Android-Bug修复--java.lang.NoSuchFieldError: Toolbar_buttonGravity

Android-Bug修复–java.lang.NoSuchFieldError: Toolbar_buttonGravity

java.lang.NoSuchFieldError: Toolbar_buttonGravity
at android.support.v7.widget.Toolbar.(Toolbar.java:244)
at android.support.v7.widget.Toolbar.(Toolbar.java:231)
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.loadView(ViewLoader.java:220)
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:426)
at com.android.layoutlib.bridge.bars.BridgeActionBar.(BridgeActionBar.java:84)
at com.android.layoutlib.bridge.bars.AppCompatActionBar.(AppCompatActionBar.java:59)
at com.android.layoutlib.bridge.impl.Layout.createActionBar(Layout.java:241)
at com.android.layoutlib.bridge.impl.Layout.(Layout.java:153)
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.RenderTask2.compute(RenderTask.java:567)atcom.android.tools.idea.rendering.RenderTask2.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.lambdainflate1(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)

AS的设计面板显示不出界面

报错原因是说：在我V7.jar没有Toolbar_buttonGravity这个文件。

解决方法：

修改APP的依赖文件，将不同版本的改成同一版本

例其中一个依赖包是
compile 'com.android.support:appcompat-v7:24.3.0'
compile 'com.android.support:recyclerview-v7:23.3.0'
compile 'com.android.support:design:25.3.0'
另一个是
compile 'com.android.support:appcompat-v7:25.3.0'
统一改成
25.3.0就好了