Disable/Enable mobile data on Android L with root access

Question

I am writing a little app that only I will use and I want to pragmatically enable / disable my mobile data on a rooted android 4.5 device (I am running a custom Android L fo

Answer 1

Use this

TelephonyManager tm = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
Method methodSet = tm.class.getDeclaredMethod( "setDataEnabled", boolean.class);
methodSet.invoke(tm, true); 

Edit: This requires permission MODIFY_PHONE_STATE, this is System or signature level permission.

Ideally you could create a runnable jar file with this code and execute it using

export CLASSPATH=
exec app_process  your.package.name.classname "$@"

from su shell.