Ringtone input

Extra key: 
android.intent.extra.ringtone.EXISTING_URI
Additional extra keys: 
android.intent.extra.ringtone.SHOW_DEFAULT
android.intent.extra.ringtone.SHOW_SILENT
android.intent.extra.ringtone.TYPE
android.intent.extra.ringtone.DEFAULT_URI
android.intent.extra.ringtone.TITLE
android.intent.extra.ringtone.INCLUDE_DRM

Ringtone extras for input.

See Android documentation.