How to detect the first launch of the application after updating from the application store, iphone

Question

I need to do something only after updating the application from the AppStore. I do this using NSUserDefaults, but this is not good for me because it only works after the first update.

help

thanks

Answer 1

You can compare the current version with the old version as follows:

[NSString stringWithFormat:@"Version %@",[[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleShortVersionString"]]; 

And with an if statement for the current version you know is 1.1, 2.0 .... etc, you can handle it.

Answer 2

The MTMigration project (MIT license) does exactly what you want:

Manages blocks of code that need to be executed only once when upgrading the version in iOS applications. This can be anything from data normalization procedures, “What's New in This Release”, or bug fixes.

Usage example:

 [MTMigration migrateToVersion:@"0.9" block:^{ // Some 0.9 stuff }]; [MTMigration migrateToVersion:@"1.0" block:^{ // Some 1.0 stuff }]; 

Answer 3

 if ([[NSString stringWithFormat:@"Version %@",[[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleShortVersionString"]]isEqualToString:@"Version 1.0"]) { // run your code here }