Question

Hello Stack我收到以下错误：

空显示java.lang.NullPointerException 在com.android.tools.idea.uibuilder.scene.LayoutlibSceneManager.getRenderResult（LayoutlibSceneManager.java:602）在com.android.tools.idea.uibuilder.surface.ScreenViewBase.getResult（ScreenViewBase.java:109）在com.android.tools.idea.uibuilder.surface.ScreenView.getResult（ScreenView.java:30）在com.android.tools.idea.uibuilder.menu.NavigationViewSceneView.getPreferredSize（NavigationViewSceneView.java:64）在com.android.tools.idea.common.surface.SceneView.getPreferredSize（SceneView.java:95）在com.android.tools.idea.uibuilder.scene.LayoutlibSceneManager.createSceneViewsForMenu（LayoutlibSceneManager.java:265）在com.android.tools.idea.uibuilder.scene.LayoutlibSceneManager.doCreateSceneView（LayoutlibSceneManager.java:234）在com.android.tools.idea.common.scene.SceneManager.createSceneView（SceneManager.java:73）在com.android.tools.idea.common.scene.SceneManager。（SceneManager.java:66）在com.android.tools.idea.uibuilder.scene.LayoutlibSceneManager。（LayoutlibSceneManager.java:157）在com.android.tools.idea.uibuilder.surface.NlDesignSurface.createSceneManager（NlDesignSurface.java:145）在com.android.tools.idea.common.surface.DesignSurface.setModel（DesignSurface.java:281）在com.android.tools.idea.common.editor.NlEditorPanel.initNeleModelOnEventDispatchThread（NlEditorPanel.java:143）在com.android.tools.idea.common.editor.NlEditorPanel.lambda $ null $ 4（NlEditorPanel.java:139）在com.intellij.openapi.project.DumbServiceImpl.lambda $ smartInvokeLater $ 7（DumbServiceImpl.java:366）在com.intellij.openapi.application.TransactionGuardImpl $ 2.run（TransactionGuardImpl.java:315）在com.intellij.openapi.application.impl.LaterInvocator $ FlushQueue.runNextEvent（LaterInvocator.java:424）在com.intellij.openapi.application.impl.LaterInvocator $ FlushQueue.run（LaterInvocator.java:407） at java.awt.event.InvocationEvent.dispatch（InvocationEvent.java:311） at java.awt.EventQueue.dispatchEventImpl（EventQueue.java:762） at java.awt.EventQueue.access $ 500（EventQueue.java:98） at java.awt.EventQueue $ 3.run（EventQueue.java:715） at java.awt.EventQueue $ 3.run（EventQueue.java:709） at java.security.AccessController.doPrivileged（Native Method） at java.security.ProtectionDomain $ JavaSecurityAccessImpl.doIntersectionPrivilege（ProtectionDomain.java:80） at java.awt.EventQueue.dispatchEvent（EventQueue.java:732）在com.intellij.ide.IdeEventQueue.defaultDispatchEvent（IdeEventQueue.java:822）在com.intellij.ide.IdeEventQueue._dispatchEvent（IdeEventQueue.java:650）在com.intellij.ide.IdeEventQueue.dispatchEvent（IdeEventQueue.java:366） at java.awt.EventDispatchThread.pumpOneEventForFilters（EventDispatchThread.java:201） at java.awt.EventDispatchThread.pumpEventsForFilter（EventDispatchThread.java:116） at java.awt.EventDispatchThread.pumpEventsForHierarchy（EventDispatchThread.java:105） at java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:101） at java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:93）在java.awt.EventDispatchThread.run（EventDispatchThread.java:82）

我使用以下视图

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

    <group android:checkableBehavior="single">
        <item
            android:id="@+id/nav_home"
            android:icon="@drawable/ic_home_black_24dp"
            android:title="Hoofdmenu" />
        <item
            android:id="@+id/nav_logout"
            android:icon="@drawable/ic_close_black_24dp"
            android:title="Uitloggen" />
        <item
            android:id="@+id/nav_gallery"
            android:icon="@drawable/ic_menu_gallery"
            android:title="Gallery"
            android:visible="false" />
        <item
            android:id="@+id/nav_slideshow"
            android:icon="@drawable/ic_menu_slideshow"
            android:title="Slideshow"
            android:visible="false" />
        <item
            android:id="@+id/nav_manage"
            android:icon="@drawable/ic_menu_manage"
            android:title="Tools"
            android:visible="false" />
    </group>

    <item
        android:title="Communicate"
        android:visible="false">
        <menu>
            <item
                android:id="@+id/nav_share"
                android:icon="@drawable/ic_menu_share"
                android:title="Share" />
            <item
                android:id="@+id/nav_send"
                android:icon="@drawable/ic_menu_send"
                android:title="Send" />
        </menu>
    </item>

</menu>

将我的IDE更新为3.1.2后，我现在在main_drawer活动

上收到此错误

任何帮助都将不胜感激。

修改显然是行

tools:showIn="navigation_view"

崩溃预览

IDE错误Android Studio 3.1.2＆＃34;等待构建完成

0 个答案: