how to detect if user has an app in Cocoa

Question

How can I detect if user has an app, like echofon or twitter for mac or if user has pages, or textmate? Any suggestions?

Answer 1

Use NSWorkspace's fullPathForApplication: to get an application's bundle path. If that method returns nil, the app is not installed. For example:

NSString *path = [[NSWorkspace sharedWorkspace] fullPathForApplication:@"Twitter"];

BOOL isTwitterInstalled = (nil != path);

URLForApplicationWithBundleIdentifier is another method you may use.