Results 2 issues of Nashio Yao

![WechatIMG453](https://user-images.githubusercontent.com/4479940/58863036-94e1c400-86e4-11e9-8756-bccdff596780.jpeg) `__weak __typeof(self)weakSelf = self; LGAlertView *alertView = [[LGAlertView alloc] initWithTitle:nil message:@"请选择照片来源" style:LGAlertViewStyleActionSheet buttonTitles:@[@"相册",@"拍照"] cancelButtonTitle:@"取消" destructiveButtonTitle:nil]; alertView.cancelButtonOffsetY = 10; alertView.actionHandler = ^(LGAlertView * _Nonnull alertView, NSUInteger index, NSString * _Nullable...