android - how to find the name of the main activity of an application?

Question

For example, I want to start Gmail in code/command line, but I don't know its main activity name.

am start -n com.google.android.gm/.XXXXX

It's available through decompiling the apk, but it's difficult.

Answer 1

This can be found in the application's manifest.

The main activity is the activity with the intent-filter whose name is android.intent.action.MAIN.