How does android compare pending intents

Question

Documentation for PendingIntent.FLAG_NO_CREATE reads:

Flag indicating that if the described PendingIntent does not already exist, then simply return n

Answer 1

To determine if 2 PendingIntents match, the following must be equal:

• The requestCode parameter used when the PendingIntent was created
• The Intent ACTION
• The Intent CATEGORIES
• The Intent DATA
• The Intent MIMETYPE
• The Intent PACKAGE
• The Intent COMPONENT

Extras are not taken into consideration.

You can read more in the PendingIntent summary documentation and Intent.filterEquals().