Odtnhj

I want to add a view under my tab bar analog in iOS and then show it with animation coming from behind it. But when I use my code, the view that must come from behind my tab bar overlaps my tab bar for a while.

This is my code:

- (void)handlePressedButton 
if (pressedButton.selected) 
 [UIView beginAnimations:nil context:nil];
 [UIView setAnimationDuration:0.5];
 CGAffineTransform transform1 = CGAffineTransformMakeTranslation(-196.0, 0.0);
 CGAffineTransform transform2 = CGAffineTransformMakeTranslation(0.0, 0.0);
 [leftPanelView setTransform:transform1];
 [movedView setTransform:transform2];
 [UIView commitAnimations];
 pressedButton.selected = NO;

else 
 pressedButton.selected = YES;
 if (leftPanelView) 
 [leftPanelView removeFromSuperview];
 leftPanelView = nil;
 
 CGRect viewFrame = CGRectMake(-196, 0, 236, 748);
 leftPanelView = [[UIView alloc] initWithFrame:viewFrame];
 leftPanelView.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"left-nav-content.png"]];

 // Code to populate leftPanelView according to what button is pressed.
 [self populateLeftPanelView];

 [UIView beginAnimations:nil context:nil];
 [UIView setAnimationDuration:0.5];
 [self.view addSubview:leftPanelView];
 CGAffineTransform transform1 = CGAffineTransformMakeTranslation(236.0, 0.0);
 CGAffineTransform transform2 = CGAffineTransformMakeTranslation(112.0, 0.0);
 [leftPanelView setTransform:transform1];
 [movedView setTransform:transform2];
 [UIView commitAnimations];

Here the leftPanelView is the view that must come under a tab bar. Moved view is another view, that is at the right of left panel (don't mind it)

try sendSubviewToBack

[self.view sendSubviewToBack:leftPanelView];

Besides addSubview, there are other methods you can rely on to add your view:

– insertSubview:aboveSubview:
– insertSubview:belowSubview:
– insertSubview:atIndex:

You can control the index (actually z-index, or layer order) of the view using these methods.

Oh, I found a solution myself. I added after this:

[UIView beginAnimations:nil context:nil];
 [UIView setAnimationDuration:0.5];
 [self.view addSubview:leftPanelView];

this line:

[self.view sendSubviewToBack:leftPanelView];

Swift

Insert a view below another view in the view hierarchy:

view.insertSubview(subview1, belowSubview: subview2)

Insert a view above another view in the view hierarchy:

view.insertSubview(subview1, aboveSubview: subview2)

Insert a subview at the specified index:

view.insertSubview(subview, at: index)

Move the specified subview so that it appears behind its siblings:

subview1.sendSubviewToBack(subview2)

Move the specified subview so that it appears on top of its siblings:

subview1.bringSubviewToFront(subview2)

Exchange the subviews at the specified indices:

view.exchangeSubview(at: index1, withSubviewAt: index2)

In Swift 4.2

self.view.sendSubviewToBack(leftPanelView)