Question

我有一个带有四个标签的tabBar应用。每个标签页的左侧都有一个相机按钮UINavigationBar。单击相机按钮，进入相机模式，拍摄照片，最后选择“使用照片”后，应将照片传输到另一个ViewController并放置在UIImageView中，该attachButtonInvoked仅在名为{{的方法后显示1}}被触发。这是我的方法，请忽略注释行：

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    //UIImage * image = [info objectForKey:UIImagePickerControllerEditedImage];
    //[picker dismissViewControllerAnimated:NO completion:nil];


    UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
    //UIImageWriteToSavedPhotosAlbum(image,nil,nil,nil);

    RGPostTableViewController *postTableView = [self.storyboard instantiateViewControllerWithIdentifier:@"postTableView"];
    RGPostViewController *postView = [self.storyboard instantiateViewControllerWithIdentifier:@"postView"];
    UINavigationController *postControl = [self.storyboard instantiateViewControllerWithIdentifier:@"postControl"];



    //postView.postImageView.image = image;

    //[picker dismissViewControllerAnimated:NO completion:nil];

    [picker presentViewController:postControl animated:YES completion:nil];

    NSLog(@"%@", image);

    [postTableView attachButtonInvoked];
    postView.postImageView.image = image;

}

到目前为止，我正在获取图像。但我无法成功拨打attachButtonInvoked;它没有透露UIImageView并设置图片。

Answer 1

看起来你可能在这里实例化新的视图控制器

RGPostTableViewController *postTableView = [self.storyboard instantiateViewControllerWithIdentifier:@"postTableView"];
RGPostViewController *postView = [self.storyboard instantiateViewControllerWithIdentifier:@"postView"];
UINavigationController *postControl = [self.storyboard instantiateViewControllerWithIdentifier:@"postControl"];

而不是使用已经创建过的那个。相反，尝试获取对已经实例化的视图控制器的引用，以便您可以在图像视图上设置图像。

无法从didFinishPickingMediaWithInfo进行显式方法调用

1 个答案: