UIView格式备忘

#pragma mark - life circle

- (instancetype)initWithFrame:(CGRect)frame{
    self = [super initWithFrame:frame];
    if(self){
        self.backgroundColor = [UIColor colorWithWhite:0 alpha:0.5];
        [self addSubview:self.upView];
        [self setMasonry];
    }
    return self;
}

#pragma mark - delegate

#pragma mark - event response

#pragma mark - private methods


- (void)setMasonry{

    
}

#pragma mark - getters and setters