错误膨胀类-NestedScrollView-找不到类 [英] Error inflating class - NestedScrollView - class not found
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问题描述
运行Android Studio 2.1.2，Windows 7.
Running Android Studio 2.1.2, Windows 7.
我用NestedScrollView替换了ScrollView，现在我得到
I replaced a ScrollView with a NestedScrollView and now I'm getting
android.view.InflateException:二进制XML文件第2行:错误 膨胀类NestedScrollView
android.view.InflateException: Binary XML file line #2: Error inflating class NestedScrollView
java.lang.ClassNotFoundException:未找到类 路径上的"android.view.NestedScrollView": /data/app/com.assemblyguide.remote-48.apk
java.lang.ClassNotFoundException: Didn't find class "android.view.NestedScrollView" on path: /data/app/com.assemblyguide.remote-48.apk
...当我在该XML文件上调用SetContentView()时.我只有ScrollView时没有得到它.
... when I call SetContentView() on that XML file. I did not get it when I had just a ScrollView.
我尝试清理，并使缓存无效并重建. XML看起来像这样. . .
I've tried cleaning, and invalidating the cache and rebuilding. The XML looks like this . . .
<?xml version="1.0" encoding="utf-8"?>
<NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:orientation="vertical" >
<!-- This linear layout is because the scrollview can have only 1 direct child -->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >
<!-- Relative layout for Workorder -->
<RelativeLayout
android:id="@+id/rellayWorkorder"
android:background="#383838"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"
android:layout_marginBottom="2dp">
<TextView
android:id="@+id/workorderlabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_margin="2dp"
android:gravity="left"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Work Order:"/>
<TextView
android:id="@+id/workorderContent"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_margin="2dp"
android:gravity="right"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="---workorder---"/>
</RelativeLayout>
<!-- Relative layout for Required Time
<FrameLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"></FrameLayout> -->
<RelativeLayout
android:id="@+id/rellayRequiredTime"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"
android:layout_marginBottom="2dp">
<TextView
android:id="@+id/requiredTimelabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_margin="2dp"
android:gravity="left"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Required Time:"/>
<TextView
android:id="@+id/requiredTimeContent"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_margin="2dp"
android:gravity="right"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="--- 00 minutes ---"/>
</RelativeLayout>
<!-- Relative layout for Time remaining -->
<RelativeLayout
android:id="@+id/rellayTimeRemaining"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"
android:layout_marginBottom="2dp">
<TextView
android:id="@+id/timeremaininglabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_margin="2dp"
android:gravity="left"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Time Remaining:"/>
<TextView
android:id="@+id/tviewtimeremainingContent"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_margin="2dp"
android:gravity="right"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="--- 0:00:00---"/>
</RelativeLayout>
<!-- Linear layout for Record Start / Record End buttons -->
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp" >
<Button
android:id="@+id/debulkrecordStart"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:layout_marginTop="6dp"
android:layout_marginRight="4dp"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceMedium"
android:onClick="OnSetRecordStartTimeClick"
android:text="Record Start"/>
<Button
android:id="@+id/debulkrecordEnd"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:layout_marginTop="6dp"
android:layout_marginRight="4dp"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceMedium"
android:onClick="OnSetRecordEndTimeClick"
android:text="Record End"/>
</LinearLayout>
<!-- Relative layout for Vacuum level -->
<RelativeLayout
android:id="@+id/rellayvacuumlevel"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="2dp">
<TextView
android:id="@+id/vaclabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_margin="2dp"
android:gravity="left"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Vacuum Level (inches Hg):"/>
<EditText
android:id="@+id/vacleveledit"
android:layout_width="120dp"
android:layout_height="wrap_content"
android:layout_alignParentRight = "true"
android:layout_margin="2dp"
android:gravity="left"
android:textAppearance="?android:attr/textAppearanceSmall"
android:inputType="text|textCapCharacters"
android:text="vac level"
android:layout_marginRight="2dp"
android:layout_marginTop="2dp"
android:layout_marginBottom="2dp"/>
</RelativeLayout>
<!-- Relative layout for Vac Gauge Equipment # -->
<RelativeLayout
android:id="@+id/rlayvacuumGauge"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="2dp">
<TextView
android:id="@+id/vacgaugelabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_margin="2dp"
android:gravity="left"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Vac Gauge Equipment #:"/>
<EditText
android:id="@+id/vacgaugeedit"
android:layout_width="120dp"
android:layout_height="wrap_content"
android:layout_alignParentRight = "true"
android:layout_margin="2dp"
android:gravity="left"
android:textAppearance="?android:attr/textAppearanceSmall"
android:inputType="text|textCapCharacters"
android:text="equip. #"/>
</RelativeLayout>
<!-- Relative layout for Calibration Due date -->
<RelativeLayout
android:id="@+id/rlaycalibdue"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="2dp">
<TextView
android:id="@+id/calibduelabel"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_margin="2dp"
android:gravity="left"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Calibration Due Date:"/>
<EditText
android:id="@+id/calibdueedit"
android:layout_width="120dp"
android:layout_height="wrap_content"
android:layout_alignParentRight = "true"
android:layout_margin="2dp"
android:gravity="left"
android:textAppearance="?android:attr/textAppearanceSmall"
android:inputType="text|textCapCharacters"
android:text="mm/dd/yyyy"/>
</RelativeLayout>
<CalendarView
android:id="@+id/debulkcalendar"
android:layout_width="300dp"
android:layout_height="250dp"
android:minDate="01/01/2016"
android:maxDate="11/30/2016"
/>
<!-- this linear layout is for the debulk override and done buttons -->
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp" >
<Button
android:id="@+id/debulkOverride"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:layout_marginTop="6dp"
android:layout_marginRight="4dp"
android:onClick="OnResetClick"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Override"/>
<Button
android:id="@+id/debulkDone"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:layout_marginTop="6dp"
android:layout_marginRight="2dp"
android:onClick="onDoneBtnClick"
android:gravity="center"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Done"/>
</LinearLayout>
</LinearLayout>
</NestedScrollView>
此错误是什么意思，我该如何解决?
What does this error mean and how do I fix it?
推荐答案
完整的类名称为android.support.v4.widget.NestedScrollView.用<android.support.v4.widget.NestedScrollView>替换<NestedScrollView>元素，它应该可以正常工作.确保您的build.gradle文件中也有v4支持库.
The full class name is android.support.v4.widget.NestedScrollView. Replace the <NestedScrollView> element with <android.support.v4.widget.NestedScrollView> and it should work fine. Make sure you have the v4 support library in your build.gradle file, too.
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