如果我在包含外部链接的UIWebView中调用loadHTMLString，那么再次尝试loadHTMLString崩溃。
HTML按如下方式加载：
NSURL *url = [[NSBundle mainBundle] URLForResource:@"help" withExtension:@"html"];
NSString *text = [NSString stringWithContentsOfURL:url encoding:NSUTF8StringEncoding error:nil];
[[self webView] loadHTMLString:text baseURL:nil];
help.html可以包含以下链接：
如果点击该链接，则会加载该页面。但是我在导航栏上有一个“Home”按钮，它再次调用上面的代码（loadHTMLString），这会使应用程序崩溃。
在查看外部链接后，有什么方法可以“欺骗”UIWebView再次加载HTML字符串？
参考文献： UIWebView won't goBack after loading HTML in iOS
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** setObjectForKey: key cannot be nil'
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#24 0x04ce9c76 in WebCore::EventTarget::fireEventListeners(WebCore::Event*) ()
#25 0x05333ce9 in WebCore::Node::handleLocalEvents(WebCore::Event*) ()
#26 0x04cd0419 in WebCore::EventDispatcher::dispatchEvent(WTF::PassRefPtr<WebCore::Event>) ()
#27 0x04cd16da in WebCore::EventDispatchMediator::dispatchEvent(WebCore::EventDispatcher*) const ()
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#29 0x05333eaa in WebCore::Node::dispatchEvent(WTF::PassRefPtr<WebCore::Event>) ()
#30 0x04bf85ad in WebCore::Document::finishedParsing() ()
#31 0x04e570ad in WebCore::HTMLTreeBuilder::finished() ()
#32 0x04dd4a9b in WebCore::HTMLDocumentParser::prepareToStopParsing() ()
#33 0x04c16a14 in WebCore::DocumentWriter::end() ()
#34 0x04c092a3 in WebCore::DocumentLoader::finishedLoading() ()
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#37 0x052f650e in WebCore::MainResourceLoader::didReceiveResponse(WebCore::ResourceResponse const&) ()
#38 0x052f4a58 in WebCore::MainResourceLoader::handleDataLoadNow(WebCore::Timer<WebCore::MainResourceLoader>*) ()
#39 0x052f8016 in WebCore::Timer<WebCore::MainResourceLoader>::fired() ()
#40 0x056e415c in WebCore::ThreadTimers::sharedTimerFiredInternal() ()
#41 0x056e4036 in WebCore::ThreadTimers::sharedTimerFired() ()
#42 0x05531c50 in WebCore::timerFired(__CFRunLoopTimer*, void*) ()
#43 0x03f11376 in __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ ()
#44 0x03f10e06 in __CFRunLoopDoTimer ()
#45 0x03ef8a82 in __CFRunLoopRun ()
#46 0x03ef7f44 in CFRunLoopRunSpecific ()
#47 0x03ef7e1b in CFRunLoopRunInMode ()
#48 0x05723c50 in RunWebThread(void*) ()
#49 0x9ca6ded9 in _pthread_start ()
答案 0 :(得分：0)