ios background task timer

method of adding key values, iOS provides two ways to make your application work in the background:The task completion-application can request additional time from the system to complete a given taskLocal notifications-applications can schedule time to perform local notifications delivery for long background tasks: Applications can request to run in the

];alarm.repeatInterval = 0;alarm.soundName = UILocalNotificationDefaultSoundName;alarm.alertBody = @"Time to request MOA2 Server!";[app scheduleLocalNotification:alarm];}}elseif([app applicationState] == UIApplicationStateActive){UIAlertView *alertView = [[[UIAlertView alloc] init] autorelease];[alertView setTitle:@"alert"];[alertView setMessage:@"Time to request MOA2 Server!"];[alertView addButtonWithTitle:NSLocalizedString(@"cancel", nil)];[alertView setDelegate:nil];[alertView show];}}

, nonatomic) CGFloat mCount;-(void) Viewdidload {[Super Viewdidload];_mcount = 0;Nstimer *timer = [Nstimer scheduledtimerwithtimeinterval:10 target:self selector: @selector (counttime) Userinfo:nil Repeats:yes];[[Nsrunloop Currentrunloop] Addtimer:timer formode:nsrunloopcommonmodes];}-(void) counttime{_mcount+=10;NSLog (@ "%f", _mcount);if ([[UIApplication sharedapplication] backgroundtimeremaining] NSLog (@ "Play%@", [Nsthread CurrentThread]);[Self p

Initializing Audiosession and basic configurationThe audio player uses the Avplayer, when the program starts the need to configure the audiosession,audiosession is responsible for the application of audio settings, such as support does not support the background, interrupt and so on, this step is very important, For example, after initializing Avplayer in Viewdidload, call the following function:/** Set Audio Session *///This way

When we use an app, when we press the program into the background, we want it to be able to fetch some data from the server, similar to Weibo, QQ, these programs are pressed backstageAfter that, we can still see the unread number displayed on the icon. But iOS is a pseudo-multitasking operating system.After we have the program in the background, about 1 minutes,

Recently do a project, need to let the app in the background for a long time, because this project belongs to the music class, has also been heard that the app can enter the background after the system to apply for a Background Task,But this task only keeps the app running a

Find some code about the iOS background where you can continue to perform tasks, share:First, you need to configure the Info-plist file, create a new required background modes inside. This is an array, where the following is added:APP provides Voice over IP services (VOIP)APP plays audio or streams audio/video using AirPlay (audio)APP processes Newsstand Kit down

The iOS program enters the background, including the research that the user pulls a shortcut menu and causes the program to become inactive. When I was using an App today, I suddenly found that the program video was being played while pulling the menu! It aroused my interest.First, list two methods. The first method is the proxy of AppDelegate, which is called when the program enters the

:^ (Afhttprequestoperation *operation, Nserror *error) {-if([Self.Delegaterespondstoselector: @selector (myAppHTTPClientDelegate:self:didFailWithError:)]) {-[Self.Delegatemyapphttpclientdelegate:self Didfailwitherror:error];- }- }];--[Operation start]; Updatensdictionary*s_request = @{@"par1": [NSString stringWithFormat:@"%i", Par1],@"par2": Par2,@"Par3": Par3,@"PAR4": [NSString stringWithFormat:@"%i", PAR4],@"PAR5": PAR5}; Afhttpsessionmanager* S_manager =[[Afhttpsessionmanager allo

not like this article, so we have to have a screening method. And this screening method is whereobjectkey:relatedto:, Relatedto Point is that I want to query the article, and Whereobjectkey point is the article corresponding to the user association relationship. As to why to add Whereobjectkey, it is because there may be multiple relationships in the post table that relate to user, such as the user who may be involved in the post, so reviews the article (associated with user relationships). we

have a screening method. And this screening method is whereobjectkey:relatedto:, Relatedto Point is that I want to query the article, and Whereobjectkey point is the article corresponding to the user association relationship. As to why to add Whereobjectkey, it is because there may be multiple relationships in the post table that relate to user, such as the user who may be involved in the post, so reviews the article (associated with user relationships). we can understand that in the previous s