设置圆角按钮 iOS开发

NSArray *btnNameArray = [NSArray arrayWithObjects:@"登录",@"找回密码",@"注册", nil];
for (int i = 0; i < 3 ; i++) {
UIButton *myBtn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[myBtn setFrame:CGRectMake(50+i*(70+40), 320, 70, 30)];
//设置标题
[myBtn setTitle:btnNameArray[i] forState:UIControlStateNormal];
//设置tag值
[myBtn setTag:1000+i];
//设置字体颜色
[myBtn setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
//设置背景颜色
[myBtn setBackgroundColor:[UIColor colorWithRed:0.0 green:128/255.0 blue:255.0 alpha:1]];
//圆角按钮
[myBtn.layer setMasksToBounds:YES];
[myBtn.layer setCornerRadius:5.0];
[loginView addSubview:myBtn];
}
[self.window addSubview:loginView];