Android Device Monitor dump UI hierarchy 报错：Unexpected error while obtaining UI hierarchy

之前可以的，莫名报错。

发现重启计算机和Android Studio Device Monitor后，报错



确定后，特别是对一些复杂的页面（动态）进行过截图，再此就会报错



用uiautomatorviewer.bat运行查看详细错误

org.xml.sax.SAXParseException; systemId: file:/C:/Users/ADMINI~1/AppData/Local/T

emp/uiautomatorviewer_3540125222836262876/dump_1953101848677338404.uix; lineNumb

er: 1; columnNumber: 1; 文件提前结束。

at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAX

ParseException(ErrorHandlerWrapper.java:198)

at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalErro

r(ErrorHandlerWrapper.java:177)

at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(

XMLErrorReporter.java:441)

at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(

XMLErrorReporter.java:368)

at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(X

MLScanner.java:1375)

at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$Prolog

Driver.next(XMLDocumentScannerImpl.java:1016)

at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(X

MLDocumentScannerImpl.java:607)

at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImp

l.scanDocument(XMLDocumentFragmentScannerImpl.java:488)

at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(X

ML11Configuration.java:835)

at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(X

ML11Configuration.java:764)

at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.

java:123)

at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Ab

stractSAXParser.java:1210)

at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.p

arse(SAXParserImpl.java:568)

at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl.parse(SAXParser

Impl.java:302)

at javax.xml.parsers.SAXParser.parse(SAXParser.java:328)

at com.android.uiautomator.tree.UiHierarchyXmlLoader.parseXml(UiHierarch

yXmlLoader.java:130)

at com.android.uiautomator.UiAutomatorModel.<init>(UiAutomatorModel.java

:51)

at com.android.uiautomator.UiAutomatorHelper.takeSnapshot(UiAutomatorHel

per.java:155)

at com.android.uiautomator.actions.ScreenshotAction$1.run(ScreenshotActi

on.java:91)

at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(Modal

Context.java:121)

null rootnode after parsing.

搜索关键字，发现是Android遗留bug
https://code.google.com/p/android/issues/detail?id=62906

This is fixed in L, which just rolled out last week.

For your reference:
https://android.googlesource.com/platform/frameworks/testing/+/2b6d1da16a4e38a9704c2c67b33aadf44a85b1d2

在红米4.4.4系统上也是第一次可以，后面就不行了。那如果没有L的手机怎么办呢，临时解决办法：

拔掉手机，进入安全模式，删除下列文件







重启电脑，插上手机，切到复杂页面，uiautomatorviewer.bat 保存下uix文件慢慢看吧，不保证一定能成功。最好的方法就是用L的手机了。

PS：换到魅蓝Note2 5.1 系统随便怎么保存基本都是可以的。成功率80%。