UIView *superview                               = self.view;
 
UIView *view1                                   = [[UIView alloc] init];
view1.translatesAutoresizingMaskIntoConstraints = NO;
view1.backgroundColor                           = [UIColor redColor];
[superview addSubview:view1];
 
UIEdgeInsets padding                            = UIEdgeInsetsMake(200, 50, 200, 50);
 
[superview addConstraints:@[
 
                            //约束
                            [NSLayoutConstraint constraintWithItem:view1
                                                         attribute:NSLayoutAttributeTop
                                                         relatedBy:NSLayoutRelationEqual
                                                            toItem:superview
                                                         attribute:NSLayoutAttributeTop
                                                        multiplier:1.0
                                                          constant:padding.top],
 
                            [NSLayoutConstraint constraintWithItem:view1
                                                         attribute:NSLayoutAttributeLeft
                                                         relatedBy:NSLayoutRelationEqual
                                                            toItem:superview
                                                         attribute:NSLayoutAttributeLeft
                                                        multiplier:1.0
                                                          constant:padding.left],
 
                            [NSLayoutConstraint constraintWithItem:view1
                                                         attribute:NSLayoutAttributeBottom
                                                         relatedBy:NSLayoutRelationEqual
                                                            toItem:superview
                                                         attribute:NSLayoutAttributeBottom
                                                        multiplier:1.0
                                                          constant:-padding.bottom],
 
                            [NSLayoutConstraint constraintWithItem:view1
                                                         attribute:NSLayoutAttributeRight
                                                         relatedBy:NSLayoutRelationEqual
                                                            toItem:superview
                                                         attribute:NSLayoutAttributeRight
                                                        multiplier:1
                                                          constant:-padding.right],
 
                            ]];

UIView  *childView=[UIView new];
[childView setBackgroundColor:[UIColor redColor]];
//先将子View加入在父视图中
[self.view addSubview:childView];
__weak typeof(self) weakSelf = self;
UIEdgeInsets padding = UIEdgeInsetsMake(200, 50, 200, 50);
[childView mas_makeConstraints:^(MASConstraintMaker *make) {
    make.edges.equalTo(weakSelf.view).with.insets(padding);
}];

UIView  *childView=[UIView new];
[childView setBackgroundColor:[UIColor redColor]];
//先将子View加入在父视图中
[self.view addSubview:childView];
__weak typeof(self) weakSelf = self;
[childView mas_makeConstraints:^(MASConstraintMaker *make) {
    //设置大小
    make.size.mas_equalTo(CGSizeMake(100, 100));
    //居中
    make.center.equalTo(weakSelf.view);
}];

/**
 *  Creates a MASConstraintMaker with the callee view.
 *  Any constraints defined are added to the view or the appropriate superview once the block has finished executing
 *
 *  @param block scope within which you can build up the constraints which you wish to apply to the view.
 *
 *  @return Array of created MASConstraints
 */
- (NSArray *)mas_makeConstraints:(void(^)(MASConstraintMaker *make))block;
 
/**
 *  Creates a MASConstraintMaker with the callee view.
 *  Any constraints defined are added to the view or the appropriate superview once the block has finished executing.
 *  If an existing constraint exists then it will be updated instead.
 *
 *  @param block scope within which you can build up the constraints which you wish to apply to the view.
 *
 *  @return Array of created/updated MASConstraints
 */
- (NSArray *)mas_updateConstraints:(void(^)(MASConstraintMaker *make))block;
 
/**
 *  Creates a MASConstraintMaker with the callee view.
 *  Any constraints defined are added to the view or the appropriate superview once the block has finished executing.
 *  All constraints previously installed for the view will be removed.
 *
 *  @param block scope within which you can build up the constraints which you wish to apply to the view.
 *
 *  @return Array of created/updated MASConstraints
 */
- (NSArray *)mas_remakeConstraints:(void(^)(MASConstraintMaker *make))block;

UIView  *childView=[UIView new];
[childView setBackgroundColor:[UIColor greenColor]];
//先将子View加入在父视图中
[self.view addSubview:childView];
__weak typeof(self) weakSelf = self;
[childView mas_makeConstraints:^(MASConstraintMaker *make) {
    //距离顶部44
    make.top.equalTo(weakSelf.view.mas_top).with.offset(44);
    //距离左边30
    make.left.equalTo(weakSelf.view.mas_left).with.offset(30);
    //距离右边30，注意是负数
    make.right.equalTo(weakSelf.view.mas_right).with.offset(-30);
    //高度150
    make.height.mas_equalTo(@150);
}];

UIView  *childView=[UIView new];
[childView setBackgroundColor:[UIColor greenColor]];
//先将子View加入在父视图中
[self.view addSubview:childView];
__weak typeof(self) weakSelf = self;
[childView mas_makeConstraints:^(MASConstraintMaker *make) {
    //距离顶部44
    make.top.equalTo(weakSelf.view.mas_top).with.offset(44);
    //距离左边30
    make.left.equalTo(weakSelf.view.mas_left).with.offset(30);
    //距离右边30，注意是负数
    make.right.equalTo(weakSelf.view.mas_right).with.offset(-30);
    //高度150
    make.height.mas_equalTo(@150);
}];
//地址:http://www.cnblogs.com/xiaofeixiang/
UIView *nextView=[UIView new];
[nextView setBackgroundColor:[UIColor redColor]];
[self.view addSubview:nextView];
[nextView mas_makeConstraints:^(MASConstraintMaker *make) {
    make.top.equalTo(childView.mas_bottom).with.offset(30);
    make.right.equalTo(childView.mas_right).with.offset(-30);
    make.width.mas_equalTo(@100);
    make.height.mas_equalTo(@100);
}];

    UIView  *childView=[UIView new];
    [childView setBackgroundColor:[UIColor greenColor]];
    //先将子View加入在父视图中
    [self.view addSubview:childView];
    __weak typeof(self) weakSelf = self;
    [childView mas_makeConstraints:^(MASConstraintMaker *make) {
        make.top.and.left.mas_equalTo(weakSelf.view).with.offset(100);
        make.bottom.and.right.mas_equalTo(weakSelf.view).with.offset(-100);
        //第二种写法更简单，相对于就是父视图
//        make.top.and.left.mas_equalTo(100);
//        make.bottom.and.right.mas_equalTo(-100);
    }];
     
    UILabel *label=[UILabel new];
    [label setText:@"博客园-FlyElephant"];
    [label setTextColor:[UIColor redColor]];
    [label setTextAlignment:NSTextAlignmentCenter];
    [self.view addSubview:label];
    [label mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.mas_equalTo(weakSelf.view).with.offset(10);
        make.height.mas_equalTo(20);
        make.right.mas_equalTo(weakSelf.view).with.offset(-10);
        make.bottom.mas_equalTo(weakSelf.view).with.offset(-50);
    }];