Toast Class

Toast Temp= Toast.makeText(getApplicationContext(), "출력할 내용", Toast. LENGTH_SHORT);

Temp.show();

1번째  : Context

2번째  : 출력 내용

3번째  : 보여지는 시간

Toast.LENGTH_LONG : 토스트를 길게 보여주고 싶을 때 사용

Toast.LENGTH_SHORT : 토스트를 짧게 보여주고 싶을 때 사용

추가적인것들

Public methods
void	cancel() Close the view if it's showing, or don't show it if it isn't showing yet.
int	getDuration() Return the duration.
int	getGravity() Get the location at which the notification should appear on the screen.
float	getHorizontalMargin() Return the horizontal margin.
float	getVerticalMargin() Return the vertical margin.
View	getView() Return the view.
int	getXOffset() Return the X offset in pixels to apply to the gravity's location.
int	getYOffset() Return the Y offset in pixels to apply to the gravity's location.
static Toast	makeText(Context context, int resId, int duration) Make a standard toast that just contains a text view with the text from a resource.
static Toast	makeText(Context context, CharSequence text, int duration) Make a standard toast that just contains a text view.
void	setDuration(int duration) Set how long to show the view for.
void	setGravity(int gravity, int xOffset, int yOffset) Set the location at which the notification should appear on the screen.
void	setMargin(float horizontalMargin, float verticalMargin) Set the margins of the view.
void	setText(int resId) Update the text in a Toast that was previously created using one of the makeText() methods.
void	setText(CharSequence s) Update the text in a Toast that was previously created using one of the makeText() methods.
void	setView(View view) Set the view to show.
void	show() Show the view for the specified duration.