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

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

Another example:

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

We can define two constants 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.

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();

Extending activity using baseadapter used this

Toast.makeText(getActivity(),     "Your Message", Toast.LENGTH_LONG).show();

or if you are using activity or mainactivity

Toast.makeText(MainActivity.this,     "Your Message", Toast.LENGTH_LONG).show();

Syntax

Toast.makeText(context, text, duration);

Parameter Value

context

getApplicationContext() - Returns the context for all activities running in application.

getBaseContext() - If you want to access Context from another context within application you can access.

getContext() - Returns the context view only current running activity.

text

text - Return "STRING" , If not string you can use type cast.

 (string)num   // type caste

duration

Toast.LENGTH_SHORT - Toast delay 2000 ms predefined

Toast.LENGTH_LONG - Toast delay 3500 ms predefined

milisecond - Toast delay user defined miliseconds (eg. 4000)

Example.1

Toast.makeText(getApplicationContext(), "STRING MESSAGE", Toast.LENGTH_LONG).show();

Example.2

Toast.makeText(getApplicationContext(), "STRING MESSAGE", 5000).show();