Add sliding lines underneath the UIButton

1. Cycle through the creation of 5 buttons, then add horizontal lines to the line faces of the buttons.

2. Changes to the frame with horizontal line sliding in the Click event of the button

3. The code is as follows:

[UIView animatewithduration:.35 animations:^{

CGFloat CenterX = button.center.x;

Cgpoint point = Cgpointmake (CenterX, _SELECTEDLINE.CENTER.Y);

_selectedline.center = point;

[Button Settitlecolor:[uicolor Whitecolor] forstate:uicontrolstatenormal];

} completion:^ (BOOL finished) {

}];

Add sliding lines underneath the UIButton