First question is better is Estimote SDK or CoreLocation framework? I have app which is finding the beacons but now i must made an app which will find beacons when application is in background or even is terminated.
Setting up background detection is pretty automatic in iOS so long as you do it in your AppDelegate and receive callbacks in that class:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
_locationManager = [[CLLocationManager alloc] init];
_locationManager.delegate = self;
CLBeaconRegion *region;
region = [[CLBeaconRegion alloc] initWithProximityUUID:[[NSUUID alloc] initWithUUIDString:#"2F234454-CF6D-4A0F-ADF2-F4911BA9FFA6"] major: 1 minor: 1 identifier: #"region1"];
region.notifyEntryStateOnDisplay = YES;
[_locationManager startMonitoringForRegion:region];
[_locationManager startRangingBeaconsInRegion:region];
return YES;
}
You can read more about what you can expect from detection times in the background here:
http://developer.radiusnetworks.com/2013/11/13/ibeacon-monitoring-in-the-background-and-foreground.html
Related
I want to write location tracking app like "find my iphone" that runs in foreground,background and even terminating ( not running). Location will be sent to my server periodically time. I have searched in google and read many many documents,tutorials comments, codes about this topic. Then I have found this tutorial. But in this tutorial, location is sent to ".txt" file in foreground and background not terminating... I mean, when the app is killed, it is not relaunched in the background to send location ".txt" file .. So I have added and updated some codes to send location when it is not running.. However, I didn't do it... I mean, when I kill(close) the app in multitasking (double tapping home button), it is not sending to location...
Can you help me, how can I fix this problem?
Thanks in advance
- (void)locationManager:(CLLocationManager *)manager
didUpdateToLocation:(CLLocation *)newLocation
fromLocation:(CLLocation *)oldLocation
{
[self log:[NSString stringWithFormat:#"Background location %.06f %.06f %#" , newLocation.coordinate.latitude, newLocation.coordinate.longitude, newLocation.timestamp]];
}
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
id locationValue = [launchOptions objectForKey:UIApplicationLaunchOptionsLocationKey];
if (locationValue)
{
// create a new manager and start checking for sig changes
[self log:#"didFinishLaunchingWithOptions location key"];
m_locManager = [[CLLocationManager alloc] init];
[self log:#"didFinishLaunchingWithOptions created manager"];
m_locManager.delegate = self;
[self log:#"didFinishLaunchingWithOptions set delegate"];
[m_locManager startMonitoringSignificantLocationChanges];
[self log:#"didFinishLaunchingWithOptions monitoring sig changes"];
return YES;
}
[self log:#"didFinishLaunchingWithOptions"];
return YES;
}
- (void)applicationWillResignActive:(UIApplication *)application {
[self log:#"applicationWillResignActive"];
NSUserDefaults * userDefaults = [NSUserDefaults standardUserDefaults];
[userDefaults setBool:viewController.m_significantSwitch.on forKey:#"significant"];
[userDefaults synchronize];
}
- (void)applicationDidEnterBackground:(UIApplication *)application {
[self log:#"applicationDidEnterBackground"];
[m_locManager startMonitoringSignificantLocationChanges];
}
- (void)applicationWillEnterForeground:(UIApplication *)application {
[self log:#"applicationWillEnterForeground"];
[m_locManager stopMonitoringSignificantLocationChanges];
}
- (void)applicationDidBecomeActive:(UIApplication *)application {
[self log:#"applicationDidBecomeActive"];
if (![window.subviews count])
{
// Add the view controller's view to the window and display.
[window addSubview:viewController.view];
[window makeKeyAndVisible];
NSUserDefaults * userDefaults = [NSUserDefaults standardUserDefaults];
viewController.m_significantSwitch.on = [userDefaults boolForKey:#"significant"];
if (viewController.m_significantSwitch.on)
[viewController actionSignificant:nil];
}
}
- (void)applicationWillTerminate:(UIApplication *)application {
[self log:#"applicationWillTerminate"];
[m_locManager startMonitoringSignificantLocationChanges];
}
That is not correct, when your app is terminated it can still monitor significant location updates.
My friend , you are on wrong way. Actually there is no any way to do a task after killing of app in iOS. You can read about this here in Apple documentation.
Find My iPhone - It is an Apple App and they are using private api's to make this possible. And these type of features not available for general purpose developer programming.
So please don't go on this path.All will go in vain.
Hope this Helps you !
You cannot run anything when the app is killed, except you can recieve push notifications or UILocalNotifications. You could try duplicating UILocalNotifications functionality and do your stuff even when your app is killed/in bg/. BTW this is a complex thing and you could do more digging about ios7 background tasks or something.
This may help you.
Getting the User’s Location
see the section Starting the Significant-Change Location Service. It says
If you leave the significant-change location service running and your iOS app is subsequently suspended or terminated, the service automatically wakes up your app when new location data arrives. At wake-up time, the app is put into the background and you are given a small amount of time (around 10 seconds) to manually restart location services and process the location data.
The build process is fine but then i get a black screen. I tried putting a breakpoint in the app delegate but it doesn't seem to run.
What could it be?
This is my didFinishLaunchingWithOptions method:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
//Init Airship launch options
NSMutableDictionary *takeOffOptions = [[[NSMutableDictionary alloc] init] autorelease];
[takeOffOptions setValue:launchOptions forKey:UAirshipTakeOffOptionsLaunchOptionsKey];
// Create Airship singleton that's used to talk to Urban Airship servers.
// Please populate AirshipConfig.plist with your info from http://go.urbanairship.com
[UAirship takeOff:takeOffOptions];
// Register for notifications
[[UAPush shared] registerForRemoteNotificationTypes:(UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert)];
[[UIApplication sharedApplication] registerForRemoteNotificationTypes:
(UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert)];
usersData = [PlayersData sharedInstance];
//[usersData cleanUserDefauts]; // --- use to clean user defaults
self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
// Override point for customization after application launch.
self.loadingPageVC = [[LoadingPage alloc] initWithNibName:#"LoadingPage" bundle:nil];
self.window.rootViewController = self.loadingPageVC;
[self.window makeKeyAndVisible];
ConnectionManager *connectionManager = [ConnectionManager sharedInstance];
NSLog(#"Connection statement: %#",[connectionManager checkConnection]);
if ([[connectionManager checkConnection] isEqualToString:#"connected with wifi"] || [[connectionManager checkConnection] isEqualToString:#"connected with wwan"] ) {
[connectionManager getLocation];
}
return YES;
}
Sometimes(Very Rarely) XCode can behave different.If something is really weird i would do the following things.
Do a clean build
Remove your app in the Simulator and Build Again
Restart Simulator and Build Again
Close XCode and Reopen it
Worst case is to restart the System
No need to resart anything. Just follow a step given below & you will achieve what you want.
1. Go to /Users/<MAC_NAME>/Library/Application Support/iPhone Simulator/<SIMULATOR_VERSION>, delete all & run app
Enjoy Programming!
I think you may have changed your xib name from ViewController to LoadingPage.
If so, then you must have to delegate it from your .xib. From the top-right corner. Like,
I have just given my opinion that this may be your solution. If you have succeeded with another one, let me know.....:)
Ok! This is solved.
Apparently someone I work with changed one simple word and that messed everything up…
He made the appDelegate inherit from UIApplication instead from UIResponder.
Now it works.
I have studied some of the following questions, that are::
1.) How to set alarm for selected days in iphone?
2.) iPhone alarm using repeated local notifications
3.) How to set the alarm in iPhone and save in local notification?
but they all are using local notifications. I am facing problem with local notification as I have to use three buttons on an Alarm View which are: Snooze, Ignore and Okay. I have to perform custom actions on each button click.
Please help me with this stuff.
Suggestions accepted.
Thanks in advance.
Kuldeep.
In you app delegate...
- (void) presentWidget: (NSString*)theDisplayedText {
BOOL widgetIspresent = [WidgetVC widgetIsCurrentlyPresented];
if (!widgetIspresent) {
WidgetVC *widgetVC = [[WidgetVC alloc] initWithNibName:#"WidgetVC" userInfoString:theDisplayedText bundle:nil];
widgetVC.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
widgetVC.userInfoStr = theDisplayedText;
[mainScreenManager presentViewController:widgetVC animated:YES completion:nil];
}
}
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
UILocalNotification *localNotif = [launchOptions objectForKey:UIApplicationLaunchOptionsLocalNotificationKey];
if (localNotif) {
NSLog(#"Recieved Notification didFinishLaunchingWithOptions %#",localNotif);
NSString *theDisplaytext = [localNotif.userInfo valueForKey:#"someKey"];
//here we have to handle whatever notification was pressed - that might also be an old aready passed one
//this all is checked when the widget opens - it will show if the notification is OK or too old
[self presentWidget: theDisplaytext ];
} else {
//so we started the app normally, not via local notification
[self presentWidget];
}
return YES;
}
// Handle the notificaton when the app is running
- (void)application:(UIApplication *)app didReceiveLocalNotification:(UILocalNotification *)localNotif {
// Handle the notificaton when the app is running
NSLog(#"Recieved Notification didReceiveLocalNotification %#",localNotif);
NSString *theDisplaytext = [localNotif.userInfo valueForKey:#"someKey"];
[self presentWidget: theDisplaytext];
}
You need a way to start the UIViewController for the widget, I just created a mainScreenManager helper.
So on the widgetVC you have your "Snooze" and "OK" while the "Ignore" is just the ignoring of the notification itself.
Hope this gets you on an usable track...
ps I ported my app from Android to iPhone, that's why I used the name "widgetVC" for this screen. On Android it is implemented as a widget. Hope no iPhone lover feels offended :-)
I have just made my app universal by combining separate iPhone and iPad projects. Everything seems to be working but there is one major bug.
When the iPad app launches it just displays a black screen (presumably the window) and status bar. When I press the home button I suddenly see the SplitViewController as it disappears. When I open the app up again the SplitViewController is displayed.
I can't figure out why the controller only displays after I close and reopen the app. Any ideas?
(I don't have any idea what is causing this so if you need code samples from specific places let me know).
Thanks.
Edit:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
[Appirater appLaunched:YES];
// Registers this class as the delegate of the audio session.
[[AVAudioSession sharedInstance] setDelegate: self];
// Allow the app sound to continue to play when the screen is locked.
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];
justOpened = YES;
self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
// Override point for customization after application launch.
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone) {
{deleted}
} else {
[self.window addSubview:self.splitViewController.view];
[self.window makeKeyAndVisible];
CGRect rect = CGRectMake(-2, self.window.frame.size.height-29, self.window.frame.size.width+2, 29);
imgBar = [[UIImageView alloc] initWithFrame:rect];
imgBar.contentMode = UIViewContentModeScaleToFill;
imgBar.image = [UIImage imageNamed:#"wood_btm.png"];
imgBar.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleTopMargin;
self.splitViewController.showsMasterInPortrait = YES;
self.splitViewController.title = #"Exams";
self.splitViewController.splitPosition=280;
}
return YES;
}
Update:
By messing around with the window's background color I discovered that for some reason it was at the top of the view hierarchy. I then made the window's background color clear and I could see the SplitViewController. Strangely I can also interact with it. So essentially I have solved the problem by making the window clear. This is obviously not the ideal solution though so if anyone can think of a cause let me know.
[self.window addSubview:self.splitViewController.view];
[self.window makeKeyAndVisible];
return YES;
should be at the end of -applicationDidFinishLaunching:WithOptions: method.
By messing around with the window's background color I discovered that for some reason it was at the top of the view hierarchy. I then made the window's background color clear and I could see the SplitViewController. Strangely I can also interact with it. So essentially I have solved the problem by making the window clear.
I am working on time based reminder App. in which the user enter his reminder and time for the reminder. The problem is that how to continuously comparing the current time with the user defined time. Any sample code will greatly help. because i am stuck on this point.
Comparing the current time vs. the user defined one is not the right design pattern.
UIKit offers the NSLocalNotification object that is a more high-level abstraction for your task.
Below is a snip of code that create and schedule a local notification at the choosen time:
UILocalNotification *aNotification = [[UILocalNotification alloc] init];
aNotification.fireDate = [NSDate date];
aNotification.timeZone = [NSTimeZone defaultTimeZone];
aNotification.alertBody = #"Notification triggered";
aNotification.alertAction = #"Details";
/* if you wish to pass additional parameters and arguments, you can fill an info dictionary and set it as userInfo property */
//NSDictionary *infoDict = //fill it with a reference to an istance of NSDictionary;
//aNotification.userInfo = infoDict;
[[UIApplication sharedApplication] scheduleLocalNotification:aNotification];
[aNotification release];
Also, be sure to setup your AppDelegate to respond to local notifications, both at startup and during the normal runtime of the app (if you want to be notified even the application is in foreground):
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
UILocalNotification *aNotification = [launchOptions objectForKey: UIApplicationLaunchOptionsLocalNotificationKey];
if (aNotification) {
//if we're here, than we have a local notification. Add the code to display it to the user
}
//...
//your applicationDidFinishLaunchingWithOptions code goes here
//...
[self.window makeKeyAndVisible];
return YES;
}
- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification {
//if we're here, than we have a local notification. Add the code to display it to the user
}
More details at the Apple Developer Documentation.
Why not use NSLocalNotification which you can set for a specified time, much like a calendar event. Alternatively you can add calendar events to the users calendar with EKEventKit
Tutorial for local notifications.
Tutorial for event kit.