IOS 8 display App Corner label

1. The IOS 8 Corner display requires user authorization to request authorization when the app starts:

-(BOOL) Application: (UIApplication *) application didfinishlaunchingwithoptions: (Nsdictionary *) launchoptions {if([[Uidevice currentdevice].systemversion Doublevalue] >=8.0) {Uiusernotificationtype types= Uiusernotificationtypebadge | Uiusernotificationtypesound |Uiusernotificationtypealert; Uiusernotificationsettings*notificationsettings =[uiusernotificationsettings settingsfortypes:types Categories:nil];        [[UIApplication sharedapplication] registerusernotificationsettings:notificationsettings]; }        Else{uiremotenotificationtype Types= Uiusernotificationtypebadge | Uiusernotificationtypesound |Uiusernotificationtypealert;        [[UIApplication sharedapplication] registerforremotenotificationtypes:types]; }            returnYES; }

2. Display the angle label:

- (void) showbadgenumbers{
　　 Request Method (the server returns the specified data datas)

　　 // If no new data      if([Datas isequaltostring:@"0"]) {[Self cleanbadgenumber]; }    Else    {        //Tabbaritem The upper right corner shows no readingsSelf.tabBarItem.badgeValue =datas; //app not read in top right corner[UIApplication Sharedapplication].applicationiconbadgenumber =Datas.intvalue; }}

3. Clear the corner mark:

-(void) cleanbadgenumber{    //  Tabbaritem The top right corner shows the number of    unread tweets Self.tabBarItem.badgeValue = nil;     // app Unread Weibo is displayed in top right corner of application    0 ;}

4. Set Timer Automatic call

-(void
{    [Super Viewdidload];
// show no readings    Nstimer *timer = [Nstimer scheduledtimerwithtimeinterval:  target:self selector: @selector ( showbadgenumbers) Userinfo:nil Repeats:yes];     // Join Runloop     [[Nsrunloop Mainrunloop] Addtimer:timer formode:nsrunloopcommonmodes]; }

5. The app goes into the background to continue calling

-(void) Applicationdidenterbackground: (UIApplication *
{    //  apply for background run qualification to operating system, background run time is controlled by system    __block uibackgroundtaskidentifier taskidentifier = [ Application beginbackgroundtaskwithexpirationhandler:^{        //  Background run time has ended                 / /  End Task         [application endbackgroundtask:taskidentifier];    }];}

IOS 8 display App Corner label