iOS 经验总结

1.主线程在动画未结束时进行操作可能导致应用崩溃

如下，当dismissViewControllerAnimated:为YES时，由于后续有页面显示，就在应用中导致了崩溃

- (void)imagePickerController:(UIImagePickerController *)picker

didFinishPickingMediaWithInfo:(NSDictionary *)info {

UIImage *image = [info objectForKey:UIImagePickerControllerEditedImage];

self.decoding = YES;

[picker dismissViewControllerAnimated:NO completion:nil];

__block ZXingWidgetController *tempSelf = self;

tempSelf.imageDecoder = [tempSelf decodeImage:image cropRect:CGRectZero];

}

2.当发现界面未按代码运行进行刷新时，如tableview reloaddata，界面未刷新，可能是因为reloaddata不是在主线程导致