Masonary循环自动添加

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ViewController.m

#import "ViewController.h"
#define MAS_SHORTHAND_GLOBALS
#import "Masonry.h"
@interface ViewController ()
@end
@implementation ViewController
-(UIColor*)randomColor{
    CGFloat red = rand() % 256 / 255.0;
    CGFloat green = rand() % 256 / 255.0;
    CGFloat blue= rand() % 256 / 255.0;
    return [UIColor colorWithRed:red green:green blue:blue alpha:1];
}
- (void)viewDidLoad {
    [super viewDidLoad];
     //Do any additional setup after loading the view, typically from a nib.
    UIView *lastView = nil;
    for (NSInteger i = 0; i< 10; i++) {
        UIView *view = [UIView new];
        view.backgroundColor = [self randomColor];
        [self.view addSubview:view];
        [view mas_makeConstraints:^(MASConstraintMaker *make) {
            //垂直方向居中
            make.centerY.equalTo(0);
            //高度等于宽度
            make.height.equalTo(view.mas_width);
            if(i == 0){
                make.left.equalTo(0);
            }
            if(i == 9){
                make.right.equalTo(0);
            }
            if(i != 0){
             make.left.equalTo(lastView.mas_right);
                make.width.equalTo(lastView);
            }
        }];
        lastView = view;
    }
}

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  image.png

image.png

ViewController.m

#import "ViewController.h"
#define MAS_SHORTHAND_GLOBALS
#import "Masonry.h"
@interface ViewController ()
@end

@implementation ViewController
-(UIColor*)randomColor{
    CGFloat red = arc4random() % 256 / 255.0;
    CGFloat green = arc4random() % 256 / 255.0;
    CGFloat blue = arc4random() % 256 / 255.0;
    return [UIColor colorWithRed:red green:green blue:blue alpha:1];
}
-(void)createView:(NSInteger)count{
    //断言 如果第一个参数的条件 满足，程序继续向下执行。如果不满足，则程序崩掉，并提示后面的错误信息
    NSAssert(count <= 2000,@"无法对2000以上进行操作");
    UIView *lastView = nil;
    for(NSInteger i = 0; i< count; i++){
        UIView* view = [[UIView alloc]init];
        view.backgroundColor = [self randomColor];
        [self.view addSubview:view];
        [view mas_makeConstraints:^(MASConstraintMaker *make) {
            make.width.equalTo(self.view);
            if(i==0){
                make.top.equalTo(0);
            }else{
                make.height.equalTo(lastView);
                make.top.equalTo(lastView.mas_bottom);
                if(i==count-1){
                    make.bottom.equalTo(0);
                }
            }
        }];
        lastView = view;
    }
}
- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    [self createView:300];
}

滚动视图加约束Masonary
ViewController.m

#import "ViewController.h"
#define MAS_SHORTHAND_GLOBALS
#import "Masonry.h"
@interface ViewController ()

@end

@implementation ViewController
-(UIColor*)randomColor{
    CGFloat red = arc4random() % 256 / 255.0;
    CGFloat green = arc4random() % 256 / 255.0;
    CGFloat blue = arc4random() % 256 / 255.0;
    return [UIColor colorWithRed:red green:green blue:blue alpha:1];
}
- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    UIScrollView *sv = [UIScrollView new];
    [self.view addSubview:sv];
    [sv mas_makeConstraints:^(MASConstraintMaker *make) {
        //设置滚动视图全屏
        make.edges.equalTo(0);
    }];
     UIView *lastView = nil;
    for(NSInteger i = 0;i<6;i++){
        UIView *view = [UIView new];
        view.backgroundColor = [self randomColor];
        [sv addSubview:view];
        [view mas_makeConstraints:^(MASConstraintMaker *make) {
            make.top.bottom.equalTo(0);
            make.size.equalTo(sv);
            if (i == 0) {
                make.left.equalTo(0);
            }else{
                make.left.equalTo(lastView.mas_right);
                if (i == 5) {
                    make.right.equalTo(0);
                }
            }
        }];
        lastView = view;
    }
    sv.pagingEnabled = YES;
}