ios - 边框文本域

Question

我想创建圆角文本字段的边框点线。我成功地创建了一个文本字段的边框，但我有一些边框文本字段的圆角问题。我需要带虚线的圆角文本字段。这是我的代码。

firstName.layer.borderColor =[UIColor clearColor].CGColor;

border = [CAShapeLayer layer];
border.strokeColor = [UIColor blueColor].CGColor;
border.fillColor = nil;
border.lineDashPattern = @[@4, @2];
border.path = [UIBezierPath bezierPathWithRect:firstName.bounds].CGPath;
border.frame = firstName.bounds;

[firstName.layer addSublayer:border];

Answer 1

以下是去除 UITextField 的 gray color 边框的解决方案。

问题

解决方案

为此，您需要使用以下一行代码 只需更改边框样式

_firstName.borderStyle = UITextBorderStyleNone;

CAShapeLayer *border = [CAShapeLayer layer];
border.strokeColor = [UIColor gray].CGColor;
border.fillColor = nil;
border.lineDashPattern = @[@4, @2];
border.path = [UIBezierPath bezierPathWithRect:_firstName.bounds].CGPath;
border.frame = _firstName.bounds;

[_firstName.layer addSublayer:border];

_firstName.borderStyle = UITextBorderStyleNone;

更新

对于圆角使用以下函数。

- (void)drawDashedBorderAroundView:(UIView *)v
{
    //border definitions
    CGFloat cornerRadius = 10;
    CGFloat borderWidth = 2;
    NSInteger dashPattern1 = 8;
    NSInteger dashPattern2 = 8;
    UIColor *lineColor = [UIColor orangeColor];

    //drawing
    CGRect frame = v.bounds;

    CAShapeLayer *_shapeLayer = [CAShapeLayer layer];

    //creating a path
    CGMutablePathRef path = CGPathCreateMutable();

    //drawing a border around a view
    CGPathMoveToPoint(path, NULL, 0, frame.size.height - cornerRadius);
    CGPathAddLineToPoint(path, NULL, 0, cornerRadius);
    CGPathAddArc(path, NULL, cornerRadius, cornerRadius, cornerRadius, M_PI, -M_PI_2, NO);
    CGPathAddLineToPoint(path, NULL, frame.size.width - cornerRadius, 0);
    CGPathAddArc(path, NULL, frame.size.width - cornerRadius, cornerRadius, cornerRadius, -M_PI_2, 0, NO);
    CGPathAddLineToPoint(path, NULL, frame.size.width, frame.size.height - cornerRadius);
    CGPathAddArc(path, NULL, frame.size.width - cornerRadius, frame.size.height - cornerRadius, cornerRadius, 0, M_PI_2, NO);
    CGPathAddLineToPoint(path, NULL, cornerRadius, frame.size.height);
    CGPathAddArc(path, NULL, cornerRadius, frame.size.height - cornerRadius, cornerRadius, M_PI_2, M_PI, NO);

    //path is set as the _shapeLayer object's path
    _shapeLayer.path = path;
    CGPathRelease(path);

    _shapeLayer.backgroundColor = [[UIColor clearColor] CGColor];
    _shapeLayer.frame = frame;
    _shapeLayer.masksToBounds = NO;
    [_shapeLayer setValue:[NSNumber numberWithBool:NO] forKey:@"isCircle"];
    _shapeLayer.fillColor = [[UIColor clearColor] CGColor];
    _shapeLayer.strokeColor = [lineColor CGColor];
    _shapeLayer.lineWidth = borderWidth;
    _shapeLayer.lineDashPattern = [NSArray arrayWithObjects:[NSNumber numberWithInt:dashPattern1], [NSNumber numberWithInt:dashPattern2], nil];
    _shapeLayer.lineCap = kCALineCapRound;

    //_shapeLayer is added as a sublayer of the view, the border is visible
    [v.layer addSublayer:_shapeLayer];
    v.layer.cornerRadius = cornerRadius;
}

使用下面的代码调用这个函数。

_firstName.borderStyle = UITextBorderStyleNone;
[self drawDashedBorderAroundView:_firstName];

希望这对您有帮助。