ios 捕获异常

部分情况的崩溃我们是无法避免的，就算是QQ也会有崩溃的时候。因此我们可以在程序崩溃之前做一些“动作”（收集错误信息），以下例子是把捕获到的异常发送至开发者的邮箱。

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {// Override point for customization after application launch.NSSetUncaughtExceptionHandler(&UncaughtExceptionHandler);return YES;}void UncaughtExceptionHandler(NSException *exception) {/*** 获取异常崩溃信息*/NSArray *callStack = [exception callStackSymbols];NSString *reason = [exception reason];NSString *name = [exception name];NSString *content = [NSString stringWithFormat:@"========异常错误报告========\nname:%@\nreason:\n%@\ncallStackSymbols:\n%@",name,reason,[callStack componentsJoinedByString:@"\n"]];/*** 把异常崩溃信息发送至开发者邮件*/NSMutableString *mailUrl = [NSMutableString string];[mailUrl appendString:@"mailto:[e-mail]"];[mailUrl appendString:@"?subject=程序异常崩溃，请配合发送异常报告，谢谢合作！"];[mailUrl appendFormat:@"&body=%@", content];// 打开地址NSString *mailPath = [mailUrl stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];[[UIApplication sharedApplication] openURL:[NSURL URLWithString:mailPath]];}