如何拍照并将其传递给另一个 viewcontroller

Question

我想使用设备的camera.I拍照希望将图像传递给另一个viewcontroller使用segue.The图像需要显示在第二个viewcontroller only.But 图像需要保存到设备的照片中 library.How 我可以使用图像选择器实现吗？

我试过的代码如下所示

 func takePhoto(sender : UIButton)
 {
    if (UIImagePickerController.isSourceTypeAvailable(.Camera))
    {
        if UIImagePickerController.availableCaptureModesForCameraDevice(.Rear) != nil {
            imagePicker.allowsEditing = false
            imagePicker.sourceType = .Camera
            imagePicker.cameraCaptureMode = .Photo
            presentViewController(imagePicker, animated: true, completion: {})
        } else {
            print("Rear camera doesn't exist Application cannot access the camera.")
        }
    } else {
        print("Camera inaccessable Application cannot access the camera.")
    }

 }

func imagePickerController(picker: UIImagePickerController, didFinishPickingImage image: UIImage, editingInfo: [String : AnyObject]?)
{
    TakenImage = image
    let selectorToCall = Selector("imageWasSavedSuccessfully:didFinishSavingWithError:context:")
    UIImageWriteToSavedPhotosAlbum(TakenImage!, self, selectorToCall, nil)

}

func imagePickerControllerDidCancel(picker: UIImagePickerController)
{
    print("User canceled image")
    dismissViewControllerAnimated(true, completion: {
        // Anything you want to happen when the user selects cancel
    })
}

TakenImage 传递给下一个 viewcontroller.But 图像未出现 there.The 图像也未保存库

用于传递的代码如下所示

func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath)
{
    if (indexPath.row == 0)
    {
    let controller = self.storyboard!.instantiateViewControllerWithIdentifier("NoteDetailViewController") as! NoteDetailViewController
        controller.takinPhoto = true
        if(noteAlreadyEntered == true)
        {
            if (note != "")
            {
                controller.content = note
            }
            controller.takenImage = TakenImage
            if (self.tags != "")
            {
                controller.tagsTextField.text = self.tags
            }
        }
        else
        {
            controller.takenImage = TakenImage
            if (self.tags != "")
            {
                controller.tagsTextField.text = self.tags
            }
        }

    self.navigationController!.pushViewController(controller, animated: true)
    }
}

如何解决这个错误？

Answer 1

您需要先确定图像是被单击还是从图库中选择的。如果单击将 bool 值更改为 yes 并在其中使用 underwritten code 。这会将您的图像保存在图库中：

func imagePickerController（选择器：UIImagePickerController，didFinishPickingMediaWithInfo 信息：[String：AnyObject]） { 选择器.dismissViewControllerAnimated（真，完成：无）

    imageCLicked  = info[UIImagePickerControllerOriginalImage] as? UIImage

让 imageData = UIImageJPEGRepresentation(imageCLicked, 0.6) 让 compressedJPGImage = UIImage(data: imageData!) ALAssetsLibrary().writeImageToSavedPhotosAlbum(compressedJPGImage!.CGImage, orientation: ALAssetOrientation(rawValue: compressedJPGImage!.imageOrientation.rawValue)!, completionBlock:{ (path:NSURL!, error:NSError!) -> 无效 print("(path)") //在这里你会得到你的路径 }) }

希望对你有用。

Answer 2

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {

        let image = info[UIImagePickerControllerOriginalImage] as? UIImage 
        self.imagePickerController.dismissViewControllerAnimated(true, completion: nil)
}

使用 prepareforsegue 传递图像：

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
        if segue.identifier == "yoursegueidentifier" {

            let dvc = segue.destinationViewController as! yourViewController
            dvc.image = image
        }
    }

如何拍照并将其传递给另一个 viewcontroller

How to take a photo and pass it to another viewcontroller

photos

uiimagepickercontroller

ios

swift