android - 在android studio中编译应用程序时出错？

Question

在Android Studio项目中创建会产生错误，错误堆栈如下。创建自定义Nawigation Drawer Activity 后 pop 错误，那是什么？

java.lang.ClassNotFoundException: android.support.v4.view.AccessibilityDelegateCompatIcs$AccessibilityDelegateBridge
at org.jetbrains.android.uipreview.ProjectClassLoader.load(ProjectClassLoader.java:112)
at com.android.tools.idea.rendering.RenderClassLoader.findClass(RenderClassLoader.java:52)
at org.jetbrains.android.uipreview.ProjectClassLoader.findClass(ProjectClassLoader.java:73)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at android.support.v4.view.AccessibilityDelegateCompat.<clinit>(AccessibilityDelegateCompat.java:296)
at android.support.v4.widget.DrawerLayout.<init>(DrawerLayout.java:162)
at android.support.v4.widget.DrawerLayout.<init>(DrawerLayout.java:256)
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:408)
at org.jetbrains.android.uipreview.ViewLoader.createNewInstance(ViewLoader.java:379)
at org.jetbrains.android.uipreview.ViewLoader.loadView(ViewLoader.java:99)
at com.android.tools.idea.rendering.LayoutlibCallback.loadView(LayoutlibCallback.java:172)
at android.view.BridgeInflater.loadCustomView(BridgeInflater.java:207)
at android.view.BridgeInflater.createViewFromTag(BridgeInflater.java:132)
at android.view.LayoutInflater.inflate(LayoutInflater.java:478)
at android.view.LayoutInflater.inflate(LayoutInflater.java:381)
at com.android.layoutlib.bridge.impl.RenderSessionImpl.inflate(RenderSessionImpl.java:400)
at com.android.layoutlib.bridge.Bridge.createSession(Bridge.java:329)
at com.android.ide.common.rendering.LayoutLibrary.createSession(LayoutLibrary.java:333)
at com.android.tools.idea.rendering.RenderService$5.compute(RenderService.java:674)
at com.android.tools.idea.rendering.RenderService$5.compute(RenderService.java:663)
at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:932)
at com.android.tools.idea.rendering.RenderService.createRenderSession(RenderService.java:663)
at com.android.tools.idea.rendering.RenderService.render(RenderService.java:790)
at com.intellij.android.designer.designSurface.AndroidDesignerEditorPanel$6.run(AndroidDesignerEditorPanel.java:480)
at com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:320)
at com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:310)
at com.intellij.util.ui.update.MergingUpdateQueue$2.run(MergingUpdateQueue.java:254)
at com.intellij.util.ui.update.MergingUpdateQueue.flush(MergingUpdateQueue.java:269)
at com.intellij.util.ui.update.MergingUpdateQueue.flush(MergingUpdateQueue.java:227)
at com.intellij.util.ui.update.MergingUpdateQueue.run(MergingUpdateQueue.java:217)
at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:238)
at com.intellij.util.Alarm$Request$1.run(Alarm.java:327)
at java.util.concurrent.Executors$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)

我的xml出现错误:

<!-- A DrawerLayout is intended to be used as the top-level content view using match_parent for both width and height to consume the full space available. -->

<!-- As the main content view, the view below consumes the entire
     space available using match_parent in both dimensions. -->
<FrameLayout android:id="@+id/container" android:layout_width="match_parent"
    android:layout_height="match_parent" />

<!-- android:layout_gravity="start" tells DrawerLayout to treat
     this as a sliding drawer on the left side for left-to-right
     languages and on the right side for right-to-left languages.
     If you're not building against API 17 or higher, use
     android:layout_gravity="left" instead. -->
<!-- The drawer is given a fixed width in dp and extends the full height of
     the container. -->
<fragment android:id="@+id/navigation_drawer"
    android:layout_width="@dimen/navigation_drawer_width" android:layout_height="match_parent"
    android:layout_gravity="start"
    android:name="com.tvitbook.dd.tvitbook.NavigationDrawerFragment"
    tools:layout="@layout/fragment_navigation_drawer" />

image

Answer 1

我的猜测是您没有所需的兼容性库(android.support.v4)。如果是这种情况，请将其添加到docs之后的项目中:

1. Make sure you have downloaded the Android Support Repository using the SDK Manager.
2. Open the build.gradle file for your application.

3. Add the support library to the dependencies section. For example, to add the v4 support library, add the following lines:

   dependencies { ... compile "com.android.support:support-v4:18.0.+" }