在注册AFW之后，Android O无法使Webview膨胀 [英] Android O failing to inflate webview after AFW enrollment
问题描述
我正在Pixel XL设备中使用最新的Android O Beta版本. 这是我的xml网页视图.
I'm using the latest Android O beta version in a Pixel XL device. This is my webview in xml.
<WebView
android:id="@+id/launch_anim"
android:layout_width="match_parent"
android:layout_height="150dp"
android:layout_centerHorizontal="true" />
这是我的Activity类中使用它的方式
This is how its used in my Activity class
WebView launch_anim = (WebView)findViewById(R.id.launch_anim);
launch_anim.loadUrl("file:///android_asset/launch_anim_centered.html");
这是资产目录中我的launch_anim_centered.html文件
This is my launch_anim_centered.html file in assets dir
<HTML>
<head>
<style>
body {
background-color: #FFFFFF;
}
</style>
</head>
<body>
<CENTER>
<IMG SRC="launch_anim_1x.gif">
</CENTER>
</body>
</HTML>
launch_anim_1x.gif文件是一个gif文件，其中包含旋转的图像. 当我启动应用程序时，此活动的运行没有问题.然后，我进行了Android for Work的注册.注册后，一旦启动应用程序，此活动将无法呈现，并引发类似这样的异常
The launch_anim_1x.gif file is a gif file containing an image which is rotating. When I start the application, there is no problem in running of this activity. Then I do Android-For-Work enrollment. Post enrollment, as soon as app is launched, this activity fails to render and it throws an exception like this
07-28 15:39:55.352 16538-16538/? I/WebViewFactory: Loading com.google.android.webview version 58.0.3029.125 (code 303012500)
07-28 15:39:55.353 16538-16538/? D/AndroidRuntime: Shutting down VM
07-28 15:39:55.354 16538-16538/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.sample.app, PID: 16538
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.sample.app/com.sample.app.ui.StartupActivity}: android.view.InflateException: Binary XML file line #25: Binary XML file line #25: Error inflating class android.webkit.WebView
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2817)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6541)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
Caused by: android.view.InflateException: Binary XML file line #25: Binary XML file line #25: Error inflating class android.webkit.WebView
Caused by: android.view.InflateException: Binary XML file line #25: Error inflating class android.webkit.WebView
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.newInstance0(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:334)
at android.view.LayoutInflater.createView(LayoutInflater.java:647)
at com.android.internal.policy.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:58)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:720)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:788)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:863)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:824)
at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
at com.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java:418)
at android.app.Activity.setContentView(Activity.java:2654)
at com.sample.app.ui.StartupActivity.onCreate(Unknown Source:37)
at android.app.Activity.performCreate(Activity.java:6975)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1213)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2770)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2892)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1593)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6541)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
Caused by: java.lang.NullPointerException
at android.content.res.AssetManager.addAssetPathNative(Native Method)
at android.content.res.AssetManager.addAssetPathInternal(AssetManager.java:689)
at android.content.res.AssetManager.addAssetPathAsSharedLibrary(AssetManager.java:684)
at android.webkit.WebViewFactory.getProviderClass(WebViewFactory.java:407)
at android.webkit.WebViewFactory.getProvider(WebViewFactory.java:211)
at android.webkit.WebView.getFactory(WebView.java:2467)
at android.webkit.WebView.ensureProviderCreated(WebView.java:2462)
at android.webkit.WebView.setOverScrollMode(WebView.java:2527)
at android.view.View.<init>(View.java:4536)
at android.view.View.<init>(View.java:4668)
at android.view.ViewGroup.<init>(ViewGroup.java:597)
at android.widget.AbsoluteLayout.<init>(AbsoluteLayout.java:55)
07-28 15:39:55.354 16538-16538/? E/AndroidRuntime: at android.webkit.WebView.<init>(WebView.java:636)
at android.webkit.WebView.<init>(WebView.java:581)
at android.webkit.WebView.<init>(WebView.java:564)
at android.webkit.WebView.<init>(WebView.java:551)
... 27 more
此问题仅在Pixel和PixelXL设备中出现. Nexus设备运行正常.感谢您为解决此问题提供的任何帮助.谢谢 新信息.因此，我禁用了Webview以查看会发生什么，但是当尝试访问CookieManager.getInstance()时，应用程序崩溃了.这是堆栈跟踪:
This issue is only seen in Pixel and PixelXL devices. Nexus device works fine. Any help in resolving this issue is appreciated. Thanks New info. So I disabled the webview to see what happens but then the app crashes when trying to access CookieManager.getInstance(). This is the stacktrace:
07-31 09:21:51.767 11267-11557/com.airwatch.vmworkspace I/WebViewFactory: Loading com.google.android.webview version 58.0.3029.125 (code 303012500)
07-31 09:21:51.775 13243-13276/? I/ConfigUpdater: Update started
--------- beginning of crash
07-31 09:21:51.775 11267-11557/com.airwatch.vmworkspace E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #3
Process: com.airwatch.vmworkspace, PID: 11267
java.lang.RuntimeException: An error occurred while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:353)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:383)
at java.util.concurrent.FutureTask.setException(FutureTask.java:252)
at java.util.concurrent.FutureTask.run(FutureTask.java:271)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
at java.lang.Thread.run(Thread.java:764)
Caused by: java.lang.NullPointerException
at android.content.res.AssetManager.addAssetPathNative(Native Method)
at android.content.res.AssetManager.addAssetPathInternal(AssetManager.java:689)
at android.content.res.AssetManager.addAssetPathAsSharedLibrary(AssetManager.java:684)
at android.webkit.WebViewFactory.getProviderClass(WebViewFactory.java:407)
at android.webkit.WebViewFactory.getProvider(WebViewFactory.java:211)
at android.webkit.CookieManager.getInstance(CookieManager.java:39)
at com.sample.app.network.communication.MyCookieManager.<init>(MyCookieManager.java:48)
我认为真正的问题是android.content.res.AssetManager.addAssetPathNative(Native Method)上的NullPointerException.知道如何解决这个问题吗?
I think the real problem is NullPointerException on android.content.res.AssetManager.addAssetPathNative(Native Method). Any idea how to fix this?
推荐答案
这是Android O中的一个错误:如果其中一个配置文件中禁用了Chrome，则两个配置文件的WebView都会中断，直到被Play更新为止.
This is a bug in Android O: if Chrome is disabled in one of the profiles then WebView is broken for both profiles until it's updated by Play.
To fix this issue during provisioning and avoid having to update WebView, you can enable Chrome in the work profile using DevicePolicyManager.enableSystemApp() with the package name com.android.chrome, and then prevent the user from disabling it using DevicePolicyManager.setUninstallBlocked().
If you then want to prevent the user from using the Chrome browser, you should use DevicePolicyManager.setPackagesSuspended() instead of DevicePolicyManager.setApplicationHidden().
这篇关于在注册AFW之后，Android O无法使Webview膨胀的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
