How to display Toast in Android?

In order to "display Toast" in your application, try this:

Toast.makeText(getActivity(), (String)data.result, 
   Toast.LENGTH_LONG).show();

other example...

Toast.makeText(getActivity(), "this is my Toast message!!! =)",
   Toast.LENGTH_LONG).show();

We can define two constats for duration:

int LENGTH_LONG Show the view or text notification for a long period of time.

int LENGTH_SHORT Show the view or text notification for a short period of time.

Read more about "Toasts"

other option, customizing your toast:

LayoutInflater myInflater=LayoutInflater.from(this);
View view=myInflater.inflate(R.layout.your_custom_layout,null);
Toast mytoast=new Toast(this);
mytoast.setView(view);
mytoast.setDuration(Toast.LENGTH_LONG);
mytoast.show();