Question

我想将相机中已保存的图像或已保存的图像保存到iPhone中的照片库在这里我实现了一些代码，但是我无法在按钮点击上实现它，而且它正在崩溃。

我对iPhone编程方面很陌生。有谁知道我做错了什么？

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info:(id)sender{
    UIImage *selectedImage;
    NSURL *mediaUrl;

    mediaUrl = (NSURL *)[info valueForKey:UIImagePickerControllerMediaURL];
    if (mediaUrl == nil)
    {
        selectedImage = (UIImage *) [info valueForKey:UIImagePickerControllerEditedImage];
        if (selectedImage == nil)
        {
            selectedImage = (UIImage *) [info valueForKey:UIImagePickerControllerOriginalImage];
            NSLog(@"Original image picked.");
        }
        else
        {
            NSLog(@"Edited image picked.");
        }
    }
    else
    {
        NSLog(@"Video picked. Not yet implemented.");
    }

    [picker dismissModalViewControllerAnimated:YES];
    imageView.image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];

    if((UIButton *) sender == savePhotoBtn) {
        UIImageWriteToSavedPhotosAlbum(selectedImage, self, @selector(image:didFinishSavingWithError:contextInfo:), nil);
    }
}

Answer 1

我的功能正在执行...我用printf语句检查..

/*  Globaly declared  */
NSDictionary *info1;
UIImagePickerController * picker;

-(IBAction) savePhoto:(id) sender
{
    UIImage *selectedImage;
    NSURL *mediaUrl;
    mediaUrl = (NSURL *)[info1 valueForKey:UIImagePickerControllerMediaURL];
    if (mediaUrl == nil)
    {
        selectedImage = (UIImage *) [info1 valueForKey:UIImagePickerControllerEditedImage];
        if (selectedImage == nil)
        {
            selectedImage = (UIImage *) [info1 valueForKey:UIImagePickerControllerOriginalImage];
            NSLog(@"Original image picked.");
        }
        else
        {
            NSLog(@"Edited image picked.");
        }
    }
    else
    {
        NSLog(@"Video picked. Not yet implemented.");
    }
    picker.allowsImageEditing = YES;
    //if((UIButton *) sender == savePhotoBtn) {
    UIImageWriteToSavedPhotosAlbum(selectedImage, self, @selector(image:didFinishSavingWithError:contextInfo:), nil);
    //}
    printf(" %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% ");
}

单击按钮时保存图像

1 个答案: