So I have done some research, and after defining you button as an object by the code
private Button buttonname;
buttonname = (Button) findViewById(R.id.butto
Start your OnClickListener, but when you get to the first set up parenthesis, type new, then View, and press enter. Should look like this when you're done:
Button btn1 = (Button)findViewById(R.id.button1);
btn1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//your stuff here.
}
});