大声喊叫。几天来，我一直在寻找解决以下渲染问题的解决方案。我在Stackoverflow中查看了所有页面，但没有一个正常工作。
我也尝试过清理项目并清除缓存。但仍然：'（
在Android Studio 3.3的最新更新之后，这些问题提出了。
问题1：
详细信息：
java.lang.ClassNotFoundException: LinearLayout PluginClassLoader[org.jetbrains.android, 10.3.3] com.intellij.ide.plugins.cl.PluginClassLoader@185919a6
at com.intellij.ide.plugins.cl.PluginClassLoader.loadClass(PluginClassLoader.java:63)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at android.graphics.drawable.DrawableInflater.inflateFromClass(DrawableInflater.java:203)
at android.graphics.drawable.DrawableInflater.inflateFromXmlForDensity(DrawableInflater.java:139)
at android.graphics.drawable.Drawable.createFromXmlInnerForDensity(Drawable.java:1332)
at android.graphics.drawable.Drawable.createFromXmlForDensity(Drawable.java:1291)
at android.graphics.drawable.Drawable.createFromXml(Drawable.java:1266)
at com.android.layoutlib.bridge.impl.ResourceHelper.getDrawable(ResourceHelper.java:338)
at android.content.res.Resources_Delegate.getDrawable(Resources_Delegate.java:186)
at android.content.res.Resources.getDrawable(Resources.java:827)
at android.content.Context.getDrawable(Context.java:635)
at android.view.View.setBackgroundResource(View.java:21451)
at android.support.design.internal.BottomNavigationItemView.<init>(BottomNavigationItemView.java:85)
at android.support.design.internal.BottomNavigationItemView.<init>(BottomNavigationItemView.java:77)
at android.support.design.internal.BottomNavigationItemView.<init>(BottomNavigationItemView.java:73)
at android.support.design.internal.BottomNavigationMenuView.getNewItem(BottomNavigationMenuView.java:571)
at android.support.design.internal.BottomNavigationMenuView.buildMenuView(BottomNavigationMenuView.java:507)
at android.support.design.internal.BottomNavigationPresenter.updateMenuView(BottomNavigationPresenter.java:62)
at android.support.design.widget.BottomNavigationView.inflateMenu(BottomNavigationView.java:254)
at android.support.design.widget.BottomNavigationView.<init>(BottomNavigationView.java:187)
at android.support.design.widget.BottomNavigationView.<init>(BottomNavigationView.java:114)
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:403)
at org.jetbrains.android.uipreview.ViewLoader.loadClass(ViewLoader.java:186)
at org.jetbrains.android.uipreview.ViewLoader.loadView(ViewLoader.java:144)
at com.android.tools.idea.rendering.LayoutlibCallbackImpl.loadView(LayoutlibCallbackImpl.java:299)
at android.view.BridgeInflater.loadCustomView(BridgeInflater.java:418)
at android.view.BridgeInflater.loadCustomView(BridgeInflater.java:429)
at android.view.BridgeInflater.createViewFromTag(BridgeInflater.java:333)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730)
at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:863)
at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:72)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:837)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:824)
at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
at android.view.LayoutInflater.inflate(LayoutInflater.java:394)
at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:325)
at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:385)
at com.android.tools.idea.layoutlib.LayoutLibrary.createSession(LayoutLibrary.java:193)
at com.android.tools.idea.rendering.RenderTask.createRenderSession(RenderTask.java:509)
at com.android.tools.idea.rendering.RenderTask.lambda$inflate$4(RenderTask.java:638)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
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)
问题2： failed to instantiate class
详细信息：
java.lang.NullPointerException
at android.content.res.Resources_Delegate.getDrawable(Resources_Delegate.java:189)
at android.content.res.Resources.getDrawable(Resources.java:827)
at android.content.Context.getDrawable(Context.java:635)
at android.view.View.setBackgroundResource(View.java:21451)
at android.support.design.internal.BottomNavigationItemView.<init>(BottomNavigationItemView.java:85)
at android.support.design.internal.BottomNavigationItemView.<init>(BottomNavigationItemView.java:77)
at android.support.design.internal.BottomNavigationItemView.<init>(BottomNavigationItemView.java:73)
at android.support.design.internal.BottomNavigationMenuView.getNewItem(BottomNavigationMenuView.java:571)
at android.support.design.internal.BottomNavigationMenuView.buildMenuView(BottomNavigationMenuView.java:507)
at android.support.design.internal.BottomNavigationPresenter.updateMenuView(BottomNavigationPresenter.java:62)
at android.support.design.widget.BottomNavigationView.inflateMenu(BottomNavigationView.java:254)
at android.support.design.widget.BottomNavigationView.<init>(BottomNavigationView.java:187)
at android.support.design.widget.BottomNavigationView.<init>(BottomNavigationView.java:114)
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:403)
at org.jetbrains.android.uipreview.ViewLoader.loadClass(ViewLoader.java:186)
at org.jetbrains.android.uipreview.ViewLoader.loadView(ViewLoader.java:144)
at com.android.tools.idea.rendering.LayoutlibCallbackImpl.loadView(LayoutlibCallbackImpl.java:299)
at android.view.BridgeInflater.loadCustomView(BridgeInflater.java:418)
at android.view.BridgeInflater.loadCustomView(BridgeInflater.java:429)
at android.view.BridgeInflater.createViewFromTag(BridgeInflater.java:333)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730)
at android.view.LayoutInflater.rInflate_Original(LayoutInflater.java:863)
at android.view.LayoutInflater_Delegate.rInflate(LayoutInflater_Delegate.java:72)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:837)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:824)
at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
at android.view.LayoutInflater.inflate(LayoutInflater.java:394)
at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:325)
at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:385)
at com.android.tools.idea.layoutlib.LayoutLibrary.createSession(LayoutLibrary.java:193)
at com.android.tools.idea.rendering.RenderTask.createRenderSession(RenderTask.java:509)
at com.android.tools.idea.rendering.RenderTask.lambda$inflate$4(RenderTask.java:638)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
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)
问题3：
我的礼物：
