Android Studio Layout Builder Ausnahme

Question

Mein Android Studio lädt derzeit nicht den Inhalt meiner Layoutdateien. Der Editor zeigt mir die folgende Ausnahme:

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) 

Hat jemand eine Idee, warum dieser Fehler auftritt und wie es zu beheben?

Answer 1

Ich fand die Lösung für mein Problem. Gradle hat meinem Projekt irgendwie die neueste Support-Lib zugewiesen (26 beta2), was es nur tun sollte, wenn ich den Flavor "devAndroidO" verwende. Ich habe dieses Problem an Google gemeldet.