iPhone開發筆記 (7) 用Layer製作圓角button

    製作圓角button的方法很多這裡只介紹採用Layer的方法，隨讓layer效率上實在是不盡如人意，但是效果上絕對沒話說。

    下面的代碼我是採用imageView加上透明button做的效果。直接修改button的layer我沒弄過，不過原理應該差不多。

    先看看

    

UIImageView *imageView1 = [[UIImageView alloc] init];    imageView1.frame = CGRectMake(23.75, 16.6, 75, 75);    imageView1.image = [UIImage imageNamed:@"menu1.png"];    imageView1.layer.MasksToBounds = YES;      imageView1.layer.cornerRadius = 10.0;     imageView1.layer.borderWidth = 2;      imageView1.layer.borderColor = [[UIColor colorWithRed:161/255.0 green:47/255.0 blue:47/255.0 alpha:1] CGColor];     imageView1.backgroundColor = [UIColor colorWithRed:161/255.0 green:47/255.0 blue:47/255.0 alpha:1];            UIImageView *imageView2 = [[UIImageView alloc] init];    imageView2.frame = CGRectMake(122.5, 16.6, 75, 75);    imageView2.image = [UIImage imageNamed:@"menu2.png"];    imageView2.layer.MasksToBounds = YES;      imageView2.layer.cornerRadius = 10.0;      imageView2.layer.borderWidth = 2;      imageView2.layer.borderColor = [[UIColor colorWithRed:161/255.0 green:47/255.0 blue:47/255.0 alpha:1] CGColor];      imageView2.backgroundColor = [UIColor colorWithRed:161/255.0 green:47/255.0 blue:47/255.0 alpha:1];        UIImageView *imageView3 = [[UIImageView alloc] init];    imageView3.frame = CGRectMake(221.25, 16.6, 75, 75);    imageView3.image = [UIImage imageNamed:@"menu3.png"];    imageView3.layer.MasksToBounds = YES;      imageView3.layer.cornerRadius = 10.0;      imageView3.layer.borderWidth = 2;      imageView3.layer.borderColor = [[UIColor colorWithRed:161/255.0 green:47/255.0 blue:47/255.0 alpha:1] CGColor];      imageView3.backgroundColor = [UIColor colorWithRed:161/255.0 green:47/255.0 blue:47/255.0 alpha:1];        UIImageView *imageView4 = [[UIImageView alloc] init];    imageView4.frame = CGRectMake(23.75, 118.2, 75, 75);    imageView4.image = [UIImage imageNamed:@"menu4.png"];    imageView4.layer.MasksToBounds = YES;      imageView4.layer.cornerRadius = 10.0;      imageView4.layer.borderWidth = 2;     imageView4.layer.borderColor = [[UIColor colorWithRed:161/255.0 green:47/255.0 blue:47/255.0 alpha:1] CGColor];      imageView4.backgroundColor = [UIColor colorWithRed:161/255.0 green:47/255.0 blue:47/255.0 alpha:1];        UIImageView *imageView5 = [[UIImageView alloc] init];    imageView5.frame = CGRectMake(122.5, 118.2, 75, 75);    imageView5.image = [UIImage imageNamed:@"menu5.png"];    imageView5.layer.MasksToBounds = YES;      imageView5.layer.cornerRadius = 10.0;      imageView5.layer.borderWidth = 2;     imageView5.layer.borderColor = [[UIColor colorWithRed:161/255.0 green:47/255.0 blue:47/255.0 alpha:1] CGColor];      imageView5.backgroundColor = [UIColor colorWithRed:161/255.0 green:47/255.0 blue:47/255.0 alpha:1];        UIImageView *imageView6 = [[UIImageView alloc] init];    imageView6.frame = CGRectMake(221.25, 118.2, 75, 75);    imageView6.image = [UIImage imageNamed:@"menu6.png"];    imageView6.layer.MasksToBounds = YES;      imageView6.layer.cornerRadius = 10.0;      imageView6.layer.borderWidth = 2;      imageView6.layer.borderColor = [[UIColor colorWithRed:161/255.0 green:47/255.0 blue:47/255.0 alpha:1] CGColor];      imageView6.backgroundColor = [UIColor colorWithRed:161/255.0 green:47/255.0 blue:47/255.0 alpha:1];