multitasking

iOS 4 app flickers and crashes when returning from background mode

I just converted an iPhone OS 3 app to iOS 4, and once in a while, the screen will flicker and then turn black when the app returns from background mode. Has anyone else experienced this? I finally resorted to terminating the app before it enters background mode. This is definitely a temporary band aid: - (void)applicationDidEnterBackg...

Launching my app causes iPod music to stop

Hi, I'm compiling using iOS4. When I launch my application that uses UIImagePickerController and iAds the iPod music halts and doesn't continue in the background? Any settings I have to add to my app? Thanks ...

How can I determine if multitasking is supported on a device?

I updated to the latest iOS 4 SDK, and updated my iPod touch to the latest OS fine. I built my application against 4.0, and it appears to use the multitasking functionality fine. However, when I run my application on my iPod touch, it does not appear to use multitasking. How can I detect whether multitasking is supported on a device...

How to support Multitasking (fast app switching) with 3.2 SDK

I'm building an app which is a universal iPhone/iPad app. I'd like to support fast app switching (multitasking) with iOS 4.0 SDK (eg: on iPhone 3GS with iOS 4.0). However, when I set the app to build targeted to iPhone OS 4.0, it will not launch on the iPad (which currently latest software version is 3.2.1) So it appears that the versio...

Why does not multitasking auriotouch sample code?

Hi 1. I want to play background this samplcode app. But auriotouch isn't multitasking in iphone. So I tried to find materials. However i didn't try to find materials. I want to know how multitasking code. 2. I tested auriotouch sample code in iphone device. However After this app play,click a home button and other app played. A...

iPhone OS 4.x - background TCP sockets are not responding

I'm trying to implement the background mode for VoIP application using the new mechanisms provided by iPhone OS 4.x Still without success... Application remains silent in the background mode when some data arrives from the server via TCP socket. According to the documentation the following two things have to be done: Add "voip" value...

Save the application state when it has been deleted from the background

Hi all, I am using following functions in my App delegate - (void)applicationWillResignActive:(UIApplication *)application { NSLog(@"applicationWillResignActive"); } - (void)applicationDidEnterBackground:(UIApplication *)application { NSLog(@"applicationDidEnterBackground"); } - (void)applicationWillEnterForeground:(UIA...

iPhone OS 4.0.x - blocking I/O operations in background

I'm currently implementing some logic for reading from TCP socket in the background mode. CFReadStreamRead function is being used to fetch some data from socket and for now everything works fine. But I'm wondering how iPhone OS 4.x treats blocking I/O operations in the background mode. For example: CFReadStreamRead function may block f...

Android ==> disable multi tasking ??

1- How can i disable multi tasking? My application is a socket based game, every time i start the app, it MUST load the main page first to start the socket connection? I do not want the user to be able to run my application in background. Is this possible to do? 2- I do not want the user to be able to use the back button, to navigate b...

How can I replace iPod with my app icon while my app is playing audio in background?

I (and you) know how to play audio in background. But my question is like that, some music play apps replace iPod icon which is shown on the first background app page with their icon while they are playing audio in background. How can I do that? ...

Detect Application States

Hello, I want to detect application states and send it to the server. In the new OS4, with multitasking there are some methods available to help detecting the states: application:didFinishLaunchingWithOptions: applicationDidBecomeActive: applicationWillResignActive: applicationDidEnterBackground: applicationWillEnterForeground: appli...

iOS 4 resume from background

Hello guys! It is possible to get a notification or something when the user opens the application, but the application was in the background (so it wasn't closed)? ...

How to tell when controller has resumed from background?

Hey guys, So I want to support app switching in my upcoming iPhone app and I've implemented all the proper delegate methods in my application delegate. So when the user resumes the application, I can see their activity in the NSLog and all. However, how can I tell my app has resumed a controller? Is there a method I can put in my contro...

How can I check the data usage by an app with iPhone sdk in OS4?

Thanks in advance ...

WaitFor implementation for Cortex M3

Hello. I'm using stm32f103 with GCC and have a task, which can be described with following pseudocode: void http_server() { transmit(data, len); event = waitfor(data_sent_event | disconnect_event | send_timeout_event); } void tcp_interrupt() { if (int_reg & DATA_SENT) { emit(data_send_event); } } void main.c() { run_task...

Best Practice - iPhone Background Application Mode

I'm currently testing the latest iOS4 Feature to put my location aware app in the background. Well, it does work! But on the other hand it's quite hart to handle the immense power usage. The app consumed about 50% battery power in the last four hours. It read the entire official documentation by Apple on this topic but I'm still not su...

iPhone UIApplicationExitsOnSuspend ineffective

UIApplicationExitsOnSuspend does not force my app to exit. I have cleaned the target, removed the app, rebuilt, and reinstalled many times. I really need my app to exit. ...

How to set Application's properties to listen for Telephony events?

I have plans to develop an application through which can make a call and then do some specific activities when an incoming call arrives or when a number is dialed or when a connection is established, or terminated. This can be done by using CTCallCenter as it claimed in the developer's site. But I think that when all these events occu...

Close other multitasking apps with our application with code - iPhone

I want to close other application running background with my app how can i do it? ...

Multitasking with iPhone 3G??

Hi All, I'm a bit confused about multitasking. I have a timer app which I am updating for OS4. Previously you had to keep the app running for the timer to sound, I have now modified it using a LocalNotification so that is the user exits the app then they get an alert when the alarm fires. I've tested this on an iPhone 4 and all is good, ...