Jump button for android

Hello, i´ve managed to make a very simple game with unity, now im trying to make it for android.
I´ve got 3 buttons i want to use ( left, jump, right ) but is there a way to make a button act like a key?
for example, if i press the button on android, unity thinks i’ve pressed the space bar. and so makes my character jump.

Thanks in advance,
Timo Leinders

Actually, you don’t want a button to emulate a keypress. Instead, you want your button to call your jump method. Since Unity 4.6 you can use the built in OnClick part of a UI Button component to do so. Look at the UI tutorials for Buttons and then structure your code in a way, that you can call a jump method.