iOS开发技巧 - 使UILabel中的文字吸顶（顶部对齐）

参考文章地址：https://blog.csdn.net/u013316626/article/details/71059601

目的是让label的字体贴上面。

    self.textLabel.frame = CGRectMake(BGAdaptedWidth(19),  CGRectGetMaxY(self.titleLabel.frame) + BGAdaptedHeight(32), BGAdaptedWidth(302), BGAdaptedWidth(270));

    self.textLabel.text= BGLocaltring(@"31313151313131313213131一大段落文字");

    self.textLabel.numberOfLines = 0;

    [self.textLabel sizeToFit];

    self.textLabel.mj_w = BGAdaptedWidth(302);

    [self.textLabel sp_setLineSpace: BGAdaptedHeight(11)];//设置行间距

设置button的两个圆角

    UIBezierPath * path = [UIBezierPath bezierPathWithRoundedRect:self.agreeButton.bounds byRoundingCorners:UIRectCornerBottomLeft|UIRectCornerBottomRight cornerRadii:CGSizeMake(BGAdaptedWidth(10), BGAdaptedWidth(10))];

    CAShapeLayer * layer = [[CAShapeLayer alloc] init];

    layer.frame=self.agreeButton.bounds;

    layer.path= path.CGPath;

    self.agreeButton.layer.mask= layer;