UIButton设置圆角和边框

1.0 button 设置圆角和边框   

    UIButton*button = [[UIButtonalloc]init];

    [button.titleLabel setFont:[UIFont systemFontOfSize:14]];
    [button setTitleColor:RGBACOLOR(4.0, 172.0, 247.0, 1) forState:UIControlStateNormal];
    button.layer.cornerRadius = 2.5;
    button.layer.masksToBounds = YES;
    CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
    CGColorRef colorref = CGColorCreate(colorSpace,(CGFloat[]){ 4.0/255.0, 172.0/255.0, 247.0/255.0, 1 });
    CGColorSpaceRelease(colorSpace);
    [button.layer setBorderColor:colorref];//边框颜色
    [button.layer setBorderWidth:0.5];//边框宽度

    CGColorRelease(colorref);

2.0 button 设置文字模式

     button.titleLabel.lineBreakMode = NSLineBreakByTruncatingTail; //点点点显示在最后

     button.titleLabel.lineBreakMode = 0;      // button中titleLabel文字自动换行