joh*_*ann 5 javascript java android webview
当使用我的 webView 加载 url 时，应用程序在几秒钟后崩溃（没有错误日志...）。
\n\n我的代码：
\n\n wv = new WebView(this);\n wv.clearCache(true);\n wv.clearHistory();\n wv.getSettings().setJavaScriptEnabled(true);\n wv.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);\n\n wv.setDownloadListener(new DownloadListener() {\n @Override\n public void onDownloadStart(String url, String userAgent,\n String contentDisposition, String mimetype, long contentLength) {\n Intent intent = new Intent(Intent.ACTION_VIEW);\n intent.setType(mimetype);\n intent.setData(Uri.parse(url));\n startActivity(intent);\n }\n });\n\n\n wv.setWebViewClient(new WebViewClient() {\n @Override\n public boolean shouldOverrideUrlLoading(WebView view, String url) {\n\n // TODO change for other domains\n URL nextUrl;\n try {\n nextUrl = new URL(url.toString());\n }catch (MalformedURLException e){\n nextUrl = null;\n }\n\n if(nextUrl !=null && nextUrl.getHost().toString().equals(DOMAIN)) {\n Toast.makeText(mContext, nextUrl.getHost().toString(), Toast.LENGTH_SHORT).show();\n view.loadUrl(url);\n return false;\n\n }else{\n Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));\n startActivity(browserIntent);\n return true;\n }\n\n }\n });\n\n wv.setWebChromeClient(new WebChromeClient() {\n public void onProgressChanged(WebView view, int progress) {\n MainActivity.this.setProgress(progress * 1000);\n }\n public boolean onConsoleMessage(ConsoleMessage cm) {\n Log.d("MyProject: WebView: ", cm.message() + " -- From line "\n + cm.lineNumber() + " of "\n + cm.sourceId() );\n return true;\n }\n });\n\n wv.loadUrl(URL);\n setContentView(wv);\n日志 ：
\n\n01-20 18:00:50.798 7233-7288/ my.appli.com I/dalvikvm\xef\xb9\x95 "WebViewCoreThread" prio=5 tid=12 NATIVE\n01-20 18:00:50.798 7233-7288/ my.appli.com I/dalvikvm\xef\xb9\x95 | group="main" sCount=0 dsCount=0 obj=0x419a0be0 self=0x68f6c750\n01-20 18:00:50.798 7233-7288/ my.appli.com I/dalvikvm\xef\xb9\x95 | sysTid=7288 nice=10 sched=0/0 cgrp=apps/bg_non_interactive handle=1773204176\n01-20 18:00:50.799 7233-7288/ my.appli.com I/dalvikvm\xef\xb9\x95 | state=R schedstat=( 0 0 0 ) utm=2326 stm=119 core=0\n01-20 18:00:50.841 7233-7288/ my.appli.com I/dalvikvm\xef\xb9\x95 #00 pc 000012a0 /system/lib/libcorkscrew.so (unwind_backtrace_thread+27)\n01-20 18:00:50.841 7233-7288/ my.appli.com I/dalvikvm\xef\xb9\x95 #01 pc 0006235c /system/lib/libdvm.so (dvmDumpNativeStack(DebugOutputTarget const*, int)+35)\n01-20 18:00:50.841 7233-7288/ my.appli.com I/dalvikvm\xef\xb9\x95 #02 pc 000561bc /system/lib/libdvm.so (dvmDumpThreadEx(DebugOutputTarget const*, Thread*, bool)+303)\n01-20 18:00:50.841 7233-7288/ my.appli.com I/dalvikvm\xef\xb9\x95 #03 pc 00056256 /system/lib/libdvm.so (dvmDumpThread(Thread*, bool)+25)\n01-20 18:00:50.841 7233-7288/ my.appli.com I/dalvikvm\xef\xb9\x95 #04 pc 000478c8 /system/lib/libdvm.so (dvmDebuggerSignalHandler(int, siginfo*, void*)+15)\n01-20 18:00:50.841 7233-7288/ my.appli.com I/dalvikvm\xef\xb9\x95 at android.webkit.JWebCoreJavaBridge.sharedTimerFired(Native Method)\n01-20 18:00:50.841 7233-7288/ my.appli.com I/dalvikvm\xef\xb9\x95 at android.webkit.JWebCoreJavaBridge.fireSharedTimer(JWebCoreJavaBridge.java:92)\n01-20 18:00:50.841 7233-7288/ my.appli.com I/dalvikvm\xef\xb9\x95 at android.webkit.JWebCoreJavaBridge.handleMessage(JWebCoreJavaBridge.java:108)\n01-20 18:00:50.841 7233-7288/ my.appli.com I/dalvikvm\xef\xb9\x95 at android.os.Handler.dispatchMessage(Handler.java:99)\n01-20 18:00:50.841 7233-7288/ my.appli.com I/dalvikvm\xef\xb9\x95 at android.os.Looper.loop(Looper.java:137)\n01-20 18:00:50.841 7233-7288/ my.appli.com I/dalvikvm\xef\xb9\x95 at android.webkit.WebViewCore$WebCoreThread.run(WebViewCore.java:900)\n01-20 18:00:50.841 7233-7288/ my.appli.com I/dalvikvm\xef\xb9\x95 at java.lang.Thread.run(Thread.java:856)\n01-20 18:00:50.841 7233-7288/ my.appli.com I/dalvikvm\xef\xb9\x95 [ 01-20 18:00:50.841 7233: 7288 F/libc ]\n Fatal signal 11 (SIGSEGV) at 0x0000001c (code=1), thread 7288 (WebViewCoreThre)\n当我尝试使用 Android 设备（4.1）的默认浏览器加载相同的 URL 时，我遇到了同样的问题（崩溃）。
\n\n我要加载的网址是：
\n\n\n\n感谢您的帮助。
\n\n---编辑1
\n\n我尝试过使用最近的 Android 手机 (4.4)，应用程序没有崩溃。
\n\n出于调试目的，我删除了网站的所有重要部分（图像、js...），但应用程序在向下滚动后仍然崩溃。
\n//编辑：找到了！罪魁祸首在第 2540 行general.css：
#head-search-form{display: block;margin: 30px 0;}
更具体地说，它display: block以某种方式让人WebView窒息。我不是一个网络开发人员，但是用flexor交换值none似乎不再导致崩溃（而且我无法分辨移动设备上的视觉差异）。希望有帮助！
我已经建立了一个小型测试项目，并且能够在（虚拟）Android 4.1 设备上重现崩溃。它似乎只在页面完全加载后滚动时发生。即，只要您不开始滚动，就可以毫无问题地展开菜单抽屉......
我能够将罪魁祸首的范围缩小到general.css。一旦您不加载该样式表，页面就会正常工作并滚动，但当然看起来不会很漂亮。
由于共有 3300 多行，我建议您通过修复W3C CSS Validator 指示的错误general.css来开始搜索实际原因。如果这不能解决问题，请开始禁用与照片网格相关的样式规则，尤其是涉及动画/转换的任何内容。如果我能抽出时间，我自己也可以尝试一下。
以下是更广泛的堆栈跟踪，仅供您参考。其他人也许也能在那里找到更多指示。
mh.test.webview A/libc: Fatal signal 11 (SIGSEGV) at 0x00001f08 (code=1), thread 11949 (WebViewCoreThre)
I/DEBUG: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
I/DEBUG: Build fingerprint: 'generic/vbox86p/vbox86p:4.1.1/JRO03S/eng.buildbot.20151117.133415:userdebug/test-keys'
I/DEBUG: pid: 11930, tid: 11949, name: WebViewCoreThre >>> mh.test.webview <<<
I/DEBUG: signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 00001f08
I/DEBUG: eax b84902e4 ebx 9ba8b488 ecx b804b028 edx b83c0224
I/DEBUG: esi b8490360 edi b804b028
I/DEBUG: xcs 00000073 xds 0000007b xes 0000007b xfs 00000000 xss 0000007b
I/DEBUG: eip 00001f08 ebp 997b9748 esp 997b96dc flags 00010296
I/DEBUG: #00 pc 00001f08 <unknown>
I/DEBUG: #01 pc 00344fd6 /system/lib/libwebcore.so (WebCore::RenderLayerCompositor::computeCompositingRequirements(WebCore::RenderLayer*, WTF::HashMap<WebCore::RenderLayer*, WebCore::IntRect, WTF::PtrHash<WebCore::RenderLayer*>, WTF::HashTraits<WebCore::RenderLayer*>, WTF::HashTraits<WebCore::IntRect> >*, WebCore::CompositingState&, bool&)+38)
I/DEBUG: #02 pc 003454bb /system/lib/libwebcore.so (WebCore::RenderLayerCompositor::computeCompositingRequirements(WebCore::RenderLayer*, WTF::HashMap<WebCore::RenderLayer*, WebCore::IntRect, WTF::PtrHash<WebCore::RenderLayer*>, WTF::HashTraits<WebCore::RenderLayer*>, WTF::HashTraits<WebCore::IntRect> >*, WebCore::CompositingState&, bool&)+1291)
I/DEBUG: #03 pc 003454bb /system/lib/libwebcore.so (WebCore::RenderLayerCompositor::computeCompositingRequirements(WebCore::RenderLayer*, WTF::HashMap<WebCore::RenderLayer*, WebCore::IntRect, WTF::PtrHash<WebCore::RenderLayer*>, WTF::HashTraits<WebCore::RenderLayer*>, WTF::HashTraits<WebCore::IntRect> >*, WebCore::CompositingState&, bool&)+1291)
I/DEBUG: #04 pc 003454bb /system/lib/libwebcore.so (WebCore::RenderLayerCompositor::computeCompositingRequirements(WebCore::RenderLayer*, WTF::HashMap<WebCore::RenderLayer*, WebCore::IntRect, WTF::PtrHash<WebCore::RenderLayer*>, WTF::HashTraits<WebCore::RenderLayer*>, WTF::HashTraits<WebCore::IntRect> >*, WebCore::CompositingState&, bool&)+1291)
I/DEBUG: #05 pc 003454bb /system/lib/libwebcore.so (WebCore::RenderLayerCompositor::computeCompositingRequirements(WebCore::RenderLayer*, WTF::HashMap<WebCore::RenderLayer*, WebCore::IntRect, WTF::PtrHash<WebCore::RenderLayer*>, WTF::HashTraits<WebCore::RenderLayer*>, WTF::HashTraits<WebCore::IntRect> >*, WebCore::CompositingState&, bool&)+1291)
I/DEBUG: #06 pc 00346c55 /system/lib/libwebcore.so (WebCore::RenderLayerCompositor::updateCompositingLayers(WebCore::CompositingUpdateType, WebCore::RenderLayer*)+213)
I/DEBUG: #07 pc 0020e727 /system/lib/libwebcore.so (WebCore::FrameView::layout(bool)+1159)
I/DEBUG: #08 pc 0068126f /system/lib/libwebcore.so (WebCore::Document::updateLayout()+127)
I/DEBUG: #09 pc 0068bbda /system/lib/libwebcore.so (WebCore::Document::updateLayoutIgnorePendingStylesheets()+90)
I/DEBUG: #10 pc 005ead53 /system/lib/libwebcore.so (WebCore::CSSComputedStyleDeclaration::getPropertyCSSValue(int, WebCore::EUpdateLayout) const+467)
I/DEBUG: #11 pc 005f35e9 /system/lib/libwebcore.so (WebCore::CSSComputedStyleDeclaration::getPropertyCSSValue(int) const+41)
I/DEBUG: #12 pc 005e68d7 /system/lib/libwebcore.so (WebCore::CSSComputedStyleDeclaration::getPropertyValue(int) const+55)
I/DEBUG: #13 pc 006297f8 /system/lib/libwebcore.so (WebCore::CSSStyleDeclaration::getPropertyValue(WTF::String const&)+88)
I/DEBUG: #14 pc 004d9475 /system/lib/libwebcore.so (WebCore::CSSStyleDeclarationInternal::getPropertyValueCallback(v8::Arguments const&)+181)
I/DEBUG: #15 pc 000efdd4 <unknown>
I/DEBUG: #16 pc 0005cf6b <unknown>
I/DEBUG: #17 pc 000bb32f <unknown>
I/DEBUG: #18 pc 00003b41 <unknown>
I/DEBUG: #19 pc 000f47ce <unknown>
I/DEBUG: #20 pc 0001a5a3 <unknown>
I/DEBUG: #21 pc 000065e3 <unknown>
I/DEBUG: #22 pc 00003b41 <unknown>
I/DEBUG: #23 pc 00024c59 <unknown>
I/DEBUG: #24 pc 00024dad <unknown>
I/DEBUG: #25 pc 00003b41 <unknown>
I/DEBUG: #26 pc 0001a59c <unknown>
I/DEBUG: #27 pc 000d7172 <unknown>
I/DEBUG: #28 pc 0001a5a3 <unknown>
I/DEBUG: #29 pc 000d40ed <unknown>
I/DEBUG: #30 pc 00017bf9 <unknown>
I/DEBUG: #31 pc 00008c2a <unknown>
I/DEBUG: 997b969c 00000000
I/DEBUG: 997b96a0 00000000
I/DEBUG: 997b96a4 00000000
I/DEBUG: 997b96a8 00000000
I/DEBUG: 997b96ac 00000000
I/DEBUG: 997b96b0 00000000
I/DEBUG: 997b96b4 00000000
I/DEBUG: 997b96b8 00000000
I/DEBUG: 997b96bc 00000000
I/DEBUG: 997b96c0 00000000
I/DEBUG: 997b96c4 00000000
I/DEBUG: 997b96c8 00000000
I/DEBUG: 997b96cc 00000000
I/DEBUG: 997b96d0 00000000
I/DEBUG: 997b96d4 00000000
I/DEBUG: 997b96d8 00000000
I/DEBUG: #00 997b96dc 9ad1cdd4 /system/lib/libwebcore.so (WebCore::RenderLayer::updateLayerPosition()+52)
I/DEBUG: 997b96e0 b84902e4 [heap]
I/DEBUG: 997b96e4 b8490090 [heap]
I/DEBUG: 997b96e8 0000000f
I/DEBUG: 997b96ec 0000002f
I/DEBUG: 997b96f0 b8490090 [heap]
I/DEBUG: 997b96f4 00000001
I/DEBUG: 997b96f8 9ad2204e /system/lib/libwebcore.so (WebCore::RenderLayer::repaintIncludingNonCompositingDescendants(WebCore::RenderBoxModelObject*)+14)
I/DEBUG: 997b96fc b827f428 [heap]
I/DEBUG: 997b9700 9ba8b488 /system/lib/libwebcore.so
I/DEBUG: 997b9704 b8490090 [heap]
I/DEBUG: 997b9708 997b9748 [stack:11949]
I/DEBUG: 997b970c 9ad35d38 /system/lib/libwebcore.so (WebCore::RenderLayerCompositor::updateBacking(WebCore::RenderLayer*, WebCore::RenderLayerCompositor::CompositingChangeRepaint)+344)
I/DEBUG: 997b9710 b8490014 [heap]
I/DEBUG: 997b9714 b848fe3c [heap]
I/DEBUG: 997b9718 00000012
I/DEBUG: ........ ........
I/DEBUG: #01 997b9750 b8490360 [heap]
I/DEBUG: 997b9754 b8490090 [heap]
I/DEBUG: 997b9758 00000000
I/DEBUG: 997b975c 997b98e0 [stack:11949]
I/DEBUG: 997b9760 997ba84f [stack:11949]
I/DEBUG: 997b9764 b843a9e4 [heap]
I/DEBUG: 997b9768 00000034
I/DEBUG: 997b976c 00000180
I/DEBUG: 997b9770 b848fe3c [heap]
I/DEBUG: 997b9774 b85257f8 [heap]
I/DEBUG: 997b9778 9ace0300 /system/lib/libwebcore.so (WebCore::RenderBox::dirtyLineBoxes(bool)+80)
I/DEBUG: 997b977c 43400000
I/DEBUG: 997b9780 b83fe51c [heap]
I/DEBUG: 997b9784 997b9788 [stack:11949]
I/DEBUG: 997b9788 004a0000
I/DEBUG: 997b978c b848feb8 [heap]
I/DEBUG: ........ ........
I/DEBUG: #02 997b9aa0 b804b028 [heap]
I/DEBUG: 997b9aa4 b8490360 [heap]
I/DEBUG: 997b9aa8 00000000
I/DEBUG: 997b9aac 997b9c30 [stack:11949]
I/DEBUG: 997b9ab0 997ba84f [stack:11949]
I/DEBUG: 997b9ab4 b83fe51c [heap]
I/DEBUG: 997b9ab8 00000000
I/DEBUG: 997b9abc 00000001
I/DEBUG: 997b9ac0 b86fd038 [heap]
I/DEBUG: 997b9ac4 b86fd368 [heap]
I/DEBUG: 997b9ac8 997b9b48 [stack:11949]
I/DEBUG: 997b9acc 9adac54a /system/lib/libwebcore.so (WebCore::TransformState::move(int, int, WebCore::TransformState::TransformAccumulation)+58)
I/DEBUG: 997b9ad0 b83fe678 [heap]
I/DEBUG: 997b9ad4 b8294d4c [heap]
I/DEBUG: 997b9ad8 00580b05
I/DEBUG: 997b9adc b83fe770 [heap]
I/DEBUG: ........ ........
I/DEBUG: (no map below)
I/DEBUG: (no map for address)
I/DEBUG: 20c1e000-20c1f000
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