添加一条边框

#import <QuartzCore/QuartzCore.h>

- (void)viewDidLoad {

   CALayer *TopBorder = [CALayer layer];

   TopBorder.frame = CGRectMake(0.0f, 0.0f, myview.frame.size.width, 3.0f);    TopBorder.backgroundColor = [UIColor redColor].CGColor;

   [myview.layer addSublayer:TopBorder];  

[super viewDidLoad];

}

 

    //顶部line
        CALayer *topAdnBottom = [CALayer layer];
        topAdnBottom.frame = CGRectMake(0.0f, 0.0f, SCREEN_WIDTH, 1.0f);
        topAdnBottom.backgroundColor = LINE_CORLOR.CGColor;
        [startPlayView.layer addSublayer:topAdnBottom];
        //尾部line
        CALayer *bottomBorder = [CALayer layer];
        bottomBorder.frame = CGRectMake(0.0f, startPlayView.frame.size.height - 1, SCREEN_WIDTH, 1.0f);
        bottomBorder.backgroundColor = LINE_CORLOR.CGColor;

        [startPlayView.layer addSublayer:bottomBorder];