Register to be default app for custom file type

Question

Register to be able to open files of custom type. Say i have .cool files, and if the user tries to open it, Android asks if they would like to open it with my application. H

Answer 1

You can add the following to the AndroidManifest.xml file inside the activity that has to open the file (pdf in our case)

Make sure you specify the proper mime format. The user will be prompted to choose your app if she wants to open the "pdf" file.

Check also Android intent filter: associate app with file extension for more details.