If I understand you correctly, you want a way to dial a number without the user having any say in the matter, i.e. automatically? If so, then I hope this is never implemented.
There have already been cases of dodgy app creators generating shed-loads of money by sending to/dialing high premium lines without the user knowing.
If this is not what you mean, then please clarify what it is you are hoping to achieve.
If your vision so exceeds your ability, then look to something closer.