Android Compose的布局不展示：IllegalStateException: Your activity is not yet attached t

1、问题：Android Compose的布局不展示

查看详细的报错：

java.lang.IllegalStateException: Your activity is not yet attached to the Application instance. You can't request ViewModel before onCreate call.
	at androidx.activity.ComponentActivity.getViewModelStore(ComponentActivity.java:624)
	at com.lyy.lyyandroid.ui.activity.MainComposeActivity$special$$inlined$viewModels$default$2.invoke(ActivityViewModelLazy.kt:85)
	at com.lyy.lyyandroid.ui.activity.MainComposeActivity$special$$inlined$viewModels$default$2.invoke(ActivityViewModelLazy.kt:85)
	at androidx.lifecycle.ViewModelLazy.getValue(ViewModelLazy.kt:48)
	at androidx.lifecycle.ViewModelLazy.getValue(ViewModelLazy.kt:35)
	at com.lyy.lyyandroid.ui.activity.MainComposeActivity.getMainViewModel(MainComposeActivity.kt:27)
	at com.lyy.lyyandroid.ui.activity.MainComposeActivity.Greeting(MainComposeActivity.kt:72)
	at com.lyy.lyyandroid.ui.activity.MainComposeActivity$DefaultPreview$1.invoke(MainComposeActivity.kt:84)
	at com.lyy.lyyandroid.ui.activity.MainComposeActivity$DefaultPreview$1.invoke(MainComposeActivity.kt:83)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:108)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:35)
	at androidx.compose.material.MaterialTheme_androidKt.PlatformMaterialTheme(MaterialTheme.android.kt:23)
	at androidx.compose.material.MaterialThemeKt$MaterialTheme$1$1.invoke(MaterialTheme.kt:82)
	at androidx.compose.material.MaterialThemeKt$MaterialTheme$1$1.invoke(MaterialTheme.kt:81)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:108)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:35)
	at androidx.compose.runtime.CompositionLocalKt.CompositionLocalProvider(CompositionLocal.kt:228)
	at androidx.compose.material.TextKt.ProvideTextStyle(Text.kt:363)
	at androidx.compose.material.MaterialThemeKt$MaterialTheme$1.invoke(MaterialTheme.kt:81)
	at androidx.compose.material.MaterialThemeKt$MaterialTheme$1.invoke(MaterialTheme.kt:80)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:108)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:35)
	at androidx.compose.runtime.CompositionLocalKt.CompositionLocalProvider(CompositionLocal.kt:228)
	at androidx.compose.material.MaterialThemeKt.MaterialTheme(MaterialTheme.kt:72)
	at com.lyy.lyyandroid.ui.theme.ThemeKt.LyyAndroidComposeTheme(Theme.kt:41)
	at com.lyy.lyyandroid.ui.activity.MainComposeActivity.DefaultPreview(MainComposeActivity.kt:83)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
	at androidx.compose.ui.tooling.ComposableInvoker.invokeComposableMethod(ComposableInvoker.kt:163)
	at androidx.compose.ui.tooling.ComposableInvoker.invokeComposable(ComposableInvoker.kt:208)
	at androidx.compose.ui.tooling.ComposeViewAdapter$init$3$1$composable$1.invoke(ComposeViewAdapter.kt:509)
	at androidx.compose.ui.tooling.ComposeViewAdapter$init$3$1$composable$1.invoke(ComposeViewAdapter.kt:507)
	at androidx.compose.ui.tooling.ComposeViewAdapter$init$3$1.invoke(ComposeViewAdapter.kt:544)
	at androidx.compose.ui.tooling.ComposeViewAdapter$init$3$1.invoke(ComposeViewAdapter.kt:502)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:108)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:35)
	at androidx.compose.runtime.CompositionLocalKt.CompositionLocalProvider(CompositionLocal.kt:228)
	at androidx.compose.ui.tooling.InspectableKt.Inspectable(Inspectable.kt:61)
	at androidx.compose.ui.tooling.ComposeViewAdapter$WrapPreview$1.invoke(ComposeViewAdapter.kt:449)
	at androidx.compose.ui.tooling.ComposeViewAdapter$WrapPreview$1.invoke(ComposeViewAdapter.kt:448)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:108)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:35)
	at androidx.compose.runtime.CompositionLocalKt.CompositionLocalProvider(CompositionLocal.kt:228)
	at androidx.compose.ui.tooling.ComposeViewAdapter.WrapPreview(ComposeViewAdapter.kt:443)
	at androidx.compose.ui.tooling.ComposeViewAdapter.access$WrapPreview(ComposeViewAdapter.kt:127)
	at androidx.compose.ui.tooling.ComposeViewAdapter$init$3.invoke(ComposeViewAdapter.kt:502)
	at androidx.compose.ui.tooling.ComposeViewAdapter$init$3.invoke(ComposeViewAdapter.kt:499)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:108)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:35)
	at androidx.compose.ui.platform.ComposeView.Content(ComposeView.android.kt:428)
	at androidx.compose.ui.platform.AbstractComposeView$ensureCompositionCreated$1.invoke(ComposeView.android.kt:252)
	at androidx.compose.ui.platform.AbstractComposeView$ensureCompositionCreated$1.invoke(ComposeView.android.kt:251)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:108)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:35)
	at androidx.compose.runtime.CompositionLocalKt.CompositionLocalProvider(CompositionLocal.kt:228)
	at androidx.compose.ui.platform.CompositionLocalsKt.ProvideCommonCompositionLocals(CompositionLocals.kt:195)
	at androidx.compose.ui.platform.AndroidCompositionLocals_androidKt$ProvideAndroidCompositionLocals$3.invoke(AndroidCompositionLocals.android.kt:119)
	at androidx.compose.ui.platform.AndroidCompositionLocals_androidKt$ProvideAndroidCompositionLocals$3.invoke(AndroidCompositionLocals.android.kt:118)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:108)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:35)
	at androidx.compose.runtime.CompositionLocalKt.CompositionLocalProvider(CompositionLocal.kt:228)
	at androidx.compose.ui.platform.AndroidCompositionLocals_androidKt.ProvideAndroidCompositionLocals(AndroidCompositionLocals.android.kt:110)
	at androidx.compose.ui.platform.WrappedComposition$setContent$1$1$2.invoke(Wrapper.android.kt:158)
	at androidx.compose.ui.platform.WrappedComposition$setContent$1$1$2.invoke(Wrapper.android.kt:157)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:108)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:35)
	at androidx.compose.runtime.CompositionLocalKt.CompositionLocalProvider(CompositionLocal.kt:228)
	at androidx.compose.ui.platform.WrappedComposition$setContent$1$1.invoke(Wrapper.android.kt:157)
	at androidx.compose.ui.platform.WrappedComposition$setContent$1$1.invoke(Wrapper.android.kt:142)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:108)
	at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:35)
	at androidx.compose.runtime.ActualJvm_jvmKt.invokeComposable(ActualJvm.jvm.kt:78)
	at androidx.compose.runtime.ComposerImpl.doCompose(Composer.kt:3340)
	at androidx.compose.runtime.ComposerImpl.composeContent$runtime_release(Composer.kt:3273)
	at androidx.compose.runtime.CompositionImpl.composeContent(Composition.kt:588)
	at androidx.compose.runtime.Recomposer.composeInitial$runtime_release(Recomposer.kt:1013)
	at androidx.compose.runtime.CompositionImpl.setContent(Composition.kt:520)
	at androidx.compose.ui.platform.WrappedComposition$setContent$1.invoke(Wrapper.android.kt:142)
	at androidx.compose.ui.platform.WrappedComposition$setContent$1.invoke(Wrapper.android.kt:133)
	at androidx.compose.ui.platform.AndroidComposeView.setOnViewTreeOwnersAvailable(AndroidComposeView.android.kt:1191)
	at androidx.compose.ui.platform.WrappedComposition.setContent(Wrapper.android.kt:133)
	at androidx.compose.ui.platform.WrappedComposition.onStateChanged(Wrapper.android.kt:183)
	at androidx.lifecycle.LifecycleRegistry$ObserverWithState.dispatchEvent(LifecycleRegistry.kt:314)
	at androidx.lifecycle.LifecycleRegistry.addObserver(LifecycleRegistry.kt:192)
	at androidx.compose.ui.platform.WrappedComposition$setContent$1.invoke(Wrapper.android.kt:140)
	at androidx.compose.ui.platform.WrappedComposition$setContent$1.invoke(Wrapper.android.kt:133)
	at androidx.compose.ui.platform.AndroidComposeView.onAttachedToWindow(AndroidComposeView.android.kt:1266)
	at android.view.View.dispatchAttachedToWindow(View.java:20753)
	at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3490)
	at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3497)
	at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3497)
	at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3497)
	at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3497)
	at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:3497)
	at android.view.AttachInfo_Accessor.setAttachInfo(AttachInfo_Accessor.java:58)
	at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:366)
	at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:436)
	at com.android.tools.idea.layoutlib.LayoutLibrary.createSession(LayoutLibrary.java:121)
	at com.android.tools.idea.rendering.RenderTask.createRenderSession(RenderTask.java:717)
	at com.android.tools.idea.rendering.RenderTask.lambda$inflate$9(RenderTask.java:873)
	at com.android.tools.idea.rendering.RenderExecutor$runAsyncActionWithTimeout$3.run(RenderExecutor.kt:192)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:829)

2、解决：

• 1、怀疑是依赖的版本问题，统一ComponentActivity的版本，不行；
• 2、清除缓存，重新编译都不行；
• 3、通过对比的发现，不要在Greeting()方法中直接写其它代码;
• 4、注释掉Greeting()中其它代码，刷新页面，布局可以展示；

全部代码：

package com.lyy.lyyandroid.ui.activity

import android.os.Bundle
import androidx.activity.compose.setContent
import androidx.activity.viewModels
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.material.Button
import androidx.compose.material.MaterialTheme
import androidx.compose.material.Surface
import androidx.compose.material.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier
import androidx.compose.ui.tooling.preview.Preview
import com.lyy.lyyandroid.base.BaseComposeActivity
import com.lyy.lyyandroid.ui.theme.LyyAndroidComposeTheme
import com.lyy.lyyandroid.ui.viewModel.MainComposeViewModel
import me.hgj.jetpackmvvm.util.LogUtils

/**
 * Android Compose的纯净版
 * 这个是新版本的：  Android+Compose的方式
 */
class MainComposeActivity : BaseComposeActivity<MainComposeViewModel>() {
    val mainViewModel by viewModels<MainComposeViewModel>()


    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            LyyAndroidComposeTheme {
                // A surface container using the 'background' color from the theme
                Surface(
                    modifier = Modifier.fillMaxSize(),
                    color = MaterialTheme.colors.background
                ) {
                    Greeting("Android compose")
                }
            }
        }
    }

    override fun initView(savedInstanceState: Bundle?) {
        showLoading("我在加载中")
    }


    @Composable
    fun Greeting(name: String) {
        val content = remember { mutableStateOf("") }
        Column() {
            Text(text = "Hello $name!")
            Button(onClick = {
                var map = HashMap<String, Any>()
                map.put("userId", "271799263300780034")
                map.put("appCode", "TMS")
                mainViewModel.getListData(this@MainComposeActivity, map)

            }) {
                Text(text = "点击网络请求")
            }

            Text(text = "结果：${content.value}")
        }
        /**
         * 必须注释掉，否则页面不展示
         * 功能：监听返回数据
         */
//        mainViewModel.homeData.observe(this) {
//            content.value = it.toString()
//            LogUtils.debugInfo("页面监听返回数据:${it.toString()}")
//        }
    }


    @Preview(showBackground = true)
    @Composable
    fun DefaultPreview() {
        LyyAndroidComposeTheme {
            Greeting("Android compose")
        }
    }
}