更改函數外的var值

我宣佈var imagePicked = 0位於我的課程頂部。現在，當我改變imagePicked的價值IBAction爲內喜歡這裏：更改函數外的var值

import UIKit

類的ViewController：UIViewController中，UIImagePickerControllerDelegate，UINavigationControllerDelegate {

@IBOutlet weak var titelbild: UIButton! 
@IBOutlet weak var profilbild: UIButton! 


let imagePicker = UIImagePickerController() 
var imagePicked = 0 



override func viewDidLoad() { 
    super.viewDidLoad() 


    imagePicker.delegate = self 
// imagePicker.allowsEditing = false 
    // imagePicker.sourceType = .PhotoLibrary 


} 

override func didReceiveMemoryWarning() { 
    super.didReceiveMemoryWarning() 
    // Dispose of any resources that can be recreated. 
} 


@IBAction func titelbildtapped(sender: AnyObject) { 


// if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.PhotoLibrary){ 


    imagePicked == 1 

     imagePicker.allowsEditing = false 
     imagePicker.sourceType = .PhotoLibrary 


     self.presentViewController(imagePicker, animated: true, completion: nil) 



    // } 


} 


@IBAction func profilbildtapped(sender: AnyObject) { 


    imagePicked == 2 

     imagePicker.allowsEditing = false 
     imagePicker.sourceType = .PhotoLibrary 


     self.presentViewController(imagePicker, animated: true, completion: nil) 

    print ("output") 

} 





func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) { 
    if let pickedImage = info[UIImagePickerControllerOriginalImage] as? UIImage { 


if imagePicked == 1 { 

    titelbild.setImage(pickedImage, forState: UIControlState.Normal) 
     // titelbild.imageView?.image = pickedImage 

} else if imagePicked == 2 { 
     profilbild.setImage(pickedImage, forState: .Normal)  } 

    } 
    dismissViewControllerAnimated(true, completion: nil) 
} 



func imagePickerControllerDidCancel(picker: UIImagePickerController) { 
    dismissViewControllerAnimated(true, completion: nil) 
}

}

imagePicked的價值似乎是仍然是0而不是2.我怎樣才能改變它的值，所以它不僅在函數內部改變了我改變了它？

來源

2016-03-20 J.Vongehr

你能展示你的班級的完整樣本嗎？通常導致你的代碼應該工作 - 除了示例函數應該像'func example（）{...}'... –

你真的寫imagePicked == 2而不是imagePicked = 2？ – FredericP

在您的'profilbildtapped'函數中放置一個'print'輸出，以查看它是否真的在您的圖像視圖中被調用... –

好的。問題出在您的titelbildtapped/profilbildtapped函數中。有你有與單個=代替雙==它檢查是否相等分配值/。

so change imagePicked == 1/imagePicked == 2 to imagePicked = 1/imagePicked = 2在這些功能，它應該工作！

來源

2016-03-20 13:25:13

不用擔心。很高興我能幫上忙。 :) –

更改函數外的var值

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