在 android 工作室中渲染布局预览失败
Render layout preview failed in android studio
我正在使用 Android Studio 2.3.3 - Build #AI-162.4069837 并且我的 build.gradle
依赖块是:
compile 'com.android.support:support-v4:26.0.0-alpha1'
compile 'com.android.support:appcompat-v7:26.0.0-alpha1'
compile 'com.android.support:design:26.0.0-alpha1'
compile 'com.android.support.constraint:constraint-layout:1.0.0-alpha7'
compile 'com.android.support:support-vector-drawable:26.0.0-alpha1'
compile 'com.android.support:animated-vector-drawable:26.0.0-alpha1'
当我尝试在设计模式下预览布局时,视图不会在所有使用 android.support.design.widget.CoordinatorLayout
和 android.support.v7.widget.RecyclerView
的布局中呈现,或者...出现以下错误 -
the following classes could not be instantiated
我清理并重建项目、清除缓存、关闭并重新打开 Android Studio,但没有解决问题。
java.lang.NoSuchFieldError: ViewBackgroundHelper
at android.support.v7.widget.AppCompatBackgroundHelper.loadFromAttributes(AppCompatBackgroundHelper.java:46)
at android.support.v7.widget.AppCompatImageView.<init>(AppCompatImageView.java:63)
at android.support.v7.widget.AppCompatImageView.<init>(AppCompatImageView.java:56)
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:475)
at org.jetbrains.android.uipreview.ViewLoader.loadClass(ViewLoader.java:262)
at org.jetbrains.android.uipreview.ViewLoader.loadClass(ViewLoader.java:213)
at com.android.tools.idea.rendering.LayoutlibCallbackImpl.loadClass(LayoutlibCallbackImpl.java:193)
at android.view.BridgeInflater.loadCustomView(BridgeInflater.java:333)
at android.view.BridgeInflater.onCreateView(BridgeInflater.java:152)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:717)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:785)
at android.view.BridgeInflater.createViewFromTag(BridgeInflater.java:222)
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.inflate(LayoutInflater.java:492)
at com.android.layoutlib.bridge.bars.CustomBar.<init>(CustomBar.java:95)
at com.android.layoutlib.bridge.bars.NavigationBar.<init>(NavigationBar.java:52)
at com.android.layoutlib.bridge.bars.NavigationBar.<init>(NavigationBar.java:46)
at com.android.layoutlib.bridge.impl.Layout.createNavBar(Layout.java:284)
at com.android.layoutlib.bridge.impl.Layout.<init>(Layout.java:140)
at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:301)
at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:429)
at com.android.ide.common.rendering.LayoutLibrary.createSession(LayoutLibrary.java:368)
at com.android.tools.idea.rendering.RenderTask.compute(RenderTask.java:567)
at com.android.tools.idea.rendering.RenderTask.compute(RenderTask.java:549)
at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:863)
at com.android.tools.idea.rendering.RenderTask.createRenderSession(RenderTask.java:549)
at com.android.tools.idea.rendering.RenderTask.lambda$inflate(RenderTask.java:680)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
将您的项目级别 build.gradle 依赖项更改为此
classpath 'com.android.tools.build:gradle:2.3.3'
并用这些版本替换您的应用级别 gradle 依赖项
compile 'com.android.support:support-v4:26.+'
compile 'com.android.support:appcompat-v7:26.+'
compile 'com.android.support:design:26.+'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
compile 'com.android.support:support-vector-drawable:26.+'
compile 'com.android.support:animated-vector-drawable:26.+'
答案可能与您的问题有关
编辑:看来你并不孤单。在 and this post 中,解决方案是等待下一次更新或在 gradle.properties 中禁用缓存 有些人已回滚到稳定的 gradle 并作为临时解决方案支持库版本。
在 styles.xml 中将主题从 Theme.AppCompat.Light.DarkActionBar 更改为 Base.Theme.AppCompat.Light.DarkActionBar 对我有用。
我正在使用 Android Studio 2.3.3 - Build #AI-162.4069837 并且我的 build.gradle
依赖块是:
compile 'com.android.support:support-v4:26.0.0-alpha1'
compile 'com.android.support:appcompat-v7:26.0.0-alpha1'
compile 'com.android.support:design:26.0.0-alpha1'
compile 'com.android.support.constraint:constraint-layout:1.0.0-alpha7'
compile 'com.android.support:support-vector-drawable:26.0.0-alpha1'
compile 'com.android.support:animated-vector-drawable:26.0.0-alpha1'
当我尝试在设计模式下预览布局时,视图不会在所有使用 android.support.design.widget.CoordinatorLayout
和 android.support.v7.widget.RecyclerView
的布局中呈现,或者...出现以下错误 -
the following classes could not be instantiated
我清理并重建项目、清除缓存、关闭并重新打开 Android Studio,但没有解决问题。
java.lang.NoSuchFieldError: ViewBackgroundHelper
at android.support.v7.widget.AppCompatBackgroundHelper.loadFromAttributes(AppCompatBackgroundHelper.java:46)
at android.support.v7.widget.AppCompatImageView.<init>(AppCompatImageView.java:63)
at android.support.v7.widget.AppCompatImageView.<init>(AppCompatImageView.java:56)
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:475)
at org.jetbrains.android.uipreview.ViewLoader.loadClass(ViewLoader.java:262)
at org.jetbrains.android.uipreview.ViewLoader.loadClass(ViewLoader.java:213)
at com.android.tools.idea.rendering.LayoutlibCallbackImpl.loadClass(LayoutlibCallbackImpl.java:193)
at android.view.BridgeInflater.loadCustomView(BridgeInflater.java:333)
at android.view.BridgeInflater.onCreateView(BridgeInflater.java:152)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:717)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:785)
at android.view.BridgeInflater.createViewFromTag(BridgeInflater.java:222)
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.inflate(LayoutInflater.java:492)
at com.android.layoutlib.bridge.bars.CustomBar.<init>(CustomBar.java:95)
at com.android.layoutlib.bridge.bars.NavigationBar.<init>(NavigationBar.java:52)
at com.android.layoutlib.bridge.bars.NavigationBar.<init>(NavigationBar.java:46)
at com.android.layoutlib.bridge.impl.Layout.createNavBar(Layout.java:284)
at com.android.layoutlib.bridge.impl.Layout.<init>(Layout.java:140)
at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:301)
at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:429)
at com.android.ide.common.rendering.LayoutLibrary.createSession(LayoutLibrary.java:368)
at com.android.tools.idea.rendering.RenderTask.compute(RenderTask.java:567)
at com.android.tools.idea.rendering.RenderTask.compute(RenderTask.java:549)
at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:863)
at com.android.tools.idea.rendering.RenderTask.createRenderSession(RenderTask.java:549)
at com.android.tools.idea.rendering.RenderTask.lambda$inflate(RenderTask.java:680)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
将您的项目级别 build.gradle 依赖项更改为此
classpath 'com.android.tools.build:gradle:2.3.3'
并用这些版本替换您的应用级别 gradle 依赖项
compile 'com.android.support:support-v4:26.+'
compile 'com.android.support:appcompat-v7:26.+'
compile 'com.android.support:design:26.+'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
compile 'com.android.support:support-vector-drawable:26.+'
compile 'com.android.support:animated-vector-drawable:26.+'
编辑:看来你并不孤单。在
在 styles.xml 中将主题从 Theme.AppCompat.Light.DarkActionBar 更改为 Base.Theme.AppCompat.Light.DarkActionBar 对我有用。