以下是来自Crashlytics的堆栈跟踪，它在设置TextView的框架高度时崩溃:(我在同一行@objcUIView.height.setter(UIView+.swift)遇到了EXC_BAD_ACCESSKERN_INVALID_ADDRESS和SIGABRTABORT崩溃)EXC_BAD_ACCESSKERN_INVALID_ADDRESS0x000000000000000dCrashed:com.apple.main-thread0CoreText0x194d24cd8TOpenTypeMorph::SetLookups(OTL::GSUB&,unsignedintcons

我有以下代码发出HTTP请求，然后将结果输出到UITextView:@IBOutletvarechoLog:UITextView!@IBActionfuncsendEcho(sender:AnyObject){letcallback={(textString:String)->Voidinself.echoLog.text=textString//Appcrasheshere:(}HTTPRequest("http://localhost/echo",["echo":"Echo!"],callback)}但是当我调用sendEcho时，应用程序崩溃并出现此错误:2014-07-2820