Question

我有一个允许用户拍照的应用程序，当拍摄照片时（推动动作）应该导航到另一个视图控制器，以允许用户放弃，编辑或保存照片。我尝试从didFinishPickingMediaWithInfo方法中的摄像机视图控制器中进行切换，如下所示：

- (void) imagePickerController: (UIImagePickerController *) picker didFinishPickingMediaWithInfo: (NSDictionary *) info {

    NSString *mediaType = [info objectForKey: UIImagePickerControllerMediaType];
    UIImage *originalImage, *editedImage, *imageToSave;

    // Handle a still image capture
    if (CFStringCompare ((CFStringRef) mediaType, kUTTypeImage, 0) == kCFCompareEqualTo) {

        editedImage = (UIImage *) [info objectForKey:
                               UIImagePickerControllerEditedImage];
        originalImage = (UIImage *) [info objectForKey:
                                 UIImagePickerControllerOriginalImage];

        if (editedImage) {
            imageToSave = editedImage;
        } else {
            imageToSave = originalImage;
        }

        // Save the new image to camera roll (will change later)
        UIImageWriteToSavedPhotosAlbum (imageToSave, nil, nil , nil);
        [self.capturedImages addObject: imageToSave];

        _imageView.image = [self imageToSave:imageToSave];
    }


CaptureViewController *capture = [[CaptureViewController alloc] init];
[self performSegueWithIdentifier:@"takePic" sender:self];

}

按下按钮时会调用didFinishPickingMediaWithInfo方法，提示[_picker takePicture];这是我准备segue方法：

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller

    //this is just a temporary fix
    if ([segue.identifier isEqualToString:@"takePic"]) {
        CaptureViewController *destViewController = segue.destinationViewController;
    }
}

segue标识符是＆＃34; takePic＆＃34;，因此不是问题。那太简单了。当我尝试执行segue时，没有任何反应。相机仍会显示，imagePickerController's cameraOverlayView中的两个按钮仍然存在（尽管它们不起作用）。非常感谢帮助！

Answer 1

我没有看到你在哪里解雇图像选择器控制器。 UIImagePickerController pretty picky是关于你如何展示它的[picker dismissViewControllerAnimated:YES completion:nil];。因此，请确保以预期的方式呈现它。捕获或选择图像时，还需要关闭图像选择器控制器。既然你没有看到它消失，我强烈怀疑你不会在任何地方解雇它。

添加如下行：

... didFinishPickingMediaWithInfo:

到您的{{1}}方法。

视图控制器之间无法正常运行

1 个答案: