获取选定的项目时，双击列表视图项 [英] Get selected item when double click on listview item

问题描述

下面是code，显示列表视图项和的onclick监听行动。

Here is the code to display listview items and onclick listener action.

ListView list = (ListView) findViewById(R.id.list);
        ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
                this, R.array.list,
                android.R.layout.simple_list_item_1);
        list.setAdapter(adapter);
        list.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> l, View v, int position,
                    long id) {
                String sel = (String) adapterView
                            .getItemAtPosition(position);
                Toast.makeText(MyExample.this, "Your selection: " + sel, Toast.LENGTH_SHORT).show();
                if (sel.equals("Photos"){
                    startActivity(new Intent(MyExample.this, Photos.class));
                }   
            }

        });

现在，我需要实现选择列表项只在双抽头。我试图用GestureDetector如下：

Now, I need to implement to select the list-item only on double-tapped. I tried to use GestureDetector as follows:

GestureDetector gestureDectector = new GestureDetector(this, new GestureListener());        
list.setOnTouchListener(new OnTouchListener() {

            @Override
            public boolean onTouch(View v, MotionEvent event) {
                gestureDectector.onTouchEvent(event);
                return true;
            }
        });



public class GestureListener extends GestureDetector.SimpleOnGestureListener {

    public boolean onDown(MotionEvent e) {
        return true;
    }

    public boolean onDoubleTap(MotionEvent e) {
        Log.d("Double_Tap", "Yes, Clicked");
        return true;
    }
}

但我不知道如何在GestureDetector实现所选择的项目像ItemClickListener并开始根据所选择的列表项其他活动。

But I don't know how to get the selected item in GestureDetector implementation like in ItemClickListener and start another activity based on the selected list-item.

请人帮我。

推荐答案

使用在 onDoubleTap pointToPosition 方法$ C>方法：

Use the pointToPosition method of the listview in your onDoubleTap method:

int position = list.pointToPosition(e.getX(), e.getY());

这篇关于获取选定的项目时，双击列表视图项的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！