使用我自己的类使类<unknown>膨胀时出错

Question

我想在UITask.java中加载recyclerView。

我尝试通过View

获取recyclerView的ID

UITask.java

 protected void onProgressUpdate(List... values) {
    View view = LayoutInflater.from(BaseApplication.getContext()).inflate(R.layout.activity_main,null);
    RecyclerView recyclerView = (RecyclerView) view.findViewById(R.id.recycler_view);
    StaggeredGridLayoutManager layoutManager = new StaggeredGridLayoutManager(3,StaggeredGridLayoutManager.VERTICAL);
    recyclerView.setLayoutManager(layoutManager);
    adapter = new photoAdapter(photosList);
    recyclerView.setAdapter(adapter);
}

但它会发现错误：

android.view.InflateException：二进制XML文件行＃9：二进制XML文件行＃9：错误导致类

RecyclerView: No adapter attached; skipping layout
Process: com.yaminet.materialtest, PID: 22856
android.view.InflateException: Binary XML file line #9: Binary XML file               line #9: Error inflating class <unknown>
Caused by: android.view.InflateException: Binary XML file line #9: Error  inflating class <unknown>
Caused by: java.lang.reflect.InvocationTargetException

activity_main.xml中

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">

<android.support.design.widget.CoordinatorLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
            app:popupTheme="@style/ThemeOverlay.AppCompat.Light"/>

    </android.support.design.widget.AppBarLayout>

    <android.support.v7.widget.RecyclerView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/recycler_view"
        android:scrollbars="vertical"
        app:layout_behavior="@string/appbar_scrolling_view_behavior"/>

    <android.support.design.widget.FloatingActionButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        android:id="@+id/fab"
        android:layout_margin="16dp" />

</android.support.design.widget.CoordinatorLayout>

<android.support.design.widget.NavigationView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/nav_view"
    android:layout_gravity="start"
    app:menu="@menu/nav_menu"
    app:headerLayout="@layout/nav_header">

</android.support.design.widget.NavigationView>

</android.support.v4.widget.DrawerLayout>

build.grade

apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    buildToolsVersion "25.0.2"
    defaultConfig {
        applicationId "com.yaminet.materialtest"
        minSdkVersion 20
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:26.+'
    compile 'com.android.support.constraint:constraint-layout:1.0.0-beta4'
    compile 'com.android.support:design:26.+'
    compile 'de.hdodenhof:circleimageview:2.1.0'
    compile 'com.android.support:recyclerview-v7:26.0.+'
    compile 'com.android.support:cardview-v7:26.+'
    compile 'com.github.bumptech.glide:glide:4.0.0'
    testCompile 'junit:junit:4.12'
}

如何在非MainActivity中获取RecyclerView的ID？

提前谢谢。