masonry 基本用法

一：masonry 基本用法

    fistView=[[UIView alloc] init];
    fistView.backgroundColor=[UIColor redColor];
    [self.view addSubview:fistView];

   secondView=[[UIView alloc] init];
    secondView.backgroundColor=[UIColor blueColor];
    [self.view addSubview:secondView];

    threeView=[[UIView alloc] init];
    threeView.backgroundColor=[UIColor yellowColor];
    [self.view addSubview:threeView];

    bottomView=[[UIView alloc] init];
    bottomView.backgroundColor=[UIColor grayColor];
    [self.view addSubview:bottomView];

基本约束布局代码

#pragma mark -第一种布局方法

-(void)left_top_size_marign{

    CGFloat padding =;
    CGFloat width=(self.view.bounds.size.width-*padding)/;

    [fistView mas_makeConstraints:^(MASConstraintMaker *make) {

        make.left.mas_equalTo(padding);
        make.top.mas_equalTo(padding);
        make.size.mas_equalTo(CGSizeMake(width, ));

    }];

    [threeView mas_makeConstraints:^(MASConstraintMaker *make) {

        make.left.mas_equalTo(padding*+width);
        make.top.mas_equalTo(padding);
        make.size.mas_equalTo(CGSizeMake(width, ));

    }];

    [threeView mas_makeConstraints:^(MASConstraintMaker *make) {

        make.left.mas_equalTo(padding*+width*);
        make.top.mas_equalTo(padding);
        make.size.mas_equalTo(CGSizeMake(width, ));

    }];

}

二：masonry 相对于子View布局

CGFloat padding =;
    CGFloat width=(self.view.bounds.size.width-*padding)/;

    [fistView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.mas_equalTo(padding);
        make.top.mas_equalTo(padding);
        make.size.mas_equalTo(CGSizeMake(width, ));
    }];

    [secondView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.mas_equalTo(fistView.mas_right).offset(padding);
        make.size.top.mas_equalTo(fistView);

    }];

    [threeView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.mas_equalTo(secondView.mas_right).offset(padding);
        make.size.top.mas_equalTo(secondView);

    }];

三：masonry内边距布局

//内边距
    [paddingView mas_makeConstraints:^(MASConstraintMaker *make) {

        make.edges.equalTo(fistView).insets(UIEdgeInsetsMake(, , , ));

    }];

四：UILable 多行布局

 lb=[[UILabel alloc] init];
    lb.text=@"ication:didReceiveRemoteNotification:fetchCompletionHandler:], but you still need to add remote-notification to the list of your supported";
    [self.view addSubview:lb];

---------

//label多行
    lb.preferredMaxLayoutWidth=self.view.width-;

    lb.numberOfLines=;
    [lb mas_makeConstraints:^(MASConstraintMaker *make) {

        make.top.mas_equalTo(bottomView.mas_bottom).offset();
        make.left.mas_equalTo();
        make.right.mas_equalTo(-);

    }];

五：masonry动画更新

-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{

    if(flag){

        CGFloat padding =;
        CGFloat width=(self.view.bounds.size.width-*padding)/;

        [fistView mas_updateConstraints:^(MASConstraintMaker *make) {
            make.left.mas_equalTo(padding);
            make.top.mas_equalTo(padding);
            make.size.mas_equalTo(CGSizeMake(width, ));
        }];

    }
    else{

        [fistView mas_updateConstraints:^(MASConstraintMaker *make) {
            make.left.mas_equalTo();
            make.top.mas_equalTo();
            make.size.mas_equalTo(CGSizeMake(, ));
        }];
    }

    flag=!flag;

    [UIView animateWithDuration:0.25 animations:^{

//        [self.view layoutIfNeeded];

    } completion:^(BOOL finished) {

    }];

}