Toast.makeText(context:MainActivity.this, text:"You must", Toast.LENGTH_SHORT).show(); code example
Example 1: java android show toast
Toast myToast = Toast.makeText(this, "I'm a toast!", Toast.LENGTH_LONG);
myToast.show();
Example 2: toast.maketext
Context context = getApplicationContext();
CharSequence text = "Hello toast!";
int duration = Toast.LENGTH_SHORT;
Toast toast = Toast.makeText(context, text, duration);
toast.show();