swift 区块链技术 确认助记词

主要涉及到助记词的排序自适应

这里把主要代码贴出来

// MARK: - 多个不同宽度button自动换行

func createViewWithTitleArr(_ titleAry: Array<Any>?) {

while (mBgView.subviews.count > 0) {

let child = mBgView.subviews.last

child?.removeFromSuperview()

}

var pointX: CGFloat = 10.0 //button X坐标

var pointY: CGFloat = 10.0 //button Y坐标

let padding: CGFloat = 12.0 //button 间距

let btnHeight: CGFloat = 27.0 //button 高度

let allWidth = mBgView.frame.size.width

let mCount: Int = (titleAry?.count)!

for i in 0..<mCount {

let mTitle: String = titleAry![i] as! String

let constraint = CGSize(width: CGFloat(MAXFLOAT), height: 30)

let rect = mTitle.boundingRect(with: constraint, options:[.usesFontLeading, .usesLineFragmentOrigin], attributes: [NSAttributedString.Key.font : UIFont.systemFont(ofSize: 14)], context: nil)

let btnWidth = rect.width + 20

if pointX + btnWidth > allWidth {

pointX = 10.0//X重新开始

pointY += (btnHeight + padding)//换行后Y+

}

let but = UIButton(type: UIButton.ButtonType.custom)

but.frame = CGRect.init(x: pointX, y: pointY, width: btnWidth, height: btnHeight)

but.tag = i + 1000;

but.addTarget(self, action: #selector(clickButtonAction(sender:)), for: .touchUpInside)

but.layer.masksToBounds = true

but.layer.cornerRadius = 1

but.backgroundColor = RGB(250, 234, 222)

but.setTitle(mTitle, for: .normal)

but.setTitleColor(RGB(51, 51, 51), for: .normal)

but.titleLabel?.font = UIFont.systemFont(ofSize: 14)

pointX += (btnWidth + padding);//每次X都加上button宽和间距12

mBgView.addSubview(but)

}

if pointY + btnHeight + 10 < 135 {

mBgViewHeight.constant = 135

}else {

mBgViewHeight.constant = pointY + btnHeight + 10

}

}