Lottie is a mobile library for Android and iOS that parses Adobe After Effects animations exported as json with bodymovin and renders the vector animations natively on mobile and through React Native!
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LOTAnimationView * animation = [ LOTAnimationView animationNamed : @"Lottie" ];
[ self . view addSubview : animation ];
[ animation playWithCompletion : ^ ( BOOL animationFinished ) {
// Do Something
}];
UIViewController Transition
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- ( id < UIViewControllerAnimatedTransitioning > ) animationControllerForPresentedController: ( UIViewController * ) presented
presentingController: ( UIViewController * ) presenting
sourceController: ( UIViewController * ) source {
LOTAnimationTransitionController * animationController = [[ LOTAnimationTransitionController alloc ] initWithAnimationNamed : @"vcTransition1"
fromLayerNamed : @"outLayer"
toLayerNamed : @"inLayer" ];
return animationController ;
}
- ( id < UIViewControllerAnimatedTransitioning > ) animationControllerForDismissedController: ( UIViewController * ) dismissed {
LOTAnimationTransitionController * animationController = [[ LOTAnimationTransitionController alloc ] initWithAnimationNamed : @"vcTransition2"
fromLayerNamed : @"outLayer"
toLayerNamed : @"inLayer" ];
return animationController ;
}
导航栏设为透明
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[ self . navigationController . navigationBar setBackgroundImage :[ UIImage new ] forBarMetrics : UIBarMetricsDefault ];
[ self . navigationController . navigationBar setShadowImage :[ UIImage new ]];
导航栏还原
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[ self . navigationController . navigationBar setBackgroundImage : nil forBarMetrics : UIBarMetricsDefault ];
[ self . navigationController . navigationBar setShadowImage : nil ];
Change UITextField Placeholder Color
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NSString * string = @"请输入Wi-Fi名称" ;
NSMutableAttributedString * attributedString = [[ NSMutableAttributedString alloc ] initWithString : string ];
[ attributedString addAttribute : NSForegroundColorAttributeName value :[ UIColor whiteColor ] range : NSMakeRange ( 0 , string . length )];
self . wifiNameTF . attributedPlaceholder = attributedString ;
KVO NSKeyValueObservingOptions
NSKeyValueObservingOptionNew：获取新值
UITextField nil While Editing
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- ( BOOL ) textField: ( UITextField * ) textField shouldChangeCharactersInRange: ( NSRange ) range replacementString: ( NSString * ) string
{
if ( range . location == 0 && string . length == 0 )
{
//textField is empty
}
return YES ;
}
UIKeyboardAppearance
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textField . keyboardAppearance = UIKeyboardAppearanceDark ;
UIView Transition Animation
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[ UIView transitionFromView : view1
toView : view2
duration : 2
options : animationTransitionType
completion : ^ ( BOOL finished ){
[ view1 removeFromSuperview ];
}];
[ self . view addSubview : view2 ];
UIView Fade In Fade Out
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[ view setAlpha : 0.f ];
[ UIView animateWithDuration : 2.f delay : 0.f options : UIViewAnimationOptionCurveEaseIn animations : ^ {
// fade in
[ view setAlpha : 1.f ];
} completion : ^ ( BOOL finished ) {
[ UIView animateWithDuration : 2.f delay : 0.f options : UIViewAnimationOptionCurveEaseInOut animations : ^ {
// fade out
[ view setAlpha : 0.f ];
} completion : nil ];
}];
Reachability
ReachableViaWiFi
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self . reachability = [ Reachability reachabilityForInternetConnection ];
[ self . reachability startNotifier ];
[ self . reachability stopNotifier ];
Wi-Fi Name
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+ ( NSString * ) currentWifiName {
NSArray * ifs = ( __bridge_transfer NSArray * ) CNCopySupportedInterfaces ();
NSString * ifnam = [ ifs firstObject ];
if ( ! ifnam ) {
return nil ;
}
NSDictionary * info = ( __bridge_transfer NSDictionary * ) CNCopyCurrentNetworkInfo (( __bridge CFStringRef ) ifnam );
return info [ @"SSID" ];
}
NetworkExtension
Configure VPN tunnels. Customize and extend core networking features.
Personal VPN
NEVPNManager: is used to create and manage VPN configurations and to control the resulting VPN tunnel connections.
UIViewController
UINavigationController
UITabBarController