我正在尝试在UIView中绘制一个字符串。
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
let anotheR: anotherView = anotherView(frame: view.bounds)
view.backgroundColor = UIColor.yellow
view.addSubview(anotheR)
anotheR.backgroundColor = UIColor.lightGray
anotheR.draw(CGRect(x: 100, y: 300, width: 50, height: 10))
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
class anotherView: UIView {
override func draw(_ rect: CGRect) {
let suprect = rect
var string = "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s." as NSString
string.draw(in: rect, withAttributes: [NSForegroundColorAttributeName: UIColor.red, NSFontAttributeName: UIFont.systemFont(ofSize: 24)])
}
}
所以有一个视图,我覆盖UIViews函数draw(在:)中在视图中写一个字符串。所以它写了一个字符串,但没有指定矩形(CGRect(x:100,y:300,width:50,height:10))。它只是在CGrect(x:0,y:0,width:frame.width,height:frame.height)中绘制它。因此它在运行时自行更改rect。
这是: 1)程序开始调用 anotheR.draw(CGRect(x:100,y:300,width:50,height:10))方法。
2)CGRect以某种方式更改为CGRect(x:0,y:0,width:frame.width,height:frame.height) 也许有人知道什么事发生?它暴露了我写的所有代码。谢谢!
答案 0 :(得分:1)
SK_khan的解决方案是正确的。如果您希望将 anotherView 与绑定控制器视图绑定相同,则可以选择在此方法中设置 CGRect 硬值。
string.draw(in: CGRect(x: 100, y: 300, width: 50, height: 10), withAttributes: [NSAttributedStringKey.foregroundColor: UIColor.red, NSAttributedStringKey.font: UIFont.systemFont(ofSize: 24)])
答案 1 :(得分:0)
实际上drawRect捕获视图的框架并根据它的尺寸绘制,你不应该明确地调用它,你只需要指定这一行
let anotheR: anotherView = anotherView(frame: view.bounds)
或将其更改为
let anotheR: anotherView = anotherView(frame:CGRect(x: 100, y: 300, width: 50, height: 10))
同时给它一个合适的宽度和高度50,10分别不足以显示这么长的文字