uiapplication

state for a while. The time will then go into the suspended state (Suspended). Some programs can be in Backgroud state for a long time after special requestThe Suspended suspend program cannot execute code in the background. The system automatically turns the program into this state and does not give notice. When suspended, the program is still in memory, when the system memory is low, the system will remove the suspended program, to provide more memory for the foreground program.is the program

execute code, most programs enter this state will stay in this state for a while. The time will then go into the suspended state (Suspended). Some programs can be in Backgroud state for a long time after special requestThe Suspended suspend program cannot execute code in the background. The system automatically turns the program into this state and does not give notice. When suspended, the program is still in memory, when the system memory is low, the system will remove the suspended program, t

The effect is as follows:ViewController.h1 #import 23@interface viewcontroller: Uiviewcontroller4@endViewcontroller.m1 #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.autoresizingm

Posted by Li Gang Dec 1St , 10:12 pm iOS development The source of this article just online: http://www.superqq.com/blog/2015/12/01/jump-setting-per-page/Location ServicesLocation services have a lot of apps, if users close the location, then, we can prompt users in the app to open Location services. Click to set interface settings and jump directly to the location Service Settings screen. The code is as follows://定位服务设置界面NSURL *url = [NSURL URLWithString:@"prefs:root=LOCATION_SERVICES"];if

How to jump to the various setup interfaces in the system setupJump to more Settings screenIn addition to jumping to the WiFi settings screen, can you jump to the other settings screen? For example: Location services, FaceTime, music, and so on. Can be, together to see how to achieve!Location ServicesLocation services have a lot of apps, if users close the location, then, we can prompt users in the app to open Location services. Click to set interface settings and jump directly to the location S

state for a while. The time will then go into the suspended state (Suspended). Some programs can be in Backgroud state for a long time after special requestThe Suspended suspend program cannot execute code in the background. The system automatically turns the program into this state and does not give notice. When suspended, the program is still in memory, when the system memory is low, the system will remove the suspended program, to provide more memory for the foreground program.is the program

, including the socket used to connect to the VoIP service. Therefore, when the program runs, it needs to create the socket from scratch.C, in order to prevent disconnection, VoIP programs need to be periodically awakened to check its services. To make this behavior easier, iOS creates a special handle by using the (UIApplication Setkeepalivetimeout:handler:) method. You can create the handle in the Applicationdidenterbackground method. Once establish

first, the principle of program start1. 首先找到程序入口,执行main函数 Uiapplicationmain, Main2. UIApplicationMain底层做事情 1> Creating UIApplication Objects2> creates a proxy object for the uiapplication, and assigns a value to the UIApplication object Proxy property3> Open the main run loop, function receive event, keep the program running4> load Info.plist, judging by the wood

received. In the absence of event handling, the program usually stays in this stateThe active activation program runs in the foreground and receives the event. This is also a normal mode of the front deskBackgroud daemon in the background and can execute code, most programs enter this state will stay in this state for a while. The time will then go into the suspended state (Suspended). Some programs can be in Backgroud state for a long time after special requestThe Suspended suspend program can

:( UIApplication *) application didfinishlaunchingwitexceptions :( NSDictionary *) launchOptions {self. window = [[[UIWindow alloc] initWithFrame: [[UIScreen mainScreen] bounds] autorelease]; // Override point for customization after application launch. self. window. backgroundColor = [UIColor whiteColor];/* asynchronous request * // 1. obtain the network resource path (URL) NSURL * pURL1 = [NSURL URLWithString: URL]; // 2. create a request NSURLRequ

state for a while. The time will then go into the suspended state (Suspended). Some programs can be in Backgroud state for a long time after special requestThe Suspended suspend program cannot execute code in the background. The system automatically turns the program into this state and does not give notice. When suspended, the program is still in memory, when the system memory is low, the system will remove the suspended program, to provide more memory for the foreground program.is the program

Suspended suspend program cannot execute code in the background. The system automatically turns the program into this state and does not give notice. When suspended, the program is still in memory, when the system memory is low, the system will remove the suspended program, to provide more memory for the foreground program.is the program state change diagram:Callback for the agent when each program is running state:-(BOOL) Application: (UIApplication

A. Concept1. Mobile app is very susceptible to other system, software event interference, such as call, lock screen 2.app is disturbed, UIApplication will notify delegate, to Agent processing interference event 3.delegate can handle events (1) App Declaration cycle (start , close) (2) system events (incoming calls) (3) Emergency (Memory warning)B. UseConditions called delegate: compliance with the Uiapplicationdelegate Protocol project will be created

iOS local notifications are using OC's Uilocalnotification object, adding a notification is simple, creating a Uilocalnotification object to set some corresponding parameters on the line.Add Local Notifications1 //Add local push2NSDate *date = [NSDate datewithtimeintervalsincenow:Ten];3Uilocalnotification *noti =[[Uilocalnotification alloc] init];4 if(Noti) {5 //Set the time6Noti.firedate =date;7 //Setting the time zone8Noti.timezone =[Nstimezone Defaulttimezone];9 //

Divided into local push and remote push 2 kinds. You can give the user a hint when the app is not open or even the phone lock screen. They all need to register, after registering the system will pop up a prompt box (such as) prompt the user whether consent, if the consent is normal use; If the user does not agree to the next time the program will not pop up the prompt box, you need to set the user to the settings. A total of three types of tips:Uiusernotificationtypebadge//Application icon in th

Openurl usage: View plaincopyTo clipboardprint? [[Uiapplication sharedapplication] Openurl: [nsurl urlwithstring: appstring]; [[Uiapplication sharedapplication] Openurl: [nsurl urlwithstring: appstring]; The system appstring includes: View plaincopyTo clipboardprint? Map http://maps.google.com/maps? Q = Shanghai Email mailto: // myname@google.com Tel: // 10086 Msg sms: // 10086 Map http://maps.go

; // application icon prompt -- the default value is 0, which is not changed. If it is set to a negative number, the locationNo will disappear when the notification arrives. applicationIconBadgeNumber =-1; // directly set the application icon to 0, indicating that the application is hidden, which is consistent with the above [UIApplication sharedApplication]. applicationIconBadgeNumber = 0; // MARK: Extra information -- not important to users, but imp

[Basic iOS control and basic ios ControlA. Concept1. mobile apps are vulnerable to interference from other systems and software events, such as mains and screen lock. when the app is disturbed, UIApplication will notify delegate to process the interference event as a proxy. 3. events that delegate can handle (1) app declaration cycle (START and close) (2) system events (incoming calls) (3) Emergencies (memory warning)B. UseA condition called delegate:

can terminate the program when the memory pressure is high ). Even so, interrupting the application will release all the sockets, including the socket used to connect to the voip service. Therefore, when the program runs, it needs to create a socket from scratch. C. To prevent disconnection, the voip program needs to be awakened regularly to check its services. To achieve this easily, IOS creates a special handle by using the (UIApplication setKeepA

The common singleton classes are: Cocoa Touch frame: uiapplication; Nsuserdefaults; Nsnotification; NSBundle; Cocoa frame: nsfilemanager; Nsworkspace; NSApplication. The UIApplication class provides a centralized point of control and coordination for apps running on IOS. Every app must has exactly one instance of UIApplication (or a subclass of