【移动应用开发技术】iOS 捕获全局异常统一收集

【移动应用开发技术】iOS捕获全局异常，统一收集

参考博文：/easonoutlook/archive/2012/12/27/2835979.html开发程序的过程中不管我们已经如何小心，总是会在不经意间遇到程序闪退。流畅的操作被无情地Crash打断，当程序运行Crash的时候，系统会把运行的最后时刻的运行信息记录下来，存储到一个文件中，也就是我们所说的Crash文件，当时如果是真机测试离开Xcode的时候Crash掉，我们是无法知道crash的具体位置的。现在做一个程序统一记录crash的位置。先科普一下crash的知识：Crash文件结构1、ProcessInformation(进程信息)2、BasicInformation

3、Exception（非常重要）

4、ThreadBacktrace发生Crash的线程的Crash调用栈，从上到下分别代表调用顺序，最上面的一个表示抛出异常的位置，依次往下可以看到API的调用顺序。上图的信息表明本次Crash出现xxxViewController的323行，出错的函数调用为orderCountLoadFailed。5、ThreadStateCrash时发生时刻，线程的状态，通常我们根据Crash栈即可获取到相关信息，这部分一般不用关心。6、BinaryImagesCrash时刻App加载的所有的库，其中第一行是Crash发生时我们App可执行文件的信息，可以看出为armv7，可执行文件的包得uuid位c0f……cd65，解析Crash的时候dsym文件的uuid必须和这个一样才能完成Crash的符号化解析。废话说了那么多，到底怎么捕获整个系统的crash呢，入正题，其实也很简单：创建一个工具类

ExceptionHandler.h

和

ExceptionHandler.m（oc版本），swift版本的下面再讲.ExceptionHandler.h#import<UIKit/UIKit.h>@interface

ExceptionHandler:NSObject{BOOLdismissed;}@endvoidHandleException(NSException*exception);voidSignalHandler(intsignal);voidInstallUncaughtExceptionHandler(void);ExceptionHandler.m#import"ExceptionHandler.h"#include<libkern/OSAtomic.h>#include<execinfo.h>NSString*constExceptionHandlerSignalExceptionName=@"UncaughtExceptionHandlerSignalExceptionName";NSString*constExceptionHandlerSignalKey=@"UncaughtExceptionHandlerSignalKey";NSString*constExceptionHandlerAddressesKey=@"UncaughtExceptionHandlerAddressesKey";volatileint32_tUncaughtExceptionCount=0;constint32_tUncaughtExceptionMaximum=10;constNSIntegerExceptionHandlerSkipAddressCount=4;constNSIntegerExceptionHandlerReportAddressCount=5;@implementationExceptionHandler+(NSArray*)backtrace{void

*callstack[128];

intframes=backtrace(callstack,128);

char**strs=backtrace_symbols(callstack,frames);

inti;NSMutableArray*backtrace=[NSMutableArrayarrayWithCapacity:frames];for(i=ExceptionHandlerSkipAddressCount;i<ExceptionHandlerSkipAddressCount+ExceptionHandlerReportAddressCount;i++){[backtraceaddObject:[NSStringstringWithUTF8String:strs[i]]];}free(strs);

returnbacktrace;}-(void)alertView:(UIAlertView*)anAlertViewclickedButtonAtIndex:(NSInteger)anIndex{if(anIndex==0){dismissed=YES;}}-(void)validateAndSaveCriticalApplicationData{}-(void)handleException:(NSException*)exception{[selfvalidateAndSaveCriticalApplicationData];UIAlertView*alert=[[UIAlertViewalloc]initWithTitle:NSLocalizedString(@"Unhandledexception",nil)message:[NSStringstringWithFormat:NSLocalizedString(@"Youcantrytocontinuebuttheapplicationmaybeunstable.\n\n"@"Debugdetailsfollow:\n%@\n%@",nil),[exceptionreason],[[exceptionuserInfo]objectForKey:ExceptionHandlerAddressesKey]]delegate:selfcancelButtonTitle:NSLocalizedString(@"Quit",nil)otherButtonTitles:NSLocalizedString(@"Continue",nil),nil];[alertshow];

NSUserDefaults＊defaults=[NSUserDefaultsstandardUserDefaults];

CFRunLoopRefrunLoop=CFRunLoopGetCurrent();CFArrayRefallModes=CFRunLoopCopyAllModes(runLoop);while(!dismissed){for(NSString*modein(NSArray*)allModes){CFRunLoopRunInMode((CFStringRef)mode,0.001,false);}}CFRelease(allModes);NSSetUncaughtExceptionHandler(NULL);signal(SIGABRT,SIG_DFL);signal(SIGILL,SIG_DFL);signal(SIGSEGV,SIG_DFL);signal(SIGFPE,SIG_DFL);signal(SIGBUS,SIG_DFL);signal(SIGPIPE,SIG_DFL);if([[exceptionname]isEqual:ExceptionHandlerSignalExceptionName]){kill(getpid(),[[[exceptionuserInfo]objectForKey:ExceptionHandlerSignalKey]intValue]);}else{[exceptionraise];}}@endvoidHandleException(NSException*exception){int32_texceptionCount=OSAtomicIncrement32(&UncaughtExceptionCount);if(exceptionCount>UncaughtExceptionMaximum){return;}NSArray*callStack=[ExceptionHandlerbacktrace];NSMutableDictionary*userInfo=[NSMutableDictionarydictionaryWithDictionary:[exceptionuserInfo]];[userInfosetObject:callStackforKey:ExceptionHandlerAddressesKey];[[[ExceptionHandleralloc]init]performSelectorOnMainThread:@selector(handleException:)withObject:[NSExceptionexceptionWithName:[exceptionname]reason:[exceptionreason]userInfo:userInfo]waitUntilDone:YES];}voidSignalHandler(intsignal){int32_texceptionCount=OSAtomicIncrement32(&UncaughtExceptionCount);if(exceptionCount>UncaughtExceptionMaximum){return;}NSMutableDictionary*userInfo=[NSMutableDictionarydictionaryWithObject:[NSNumbernumberWithInt:signal]forKey:ExceptionHandlerSignalKey];NSArray*callStack=[ExceptionHandlerbacktrace];[userInfosetObject:callStackforKey:ExceptionHandlerAddressesKey];[[[ExceptionHandleralloc]init]performSelectorOnMainThread:@selector(handleException:)withObject:[NSExceptionexceptionWithName:ExceptionHandlerSignalExceptionNamereason:[NSStringstringWithFormat:NSLocalizedString(@"Signal%dwasraised.",nil),signal]userInfo:[NSDictionarydictionaryWithObject:[NSNumbernumberWithInt:signal]forKey:ExceptionHandlerSignalKey]]waitUntilDone:YES];}voidInstallUncaughtExceptionHandler(void){NSSetUncaughtExceptionHandler(&HandleException);signal(SIGABRT,SignalHandler);signal(SIGILL,SignalHandler);signal(SIGSEGV,SignalHandler);signal(SIGFPE,SignalHandler);signal(SIGBUS,SignalHandler);signal(SIGPIPE,SignalHandler);}使用方式：-(BOOL)application:(UIApplication*)applicationdidFinishLaunchingWithOptions:(NSDictionary*)launchOptions{

InstallUncaughtExceptionHandler();

returnYES;}大功告成swift版本：funcapplication(application:UIApplication,didFinishLaunchingWithOptionslaunchOptions:[NSObject:AnyObject]?)->Bool{

//输出bug信息

print("系统bug日志记录－－－－－－－－－－－－－－－－－－－－－\(NSUserDefaults.standardUserDefaults().valueForKey(ERROR_MESSAGE))")

NSSetUncaughtExceptionHandler{exceptionin

varmessage=excep