038 changing the color of the status bar (extended knowledge: Message notification knowledge about different versions of iOS)

The effect is as follows:

ViewController.h

1 #import <UIKit/UIKit.h>23@interface  viewcontroller: Uiviewcontroller4@end

Viewcontroller.m

1 #import "ViewController.h"2 3 @interfaceViewcontroller ()4- (void) Usernotificationdidpush: (UIApplication *) Application;5 @end6 7 @implementationViewcontroller8 9- (void) Viewdidload {Ten [Super Viewdidload];  One  AUILabel *lblmessage = [[UILabel alloc] Initwithframe:cgrectinset (Self.view.bounds, -, -)]; -Lblmessage.autoresizingmask = Uiviewautoresizingflexiblewidth |Uiviewautoresizingflexibleheight; -Lblmessage.text =@"need to add line view controller-based status bar appearance=no in PL file; Toggle status bar color after touch screen"; theLblmessage.numberoflines =0; -Lblmessage.textalignment =Nstextalignmentcenter; -Lblmessage.textcolor =[Uicolor Browncolor]; -Lblmessage.backgroundcolor =[Uicolor Whitecolor]; + [Self.view Addsubview:lblmessage];  -  +Self.navigationItem.prompt =@"look at the color change in the status bar"; ASelf.navigationItem.title =@"change the color of the status bar"; at } -  -- (void) didreceivememorywarning { - [Super didreceivememorywarning]; -     //Dispose of any resources the can be recreated. - } in  -- (void) touchesended: (Nsset *) touches withevent: (Uievent *)Event { toUIApplication *application =[UIApplication sharedapplication]; +     //status bar style toggle -     if(Application.statusbarstyle = =Uistatusbarstyledefault) { theApplication.statusbarstyle =uistatusbarstylelightcontent; *}Else { $Application.statusbarstyle =Uistatusbarstyledefault;Panax Notoginseng     }    -  the [self usernotificationdidpush:application]; + } A  the /** + * Extended Knowledge: Message notification knowledge about different versions of iOS -  * $ * @param application shared uiapplication Singleton mode object instance $  */ -- (void) Usernotificationdidpush: (UIApplication *) Application { -     //number of application icon markers the     //because the Registerusernotificationsettings method is a iOS8 method, it cannot be used in the following versions of IOS8; -     if([[[[Uidevice Currentdevice] systemversion] Floatvalue] >=8.0) {WuyiUiusernotificationsettings *settings =[uiusernotificationsettings Settingsfortypes:uiusernotificationtypebadge categories:nil]; the [Application registerusernotificationsettings:settings]; -}Else { Wu [Application registerforremotenotifications]; -     } AboutApplication.applicationiconbadgenumber =3;//number of Message tokens for the application icon $     //Self.tabBarItem.badgeValue = @ "3";//number of message markers on the bottom tab -  -     /*determine if push push notifications are open; same as above. Separate processing required - uiremotenotificationtype types; A if ([[[[ Uidevice Currentdevice] systemversion] floatvalue] >= 8.0) { + types = [[UIApplication sharedapplication] currentusernotificationsettings].types; the } else { - types = [[UIApplication sharedapplication] enabledremotenotificationtypes]; $      } the BOOL isenablednotification = types & Uiremotenotificationtypealert; the     */ the } the  - @end

AppDelegate.h

1 #import <UIKit/UIKit.h>23@interface Appdelegate:uiresponder < Uiapplicationdelegate>4 @property (Strong, Nonatomic) UIWindow *window; 5 @property (Strong, Nonatomic) Uinavigationcontroller *Navigationcontroller; 6 7 @end

Appdelegate.m

1 #import "AppDelegate.h"2 #import "ViewController.h"3 4 @interfaceappdelegate ()5 @end6 7 @implementationappdelegate8 9-(BOOL) Application: (UIApplication *) application didfinishlaunchingwithoptions: (Nsdictionary *) launchoptions {Ten_window =[[UIWindow alloc] initwithframe:[[uiscreen mainscreen] bounds]; OneViewcontroller *viewcontroller =[[Viewcontroller alloc] init]; A_navigationcontroller =[[Uinavigationcontroller alloc] initwithrootviewcontroller:viewcontroller]; -_window.rootviewcontroller =_navigationcontroller; - [_window Addsubview:_navigationcontroller.view]; the [_window makekeyandvisible]; -     returnYES; - } -  +- (void) Applicationwillresignactive: (UIApplication *) Application { - } +  A- (void) Applicationdidenterbackground: (UIApplication *) Application { at } -  -- (void) Applicationwillenterforeground: (UIApplication *) Application { - } -  -- (void) Applicationdidbecomeactive: (UIApplication *) Application { in } -  to- (void) Applicationwillterminate: (UIApplication *) Application { + } -  the @end

038 changing the color of the status bar (extended knowledge: Message notification knowledge about different versions of iOS)