoryPageKt$CategoryPage$1$1$2.invoke(CategoryPage.kt:63)
at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:135)
at androidx.compose.runtime.internal.ComposableLambdaImpl$invoke$2.invoke(ComposableLambda.jvm.kt:141)
at androidx.compose.runtime.internal.ComposableLambdaImpl$invoke$2.invoke(ComposableLambda.jvm.kt:141)
at androidx.compose.runtime.RecomposeScopeImpl.compose(RecomposeScopeImpl.kt:140)
at androidx.compose.runtime.ComposerImpl.recomposeToGroupEnd(Composer.kt:2156)
at androidx.compose.runtime.ComposerImpl.skipCurrentGroup(Composer.kt:2399)
at androidx.compose.runtime.ComposerImpl$doCompose$2$5.invoke(Composer.kt:2580)
at androidx.compose.runtime.ComposerImpl$doCompose$2$5.invoke(Composer.kt:2566)
at androidx.compose.runtime.SnapshotStateKt.observeDerivedStateRecalculations(SnapshotState.kt:540)
at androidx.compose.runtime.ComposerImpl.doCompose(Composer.kt:2566)
at androidx.compose.runtime.ComposerImpl.recompose$runtime_release(Composer.kt:2542)
at androidx.compose.runtime.CompositionImpl.recompose(Composition.kt:614)
at androidx.compose.runtime.Recomposer.performRecompose(Recomposer.kt:764)
at androidx.compose.runtime.Recomposer.access$performRecompose(Recomposer.kt:103)
at androidx.compose.runtime.Recomposer$runRecomposeAndApplyChanges$2$2.invoke(Recomposer.kt:447)
at androidx.compose.runtime.Recomposer$runRecomposeAndApplyChanges$2$2.invoke(Recomposer.kt:416)
at androidx.compose.ui.platform.AndroidUiFrameClock$withFrameNanos$2$callback$1.doFrame(AndroidUiFrameClock.android.kt:34)
at androidx.compose.ui.platform.AndroidUiDispatcher.performFrameDispatch(AndroidUiDispatcher.android.kt:109)
at androidx.compose.ui.platform.AndroidUiDispatcher.access$performFrameDispatch(AndroidUiDispatcher.android.kt:41)
at androidx.compose.ui.platform.AndroidUiDispatcher$dispatchCallback$1.doFrame(AndroidUiDispatcher.android.kt:69)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1140)
at android.view.Choreographer.doCallbacks(Choreographer.java:946)
at android.view.Choreographer.doFrame(Choreographer.java:870)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:1127)
at android.os.Handler.handleCallback(Handler.java:938)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loopOnce(Looper.java:210)
at android.os.Looper.loop(Looper.java:299)
at android.app.ActivityThread.main(ActivityThread.java:8105)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:556)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1045)