UIView的自适应（代码实现）

效果：（代码中只对大的view的frame进行的修改，但是view的子视图的frame跟着改变）

这段代码大概是现实的是每点击button一次的时候，view的frame改变，然后view1的frame也会跟着变化，但是view1是受view的约束的。

实现方式（在写好两个view的基础上，其中view1是添加在view上）：

第1步：

设置view的autoresizesSubviews为YES， 即：view.autoresizesSubviews = YES;允许子视图自适应。

第二步：

设置view1的autoresizingMask

即：

view1.autoresizingMask = UIViewAutoresizingFlexibleRightMargin|UIViewAutoresizingFlexibleLeftMargin|UIViewAutoresizingFlexibleTopMargin|UIViewAutoresizingFlexibleBottomMargin|UIViewAutoresizingFlexibleWidth|

        UIViewAutoresizingFlexibleHeight;

我这里是选择了多种autoresizingMask的类型，你们可以根据自己的实际情况去设置，可以每个试一下。

- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.

    UIView *view = [[UIView alloc]initWithFrame:CGRectMake(100, 100, 100, 100)];

    view.backgroundColor = [UIColor yellowColor];

    view.autoresizesSubviews = YES;

    view.tag = 1001;

    [self.view addSubview:view];

 

    UIView *view1 = [[UIView alloc]initWithFrame:CGRectMake(25, 25, 50, 50)];

    view1.backgroundColor = [UIColor redColor];

    view1.autoresizingMask = UIViewAutoresizingFlexibleRightMargin|UIViewAutoresizingFlexibleLeftMargin|UIViewAutoresizingFlexibleTopMargin|UIViewAutoresizingFlexibleBottomMargin|UIViewAutoresizingFlexibleWidth|

        UIViewAutoresizingFlexibleHeight;

    [view addSubview:view1];

    

    UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem];

    button.frame = CGRectMake(10, 600, 355, 30);

    button.backgroundColor = [UIColor blackColor];

    [button addTarget:self action:@selector(buttonAction:) forControlEvents:(UIControlEventTouchUpInside)];

    [self.view addSubview:button];

    

}

 

- (void)buttonAction:(UIButton*)sender

{

    UIView *view = [self.view viewWithTag:1001];

    view.frame = CGRectMake(view.frame.origin.x-5, view.frame.origin.y-5, view.frame.size.width+10, view.frame.size.height+10);

}