无法实例化CollapsingToolBarLayout [英] CollapsingToolBarLayout could not be instantiated
本文介绍了无法实例化CollapsingToolBarLayout的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
在过去的几个月中，我一直在使用折叠工具栏布局没有问题.但是，今天，每当我打开xml文件时，都会弹出此错误.确切的错误显示为:
For the past few months I have been using Collapsing Toolbar Layout with no problem. However today, this error pops up whenever I open the xml file. The exact error reads:
无法实例化以下类: -android.support.design.widget.CollapsingToolbarLayout
The following classes could not be instantiated: - android.support.design.widget.CollapsingToolbarLayout
这是堆栈跟踪:
android.content.res.Resources$NotFoundException
at com.android.layoutlib.bridge.android.BridgeContext.obtainStyledAttributes(BridgeContext.java:656)
at com.android.layoutlib.bridge.android.BridgeContext.obtainStyledAttributes(BridgeContext.java:111)
at android.support.v7.widget.TintTypedArray.obtainStyledAttributes(TintTypedArray.java:55)
at android.support.design.widget.CollapsingTextHelper.setCollapsedTextAppearance(CollapsingTextHelper.java:202)
at android.support.design.widget.CollapsingToolbarLayout.<init>(CollapsingToolbarLayout.java:199)
at android.support.design.widget.CollapsingToolbarLayout.<init>(CollapsingToolbarLayout.java:140)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.jetbrains.android.uipreview.ViewLoader.createNewInstance(ViewLoader.java:465)
at org.jetbrains.android.uipreview.ViewLoader.loadClass(ViewLoader.java:172)
at org.jetbrains.android.uipreview.ViewLoader.loadView(ViewLoader.java:105)
at com.android.tools.idea.rendering.LayoutlibCallbackImpl.loadView(LayoutlibCallbackImpl.java:186)
at android.view.BridgeInflater.loadCustomView(BridgeInflater.java:334)
at android.view.BridgeInflater.loadCustomView(BridgeInflater.java:345)
at android.view.BridgeInflater.createViewFromTag(BridgeInflater.java:245)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:727)
at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:858)
at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:70)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:834)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:821)
at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:861)
at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:70)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:834)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:821)
at android.view.LayoutInflater.inflate(LayoutInflater.java:518)
at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:324)
at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:429)
at com.android.ide.common.rendering.LayoutLibrary.createSession(LayoutLibrary.java:389)
at com.android.tools.idea.rendering.RenderTask$2.compute(RenderTask.java:548)
at com.android.tools.idea.rendering.RenderTask$2.compute(RenderTask.java:533)
at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:966)
at com.android.tools.idea.rendering.RenderTask.createRenderSession(RenderTask.java:533)
at com.android.tools.idea.rendering.RenderTask.lambda$inflate$72(RenderTask.java:659)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
CollapsingToolBarLayout.xml
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/colorPrimary">
<android.support.design.widget.AppBarLayout
android:id="@+id/custom_view1"
android:layout_width="match_parent"
android:layout_height="250dp"
android:background="#FFFFFF"
>
<android.support.design.widget.CollapsingToolbarLayout
android:id="@+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:collapsedTitleTextAppearance="@color/black"
app:contentScrim="@color/colorPrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clickable="true"
>
<ImageView
android:id="@+id/backdrop"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:baselineAlignBottom="false"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"
app:layout_collapseMode="parallax"
/>
<ImageView
android:id="@+id/play_btn"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:adjustViewBounds="true"
android:baselineAlignBottom="false"
android:clickable="true"
android:scaleType="center"
app:srcCompat="@drawable/play_button"
/>
</RelativeLayout>
<android.support.v7.widget.Toolbar
android:id="@+id/my_toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
/>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
在模拟器中运行应用程序后，工具栏可以正常工作，但是我仍然很困惑为什么在android studio中会发生这种情况.我已经清除了缓存，重新构建，重新检查了支持库版本，以及我能想到的所有其他内容.我想念什么?
Upon running the app in the emulator, the toolbar works just fine, but I'm still confused why this is happening in android studio. I've cleared caches, rebuilt, rechecked Support Library Versions, and everything else I could think of. What am I missing?
推荐答案
删除
app:collapsedTitleTextAppearance="@color/black
相反，要更改标题颜色，请使用此处描述的方法之一:
Instead of this, to change title colors, use one of methods described here:
还将您的Android支持库更新为24.2.1版本.
Also update your Android Support Libraries to 24.2.1 version.
这篇关于无法实例化CollapsingToolBarLayout的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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