Black screen on iphone 4 How can I fix it?

I have dropped my iphone 4 many times, with and without a case on it. The screen is cracked just about everywhere except for the part that is actually a screen (the black glass around the clear screen is cracked all over.) i dropped it like 2 feet onto carpet and ironically that broke my screen. Basically my screen is just black, it still works, like i can unlock it, and I can call people back who called me if i swipe the right spot. It still vibrates and rings and everything, in fact my alarm goes off every monday-friday morning which is going to be really annoying cause i get off school in 3 days. Also just some details, when i hit my home button my screen turns an obvious different shade of black, so i know its on, and when i hit the lock button, it goes back to the obviously darker black. And another thing is when i like press hard and the screen is on, i see gray-white discoloration where my fingers are pressing. I'm wondering if there's any ways or sugestion on how to fix this, thanks.

Buy a new screen. I work in a phone shop and we charge £35 fitted for a new screen and top glass.

There's no way you'll fix your current one.