make app without of multitasking support

my开发者_开发技巧 application should not support multitasking , is there any to force app without multitasking support ?

Set the UIApplicationExitsOnSuspend key in your Info.plist file.

Just call applicationWillTerminate in your applicationDidEnterBackground method of your application's delegate. Then the home button will have the same effect as it did on iOS versions prior to 4.0, without multitasking.