代码之家 › 专栏 › 技术社区 › Ronny Westwood

手势识别器值重置

uigesturerecognizer xcode8 swift3 ios

Ronny Westwood · 技术社区 · 7 年前

我有一个简单的图像视图,添加了旋转和挤压手势识别器(从对象库添加)。我使用了2条基本的简单线和2个IBAction来旋转和缩放图像。所有动作都很好,但问题是:每个手势都重置了另一个值。如果我旋转图像,在进行挤压后,旋转值将恢复为法线,反之亦然。我想保留旋转和缩放的值。我希望问题是清楚的。谢谢大家。代码如下:

//  ImageController.swift
//  SpImage
//
//  Created by Ronny Westwood on 06/09/17.
//  Copyright Â© 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()
    }
}

这里是视图: View

1 回复 | 直到 7 年前

Ronny Westwood 7 年前

我用这个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关于手势识别器的代码) 谢谢大家。

推荐文章

Drashti · 下载较低版本pod文件

7 年前

Barkha Jariwala · xcode 8.0中的电话模拟器大小

7 年前

Claire Cho · 线程1:信号SIGABRT,黑屏,“无法加载捆绑包中的NIB”[重复]

7 年前

ecth · CocoaLumberjack-通过子类化LogFileManager更改日志文件名

7 年前

Nathan C · 如何使用Swift在精灵套件游戏中创建NSTimer?

7 年前

Will Newcombe · 无法将“ViewController”类型的值分配给“SPTAudioStreamingDelegate!”设置Spotify API时

7 年前

Mannopson · NSManagedObject验证和子类

7 年前

user6428350 · 使用用户默认值存储多个值

7 年前

Ronny Westwood · 手势识别器值重置

7 年前

Rohitax Rajguru · 词法或预处理器问题“未找到文件。”

7 年前