iOS开发Masonry与Frame布局差异示例详解

#import "ViewController.h"
#import <Masonry/Masonry.h>
@interface ViewController ()
@property (nonatomic, strong)UIView *view1;
@property (nonatomic, strong)UIView *view2;
@property (nonatomic, strong)UIView *view3;
@end
@implementation ViewController
- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    [self.view addSubview:self.view1];
    [self.view addSubview:self.view2];
    [self.view addSubview:self.view3];
    [self.view1 mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.mas_equalTo(14.272189);
        make.right.mas_equalTo(-14.272189);
        make.top.mas_equalTo(50);
        make.height.mas_equalTo(89.795858);
    }];
    [self.view2 mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.mas_equalTo(30);
        make.top.mas_equalTo(200);
        make.size.mas_equalTo(CGSizeMake(172.455621, 89.795858));
    }];
    self.view3.frame = CGRectMake(30, 400, 172.455621, 89.795858);
}
- (void)viewDidLayoutSubviews {
    [super viewDidLayoutSubviews];
    NSLog(@"view1:%lf,%lf,%lf,%lf",self.view1.frame.origin.x,self.view1.frame.size.width,self.view1.frame.size.height,self.view.frame.size.width-(14.272189*2));
    NSLog(@"view2:%lf,%lf",self.view2.frame.size.width,self.view2.frame.size.height);
    NSLog(@"view3:%lf,%lf",self.view3.frame.size.width,self.view3.frame.size.height);
}
#pragma mark -
- (UIView *)view1 {
    if (!_view1) {
        _view1 = [[UIView alloc] init];
        _view1.backgroundColor = [UIColor redColor];
    }
    return _view1;
}
- (UIView *)view2 {
    if (!_view2) {
        _view2 = [[UIView alloc] init];
        _view2.backgroundColor = [UIColor blueColor];
    }
    return _view2;
}
- (UIView *)view3 {
    if (!_view3) {
        _view3 = [[UIView alloc] init];
        _view3.backgroundColor = [UIColor yellowColor];
    }
    return _view3;
}
@end