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copied!<p>Set a touch listener on the view and compare the x and y spots</p> <p><a href="http://developer.android.com/reference/android/view/View.html#onTouchEvent(android.view.MotionEvent" rel="nofollow">http://developer.android.com/reference/android/view/View.html#onTouchEvent(android.view.MotionEvent</a>)</p> <p>Record when the starting positon where the user touches down</p> <p><a href="http://developer.android.com/reference/android/view/MotionEvent.html#ACTION_DOWN" rel="nofollow">http://developer.android.com/reference/android/view/MotionEvent.html#ACTION_DOWN</a></p> <p>and then track the offset.</p> <p>here is some view listener code I wrote for another question:</p> <pre><code>float initialX = 0; float initialY = 0; int currentFocusedChild = 0; List<View> children; public void walkElements() { final LinearLayout mainLayout = (LinearLayout) findViewById(R.id.main_layout); children = mainLayout.getFocusables(View.FOCUS_FORWARD); mainLayout.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(View v, MotionEvent event) { switch(event.getAction()) { case MotionEvent.ACTION_DOWN: initialX = event.getX(); initialY = event.getY(); break; case MotionEvent.ACTION_MOVE: float diffX = event.getX() - initialX; float diffY = event.getY() - initialY; if(diffY > 0) { if (currentFocusedChild < children.size() - 1) { currentFocusedChild++; } } else { if (currentFocusedChild > 0) { currentFocusedChild--; } } children.get(currentFocusedChild).setSelected(true); //Sleep for a period of time so the selection is slow enough for the user. Thread.sleep(300); break; case MotionEvent.ACTION_UP: children.get(currentFocusedChild).performClick(); break; } return false; } }); } </code></pre>

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