How to get app name of default dialler running on my phone.

[sumithemmadi]

I have created a bash script which reads notifications with command termux-notification-list i used while loop to read continuously.
So when I recieve a call this script will read the notification of default dialler app and search for the phone number with my npm package truecallerjs and sends a notification with the name of the person who holds that number.
see the below screenshot

so, Im using mi phone which has com.android.incallui as a default dialler app . see this below link, my script send phone number details when there is a notification from com.android.incallui .
https://github.com/sumithemmadi/truecaller-on-termux/blob/main/run#L52
the script will work only if the user is using mi phone for other phones there will be different dialer app.

So how can I get default dialler app
See i have used

 ...
   if [[ $packageName == "com.android.incallui"  ]]
   then
...

It should be like

 ...
   if [[ $packageName == "[Default dialer app name]"  ]]
   then
...

What ever the default dialer user use , [Default dialer app name] should be the name of the app which will receive calls.
If the user uses the google dialer it should be

 ...
   if [[ $packageName == "com.google.android.dialer"  ]]
   then
...

[agnostic-apollo]

For android >= 10, grant termux DUMP permission with adb shell pm grant com.termux android.permission.DUMP and then run /system/bin/dumpsys role | grep -A 1 android.app.role.DIALER | grep holders= | sed -E 's/[ \t]+holders=(.*)/\1/'

You may get an array if more than one app assigned the role.

For android < 10 you can run cmd package resolve-activity tel://123456 with adb or root.

https://android.stackexchange.com/questions/227155/retrieve-list-of-default-apps-via-adb

https://cs.android.com/android/platform/superproject/+/android-12.0.0_r32:packages/modules/Permission/service/java/com/android/role/RoleService.java;l=735

https://cs.android.com/android/platform/superproject/+/android-12.0.0_r32:packages/modules/Permission/service/java/com/android/role/RoleUserState.java;l=384;bpv=0;bpt=1

You can get android version with /system/bin/getprop ro.build.version.sdk.

[sumithemmadi]

Thanks @agnostic-apollo 🥰,
Your answer is helpful but is there any alternate way to do that without granting android.permission.DUMP

[agnostic-apollo]

You are welcome.