merging 2 iphone applications

I have 2 iphone app one for just info is now used and uploaded to appstore 开发者_运维技巧 and the other one that i m coding ll be finished by the end of march. and i want to merge these two app. For example when i bush a button in my new iphone app i want to open the old one that is already at the appstore .

One way I know of doing it is using custom URL schemes, i.e. making the app which you want launched by the other app listen to a URL scheme, which you set inside the Info.plist file and then in your app delegate of the target app you need to implement: -(BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url; which is your entry point when the other app opens it.

Look here for more info: http://iosdevelopertips.com/cocoa/launching-your-own-application-via-a-custom-url-scheme.html