when home button pressed view origin changed?

Question

I have this code in viewDidLoad:

[self.navigationController setNavigationBarHidden:YES];
    self.edgesForExtendedLayout = UIRectEdgeNone;
    self.view.autoresizingMask = UIViewAutoresizingFlexibleHeight;
    self.view.backgroundColor = [UIColor whiteColor];


    //we need to add white background behind the status bar
    CGFloat statusBarHeight = [UIApplication sharedApplication].statusBarFrame.size.height;
    UIView* statusBarWhiteBackGround = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, statusBarHeight)];
    [statusBarWhiteBackGround setBackgroundColor:[UIColor whiteColor]];
    [self.view addSubview:statusBarWhiteBackGround];

    UIView * redBackGroundColor  = [[UIView alloc] init];
    [redBackGroundColor setBackgroundColor:[UIColor redColor]];
    redBackGroundColor.frame =CGRectMake(0,statusBarHeight , self.view.frame.size.width, self.view.frame.size.height-statusBarHeight);
    [self.view addSubview:redBackGroundColor];

statusWhiteBackGround view is used to change the color of the status bar. here is the result of the above code:

but when the app enter background and then back to foreground, the redBackGroundColor view change it's orging.y as you can see in the bellow picture:

what's the problem ?thanks

Answer 1

Create a UIView programatically on method

-(void)viewDidLayoutSubviews{

     screen=[[UIScreen mainScreen] bounds];

//Simple view
    self.customView = [[CustomAlertOKView alloc]initWithFrame:CGRectMake(0, 20, screen.size.width, screen.size.height)];

     [self.view addSubView:customView];

}

or

Create a view using storyboard and set the x as 0, y value as 20,width and height based on the screen size

@IBOutlet UIView *customView;

set the outlet in the storyboard,

Then set the background color of the custom view to redcolor and main view to white color

self.view.backgroundColor = [UIColor whiteColor];
customView.backgroundColor = [UIColor redColor];