在 FloatingActionButton 上设置 id 时引发 InflateException答案

【问题标题】：InflateException thrown when setting id on a FloatingActionButton在 FloatingActionButton 上设置 id 时引发 InflateException
【发布时间】：2016-08-04 20:41:48
【问题描述】：

我的主要活动中添加了一个浮动操作按钮控件：

<?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:fitsSystemWindows="true">
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:minHeight="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
            app:popupTheme="@style/ThemeOverlay.AppCompat.Light"/>
        <android.support.design.widget.FloatingActionButton
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="bottom|right"
            android:layout_marginRight="@dimen/main_fab_margin"
            android:layout_marginBottom="@dimen/main_fab_margin"
            android:layout_alignParentBottom="true"
            android:layout_alignParentRight="true"
            android:src="@drawable/ic_main_fab"
            app:fabSize="normal"
            app:backgroundTint="@color/color_primary"
            app:elevation="@dimen/main_fab_elevation"/>
    </RelativeLayout>

    <!-- Pull-out navigation drawer (a.k.a hamburger menu) -->
    <android.support.design.widget.NavigationView
        android:id="@+id/navigation_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        app:menu="@menu/navigationmenu"
        app:headerLayout="@layout/drawerheader" />

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

这会引发 InflateException，如下所示：

Android.Views.InflateException: Binary XML file line #17: Binary XML file line #17: Error inflating class android.support.design.internal.NavigationMenuItemView

浮动操作按钮是RelativeLayout 的子项，而RelativeLayout 是android.support.v4.widget.DrawerLayout 的子项。

现在奇怪的部分，当我删除时

android:id="@+id/main_fab"

从上面的代码来看，一切正常。

我不知道是什么原因造成的。我真的需要为按钮设置一个 id，以便我可以控制代码隐藏中的点击。

有什么想法吗？

更新

堆栈跟踪：

Unhandled Exception:

Android.Views.InflateException: Binary XML file line #17: Binary XML file line #17: Error inflating class android.support.design.internal.NavigationMenuItemView

08-04 16:49:39.952 E/AndroidRuntime(16025): FATAL EXCEPTION: main
08-04 16:49:39.952 E/AndroidRuntime(16025): Process: RA16mobile.RA16mobile, PID: 16025
08-04 16:49:39.952 E/AndroidRuntime(16025): android.view.InflateException: Binary XML file line #17: Binary XML file line #17: Error inflating class android.support.design.internal.NavigationMenuItemView
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.LayoutInflater.inflate(LayoutInflater.java:539)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.support.design.internal.NavigationMenuPresenter$NormalViewHolder.<init>(NavigationMenuPresenter.java:278)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.support.design.internal.NavigationMenuPresenter$NavigationMenuAdapter.onCreateViewHolder(NavigationMenuPresenter.java:379)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.support.design.internal.NavigationMenuPresenter$NavigationMenuAdapter.onCreateViewHolder(NavigationMenuPresenter.java:328)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.support.v7.widget.RecyclerView$Adapter.createViewHolder(RecyclerView.java:5482)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4707)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4617)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:1994)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1390)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1353)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:574)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3028)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:2906)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3283)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.View.layout(View.java:16646)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.ViewGroup.layout(ViewGroup.java:5440)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.View.layout(View.java:16646)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.ViewGroup.layout(ViewGroup.java:5440)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.support.v4.widget.DrawerLayout.onLayout(DrawerLayout.java:1211)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.View.layout(View.java:16646)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.ViewGroup.layout(ViewGroup.java:5440)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.View.layout(View.java:16646)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.ViewGroup.layout(ViewGroup.java:5440)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1743)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1586)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.widget.LinearLayout.onLayout(LinearLayout.java:1495)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.View.layout(View.java:16646)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.ViewGroup.layout(ViewGroup.java:5440)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.View.layout(View.java:16646)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.ViewGroup.layout(ViewGroup.java:5440)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1743)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1586)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.widget.LinearLayout.onLayout(LinearLayout.java:1495)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.View.layout(View.java:16646)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.ViewGroup.layout(ViewGroup.java:5440)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.widget.FrameLayout.layoutChildren(FrameLayout.java:336)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.widget.FrameLayout.onLayout(FrameLayout.java:273)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at com.android.internal.policy.PhoneWindow$DecorView.onLayout(PhoneWindow.java:2678)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.View.layout(View.java:16646)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.ViewGroup.layout(ViewGroup.java:5440)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2183)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1943)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1119)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6060)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.Choreographer$CallbackRecord.run(Choreographer.java:858)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.Choreographer.doCallbacks(Choreographer.java:670)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.Choreographer.doFrame(Choreographer.java:606)
08-04 16:49:39.952 E/AndroidRuntime(16025):     at android.view.Choreograp
08-04 16:49:40.000 I/Process (16025): Sending signal. PID: 16025 SIG: 9

【问题讨论】：

你能显示完整的xml吗？
奇怪的是，您从 FloatingActionButton 的属性中获得了该异常。你的Activity 超类是什么？你应该使用AppCompatActivity。
主要活动确实继承自 AppCompatActivity，而不是 Activity。已发布完整的 XML。
嗯，对我来说，异常指向@menu/navigationmenu
尝试核对您的 obj/bin 文件夹，重新启动您的 IDE，然后进行干净的部署。（即adb uninstall packagename）。关于Error inflating class android.support.design.internal.NavigationMenuItemView，我经常看到这个问题，它似乎已经解决了。

标签： c# android xamarin material-design inflate-exception

【解决方案1】：

尝试核对您的obj/bin 文件夹，重新启动您的 IDE，然后进行干净的部署。（即adb uninstall packagename）。关于Error inflating class android.support.design.internal.NavigationMenuItemView，我经常看到这个问题，它似乎已经解决了。

我最初认为这是一个特定于 Xamarin 的错误，直到我在 Native Java 中也遇到了它。基本上遵循相同的步骤可以解决这两个领域的问题。

【讨论】：