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masonry 布局的那些骚操作

admin 11月 14, 2020 0

常用的用法就不再多说

[view mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.equalTo(@100);
        make.left.equalTo(@50);
        make.right.equalTo(@(-50));
        make.height.mas_equalTo(50);
    }];

##Masonry的c骚操作

Masonry的库里有一个NSArray的Category，用法有点骚；当有多个view的时候，你可以将多个view放在Array中，用Array去约束，当然这种相当于批量操作。
更骚的是，当一行显示10个等分label的时候，for循环创建布局,然后计算？NO

NSMutableArray <UIButton *> *buttons = [NSMutableArray new];
NSArray <NSString *> *titles = @[@"站内信",@"公告",@"消息"];
for (int i = 0; i < titles.count; i ++) {
    UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
    button.tag = i+1000;
    [buttons addObject:button];
    [self addSubview:button];
    [[UIButton appearance] setExclusiveTouch:YES];
    [button addTarget:self action:@selector(buttonClick:) forControlEvents:UIControlEventTouchDown];
    [button mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.bottom.equalTo(self);
        }];
    }
[buttons mas_distributeViewsAlongAxis:MASAxisTypeHorizontal withFixedSpacing:0 leadSpacing:0 tailSpacing:0];

- (void)mas_distributeViewsAlongAxis:(MASAxisType)axisType withFixedSpacing:(CGFloat)fixedSpacing leadSpacing:(CGFloat)leadSpacing tailSpacing:(CGFloat)tailSpacing;

- (void)mas_distributeViewsAlongAxis:(MASAxisType)axisType withFixedItemLength:(CGFloat)fixedItemLength leadSpacing:(CGFloat)leadSpacing tailSpacing:(CGFloat)tailSpacing

这两个方法的不同就在于第二个参数，第一个是“两个控件间隔”第二个是控件的宽或者高。