iOS masonry使用

Masonry给我们的属性

@property (nonatomic, strong, readonly) MASConstraint *left;         //左侧

@property (nonatomic, strong, readonly) MASConstraint *top;        //上侧

@property (nonatomic, strong, readonly) MASConstraint *right;      //右侧

@property (nonatomic, strong, readonly) MASConstraint *bottom;   //下侧

@property (nonatomic, strong, readonly) MASConstraint *leading;   //首部

@property (nonatomic, strong, readonly) MASConstraint *trailing;   //尾部

@property (nonatomic, strong, readonly) MASConstraint *width;     //宽

@property (nonatomic, strong, readonly) MASConstraint *height;    //高

@property (nonatomic, strong, readonly) MASConstraint *centerX;  //横向居中

@property (nonatomic, strong, readonly) MASConstraint *centerY;  //纵向居中

@property (nonatomic, strong, readonly) MASConstraint *baseline; //文本基线

Masonry给我们提供了3个方法

//新增约束

- (NSArray *)mas_makeConstraints:(void(^)(MASConstraintMaker *make))block;

//更新约束

- (NSArray *)mas_updateConstraints:(void(^)(MASConstraintMaker *make))block;

//清楚之前的所有约束,只会保留最新的约束

- (NSArray *)mas_remakeConstraints:(void(^)(MASConstraintMaker *make))block;