使用Swift 2.0将图片保存到照片库

Question

我遇到了上面用红色标出的问题。当我拍照并按下使用照片时，它不会让我将所拍摄的照片保存到iPad的相册中。我已经尝试了其他方法，但作为iOS开发的初学者，我不确定如何解决这个问题。有时我也会收到sigabrt错误。

- user5168832

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你实现了回调方法吗？func image(image: UIImage, didFinishSavingWithError error: NSError?, contextInfo:UnsafePointer<Void>) { ... } - TotoroTotoro

你遇到了具体的错误是什么？它在你的图片中被裁剪掉了。 - mszaro

Answer 1

你是否提供了完成选择器？

...
UIImageWriteToSavedPhotosAlbum(imageView.image!, self, "image:didFinishSavingWithError:contextInfo:", nil) 
...



func image(image: UIImage, didFinishSavingWithError error: NSError?, contextInfo:UnsafePointer<Void>) {
    if error == nil {
        let ac = UIAlertController(title: "Saved!", message: "Your altered image has been saved to your photos.", preferredStyle: .Alert)
        ac.addAction(UIAlertAction(title: "OK", style: .Default, handler: nil))
        presentViewController(ac, animated: true, completion: nil)
    } else {
        let ac = UIAlertController(title: "Save error", message: error?.localizedDescription, preferredStyle: .Alert)
        ac.addAction(UIAlertAction(title: "OK", style: .Default, handler: nil))
        presentViewController(ac, animated: true, completion: nil)
    }
}

- Sanjan Piya

Answer 2

你可以使用这个；

@IBAction func downloadButton(_ sender: Any) {
    let imageRepresentation = UIImagePNGRepresentation(photoView.image!)
    let imageData = UIImage(data: imageRepresentation!)
    UIImageWriteToSavedPhotosAlbum(imageData!, nil, nil, nil)

    let alert = UIAlertController(title: "Completed", message: "Image has been saved!", preferredStyle: .alert)
    let action = UIAlertAction(title: "Ok", style: .default, handler: nil)
    alert.addAction(action)
    self.present(alert, animated: true, completion: nil)
}

- Celil Bozkurt