Can you set the text based on the application user chooses to share with UIActivityViewController?

问题

So for example, if the user wants to share with twitter, the text would be different than if a user chooses to share with email.

How would I code that with initWithActivityItems?:

UIActivityViewController *activityVC = [[UIActivityViewController alloc] initWithActivityItems:objectsToShare applicationActivities:nil];

回答1:

Instead of objectsToShare, supply an object that adopts the UIActivityItemSource protocol. This protocol means your object will be called with activityViewController:itemForActivityType:. The second parameter that tells you the activity type. Thus you can return a different item, depending on the activity type.

来源：https://stackoverflow.com/questions/40296314/can-you-set-the-text-based-on-the-application-user-chooses-to-share-with-uiactiv