如何处理列表视图项上的长点击?-HowtohandlelongtaponListViewitem?

26  

It's hard to know what you need to achieve. But my guess is that you want to perform some acion over the item that receives the long click. For that, you have two options:

很难知道你需要实现什么。但我的猜测是，您希望对接收长单击的项执行一些acion。为此，你有两个选择:

• add an AdapterView.OnItemLongClickListener. See setOnItemLongClickListener.
• 添加一个AdapterView.OnItemLongClickListener。看到setOnItemLongClickListener。

.

。

listView.setOnItemLongClickListener (new OnItemLongClickListener() {
  public boolean onItemLongClick(AdapterView parent, View view, int position, long id) {
    //do your stuff here
  }
});

• if you are creating a custom adapter, add a View.OnLongClickListener when creating the View in the method Adapter#getView(...)
• 如果您正在创建一个自定义适配器，请添加一个视图。在方法适配器#getView(…)中创建视图时的OnLongClickListener

14  

Normally, you'd associate a long click on a list view with a context menu, which you can do by registering the listView with Activity.registerForContextMenu(View view) to give a more consistent user interface experience with other android apps.

通常，您会将列表视图上的长单击与上下文菜单相关联，这可以通过将listView注册为Activity来实现。registerForContextMenu(视图视图)，以提供与其他android应用程序更一致的用户界面体验。

and then override the onContextItemSelected method in your app like this:

然后重写app中的oncontext titemselected方法如下:

@Override
public void onCreate(Bundle savedInstanceState) {
    listView = (ListView) findViewById(R.id.your_list_view);
    registerForContextMenu(listView);
}

@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
    super.onCreateContextMenu(menu, v, menuInfo);
    menu.setHeaderTitle(getString(R.string.menu_context_title));
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.your_context_menu, menu);
}

@Override
public boolean onContextItemSelected(MenuItem item) {
    AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();

    switch (item.getItemId()) {
    case R.id.some_item:
        // do something useful
        return true;
    default:
        return super.onContextItemSelected(item);
    }

The position in the list is also held in info.id

列表中的位置也在info.id中

If you just want to capture the long click event, then I think what Snicolas is suggesting would work.

如果你只是想捕捉长点击事件，那么我认为Snicolas所提出的建议是可行的。

0  

Add a custom View.OnLongClickListener to your views. It can be shared by many instances, then you can use the parameter of

添加一个自定义视图。OnLongClickListener你的观点。它可以被许多实例共享，然后您可以使用参数of

onLongClick(View v)

to know which view has been clicked and react accordingly.

知道已单击哪个视图并相应地作出反应。

Regards, Stéphane

问候,史蒂芬

0  

//Deleted individual cart items
    //on list view cell long press
    cartItemList.setOnItemLongClickListener (new OnItemLongClickListener() {
          @SuppressWarnings("rawtypes")
        public boolean onItemLongClick(AdapterView parent, View view, final int position, long id) {
              final CharSequence[] items = { "Delete" };

                AlertDialog.Builder builder = new AlertDialog.Builder(context);

                builder.setTitle("Action:");
                builder.setItems(items, new DialogInterface.OnClickListener() {

                    public void onClick(DialogInterface dialog, int item) {
                        cart = cartList.get(position);
                        db.removeProductFromCart(context, cart);

                        new AlertDialog.Builder(context)
                        .setTitle(getString(R.string.success))
                        .setMessage(getString(R.string.item_removed))
                        .setPositiveButton("Done", new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int which) { 
                                Intent intent = new Intent(CartDetailsActivity.this, HomeScreen.class);
                                startActivity(intent);
                            }
                         })
                         .show();

                    }

                });

                AlertDialog alert = builder.create();

                alert.show();
            //do your stuff here
              return false;
          }
        });