iphone - 访问UIImagePickerController的didFinishPickingImage返回的图像属性时，获取EXC_BAD_ACCESS

Question

我现在在模拟器中工作，当尝试访问UIImagePickerController的didFinishPickingImage返回的图像的属性时，出现EXC_BAD_ACCESS错误:

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)img editingInfo:(NSDictionary *)editInfo {
    NSLog(@"Image size: %@", img.size);
}

我究竟做错了什么？

Answer 1

您正在尝试打印对象(“％@”格式说明符)，但是size具有CGSize类型，其类型定义为plain struct。用

NSLog(@"Image size: %@", NSStringFromCGSize(img.size));

要么

NSLog(@"Image size: (%f, %f)", img.size.width, img.size.height);