学步园

MainActivity如下:

package cc.testpointtoposition;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.app.Activity;
/**
 * Demo描述:
 * ListView中pointToPosition()方法使用示例.
 * 依据触摸点的坐标计算出点击的是ListView的哪个Item
 * 
 * 参考资料:
 * http://blog.csdn.net/guolin_blog/article/details/17357967
 * Thank you very much
 */
public class MainActivity extends Activity {
    private ListView mListView;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		init();
		listenListViewTouch();
	}
	
	private void init(){
		mListView=(ListView) findViewById(R.id.listView);
        List<HashMap<String, Object>> list=new ArrayList<HashMap<String,Object>>();
      	HashMap<String, Object> hashMap=null;
      	for (int i = 0; i < 8; i++) {
      		hashMap=new HashMap<String, Object>();
      		hashMap.put("name", "小明"+i);
          	hashMap.put("phone", "135"+i);
          	hashMap.put("amount","500"+i);
        	list.add(hashMap);
		}
      SimpleAdapter adapter=new SimpleAdapter(this, list, R.layout.listviewitem, 
      new String []{"name","phone","amount"}, new int[]{R.id.name,R.id.phone,R.id.amount});
      mListView.setAdapter(adapter);
	}
	
	private void listenListViewTouch(){
		 mListView.setOnTouchListener(new OnTouchListener() {
			@Override
			public boolean onTouch(View v, MotionEvent event) {
				int item=mListView.pointToPosition((int) event.getX(), (int) event.getY());
				System.out.println("---> 现在点击了ListView中第"+(item+1)+"个Item");
				return true;
			}
		});
	}

}

main.xml如下:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <TextView
        android:id="@+id/textView"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:gravity="center_horizontal"
        android:text="测试ListView的pointToPosition()方法" />

    <ListView
        android:id="@+id/listView"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_below="@id/textView" />

</RelativeLayout>

listviewitem如下:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="50dip"
    android:gravity="center"
    android:orientation="horizontal" >

    <TextView
        android:id="@+id/name"
        android:layout_width="100dip"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/phone"
        android:layout_width="150dip"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/amount"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />

</LinearLayout>