以 ActionSheet 样式访问图片库答案

【问题标题】：Accessing picture library in an ActionSheet style以 ActionSheet 样式访问图片库
【发布时间】：2015-07-17 14:01:33
【问题描述】：

我正在尝试在注册视图控制器中创建 profilePic。 profilePic 是 UIImageView 类型。我希望能够点击它，以便它立即以 ActionSheet 样式调出照片库。并且还有一个图像框有一个按钮来访问相机。这可能吗？

import UIKit

class SignUpViewController: UIViewController, UITextFieldDelegate, UIPickerViewDataSource, UIPickerViewDelegate {

    @IBOutlet weak var profilePic: UIImageView!


    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.

        // PROFILE PICTURE

        let tapGesture = UITapGestureRecognizer(target: self, action: "imageTapped:")

        profilePic.addGestureRecognizer(tapGesture)
        profilePic.userInteractionEnabled = true

    }


    func imageTapped(gesture:UIGestureRecognizer) {
        if let profile1Pic = gesture.view as? UIImageView {
            print("Image Tapped")
        }
    }

【问题讨论】：

标签： xcode swift uiimageview actionsheetpicker

【解决方案1】：

试试下面的代码：

import UIKit

class SignUpViewController: UIViewController, UIImagePickerControllerDelegate {

@IBOutlet weak var profilePic: UIImageView!


override func viewDidLoad() {
  super.viewDidLoad()

  let tapGesture = UITapGestureRecognizer(target: self, action: "imageTapped:")

  profilePic.addGestureRecognizer(tapGesture)
  profilePic.userInteractionEnabled = true

}


func imageTapped(gesture:UIGestureRecognizer) {
  if let profile1Pic = gesture.view as? UIImageView {
      print("Image Tapped")
      showActionSheet()
  }
}
func camera()
{
    var myPickerController = UIImagePickerController()
    myPickerController.delegate = self;
    myPickerController.sourceType = UIImagePickerControllerSourceType.Camera

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

}

func photoLibrary()
{

    var myPickerController = UIImagePickerController()
    myPickerController.delegate = self;
    myPickerController.sourceType = UIImagePickerControllerSourceType.PhotoLibrary

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

}

func showActionSheet() {
    let actionSheet = UIAlertController(title: nil, message: nil, preferredStyle: UIAlertControllerStyle.ActionSheet)

    actionSheet.addAction(UIAlertAction(title: "Camera", style: UIAlertActionStyle.Default, handler: { (alert:UIAlertAction!) -> Void in
        self.camera()
    }))

    actionSheet.addAction(UIAlertAction(title: "Gallery", style: UIAlertActionStyle.Default, handler: { (alert:UIAlertAction!) -> Void in
        self.photoLibrary()
    }))

    actionSheet.addAction(UIAlertAction(title: "Cancel", style: UIAlertActionStyle.Cancel, handler: nil))

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

}

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

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

}
}

它在我身边工作..希望能为你做一些事情！

【讨论】：

它非常适合我。非常感谢你。我只需要添加 UINavigationControllerDelegate
@MartinQ 欢迎，如果它是完美的，那么请介意投票给我的答案:)
显然，我的名声不够高。我很快就会……和我一起裸露。再次感谢您
我如何启用allowEditing模式，以便用户可以放大和缩小以将图像裁剪到理想的尺寸？例如，在上面的代码中，我在 photoLibrary 函数和相机函数以及 func imagePickerController 函数中添加了 myPickerController.allowsEditing = true ，我将 progilePic 图像操作的调用更改为 profilePic.image = info[UIImagePickerControllerEditedImage] 为？ UIImage
@MartinQ 我还没有尝试编辑图像。所以你可以参考this或this

【解决方案2】：

我最近发布了一个 GitHub 存储库来处理这种类型的操作表。

你可以从这里下载这个课程：MSActionSheet

然后简单地写：

编辑：

● 现在支持 iPad

MSActionSheet(viewController: self, sourceView: sender).showFullActionSheet {
       sender.setImage($0, for: .normal)
}

【讨论】：

【解决方案3】：

MSActionSheet：是设置用户头像的最佳库。

我使用了这个库 但它在 iPad中不受支持所以我自定义某些功能以支持 iPad 和 Display with popOverController。

定制步骤以下。

用showFullActionSheet替换函数

func showFullActionSheet(on vc : UIViewController, over btn : UIButton,handler : @escaping (_ : UIImage?) -> Void) {
    let sheet = create().addLibrary().addFrontCamera().addRearCamera().addCancelButton()
    sheet.show(on: vc,over: btn){ (image : UIImage?) in
        handler(image)
    }
}

在函数showvc.present(MSActionSheet.sheet!, animated: true, completion: nil)之前添加代码

if UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiom.pad {
        if let presenter = MSActionSheet.sheet?.popoverPresentationController {
            presenter.sourceView = btn
            presenter.sourceRect = btn.bounds
        }
    }

在函数handlerclientVC?.present(picker, animated: true, completion: nil)之前添加以下代码

if UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiom.pad {
        picker.modalPresentationStyle = .popover
        if let presenter = picker.popoverPresentationController {
            presenter.sourceView = sourceBtn
            presenter.sourceRect = sourceBtn!.bounds
        }
    }

如何使用

let msActionSheet = MSActionSheet.instance
    msActionSheet.showFullActionSheet(on: self,over: btn){ (image) in
        btn.setImage(image, for: .normal)
    }
    msActionSheet.tintColor(color: Constants.kColorBluish)

【讨论】：

请查看新版本，支持iPad

【解决方案4】：

Swift 3x：

 class yourClassName:UIActionSheetDelegate,UIImagePickerControllerDelegate,UINavigationControllerDelegate {


 @IBAction func yourButtonName(_ sender: UIButton) {


        let pickerView = UIImagePickerController()
        pickerView.delegate = self
        pickerView.allowsEditing = true


        let actionSheetControllerIOS8: UIAlertController = UIAlertController(title: "Please select", message: nil, preferredStyle: .actionSheet)

        let cancelActionButton: UIAlertAction = UIAlertAction(title: "Cancel", style: .cancel) { action -> Void in
            print("Cancel") //Cancel
        }
        actionSheetControllerIOS8.addAction(cancelActionButton)

        let saveActionButton: UIAlertAction = UIAlertAction(title: "Take Photo", style: .default) { action -> Void in

            print("Take Photo") //Will open Camera
            if UIImagePickerController.isSourceTypeAvailable(.camera) {

                pickerView.sourceType = .camera
                self.present(pickerView, animated: true, completion: { _ in })
            }

        }
        actionSheetControllerIOS8.addAction(saveActionButton)

        let deleteActionButton: UIAlertAction = UIAlertAction(title: "Camera Roll", style: .default) { action -> Void in

            print("Camera Roll") //Will open Gallery

            pickerView.sourceType = .photoLibrary
            self.present(pickerView, animated: true, completion: { _ in })

        }
        actionSheetControllerIOS8.addAction(deleteActionButton)

        let deleteActionButton2: UIAlertAction = UIAlertAction(title: "Import from Facebook", style: .default) { action -> Void in
            print("Import from Facebook")
        }

        actionSheetControllerIOS8.addAction(deleteActionButton2)
        self.present(actionSheetControllerIOS8, animated: true, completion: nil)

    }

// MARK: - UIImagePickerControllerDelegate Methods

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

//print(info)
if let pickedImage = info[UIImagePickerControllerEditedImage] as? UIImage {

    //print(pickedImage)

    yourImageView.contentMode = .scaleAspectFit
    yourImageView.image = pickedImage

}
dismiss(animated: true, completion: nil)
}

}

【讨论】：