listview android中的手势

嗨,我必须添加一个手势到我的列表视图,我想实现联系人应用程序的相同function。 当我离开滑动它应该发送一条消息,右键滑动它应该打电话。 任何人都可以帮助我如何做这些手势检测…我已经在各种其他视图中实现了…但我不能为listView做…我不知道什么去了…我的代码是`

/** Called when the activity is first created. */ public void onCreate(Bundle icicle) { super.onCreate(icicle); setContentView(R.layout.main); // Create an array of Strings, that will be put to our ListActivity String[] names = new String[] { "Linux", "Windows7", "Eclipse", "Suse", "Ubuntu", "Solaris", "Android", "iPhone"}; // Create an ArrayAdapter, that will actually make the Strings above // appear in the ListView this.setListAdapter(new ArrayAdapter(this, R.id.MyList, names)); gestureListener = new ListView.OnTouchListener() { public boolean onTouch(View v, MotionEvent event) { if (gestureDetector.onTouchEvent(event)) { return true; } return false; } }; } @Override protected void onListItemClick(ListView l, View v, int position, long id) { super.onListItemClick(l, v, position, id); // Get the item that was clicked Object o = this.getListAdapter().getItem(position); String keyword = o.toString(); Toast.makeText(this, "You selected: " + keyword, Toast.LENGTH_LONG).show(); } @Override public boolean onTouchEvent(MotionEvent event) { if (gestureDetector.onTouchEvent(event)) return true; else return false; } class MyGestureDetector extends SimpleOnGestureListener { @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { try { if (Math.abs(e1.getY() - e2.getY()) > SWIPE_MAX_OFF_PATH) { return false; // right to left swipe } if (e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) { Context ctx = getApplicationContext(); CharSequence txt = "Right to Left Swipe"; int duration = Toast.LENGTH_LONG; Toast toast = Toast.makeText(ctx, txt, duration); toast.show(); Toast.makeText(this.getItem(lv.pointToPosition((int)e1.getX(),(int) e1.getY()))); // return super.onFling(); } else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) { Context ctx = getApplicationContext(); CharSequence txt = "Left to Right Swipe"; int duration = Toast.LENGTH_LONG; Toast toast = Toast.makeText(ctx, txt, duration); toast.show(); } } catch (Exception e) { // nothing } return false; } } 

基于post[#937313] [1]的答案(感谢gav和paiego),我掀起了下面的代码来识别ListView上的简单手势(水平滑动)。

但是,在执行onItemClick()操作之后,ListView的onItemClick()侦听器也将被调用! 因此,您最终会得到一个fling和一个额外的onItemClick()。 我认为这是因为Android会在每个按钮上发送一个项目点击事件,无论用户移动手指多远。 为了解决这个问题,我提供了自己的方法myOnItemClick() ,而不是注册通常的myOnItemClick() 。 然后我重写SimpleOnGestureListener.onSingleTapUp()方法,这样当手指启动时,此方法将手动调用myOnItemClick()。

到目前为止,这种方法对我来说很好。 没什么好抱怨的 :-)。

 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(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" }; } 

–Edited —如果你是从谷歌来到这里,只是想告诉你虽然这个解决方案仍然有效,但是不推荐使用GestureDetector的特定构造函数。

如果你想在你的Android应用程序上实现滑动手势,你可以考虑使用这个库: https : //github.com/liuzc/android-swipelistview

或者这个(滑动就像gmail一样): https : //github.com/nhaarman/ListViewAnimations