iOS 视图层次管理 sendSubviewToBack、bringSubviewToFront

直接上代码

– (void)viewDidLoad {[super viewDidLoad];// Do any additional setup after loading the view, typically from a nib.UIView *view1 = [[UIView alloc] initWithFrame:CGRectMake(10, 50, 100, 50)];view1.backgroundColor = [UIColor blueColor];[self.view addSubview:view1];UIView *view2 = [[UIView alloc] initWithFrame:CGRectMake(15, 55, 100, 50)];view2.backgroundColor = [UIColor grayColor];[self.view addSubview:view2];//如果将下面两行代码都注释掉 view1 会在下面 view2会在上面// 下面这行代码能够将view2 调整到父视图的最下面// [self.view sendSubviewToBack:view2];//将view调整到父视图的最上面[self.view bringSubviewToFront:view1];}

，勇敢的冷静的理智的去接受失败，有时不但是必要的，而且是很有必要的。