凹凸累out

/**
 *
 */

UIView *viwe1 = [[UIView alloc] initWithFrame:CGRectMake(100, 100, 120, 80)];
viwe1.backgroundColor = [UIColor redColor];
viwe1.translatesAutoresizingMaskIntoConstraints = NO;
[self.view addSubview:viwe1];

UIView *view2 = [[UIView alloc] initWithFrame:CGRectMake(80, 200, 100, 60)];
view2.backgroundColor = [UIColor orangeColor];
view2.translatesAutoresizingMaskIntoConstraints = NO;
[self.view addSubview:view2];


/**
 *  pppp
 */
NSLayoutConstraint *view1With = [NSLayoutConstraint constraintWithItem:viwe1 attribute:NSLayoutAttributeWidth relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeNotAnAttribute multiplier:0 constant:150];
NSLayoutConstraint *view1Hight = [NSLayoutConstraint constraintWithItem:viwe1 attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeNotAnAttribute multiplier:0 constant:150];
[viwe1 addConstraint:view1With];
[viwe1 addConstraint:view1Hight];
NSLayoutConstraint *view1OriginX = [NSLayoutConstraint constraintWithItem:viwe1 attribute:NSLayoutAttributeLeading relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeLeading multiplier:1.0 constant:20];
NSLayoutConstraint *view1OriginY = [NSLayoutConstraint constraintWithItem:viwe1 attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:self.view attribute:NSLayoutAttributeTop multiplier:1.0 constant:100];
[self.view addConstraint:view1OriginX];
[self.view addConstraint:view1OriginY];



NSLayoutConstraint *with = [NSLayoutConstraint constraintWithItem:view2 attribute:NSLayoutAttributeWidth relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeNotAnAttribute multiplier:0 constant:10];
[view2 addConstraint:with];

    NSLayoutConstraint *higth = [NSLayoutConstraint constraintWithItem:view2 attribute:NSLayoutAttributeHeight relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeNotAnAttribute multiplier:0 constant:10];
[view2 addConstraint:higth];

NSLayoutConstraint *originX = [NSLayoutConstraint constraintWithItem:view2 attribute:NSLayoutAttributeLeading relatedBy:NSLayoutRelationEqual toItem:viwe1 attribute:NSLayoutAttributeLeading multiplier:1.0 constant:0];
NSLayoutConstraint *originY = [NSLayoutConstraint constraintWithItem:view2 attribute:NSLayoutAttributeTop relatedBy:NSLayoutRelationEqual toItem:viwe1 attribute:NSLayoutAttributeBottom multiplier:1.0 constant:120];
[self.view addConstraint:originX];
[self.view addConstraint:originY];