draw only top, right, and bottom border around a uilabel
ios, uilabel
Solution
You can use a mask. This is the code I used to test the theory, and it works well:
// Define the border width in a variable, we'll be using it elsewhere
CGFloat borderWidth = 1.0;
// This creates a testing view to test the theory, in your case this will be your UILabel
UIView* view = [[UIView alloc] initWithFrame:CGRectMake(20, 60, 250, 100)];
view.layer.borderColor = [UIColor blackColor].CGColor;
view.layer.borderWidth = borderWidth;
[self.view addSubview:view];
// Create the mask to cover the area of the view you want to **show**
// Here, we create a mask that covers most of the view, except the left edge
// The mask needs to be coloured in black, as black acts as transparent, whereas white is opaque in mask parlance
UIView* mask = [[UIView alloc] initWithFrame:CGRectMake(borderWidth, 0, view.frame.size.width - borderWidth, view.frame.size.height)];
mask.backgroundColor = [UIColor blackColor];
view.layer.mask = mask.layer;
You can adjust the size and position of the mask (given the borderWidth) to show/hide the border edges you're interested in. The example above hides the left edge.
Problem
i try to add border for a uilabel, but i only want to have `top, right, and bottom` border. like this ``` ---------------- | I am a label | | ---------------- ``` I try to use these codes, but it adds all 4 sides by default ``` myLabel.layer.borderWidth = 1; myLabel.layer.borderColor = [UIColor blackColor]; ``` Is that anyway i can only add 3 sides, or even 1 or 2 sides? Thanks!