iOS UIView 某个角设置圆角

直接上代码

UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:_statusLab.bounds byRoundingCorners:UIRectCornerTopLeft | UIRectCornerBottomLeft cornerRadii:CGSizeMake(_statusLab.height / 2, _statusLab.height / 2)];
    CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];
    maskLayer.frame = _statusLab.bounds;
    maskLayer.path = maskPath.CGPath;
    _statusLab.layer.mask = maskLayer;