iOS-Masonry用法

 __weak typeof(self) weakSelf = self;
    
    UIView * tempView = [[UIView alloc]init];
    NSInteger count = 10;//设置一排view的个数
    NSInteger margin = 10;//设置相隔距离
    NSInteger height = 50;//设置view的高度
    for (int i = 0; i < count; i ++) {
        UIView * view = [[UIView alloc]init];
        view.backgroundColor = [UIColor brownColor];
        [self.view addSubview:view];
        if (i == 0) {
            [view mas_makeConstraints:^(MASConstraintMaker *make) {
                make.left.equalTo(weakSelf.view).offset(margin);
                make.centerY.equalTo(weakSelf.view);
                make.height.mas_equalTo(height);
            }];
        }
        else if (i == count - 1){
            [view mas_makeConstraints:^(MASConstraintMaker *make) {
                make.right.equalTo(weakSelf.view).offset(-margin);
                make.left.equalTo(tempView.mas_right).offset(margin);
                make.centerY.equalTo(tempView);
                make.height.equalTo(tempView);
                make.width.equalTo(tempView);
            }];
        }
        else{
            [view mas_makeConstraints:^(MASConstraintMaker *make) {
                make.left.equalTo(tempView.mas_right).offset(margin);
                make.centerY.equalTo(tempView);
                make.height.equalTo(tempView);
                make.width.equalTo(tempView);
            }];
        }
        tempView = view;
        [view layoutIfNeeded];
    }