在WebViewClient中覆盖shouldInterceptRequest时系统崩溃

目标:

覆盖WebView发出的所有请求并自行发出请求(最终设置代理)。

码:

@Override public WebResourceResponse shouldInterceptRequest(WebView view, String url) { if (url == null || url.trim().equals("")) return null; final DefaultHttpClient httpClient = new DefaultHttpClient(); httpClient.getConnectionManager().closeExpiredConnections(); final HttpUriRequest httpRequest = new HttpGet(url); try { final HttpResponse response = httpClient.execute(httpRequest); final Header[] headers = response.getHeaders(CONTENT_TYPE); String mimeType = ""; String encoding = ""; if (headers != null && headers.length > 0) { final String type = headers[0].getValue(); final int semicolonIndex = type.indexOf(';'); if (semicolonIndex != -1) { mimeType = type.substring(0, semicolonIndex).trim(); encoding = type.substring(semicolonIndex + 1).trim(); final int equalsIndex = encoding.indexOf('='); if (equalsIndex != -1) encoding = encoding.substring(equalsIndex + 1).trim(); } else mimeType = type; } return new WebResourceResponse(mimeType, encoding, response.getEntity().getContent()); } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (IllegalArgumentException e) { e.printStackTrace(); } finally { httpClient.getConnectionManager().closeExpiredConnections(); } return null; } 

这些请求似乎都很好,但最终我得到了一个堆栈跟踪,其中包含以下两个问题之一:

 3 15:07:28.650 E/InputDispatcher( 3981): channel '40d76268 com.secure.browser/com.secure.browser.SecureBrowserActivity (server)' ~ Consumer closed input channel or an error occurred. events=0x8 01-03 15:07:28.650 E/InputDispatcher( 3981): channel '40d76268 com.secure.browser/com.secure.browser.SecureBrowserActivity (server)' ~ Channel is unrecoverably broken and will be disposed! 

这显然表明操作系统耗尽了文件描述符(fid)

要么

 01-03 15:29:36.810 I/DEBUG ( 5798): 5903cd34 ac81c0b7 /system/lib/libdvm.so 01-03 15:29:38.380 I/DEBUG ( 5798): debuggerd committing suicide to free the zombie! 01-03 15:29:38.380 I/BootReceiver( 3981): Copying /data/tombstones/tombstone_07 to DropBox 

(SYSTEM_TOMBSTONE)

这意味着我认为这意味着操作系统遇到了低级问题。

我使用3.0 +所以应该支持该function。

当我打开javascript或在没有javascript浏览一段时间后,这大多会失败。

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