Toast message after MotionEvent

Question

I am trying to display the coordinates of a point that a user clicks on the screen using a Toast. its not working in this class for some reasons, can anyone shed some light on why? @Override public boolean onTouchEvent(MotionEvent event) { //motionevent detects motion from the user float x; x = event.getX(); float y; y = event.getY();

      switch (event.getAction())
      {
        case MotionEvent.ACTION_UP:
            //touch_up(x, y);
            invalidate();
            float Cox = event.getX();
            float Coy = event.getY();
            String text = "You clicked at x = " + Cox+ "and y =" + Coy;
            //AlertDialog.Builder builder = new AlertDialog.Builder();
            Toast toast = Toast.makeText(DrawView.this, text, 10);
            toast.show();

            break;
      }
      return true;

What does your invalidate method do? Maybe move that below everything. Also try getRawX and getRawY instead of just getX and getY — MobileMon, Feb 07 '15 at 15:03
thanks for your response however, it didnt answer my questions as to why the toast doesnt work. The invalidate method handles the layout view. — Amna Hussain, Feb 07 '15 at 15:20

score 0 · Answer 1 · answered Feb 07 '15 at 15:23

0

Set a class variable called:

Context mContext;

In onCreate method:

mContext = this;

Pass this mContext variable in Toast constructor instead of DrawView.this

answered Feb 07 '15 at 15:23

MobileMon

8,341
5
56
75

nope, still doesnt work. when i declare mContext=this; it thorws an error for incompatible types – Amna Hussain Feb 07 '15 at 16:28

Toast message after MotionEvent

1 Answers1