Modifying existing built-in phone application

Question

Instead of building my own custom telephony application by making use of the TelephonyManager class, is it possible to modify the built-in native phone application on a Google Nexus 4 or 5 device to make it do what I want?

There are thousands of Android devices, containing dozens, perhaps hundreds, of implementations of a "built-in native phone application". Most of those are proprietary, not open source. — CommonsWare, Dec 19 '13 at 18:14
Thanks... you say 'most'- what about any of the Google Nexus phones? Modified question to be more specific, please don't down vote! — user2005121, Dec 19 '13 at 18:18

score 0 · Accepted Answer · edited May 23 '17 at 10:26

0

You can get the source code for the system apps (for example, the Dialer app is at https://android.googlesource.com/platform/packages/apps/Dialer/) and then modify it or use it as an example.

http://source.android.com/source/building.html might be useful to set up your dev environment to get the code.

Also, see Download and modify android core apps in eclipse

edited May 23 '17 at 10:26

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answered Dec 19 '13 at 18:27

E-Riz

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Modifying existing built-in phone application

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