Notification Center only with nsnotificationcenter value and call, send SMS, mail, open Web page directly open function

Use of notification hubs

Page three of the first;

1. An object that produces a notification hub (a singleton class for the system)

2. Registering an observer in the Notification Center

3. Methods called after receiving a notification

4. DEALLOC remove the Observer's identity
   

A second page

1. Send notification hubs

2. Create a dictionary

3. Return the data you want

function of Direct jump

The function of jumping directly into;    call [[UIApplication sharedapplication] openurl:[nsurl urlwithstring:@ "tel://110"];    texting [[uiapplication sharedapplication] openurl:[nsurl urlwithstring:@ "sms://1010"];    mail [[uiapplication sharedapplication] Openurl:[nsurl urlwithstring:@ "Mail://[email protected]"]; Open Web page [[uiapplication sharedapplication] openurl:[nsurl urlwithstring:@ "http://www.baidu.com"];

Notification Center

First page

-  (void) viewdidload{    [super viewdidload];    // do  any additional setup after loading the view.     self.view.backgroundcolor = [uicolor redcolor];    self.title = @ "First page";     //notification hub uses     //to generate a notification hub object   (a singleton class for the system)      NSNotificationCenter *center = [NSNotificationCenter defaultCenter];         //register an observer in the Notification Center     //parameter 1: Observer     // Parameter 2:    What to do after the viewer receives the notification     //parameter 3: Observe what things   (a string tag)     //parameter 4:    limit the object of notification     [center addobserver:self selector: @selector (Suibian:)  name:@ "I'm so sleepy, I want to sleep ____99"  object:nil];                  uibutton *button = [[uibutton alloc] initwithframe:cgrectmake (100, 100,  100, 30)];    [button settitle:@ "button"  forState:UIControlStateNormal];     button.backgroundcolor = [uicolor blackcolor];    [ Self.view addsubview:button];    [button addtarget:self action: @selector ( ButtonClick:)  forcontrolevents:uicontroleventtouchupinside];    [button release]         }//method called after receiving notification-  (void) Suibian: (nsnotification *) Noti {    self.view.backgroundcolor = noti.object;  //receive changes to the color of the collection      nslog (@ "object:%@", Noti.object),     nslog (@ "userinfo%@", Noti.userInfo);     nslog (@ "receive notification");    }-  (void) dealloc{    // An object that is registered as an observer needs to be deallo by the systemBefore C, cancel your own observer identity     [[NSNotificationCenter defaultCenter] removeObserver:self];     [super dealloc];}

second page

-  (void) ButtonClick: (uibutton *) Button{//    firstviewcontroller *first  = [[firstviewcontroller alloc] init];        // Notification hubs use         //to send notifications     nsnotificationcenter  *center = [nsnotificationcenter defaultcenter];    //parameter 1: Send notification to that time     //parameter 2: Send notification can take one parameter     //parameter 3: If you want to pass more than one parameter, just spell a dictionary, fill in the third parameter      nsdictionary *dic = [nsdictionary dictionarywithobjectsandkeys:@ "Valur",  @ "Key",  nil];    uicolor *color = [uicolor darkgraycolor]; / /The color to return     [center postnotificationname:@ "I'm so sleepy, I want to sleep ____99"  object:/*@ "with parameters, paralysis, Trapped dead, "*/color userinfo:dic];            [. Self.navigationcontroller popTorootviewcontrolleranimated:yes];} 

This article is from "Xiao Liu _blog" blog, please be sure to keep this source http://liuyafang.blog.51cto.com/8837978/1557029

Notification Center only with nsnotificationcenter value and call, send SMS, mail, open Web page directly open function