Fingerpicker

• My first Android App (created as part of a course of my studies together with a fellow student)

• This is a really simple FingerPicker app with which you can randomly select a person from a group of people.

• For a more refinded FingerPicker/Chooser application, see the corresponding repository of @UrAvgCod

Approach

• Main logic of the app almost entirely in the FingerPicker view class

• onTouchEvent() method to react to fingers touching the screen and store finger position and circle in HashMap

  public boolean onTouchEvent(MotionEvent event) {
    
      int pointerIndex = event.getActionIndex();
      int pointerId =v event.getPointerId(pointerIndex);
  
      switch (event.getActionMasked()) {
              case MotionEvent.ACTION_DOWN:
              case MotionEvent.ACTION_POINTER_DOWN:
  
        //…
  
        case MotionEvent.ACTION_MOVE:
  
        //…
  
        case MotionEvent.ACTION_UP:
        case MotionEvent.ACTION_POINTER_UP:
    
        //…
  

• onDraw() method which draws all circles stored in the HashMap

• selectWinner() method that selects the winning circle