Question

我遵循了使用UIImagePickerController自定义叠加层的apple docs方法。现在它非常简单，我在叠加视图上只有一个按钮。此按钮的目标为takePic。唯一的问题是，由于我没有使用默认的相机控件，因此在捕获图片后永远不会调用imagePickerController委托方法，

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

我认为这种方法通常在用户捕获图片后点击默认叠加层并点击＆＃34;选择照片＆＃34;。然而，在这个叠加层中，我想要的只是一个＆＃34;拍照＆＃34;拍摄照片并保存的按钮。

这是我的代码：

-(void)takePic
{
    [cameraUI takePicture];
    NSLog(@"take pic called");
}

// For responding to the user accepting a newly-captured picture or movie
- (void) imagePickerController: (UIImagePickerController *) picker
 didFinishPickingMediaWithInfo: (NSDictionary *) info {
    NSLog(@"Finished picking media");
    NSString *mediaType = [info objectForKey: UIImagePickerControllerMediaType];
    UIImage *originalImage, *imageToSave;

    // Handle a still image capture
    if (CFStringCompare ((CFStringRef) mediaType, kUTTypeImage, 0)
        == kCFCompareEqualTo) {
        originalImage = (UIImage *) [info objectForKey:
                                     UIImagePickerControllerOriginalImage];

        imageToSave = originalImage;
        NSLog(@"image Saved");

        // Save the new image (original or edited) to the Camera Roll
        UIImageWriteToSavedPhotosAlbum (imageToSave, nil, nil , nil);
    }

    // Handle a movie capture
    if (CFStringCompare ((CFStringRef) mediaType, kUTTypeMovie, 0)
        == kCFCompareEqualTo) {

        NSString *moviePath = [[info objectForKey:
                                UIImagePickerControllerMediaURL] path];

        if (UIVideoAtPathIsCompatibleWithSavedPhotosAlbum (moviePath)) {
            UISaveVideoAtPathToSavedPhotosAlbum (
                                                 moviePath, nil, nil, nil);
        }
    }

    [[picker parentViewController] dismissModalViewControllerAnimated: YES];
}

正如我之前提到的，imagePickerController:didFinishPickingMediaWithInfo:永远不会被调用。如何将图片保存到相机胶卷？

Answer 1

您是否将对象设为delegate的{{1}}？

如果你的cameraUI是ImagePicker，你应该在某个时候，在呈现cameraUI之前，让代码(UIImagePickerController *)或任何控制器都有委托方法。

使用带自定义叠加的UIImagePickerController捕获和保存图片

1 个答案: