Question

在我的应用程序中，我用相机拍照后我想导航到

中的另一个viewcontroller

didFinishPickingMediaWithInfo

现在，我在dismissViewControllerAnimated函数的completition块中执行此操作，但我觉得这不是最优雅的方法。你能告诉我这可以做得更好吗？这是确切的代码

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    NSString *mediaType = info[UIImagePickerControllerMediaType];

    if ([mediaType isEqualToString:(NSString *)kUTTypeImage]) {
        UIImage *image = [info[UIImagePickerControllerOriginalImage] scaledCopyOfSize:CGSizeMake(175.0f, 175.0f)];


        [self dismissViewControllerAnimated:YES completion:^(void){
            setVC = [[SetVCr alloc]init];

            [[self navigationController]pushViewController:seVC animated:YES];
        }];   
    }   
}

Answer 1

您可以直接从选择器推送新视图控制器

  - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
    {
        NSString *mediaType = info[UIImagePickerControllerMediaType];

        if ([mediaType isEqualToString:(NSString *)kUTTypeImage]) {
            UIImage *image = [info[UIImagePickerControllerOriginalImage]  scaledCopyOfSize:CGSizeMake(175.0f, 175.0f)];
            setVC = [[SetVCr alloc]init];
           [picker pushViewController:seVC animated:YES];//you can push new view controller directly from the picker
        }   
    }

Answer 2

我建议将完成块设置为nil，然后在下一行调用'performSegueWithIdentifier'方法，如下所示：

[self performSegueWithIdentifier:@"segueToNewcontroller" sender:self];

来自imagePickerController的ios pushViewController：didFinishPickingMediaWithInfo

2 个答案: