Question

我使用简单图像添加了旋转和捏合手势识别器（从对象库中添加）。我使用了2条带有2个IBAction的基本简单线来旋转和缩放图像。一切正常，但问题是：每个手势重置另一个值。如果我旋转图像并在我进行捏合后，旋转值将恢复正常，反之亦然。我想保留旋转和缩放的值。我希望清楚这个问题。谢谢大家。这里是代码：

//  ImageController.swift
//  SpImage
//
//  Created by Ronny Westwood on 06/09/17.
//  Copyright © 2017 RW2017. All rights reserved.
//

import UIKit

class ImageController: UIViewController {

    @IBOutlet weak var Image: UIImageView!

/// IMAGE OUTLET

    override func viewDidLoad() {
        super.viewDidLoad()
    }

    @IBAction func rotationImage(_ sender: UIRotationGestureRecognizer) {
        Image.transform = view.transform.rotated(by: sender.rotation)
    }

    @IBAction func zoomImage(_ sender: UIPinchGestureRecognizer) {
        Image.transform = CGAffineTransform(scaleX: sender.scale, y: sender.scale)
    }

/// IMAGE ROTATION & IMAGE ZOOM

        override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }
}

这里的观点： View

Answer 1

我用这段代码解决了这个问题。一切正常

class ImageController: UIViewController, UIGestureRecognizerDelegate {

    var delegate: UIGestureRecognizerDelegate?

    @IBOutlet weak var Image: UIImageView!

    override func viewDidLoad()
    {
        super.viewDidLoad()
    }

    @IBAction func rotationImage(_ gestureRecognizer : UIRotationGestureRecognizer)
    {
        if gestureRecognizer.state == .began || gestureRecognizer.state == .changed
        {
           gestureRecognizer.view?.transform = (gestureRecognizer.view?.transform.rotated(by: gestureRecognizer.rotation))!
           gestureRecognizer.rotation = 0.0;
        }
    }

    @IBAction func zoomImage(_ gestureRecognizer : UIPinchGestureRecognizer)
    {
        if gestureRecognizer.state == .began || gestureRecognizer.state == .changed
        {
           gestureRecognizer.view?.transform = (gestureRecognizer.view?.transform.scaledBy(x: gestureRecognizer.scale, y: gestureRecognizer.scale))!
           gestureRecognizer.scale = 1.0;
        }
    }

/// IMAGE ROTATION & IMAGE SCALE

    func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool
    {
        return true
    }

/// ALLOW SIMULTANEOUS GESTURES DELEGATE

        override func didReceiveMemoryWarning()
    {
        super.didReceiveMemoryWarning()
    }
}

（是的，是AppleDeveloper关于GestureRecognizer的代码）谢谢所有人。代码上的另一块砖。

手势识别器值重置

1 个答案: