drawrect 以适合 uiview 无论大小

Question

我有一个 uiview class 调用自定义绘图 class 方法，其中有一个 drawrect。 drawrect 绘图坐标是为 433x439 的 uiview 绘制的。当此应用程序在 iPad Pro 上打开时，自动布局会更改 uiview 的大小（正确）。但是 drawrect 仍然绘制到旧的 'size'(433x439)，并且不会缩放以填充新的 uiview 边界。

知道如何让它工作吗？我不想再次将它绘制到新坐标。似乎内容模式或应该重绘的东西？注意：我点击这些形状来做其他事情。有人希望帮助我的缩放（？）应该不会影响它，对吗？

    + (void)drawDemos
{

    collectedppaths = [NSMutableArray new];

    //// Color Declarations
    UIColor* color2 = [UIColor colorWithRed: 1 green: 0 blue: 0 alpha: 1];

    //// Group
    {
        //// demo 0 Drawing
        UIBezierPath* demo0Path = [UIBezierPath bezierPath];
        [demo0Path moveToPoint: CGPointMake(35.5, 215.55)];
        [demo0Path addLineToPoint: CGPointMake(86.38, 215.55)];
        [demo0Path addLineToPoint: CGPointMake(86.38, 253.39)];
        [demo0Path addLineToPoint: CGPointMake(35.5, 254.32)];
        [demo0Path addLineToPoint: CGPointMake(35.5, 215.55)];
        [demo0Path closePath];
        [color2 setStroke];
        demo0Path.lineWidth = 5;
        [demo0Path stroke];
        [collectedppaths addObject:demo0Path];


        //// demo 1 Drawing
        UIBezierPath* demo1Path = [UIBezierPath bezierPath];
        [demo1Path moveToPoint: CGPointMake(35.5, 254.79)];
        [demo1Path addLineToPoint: CGPointMake(86.38, 254.79)];
        [demo1Path addLineToPoint: CGPointMake(86.38, 304.76)];
        [demo1Path addLineToPoint: CGPointMake(35.5, 303.36)];
        [demo1Path addLineToPoint: CGPointMake(35.5, 254.79)];
        [demo1Path closePath];
        [color2 setStroke];
        demo1Path.lineWidth = 5;
        [demo1Path stroke];
        [collectedppaths addObject:demo1Path];


        //// demo 3 Drawing
        UIBezierPath* demo3Path = [UIBezierPath bezierPath];
        [demo3Path moveToPoint: CGPointMake(86.38, 254.79)];
        [demo3Path addLineToPoint: CGPointMake(102.71, 256.19)];
        [demo3Path addLineToPoint: CGPointMake(122.78, 260.39)];
        [demo3Path addLineToPoint: CGPointMake(138.19, 266)];
        [demo3Path addLineToPoint: CGPointMake(155.46, 259.46)];
        [demo3Path addLineToPoint: CGPointMake(169.46, 250.12)];
        [demo3Path addLineToPoint: CGPointMake(177.86, 240.78)];
        [demo3Path addLineToPoint: CGPointMake(183.46, 239.37)];
        [demo3Path addLineToPoint: CGPointMake(182.53, 302.9)];
        [demo3Path addLineToPoint: CGPointMake(88.24, 303.83)];
        [demo3Path addLineToPoint: CGPointMake(86.38, 254.79)];
        [demo3Path closePath];
        [color2 setStroke];
        demo3Path.lineWidth = 5;
        [demo3Path stroke];
        [collectedppaths addObject:demo3Path];


        //// demo 6 Drawing
        UIBezierPath* demo6Path = [UIBezierPath bezierPath];
        [demo6Path moveToPoint: CGPointMake(183.93, 238.91)];
        [demo6Path addLineToPoint: CGPointMake(182.53, 308.5)];
        [demo6Path addLineToPoint: CGPointMake(279.61, 307.1)];
        [demo6Path addLineToPoint: CGPointMake(279.61, 254.79)];
        [demo6Path addLineToPoint: CGPointMake(208.2, 254.79)];
        [demo6Path addLineToPoint: CGPointMake(191.4, 241.24)];
        [demo6Path addLineToPoint: CGPointMake(183.93, 238.91)];
        [demo6Path closePath];
        [color2 setStroke];
        demo6Path.lineWidth = 5;
        [demo6Path stroke];
        [collectedppaths addObject:demo6Path];


        //// demo 5 Drawing
        UIBezierPath* demo5Path = [UIBezierPath bezierPath];
        [demo5Path moveToPoint: CGPointMake(182.99, 158.1)];
        [demo5Path addLineToPoint: CGPointMake(279.14, 206.68)];
        [demo5Path addLineToPoint: CGPointMake(279.61, 254.79)];
        [demo5Path addLineToPoint: CGPointMake(208.66, 254.79)];
        [demo5Path addCurveToPoint: CGPointMake(191.4, 241.24) controlPoint1: CGPointMake(208.66, 254.79) controlPoint2: CGPointMake(191.4, 241.71)];
        [demo5Path addCurveToPoint: CGPointMake(183.93, 238.91) controlPoint1: CGPointMake(191.4, 240.78) controlPoint2: CGPointMake(183.93, 238.91)];
        [demo5Path addLineToPoint: CGPointMake(182.99, 158.1)];
        [demo5Path closePath];
        [color2 setStroke];
        demo5Path.lineWidth = 5;
        [demo5Path stroke];
        [collectedppaths addObject:demo5Path];


        //// demo 4 Drawing
        UIBezierPath* demo4Path = [UIBezierPath bezierPath];
        [demo4Path moveToPoint: CGPointMake(218.47, 74.5)];
        [demo4Path addLineToPoint: CGPointMake(225.47, 82.91)];
        [demo4Path addLineToPoint: CGPointMake(232.94, 103.46)];
        [demo4Path addLineToPoint: CGPointMake(241.34, 119.34)];
        [demo4Path addLineToPoint: CGPointMake(260.01, 132.42)];
        [demo4Path addLineToPoint: CGPointMake(281.48, 139.42)];
        [demo4Path addLineToPoint: CGPointMake(279.14, 206.68)];
        [demo4Path addLineToPoint: CGPointMake(182.99, 158.1)];
        [demo4Path addLineToPoint: CGPointMake(182.99, 111.4)];
        [demo4Path addLineToPoint: CGPointMake(179.26, 97.39)];
        [demo4Path addLineToPoint: CGPointMake(218.47, 74.5)];
        [demo4Path closePath];
        [color2 setStroke];
        demo4Path.lineWidth = 5;
        [demo4Path stroke];
        [collectedppaths addObject:demo4Path];


        //// demo 7 Drawing
        UIBezierPath* demo7Path = [UIBezierPath bezierPath];
        [demo7Path moveToPoint: CGPointMake(281.95, 140.36)];
        [demo7Path addLineToPoint: CGPointMake(300.62, 143.16)];
        [demo7Path addLineToPoint: CGPointMake(319.75, 143.16)];
        [demo7Path addLineToPoint: CGPointMake(352.42, 165.58)];
        [demo7Path addLineToPoint: CGPointMake(359.43, 183.79)];
        [demo7Path addLineToPoint: CGPointMake(387.9, 196.4)];
        [demo7Path addLineToPoint: CGPointMake(397.7, 221.16)];
        [demo7Path addLineToPoint: CGPointMake(377.16, 228.63)];
        [demo7Path addLineToPoint: CGPointMake(297.35, 228.63)];
        [demo7Path addLineToPoint: CGPointMake(292.68, 225.83)];
        [demo7Path addLineToPoint: CGPointMake(289.88, 213.69)];
        [demo7Path addLineToPoint: CGPointMake(279.14, 206.68)];
        [demo7Path addLineToPoint: CGPointMake(281.95, 140.36)];
        [demo7Path closePath];
        [color2 setStroke];
        demo7Path.lineWidth = 5;
        [demo7Path stroke];
        [collectedppaths addObject:demo7Path];


        //// demo 8 Drawing
        UIBezierPath* demo8Path = [UIBezierPath bezierPath];
        [demo8Path moveToPoint: CGPointMake(279.61, 206.21)];
        [demo8Path addLineToPoint: CGPointMake(289.88, 213.69)];
        [demo8Path addLineToPoint: CGPointMake(292.68, 225.83)];
        [demo8Path addLineToPoint: CGPointMake(297.35, 228.63)];
        [demo8Path addLineToPoint: CGPointMake(376.7, 228.63)];
        [demo8Path addLineToPoint: CGPointMake(397.7, 221.16)];
        [demo8Path addLineToPoint: CGPointMake(400.5, 228.63)];
        [demo8Path addLineToPoint: CGPointMake(393.5, 253.85)];
        [demo8Path addLineToPoint: CGPointMake(279.61, 253.85)];
        [demo8Path addLineToPoint: CGPointMake(279.61, 206.21)];
        [demo8Path addLineToPoint: CGPointMake(279.61, 206.21)];
        [demo8Path closePath];
        [color2 setStroke];
        demo8Path.lineWidth = 5;
        [demo8Path stroke];
        [collectedppaths addObject:demo8Path];


        //// demo 9 Drawing
        UIBezierPath* demo9Path = [UIBezierPath bezierPath];
        [demo9Path moveToPoint: CGPointMake(280.08, 253.39)];
        [demo9Path addLineToPoint: CGPointMake(398.17, 253.39)];
        [demo9Path addLineToPoint: CGPointMake(394.9, 261.33)];
        [demo9Path addLineToPoint: CGPointMake(388.83, 266.93)];
        [demo9Path addCurveToPoint: CGPointMake(382.76, 270.67) controlPoint1: CGPointMake(388.83, 266.93) controlPoint2: CGPointMake(382.76, 270.2)];
        [demo9Path addCurveToPoint: CGPointMake(377.16, 276.74) controlPoint1: CGPointMake(382.76, 271.13) controlPoint2: CGPointMake(377.16, 276.74)];
        [demo9Path addLineToPoint: CGPointMake(374.83, 282.81)];
        [demo9Path addLineToPoint: CGPointMake(377.16, 308.5)];
        [demo9Path addLineToPoint: CGPointMake(280.08, 308.5)];
        [demo9Path addLineToPoint: CGPointMake(280.08, 253.39)];
        [demo9Path closePath];
        [color2 setStroke];
        demo9Path.lineWidth = 5;
        [demo9Path stroke];
        [collectedppaths addObject:demo9Path];


        //// demo 2 Drawing
        UIBezierPath* demo2Path = [UIBezierPath bezierPath];
        [demo2Path moveToPoint: CGPointMake(86.84, 215.55)];
        [demo2Path addLineToPoint: CGPointMake(183.93, 215.55)];
        [demo2Path addLineToPoint: CGPointMake(183.93, 238.91)];
        [demo2Path addLineToPoint: CGPointMake(177.86, 240.78)];
        [demo2Path addLineToPoint: CGPointMake(169.46, 250.12)];
        [demo2Path addLineToPoint: CGPointMake(155.46, 259.46)];
        [demo2Path addLineToPoint: CGPointMake(138.19, 266)];
        [demo2Path addLineToPoint: CGPointMake(122.78, 260.39)];
        [demo2Path addLineToPoint: CGPointMake(102.71, 256.19)];
        [demo2Path addLineToPoint: CGPointMake(86.84, 254.79)];
        [demo2Path addLineToPoint: CGPointMake(86.84, 215.55)];
        [demo2Path closePath];
        [color2 setStroke];
        demo2Path.lineWidth = 5;
        [demo2Path stroke];
        [collectedppaths addObject:demo2Path];
    }

}

Answer 1

您正在硬编码您的观点。当然，它会在同一个地方和同样的大小上绘制。

相反，将您的点定义为整个视图的比例，并根据传递给 [=11] 的 rect 计算准确的 x 和 y 值=].

现在您所要做的就是将您的视图叠加到正确的位置和大小，绘图应该会自动缩放。您甚至可以让用户缩放并且该区域应该正确地重绘自己。

drawrect 以适合 uiview 无论大小

drawrect to fit uiview no matter the size

autolayout

scale

drawrect

contentmode