viewBinding不起作用

控件id有些多就打算用viewBinding,配置好后原本打算是在MainActivity的onCreate外用的，但不起作用，以为有另外的写法，没想到在onCreate中试也不起作用。我在另外的项目使用正常的啊，是什么原因导致冲突了吗？gradle版本8.0。

viewBinding我有试过删除后退出项目，重新进入再重新装，问题依旧。

之前以为是AndroidManifest的android：name指定了全局函数的原因，尝试删了依旧。

应该发现主要的原因了，与MainActivity对应的activity_main.xml里的id就能直接用，另外的xml

就无法使用，这个要怎么解决.
##androidManifest

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <uses-permission android:name="android.permission.INTERNET" />

    <application
        android:name=".SunnyWeatherApplication"
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.SunnyWeather2"
        tools:targetApi="31">
        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

SunnyWeatherApplication.kt

package com.example.sunnyweather2

import android.annotation.SuppressLint
import android.app.Application
import android.content.Context

class SunnyWeatherApplication : Application() {

    companion object {
        const val TOKEN = "MNqVXy86vYXurQrD"
        @SuppressLint("StaticFieldLeak")
        lateinit var context: Context
    }

    override fun onCreate() {
        super.onCreate()
        context = applicationContext
    }
}

buiid.gradle

plugins {
    id 'com.android.application'
    id 'org.jetbrains.kotlin.android'
}

android {
    namespace 'com.example.sunnyweather2'
    compileSdk 33

    defaultConfig {
        applicationId "com.example.sunnyweather2"
        minSdk 26
        targetSdk 33
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    kotlinOptions {
        jvmTarget = '1.8'
    }
    buildFeatures {
        viewBinding true
    }
}

dependencies {

    implementation 'androidx.core:core-ktx:1.10.0'
    implementation 'androidx.appcompat:appcompat:1.6.1'
    implementation 'com.google.android.material:material:1.9.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
    implementation 'androidx.recyclerview:recyclerview:1.3.0'
    implementation 'androidx.lifecycle:lifecycle-viewmodel:2.6.1'
    implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.6.1'
    implementation 'com.google.android.material:material:1.9.0'
    implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0'
    implementation 'com.squareup.retrofit2:retrofit:2.9.0'
    implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.6.4'
    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.6.4'
    testImplementation 'junit:junit:4.13.2'
    androidTestImplementation 'androidx.test.ext:junit:1.1.5'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.0'
}

left_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="666"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="10dp"/>

</LinearLayout>

mainMativity,到了这里使用binding.buttoin1就爆红了

你这都不是同一个布局文件怎么可能用的了。如果你是通过include引入到main了，那可以通过binging.layoutBinding.button1使用，layoutBinding就是include的id