XCode7画图－touches不支持的解决方法
因为Xcode升级，最新版不支持这个touches方法了，因此，需要在之前的基础上做一些调整：
//
// DrawBoardView.swift
// R06DrawShapes
//
// Created by SteveKing on 16/4/18.
// Copyright © 2016年 rancho. All rights reserved.
//
import UIKit
class DrawBoardView: UIView {
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
}
var path = CGPathCreateMutable()
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
// let p = touches.anyObject.localtionInView(self)
// let p = (touches as NSSet).anyObject()?.locationInView(self)
// CGPathMoveToPoint(path, nil, p.x, p.y)
let touch:UITouch = touches.first as UITouch!
let tmp_point:CGPoint = touch.locationInView(touch.view)
CGPathMoveToPoint(path, nil, tmp_point.x, tmp_point.y)
}
override func touchesMoved(touches: Set<UITouch>, withEvent event: UIEvent?) {
// let p = touches.anyObject.localtionInView(self)
// let p = (touches as NSSet).anyObject()?.locationInView(self)//
// CGPathAddLineToPoint(path, nil, p!.x, p!.y)
let touch:UITouch = touches.first as UITouch!
let tmp_point:CGPoint = touch.locationInView(touch.view)
CGPathAddLineToPoint(path, nil, tmp_point.x, tmp_point.y)
self.setNeedsDisplay()
}
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
override func drawRect(rect: CGRect) {
// Drawing code
// let context = UIGraphicsGetCurrentContext()
//
// let path = CGPathCreateMutable()
//
// CGPathMoveToPoint(path, nil, 100, 100)
// CGPathAddLineToPoint(path, nil, 200, 200)
// CGContextAddPath(context, path)
// CGContextStrokePath(context)
let context = UIGraphicsGetCurrentContext()
CGContextAddPath(context, path)
CGContextStrokePath(context)
}
}
效果：
重点就是：
let touch:UITouch = touches.first as UITouch!
let tmp_point:CGPoint = touch.locationInView(touch.view)
CGPathMoveToPoint(path, nil, tmp_point.x, tmp_point.y)
和：
let touch:UITouch = touches.first as UITouch! let tmp_point:CGPoint = touch.locationInView(touch.view) CGPathAddLineToPoint(path, nil, tmp_point.x, tmp_point.y)