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所以我遇到了我的相機凍結問題。當它被稱爲第一次它工作得很好。並在按鈕上顯示我的圖像。但是，如果我再回到同一個按鈕來重新調用相機或調用相機的頁面上的任何其他按鈕，它會啓動相機，但不是黑屏。相機實際上並沒有出現。這裏是我使用的代碼...幫助會很好。Ios，相機在啓動時凍結（黑屏）
func imagePickerController(picker: UIImagePickerController!, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]!) {
let image = info[UIImagePickerControllerOriginalImage] as UIImage
pickedImage = image
if let buttonToSet = buttonToSet {
switch buttonToSet {
case .Button1 :
p1Image = pickedImage
p1ImageButton.setImage(pickedImage, forState: UIControlState.Normal)
case .Button2 :
p2Image = pickedImage
p2ImageButton.setImage(pickedImage, forState: UIControlState.Normal)
case .Button3 :
p3Image = pickedImage
p3ImageButton.setImage(pickedImage, forState: UIControlState.Normal)
case .Button4 :
p4Image = pickedImage
p4ImageButton.setImage(pickedImage, forState: UIControlState.Normal)
}
}
self.dismissViewControllerAnimated(true, completion: nil)
scrollView.setContentOffset(CGPointMake(0, -65), animated: true)
}
func imagePickerControllerDidCancel(picker: UIImagePickerController) {
dismissViewControllerAnimated(true, completion: nil)
scrollView.setContentOffset(CGPointMake(0, -65), animated: true)
}
func promptForSource(){
let actionSheet = UIActionSheet(title: "Image Source", delegate: self, cancelButtonTitle: "Cancel", destructiveButtonTitle: nil, otherButtonTitles: "Camera", "Photo Roll")
actionSheet.showInView(self.view)
}
func actionSheet(actionSheet: UIActionSheet, clickedButtonAtIndex buttonIndex: Int) {
if buttonIndex != actionSheet.cancelButtonIndex {
if buttonIndex != actionSheet.firstOtherButtonIndex {
promptForCamera()
}
else{
promptForPhotoRoll()
}
}
}
func promptForCamera(){
let controller = UIImagePickerController()
controller.sourceType = UIImagePickerControllerSourceType.Camera
controller.delegate = self
presentViewController(controller, animated: true, completion: nil)
}
func promptForPhotoRoll(){
let controller = UIImagePickerController()
controller.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
controller.delegate = self
presentViewController(controller, animated: true, completion: nil)
}
@IBAction func p1PhotoTapped(sender: AnyObject) {
buttonToSet = .Button1
if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera){
promptForSource()
}else{
promptForPhotoRoll()
}
}
@IBAction func p2PhotoTapped(sender: AnyObject) {
buttonToSet = .Button2
if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera){
promptForSource()
}else{
promptForPhotoRoll()
}
}
@IBAction func p3PhotoTapped(sender: AnyObject) {
buttonToSet = .Button3
if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera){
promptForSource()
}else{
promptForPhotoRoll()
}
}
@IBAction func p4PhotoTapped(sender: AnyObject) {
buttonToSet = .Button4
if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera){
promptForSource()
}else{
promptForPhotoRoll()
}
}