ios 可移动改变尺寸的view图

你可以使用 iOS 中的 UIView 类来创建一个可移动和可改变尺寸的视图。你可以使用 UIPanGestureRecognizer 和 UIPinchGestureRecognizer 来实现移动和缩放的手势识别。

以下是一个示例代码，可以创建一个可移动和可改变尺寸的视图：

class ResizableView: UIView {

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        setupGestureRecognizer()
    }

    override init(frame: CGRect) {
        super.init(frame: frame)
        setupGestureRecognizer()
    }

    private func setupGestureRecognizer() {
        let panGestureRecognizer = UIPanGestureRecognizer(target: self, action: #selector(handlePanGesture(_:)))
        self.addGestureRecognizer(panGestureRecognizer)

        let pinchGestureRecognizer = UIPinchGestureRecognizer(target: self, action: #selector(handlePinchGesture(_:)))
        self.addGestureRecognizer(pinchGestureRecognizer)
    }

    @objc func handlePanGesture(_ gestureRecognizer: UIPanGestureRecognizer) {
        let translation = gestureRecognizer.translation(in: self.superview)
        center = CGPoint(x: center.x + translation.x, y: center.y + translation.y)
        gestureRecognizer.setTranslation(CGPoint.zero, in: self.superview)
    }

    @objc func handlePinchGesture(_ gestureRecognizer: UIPinchGestureRecognizer) {
        if gestureRecognizer.state == .changed {
            let scale = gestureRecognizer.scale
            transform = transform.scaledBy(x: scale, y: scale)
            gestureRecognizer.scale = 1.0
        }
    }
}

你可以在你的视图控制器中使用以下代码来创建并添加这个视图：

let resizableView = ResizableView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))
resizableView.backgroundColor = UIColor.red
self.view.addSubview(resizableView)