Screen Adaptation Techniques for iOS6 and iOS7

1. No navigation controller or UITabBarController is packaged

1. When the Controller's view is UIScrollView \ UITableView \ UICollectionView (when the controller is UITableViewController)

-(Void) viewDidLoad

{

[Super viewDidLoad];

// # Ifdef _ IPHONE_7_0 indicates whether to run in Xcode5. The following code is available only in Xcode5.

# Ifdef _ IPHONE_7_0

If ([[UIDevice currentDevice]. systemVersion floatValue]> = 7.0 ){

Self. tableView. contentInset = UIEdgeInsetsMake (20, 0, 0, 0 );

}

# Endif

}

 

2. The Controller's view is a normal UIView, not a UIScrollView

# Ifdef _ IPHONE_7_0

-(Void) viewDidLayoutSubviews

{

// IOS7 & No packaged navigation Controller

If ([[UIDevice currentDevice]. systemVersion floatValue]> = 7.0 & self. navigationController = nil ){

CGFloat top = [self. topLayoutGuide length];

// Whether scrolling is supported

If ([self. view isKindOfClass: [UIScrollView class]) {

UIScrollView * scroll = (UIScrollView *) self. view;

Scroll. contentInset = UIEdgeInsetsMake (top, scroll. contentInset. left, scroll. contentInset. bottom, scroll. contentInset. right );

} Else {

CGRect bounds = self. view. bounds;

Bounds. origin. y =-top;

Self. view. bounds = bounds;

}

}

}

# Endif

 

Ii. Packaging of navigation controllers

1> the Controller's view is not UIScrollView

# Ifdef _ IPHONE_7_0

If ([[UIDevice currentDevice]. systemVersion floatValue]> = 7.0 ){

Self. edgesForExtendedLayout = UIRectEdgeNone;

}

# Endif

 

2> the Controller's view is UIScrollView.

No additional code adaptation required

 

Iii. Other cases (the above situations do not require a crash, as long as you master the following rules)

1. You want to move the view content down.

1> set bounds's y value in UIView

2> UIScrollView: Set the top value of contentInset.

 

2. Prevent the view of the sub-controller from being overwritten by the navigation bar or tabbar.

Self. edgesForExtendedLayout = UIRectEdgeNone;

 

Iv. Multi-controller nested processing

1. When multiple controllers are nested, the most reasonable solution is: UITabBarController nested UINavigationController

2. When the direct parent controller of UITableViewController is UINavigationController, no adaption code is required.

3. Other non-UITableViewController codes must be added.

# Ifdef _ IPHONE_7_0

If ([[UIDevice currentDevice]. systemVersion floatValue]> = 7.0 ){

Self. edgesForExtendedLayout = UIRectEdgeNone;

}

# Endif