iOS-TextView、UIButton加边框，加下划线-优快云博客

本文介绍如何使用iOS原生代码自定义UI元素的样式，包括TextView的边框、圆角及按钮的各种属性设置，并展示了如何为按钮添加点击事件响应。

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textview对象.layer.borderColor = UIColor.grayColor.CGColor;

textview对象.layer.borderWidth = 5; //必须设置宽度，否则加不上

textview对象.layer.cornerRadius = 4;//圆角弧度

UIButton *signBtn = [UIButton buttonWithType:UIButtonTypeCustom];
signBtn.frame = CGRectMake(0, 0, 80, 40);
[signBtn.layer setMasksToBounds:YES];
[signBtn.layer setCornerRadius:10.0]; //设置矩形四个圆角半径
[signBtn.layer setBorderWidth:1.0]; //边框宽度
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();

CGColorRef colorref = CGColorCreate(colorSpace,(CGFloat[]){ 1, 0, 0, 1 });

[signBtn.layer setBorderColor:colorref];//边框颜色

[signBtn setTitle:@"还原" forState:UIControlStateNormal];//button title

[signBtn setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];//title color

[signBtn addTarget:self action:@selector(buttonDonwRecover:) forControlEvents:UIControlEventTouchUpInside];//button 点击回调方法

signBtn.backgroundColor = [UIColor whiteColor];

- (void)buttonDonwRecover:(id)sender

{

UIButton *btn = (UIButton *)sender;

}

//加下划线

NSMutableAttributedString *str = [[NSMutableAttributedString alloc] initWithString:self.resgiterButton.titleLabel.text];