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copied!<p>Based on answers from post [#937313][1] (thanks go to gav and paiego), I whipped up the following code to recognize simple gestures (horizontal swipes) on ListView. </p> <p>However, after a fling operation, the ListView's <code>onItemClick()</code> listener will be called too! Therefore, you end up with a fling and an extra onItemClick(). I think this is because Android sends an item-click event on every button-up, no matter how far way the user has moved his finger. To remedy this, instead of registering a usual <code>OnItemClickListener()</code>, I provided my own method <code>myOnItemClick()</code>. Then I override the <code>SimpleOnGestureListener.onSingleTapUp()</code> method, so that when the finger is up, this method will call myOnItemClick() manually. </p> <p>So far this method works fine for me. No complaints :-).</p> <pre><code>public class PracticeActivity extends ListActivity { private int REL_SWIPE_MIN_DISTANCE; private int REL_SWIPE_MAX_OFF_PATH; private int REL_SWIPE_THRESHOLD_VELOCITY; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // As paiego pointed out, it's better to use density-aware measurements. DisplayMetrics dm = getResources().getDisplayMetrics(); REL_SWIPE_MIN_DISTANCE = (int)(120.0f * dm.densityDpi / 160.0f + 0.5); REL_SWIPE_MAX_OFF_PATH = (int)(250.0f * dm.densityDpi / 160.0f + 0.5); REL_SWIPE_THRESHOLD_VELOCITY = (int)(200.0f * dm.densityDpi / 160.0f + 0.5); ListView lv = getListView(); lv.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, m_Starbucks)); final GestureDetector gestureDetector = new GestureDetector(new MyGestureDetector()); View.OnTouchListener gestureListener = new View.OnTouchListener() { public boolean onTouch(View v, MotionEvent event) { return gestureDetector.onTouchEvent(event); }}; lv.setOnTouchListener(gestureListener); // Long-click still works in the usual way. lv.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() { public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) { String str = MessageFormat.format("Item long clicked = {0,number}", position); Toast.makeText(PracticeActivity.this, str, Toast.LENGTH_SHORT).show(); return true; } }); } // Do not use LitView.setOnItemClickListener(). Instead, I override // SimpleOnGestureListener.onSingleTapUp() method, and it will call to this method when // it detects a tap-up event. private void myOnItemClick(int position) { String str = MessageFormat.format("Item clicked = {0,number}", position); Toast.makeText(this, str, Toast.LENGTH_SHORT).show(); } private void onLTRFling() { Toast.makeText(this, "Left-to-right fling", Toast.LENGTH_SHORT).show(); } private void onRTLFling() { Toast.makeText(this, "Right-to-left fling", Toast.LENGTH_SHORT).show(); } class MyGestureDetector extends SimpleOnGestureListener{ // Detect a single-click and call my own handler. @Override public boolean onSingleTapUp(MotionEvent e) { ListView lv = getListView(); int pos = lv.pointToPosition((int)e.getX(), (int)e.getY()); myOnItemClick(pos); return false; } @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { if (Math.abs(e1.getY() - e2.getY()) > REL_SWIPE_MAX_OFF_PATH) return false; if(e1.getX() - e2.getX() > REL_SWIPE_MIN_DISTANCE && Math.abs(velocityX) > REL_SWIPE_THRESHOLD_VELOCITY) { onRTLFling(); } else if (e2.getX() - e1.getX() > REL_SWIPE_MIN_DISTANCE && Math.abs(velocityX) > REL_SWIPE_THRESHOLD_VELOCITY) { onLTRFling(); } return false; } } private static final String[] m_Starbucks = { "Latte", "Cappuccino", "Caramel Macchiato", "Americano", "Mocha", "White Mocha", "Mocha Valencia", "Cinnamon Spice Mocha", "Toffee Nut Latte", "Espresso", "Espresso Macchiato", "Espresso Con Panna" }; } </code></pre>

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