Question

我的xml文件中的android...ConstraintLayout和Rendering failed with a known bug. Please try a rebuild. The following classes could not be instantiated: - android.support.v7.widget.AppCompatImageView (Open Class, Show Exception, Clear Cache) - android.support.design.widget.AppBarLayout (Open Class, Show Exception, Clear Cache) - android.support.v7.widget.Toolbar (Open Class, Show Exception, Clear Cache) - android.support.v7.widget.AppCompatTextView (Open Class, Show Exception, Clear Cache) Tip: Use View.isInEditMode() in your custom views to skip code or show sample data when shown in the IDE. If this is an unexpected error you can also try to build the project, then manually refresh the layout. Exception Details java.lang.NoSuchFieldError: ViewBackgroundHelper at android.support.v7.widget.AppCompatBackgroundHelper.loadFromAttributes(AppCompatBackgroundHelper.java:46) at android.support.v7.widget.AppCompatImageView.<init>(AppCompatImageView.java:73) at android.support.v7.widget.AppCompatImageView.<init>(AppCompatImageView.java:66) 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$2.compute(RenderTask.java:567) at com.android.tools.idea.rendering.RenderTask$2.compute(RenderTask.java:549) at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:863) at com.android.tools.idea.rendering.RenderTask.createRenderSession(RenderTask.java:549) at com.android.tools.idea.rendering.RenderTask.lambda$inflate$1(RenderTask.java:680) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)出现渲染错误。但是，在另一个应用程序中，我使用完全相同的xml文件，没有问题发生。

我正在并行开发这两个应用程序，所以没有太多的东西彼此不同但我无法理解它是这样做的。我使用的是Android Studio 2.3.3。

错误：

cookbook_path [
  '/your/cookbook/default_directory'
]

Answer 1

确保您使用的是 ConstraintLayout 库...请在app中查看：gradle

Answer 2

我不能100％确定我的解决方案是稳定的，我只需更换

compile 'com.android.support:appcompat-v7:26.+' compile 'com.android.support:appcompat-v7:26.0.0-alpha1'和

compile 'com.android.support:design:26.+' compile 'com.android.support:design:26.0.0-alpha1'，其特定版本位于应用级build.gradle。

Android Studio渲染错误xml文件

2 个答案: