Masonry使用方法

Masonry基本参数

// mas_equalTo 会对参数进行包

//    equalTo  不会对参数进行包装

//    mas_equalTo可以使用

若想使equalTo和 equalTo有等同的效果，可以导入这两个宏

//加上这个宏，mas_equalto，equalto相同

#define MAS_SHORTHAND

//该宏会自动包装

#define MAS_SHORTHAND_GLOBALS

更新约束
//这个方法只会添加新的约束

[blueView mas_makeConstraints:^(MASConstraintMaker *make) {

}];

//这个将会将以前的约束删掉，添加新的

[blueView mas_remakeConstraints:^(MASConstraintMaker *make) {

}];

//这个方法将会覆盖以前的某些特定的约束

[blueView mas_updateConstraints:^(MASConstraintMaker *make) {

}];

做出这样的效果图可以使用这些方法进行实现，相同的效果不同表现形式。可以有很多表现形式，只列出以下几种。

// ################ Method1############################

[blueView mas_makeConstraints:^(MASConstraintMaker *make) {

    make.width.equalTo(@100);

    make.height.equalTo(@100);

    make.right.equalTo(self.view.mas_right).offset(-20);

    make.bottom .equalTo(self.view.mas_bottom).offset(-20);

}];

//  ################ Method2############################

[blueView mas_makeConstraints:^(MASConstraintMaker *make) {

    make.width.mas_equalTo(100);  // mas_equalTo 自动包装

    make.height.mas_equalTo(100);

    make.right.equalTo(self.view).offset(-20);

    make.bottom .equalTo(self.view).offset(-20);

}];

//  ################ Method3############################

[blueView mas_makeConstraints:^(MASConstraintMaker *make) {

    make.width.height.mas_equalTo(100);  // mas_equalTo

    make.right.equalTo(self.view).offset(-20);

    make.bottom .equalTo(self.view).offset(-20);

}];

// ################ Method4############################

[blueView mas_makeConstraints:^(MASConstraintMaker *make) {

    make.size.mas_equalTo(CGSizeMake(100, 100));

    make.right.equalTo(self.view).offset(-20);

    make.bottom .equalTo(self.view).offset(-20);

}];

//  ################ Method5############################

[blueView mas_makeConstraints:^(MASConstraintMaker *make) {

    make.size.mas_equalTo(CGSizeMake(100, 100));

    make.right.offset(-20); //默认是父控件

    make.bottom.offset(-20);

}];

[blueView mas_makeConstraints:^(MASConstraintMaker *make) {

    make.size.mas_equalTo(self.view).multipliedBy(0.5).offset(-50);//按比例计算

    make.right.offset(-20); //默认是父控件

    make.bottom.offset(-20);

}];

//蓝色

UIView *blueView = [[UIView alloc]init];

blueView.backgroundColor = [UIColor blueColor];

[self.view addSubview:blueView];

//红色

UIView *redView = [[UIView alloc]init];

redView.backgroundColor = [UIColor redColor];

[self.view addSubview:redView];

CGFloat margin = 20;

CGFloat height = 40;

//  ################ Method1############################

[blueView mas_makeConstraints:^(MASConstraintMaker *make) {

    make.left.equalTo(self.view.left).offset(margin);

    make.right.equalTo(redView.left).offset(-margin);

    make.bottom.equalTo(self.view.bottom).offset(-margin);

    make.height.equalTo(height);

    make.width.equalTo(blueView.width);

}];

[redView mas_makeConstraints:^(MASConstraintMaker *make) {

    make.left.equalTo(blueView.right).offset(margin);

    make.right.equalTo(self.view.right).offset(-margin);

    make.bottom.equalTo(self.view.bottom).offset(-margin);

    make.height.equalTo(height);

    make.width.equalTo(blueView.width);

}];

//  ################ Method2############################

[blueView mas_makeConstraints:^(MASConstraintMaker *make) {

    make.left.equalTo(self.view.left).offset(margin);

    make.right.equalTo(redView.left).offset(-margin);

    make.bottom.equalTo(self.view.bottom).offset(-margin);

    make.height.equalTo(height);

    make.top.equalTo(redView.top);

    make.bottom.equalTo(redView.bottom);

    make.width .equalTo(redView.width);

}];

[redView mas_makeConstraints:^(MASConstraintMaker *make) {

    make.right.equalTo(self.view.right).offset(-margin);

}];

未完待续