可以使用android中的intent-filter来启动一个方法

Question

me and a partner are working on a project and have designed an app that uses nfc, we want it so that when you're off the app you can tap an nfc card and read it as well, the problem is we don't specifically have an activity for reading or writing a card, its triggered using a button on main activity that starts a dialog fragment, starts a class and reads the card

is it possible, using the intent filter (or any other way without having to create an activity for it) trigger a method in the activity? at the moment we just have it to bring you to the main activity but we want to start a method in main activity when that happens.

Answer 1

Intent filters start Activities. Activities always start with onCreate. If you want to call a single function in your activity, your code is mis-architected and that function should be in a common helper class, not in your activity.