NSSetUncaughtExceptionHandler

1，首先在delegate文件里面- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions函数里面添加：

 NSSetUncaughtExceptionHandler (&UncaughtExceptionHandler);

2，实现捕捉到异常时调用的函数（在@implementation之上）：

 void UncaughtExceptionHandler(NSException *exception) {
  NSArray *arr = [exception callStackSymbols];
  NSString *reason = [exception reason];
  NSString *name = [exception name];

  NSString *urlStr = [NSString stringWithFormat:@"mailto://[email protected]?subject=bug报告&body=xxx项目报告!"
       "错误详情:%@--------------------------%@---------------------%@",
       name,reason,[arr componentsJoinedByString:@""]];

  NSURL *url = [NSURL URLWithString:[urlStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
  [[UIApplication sharedApplication] openURL:url];
     NSLog(@"%@",url);
 }