#import "ViewController.h"

@interface ViewController ()

@property (strong, nonatomic) IBOutlet UIButton *btnSave;

@property (strong, nonatomic) IBOutlet UIView *yellowView;

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    //获取button的图层

    CALayer *layer = self.btnSave.layer;

    //设置button图层的边框可见(只有masks遮住bounds，这样bounds才可见，否则都是透明的)

    layer.masksToBounds = YES;

    //设置button图层的边框颜色

    layer.borderColor = [UIColor redColor].CGColor;

    //设置button图层的边框宽度

    layer.borderWidth = ;

    //设置button图层的角度半径

    layer.cornerRadius = 10.0;

    self.yellowView.layer.masksToBounds = YES;

    self.yellowView.layer.borderColor = [UIColor blueColor].CGColor;

}