I am trying to create a floating action button in android and want to add actions to those small sub buttons to start new activity by clicking them. I successfully managed to create those sub buttons but cannot assign action to them to start new activity.
I'm not sure i have understand what you want to do.. but seems you want simple open a new activity onClick.. so you can do in this way:
Button floatingBtn = (Button)findViewById(R.id.fab);
floatingBtn.setOnClickListener = new(view.onClickListener()
{
Intent i = new Intent(this, Activity.class);
startActivity(i);
});
Remember to insert the new activity in the manifest