UITextView / UITextField的虚线/虚线边框

I want to set a Dotted / Dashed border for my UITextField and UITextView.

我想为UITextField和UITextView设置一个点/虚线的边界。

How can I do that? I know that, I can set border with this line of code:

我怎么做呢?我知道，我可以用这行代码设置边框:

[self.textFieldCardTitle.layer setBorderWidth:1.0];
[self.textFieldCardTitle.layer setBorderColor:[[UIColor whiteColor] CGColor]];  

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Notice: I already have the idea to add a UIImageView behind the UITextView and set there an image with dashed border. But I don't want to solve it that way.

注意:我已经有了在UITextView后面添加UIImageView并设置一个带虚线边框的图像的想法。但我不想用这种方法求解。

3 个解决方案

#1

You could try, for example, next approach:

你可以尝试下一个方法:

1) Create image that will represent your border (for example: one dot and space)

1)创建表示边框的图像(例如:一个点和一个空格)

2) Add image to project.

2)将图像添加到项目中。

3) Set border (as in code in your question) and set color with pattern:

3)设置边框(如您问题中的代码)，用图案设置颜色:

[self.textFieldCardTitle.layer setBorderWidth:6.0];
[self.textFieldCardTitle.layer setBorderColor:[[UIColor colorWithPatternImage:[UIImage imageNamed:@"dashed_white.png"]] CGColor]];

As border is drawn along 4 sides (left, right, bottom, top) you should use square image: for example, pixel in middle is black and pixels around it are transparent. So copies of that image will be placed around the view.

当边框沿着4条边(左、右、下、上)绘制时，您应该使用方形图像:例如，中间的像素是黑色的，周围的像素是透明的。所以图像的拷贝会被放置在视图的周围。

#2

Just use following code for Dotted / Dashed Border around UIView or UITextField or any other view:-

只需使用以下代码为点/虚线边界围绕UIView或UITextField或任何其他视图:-

CAShapeLayer * _border = [CAShapeLayer layer];
_border.strokeColor = [UIColor redColor].CGColor;
_border.fillColor = nil;
_border.lineDashPattern = @[@4, @2];
[YOURVIEW.layer addSublayer:_border];

//for a square effect
_border.path = [UIBezierPath bezierPathWithRect:YOURVIEW.bounds].CGPath;
//for a rounded effect
//_border.path = [UIBezierPath bezierPathWithRoundedRect:YOURVIEW.bounds cornerRadius:txtUserName.frame.size.height / 2].CGPath;

_border.frame = YOURVIEW.bounds;

For more details, Refer this Answer.

有关更多细节，请参考以下答案。

Hope, this is what you're looking for. Any concern get back to me. :)

希望，这就是你要找的。任何关心的事都可以告诉我。:)

#3

Here's what I did with Swift:

以下是我对斯威夫特做的:

self.textFieldCardTitle.layer.borderWidth = 3
self.textFieldCardTitle.layer.borderColor = (UIColor(patternImage: UIImage(named: "dot")!)).CGColor

Free bonus, I attached the pics below. Unless * changes its background, you probably won't see them as they are white squares on a white background, so you'll find the urls below as well.

免费的奖金，我附上下面的图片。除非*改变它的背景，否则你可能不会看到它们，因为它们是白色背景上的白色方块，所以你也会找到下面的url。

• http://i.stack.imgur.com/X7PfM.png -> rename it to dot.png
• http://i.stack.imgur.com/X7PfM.png ->重命名为dot.png
• http://i.stack.imgur.com/IemhF.png -> rename it to [e-mail]
• http://i.stack.imgur.com/IemhF.png ->重命名为[e-mail]
• http://i.stack.imgur.com/CSjZT.png -> rename it to [e-mail]
• http://i.stack.imgur.com/CSjZT.png ->将其重命名为[e-mail]。