图片切圆，label文字底部添一条线，自定义view的透明度渐变效果

图片切圆，label文字底部加一条线，自定义view的透明度渐变效果

1.图片头像切成圆【不是半径的话 不是正圆】

    self.imgvHead.clipsToBounds = YES;

    self.imgvHead.layer.cornerRadius = self.imgvHead.bounds.size.height/2;

    self.imgvHead.layer.borderWidth = 0.5f;

    self.imgvHead.layer.borderColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.3].CGColor;

2.UILabel底部显示一条线

    NSMutableAttributedString *str = [[NSMutableAttributedString alloc] initWithString:self.lblCheckDetail.text];

    NSRange strRange = {0,[str length]};

    [str addAttribute:NSUnderlineStyleAttributeName value:[NSNumber numberWithInteger:NSUnderlineStyleSingle] range:strRange];

    [self.lblCheckDetail setAttributedText:str];

3.自定义一个透明度渐变的效果

    UIColor *colorOne = [UIColor colorWithRed:(33/255.0)  green:(33/255.0)  blue:(33/255.0)  alpha:0.0];

    UIColor *colorTwo = [UIColor colorWithRed:(33/255.0)  green:(33/255.0)  blue:(33/255.0)  alpha:1.0];

    NSArray *colors = [NSArray arrayWithObjects:(id)colorOne.CGColor, colorTwo.CGColor,  nil];

    NSNumber *stopOne = [NSNumber numberWithFloat:0.0];

    NSNumber *stopTwo = [NSNumber numberWithFloat:1.0];

    NSArray *locations = [NSArray arrayWithObjects:stopOne, stopTwo,  nil];

    CAGradientLayer *headerLayer = [CAGradientLayer layer];

    headerLayer.colors = colors;

    headerLayer.locations = locations;

    CGFloat width = self.viewGradualAlpha.bounds.size.width + SCREEN_WIDTH - self.cellimgvTop.bounds.size.width;

    CGFloat height= self.viewGradualAlpha.bounds.size.height;

    headerLayer.frame = CGRectMake(0, 0, width, height);

    [self.viewGradualAlpha.layer insertSublayer:headerLayer atIndex:0];