Build and reuse android open source Dialer source code in my project

Question

I have to integrate android opensource Dialer source code into my application and also need to do customizations on the same.

1. Currently I cloned the Dialer source

Answer 1

I know this is old but this is for future reference.

You cannot build the Dialer application without access to the rest of the source code. You need to first download the whole Android source (AOSP) and then build it because the Dialer application that comes with AOSP requires some framework files which is included in AOSP; hence the Dialer code may not actually work on all devices. Your best bet is using a tutorial to build a dialer application from scratch.