Android 0nTouch event problem [Swipe DOWN and UP]

im having an application which needs onTouch swipe events like in Iphone. they are

1. Swipe Up.
2. Swipe Down.
3. Swipe Left.
4. Swipe Right.

i implemented onTouch event as following . and i got Swipe Left and Right actions correctly.but which is the correct way to implement the swipe Down and Up actions.

MYCODE:

    float downXValue,downYValue;

    @Override
    public boolean onTouchEvent(MotionEvent arg1) {

         // Get the action that was done on this touch event
        switch (arg1.getAction())
        {
            case MotionEvent.ACTION_DOWN:
            {
                // store the X value when the user's finge开发者_运维知识库r was pressed down
                downXValue = arg1.getX();
                downYValue = arg1.getY();
                break;
            }

            case MotionEvent.ACTION_UP:
            {
                // Get the X value when the user released his/her finger
                float currentX = arg1.getX();   
                float currentY=arg1.getY();

                // going backwards: pushing stuff to the right
                if (downXValue < currentX)
                {
                    Log.d(DEBUG_TAG, "Right");
                }

                // going forwards: pushing stuff to the left
                if (downXValue > currentX)
                {

                    Log.d(DEBUG_TAG, "Left");
                }
                break;
            }
        }

         //GestureListener is called here... 

        //return gestures.onTouchEvent(event);


        return true;
    }

Thank you.

---

What about...

if (downYValue < currentY)
{
    Log.d(DEBUG_TAG, "Down");
}

Are you sure you wrote the code above?

Edit

OK, I believe you. What you have to do is basically:

double sizeInX = Math.abs(downXValue - currentX);
double sizeInY = Math.abs(downYValue - currentY);
if( sizeInX > sizeInY ){
   // you better swipe horizontally
} else {
   // you better swipe vertically
}

---

This is a listener I wrote some time ago, that handles both up an down swypes. Theres a float oldPosition variable that I used to track the touch position. There is some unneeded code in there but you'll get the idea:

    LinearLayout tableM = (LinearLayout) findViewById (R.id.tableM);
    tableM.setOnTouchListener(new OnTouchListener () {
        public boolean onTouch(View view, MotionEvent event) {
            if (event.getAction() == android.view.MotionEvent.ACTION_DOWN) {
                oldPosition = event.getY();
                return true;
            } else
            if (event.getAction() == android.view.MotionEvent.ACTION_MOVE) {
                if (event.getY() < oldPosition) {
                    tableIndexM++;
                    if (tableIndexM > (minsecs.length - 3)) {
                        tableIndexM = 0;
                    }
                    fillTable (rowM0, rowM1, rowM2, minsecs, tableIndexM);
                }
                else if (event.getY() > oldPosition) {
                    tableIndexM--;
                    if (tableIndexM < 0) {
                        tableIndexM = minsecs.length - 3;
                    }
                    fillTable (rowM0, rowM1, rowM2, minsecs, tableIndexM);
                }
                oldPosition = event.getY();
                return true;
            }
            return false;
        }
    });