0
我试图编写一个应用程序，需要一个屏幕，你可以采取多张照片。我使用了http://makeapppie.com/2015/11/04/how-to-make-xib-based-custom-uiimagepickercontroller-cameras-in-swift/的代码示例。我的imagePickerController didFinishPickingMediaWithInfo新被调用
它似乎工作正常，但我的imagePickerController didFinishPickingMediaWithInfo新被调用。我收到来自Xcode的错误消息“将未呈现的视图快照为空快照，确保您的视图在屏幕更新后的快照或快照前至少呈现过一次。”在我看来，这可能是问题所在，我已经使用了它，但没有任何明智之举。很多人写这是一个苹果的错误，我没有找到任何人提供解决方案。
所以，不要任何人知道这是否是Xcode错误这是我的问题，而在这种情况下，有一个解决方案或有我写的东西错在我的代码：
import UIKit
class ViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate, CustomOverlayDelegate {
var picker = UIImagePickerController()
@IBAction func shootPhoto(sender: AnyObject) {
if UIImagePickerController.availableCaptureModesForCameraDevice(.Rear) != nil {
picker = UIImagePickerController() //make a clean controller
picker.allowsEditing = false
picker.sourceType = UIImagePickerControllerSourceType.Camera
picker.cameraCaptureMode = .Photo
picker.showsCameraControls = false
//customView stuff
let customViewController = CustomOverlayViewController(
nibName:"CustomOverlayViewController",
bundle: nil
)
let customView:CustomOverlayView = customViewController.view as! CustomOverlayView
customView.frame = self.picker.view.frame
customView.cameraLabel.text = "Hello Cute Camera"
customView.delegate = self
//presentation of the camera
picker.modalPresentationStyle = .FullScreen
presentViewController(picker, animated: true,completion: {
self.picker.cameraOverlayView = customView
})
} else { //no camera found -- alert the user.
let alertVC = UIAlertController(
title: "No Camera",
message: "Sorry, this device has no camera",
preferredStyle: .Alert)
let okAction = UIAlertAction(
title: "OK",
style:.Default,
handler: nil)
alertVC.addAction(okAction)
presentViewController(
alertVC,
animated: true,
completion: nil)
}
}
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
print("didFinishPickingMediaWithInfo")
let chosenImage = info[UIImagePickerControllerOriginalImage] as! UIImage //get the image from info
UIImageWriteToSavedPhotosAlbum(chosenImage, self,nil, nil) //save to the photo library
}
//What to do if the image picker cancels.
func imagePickerControllerDidCancel(picker: UIImagePickerController) {
dismissViewControllerAnimated(true, completion: nil)
}
//MARK: Custom View Delegates
func didCancel(overlayView:CustomOverlayView) {
picker.dismissViewControllerAnimated(true, completion: nil)
print("dismissed!!")
}
func didShoot(overlayView:CustomOverlayView) {
picker.takePicture()
overlayView.cameraLabel.text = "Shot Photo"
print("Shot Photo")
}
func weAreDone(overlayView: CustomOverlayView) {
picker.dismissViewControllerAnimated(true,
completion: nil)
print("We are done!")
}
}