I am developing a iPhone application and would need to track the home button pressed event by user while the app is in background mode.I have go through the apple documentation/apis but could not find out any to track.
It would be great if anyone can help me on this to track the iPhone home button pressed event.
Your application can't catch any events while in the background. There are some special cases which allows your app to do some tasks in the background, but even them wouldn't allow you to listen to Home button interaction.
You cann't track the home button pressed or not but as your situation is to see if application went in background or not. for this there is a method applicationDidEnterBackground:(UIApplication *)application. This method is called as the application enters into background.
- (void)applicationDidEnterBackground:(UIApplication *)application
{
NSLog(#"Application Entered Into Background.");
}
Related
My application plays a background music when it launches. It stops when I quit the application. But not playing the music again when I open my application. The application has 2 views and I want to play background sound on only main view. So when the app launches it should play the sound until user quit the app or when the user goes to the second view in the app. The sound should be played again only when the user returns to the main view. Currently, I am calling the sub function which plays the sound in 'viewDidLoad' function. please help.
Thanks
Try using this method in your AppDelegate:
- (void)applicationDidBecomeActive:(UIApplication *)application
DidBecomeActive Apple Documentation
I have Implemented Ray wenderlich's these
http://www.raywenderlich.com/3443/apple-push-notification-services-tutorial-part-12
http://www.raywenderlich.com/3525/apple-push-notification-services-tutorial-part-2
awesome tutorials on APNS. Every thing is working fine, now what i want is that in case application is not running and notification arrives and displays on device now if user presses the launch button i want to display a particular screen other than home screen (i have tab bar application with splash screen displays first for 5 seconds then home screen displays which is on zero index), means i want to display a screen which is on third index, plz. guide me in this, is there a way to do this? and how thanx and regards... Saad
If you have different flows for when the app is active & for when the app is not active (reg. notifications) you can do it like so -
- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
{
if(application.applicationState == UIApplicationStateActive)
{
// app active.
}
else
{
// app not active
self.tabController.selectedIndex = 3;
}
}
My application is a coupon shopping,users will download the coupons in phone and when completed they will be directed for the automatic cash payment.
If a user downloads 5 coupons and inbetween gets a call as it is iOS4 it goes to background.
So when we press the home button also the application goes to background by this behaviour.I have save few data and restore the coupons when the user quits the application by homebutton.
But in iOS 4 behaviour homebutton press and phone call interruptions shows the same behaviour and calls the same functions,how i could differentiate between the 2.
Please this is a tedious function,please help me.......
Without multi-tasking: For applications that do not support background execution or are linked against iOS 3.x or earlier, applicationWillTerminate: method is always called when the user quits the application. For applications that support background execution, this method is generally not called when the user quits the application because the application simply moves to the background in that case.
With multi-tasking: You can implement applicationWillResignActive:delegate method in your app delegate, which gets called during temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
- (void)applicationWillResignActive:(UIApplication *)application {
flag = YES;
[self doCleanUp];
}
- (void)applicationWillTerminate:(UIApplication *)application {
if (!flag) [self doCleanUp];
}
iOS will not tell an app what caused an interruption such as a phone call, an SMS message, or a press of the home button. This is a deliberate design decision by Apple. Apple expects apps to be designed to exhibit the same behavior no matter what caused the interruption.
I have an iPhone application which I'm working on and so far i have created a login page for the application such that only the phone's user can access the application. The login works fine and the application works fine, but when i hit the home button, the app is "minimized". And if accessed again from the task switcher it doesn't prompt for a password.
What exactly would be the best way to go about getting the app to request a password. If it helps i use navigation controllers and i have one view dedicated for the login.
Thanks for the help.
Can't you check app activated in the appdelegate?
- (void)applicationDidBecomeActive:(UIApplication *)application {
[self showLoginWindow];
}
You must be working on iOS4. When you hit on Home Button, your app goes into background mode, but still working. So next time, when you open it, it starts exactly from where you left it. Implement the
- (void)applicationDidBecomeActive:(UIApplication *)application
method, to check for login again. Or if you don't want the background processing at all, disable it or use following code
- (void)applicationDidEnterBackground:(UIApplication *)application {
exit(0);
}
EDIT -
Don't go for exit(0) approach, simply disable the background processing if you don't want it from info.plist file.
see this link
you need to prevent the app to load from background.
I am basically trying to make the device play a sound whenever the app exits (even if the phone is being turned off, the sound would play while the button is being held down). Is this possible?
You could try the - (void)applicationWillResignActive:(UIApplication *)application UIApplicationDelegate method.
Alternately, you could listen for the UIApplicationWillResignActiveNotification notification.