Android如何使用复选框识别 ListView 中的项目

Question

我真的被困在这里了。我想要的并不简单(对我来说)，但是我已经编写了 android 程序一年了。我想要的是一个 ListView ，每行都有一个 ImageView 、一个 TextView 、一个复选框和另一个 TextView 。让我们在布局中首先有一个 TextView 和一个复选框。基于this教程我设法做到了(有很多，但这对我来说似乎是最好的)。我有一个 ListView ，其中填充了 TextView 和复选框。

这是结果:

这就是我如何获取我点击的textview的文本:

 textView.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            TextView tv = (TextView) v ;
            String text_of_clicked_textview = tv.getText().toString();
            Log.i("TAG", "" + text_of_clicked_textview);
        }
    });

所以当我点击 Mercury 时，我在 text_of_clicked_textview 变量中得到 Mercury。

但是我怎样才能检查我点击了哪个复选框呢？例如，我点击第三个复选框，我想现在它在地球的行中。最好的办法是，如果我同时了解 ListView 行中的 TextView 文本 (Earth) 和项目编号 (3)。

我想我必须在复选框上设置一个 onClickListener，但下一步是什么？

checkBox.setOnClickListener( new View.OnClickListener() {
      public void onClick(View v) {
        CheckBox cb = (CheckBox) v ;

      }
    });

Answer 1

这是 ListView 中自定义行的 XML:

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent">

        <ImageView
            android:id="@+id/imageView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/camera_icon" />

        <TextView
            android:id="@+id/textView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Large Text"
            android:textAppearance="?android:attr/textAppearanceLarge" />

        <CheckBox
            android:id="@+id/checkBox1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="" 
     />

</LinearLayout>

这是实现列表的完整 Activity :只需复制此 Activity 进行测试，然后理解代码。在主 Activity 中放置一个 ListView

package com.DemoTest;

import java.util.ArrayList;
import java.util.List;
import java.util.zip.Inflater;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

public class CustomList extends Activity implements OnClickListener
{

    ListView listView;
    ArrayList<EachRow> list=new ArrayList<CustomList.EachRow>();
    EachRow each;
    @Override
    protected void onCreate(Bundle savedInstanceState) 
    {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        String[] color={"red","green","blue","white","yellow","cyan","purple","grey",
                "0red","0green","0blue","0white","0yellow","0cyan","0purple","0grey",
                "1red","1green","1blue","1white","1yellow","1cyan","1purple","1grey"};
        for(String str : color)
        {
            each=new EachRow();
            each.text=str;
            list.add(each);
        }
        listView=(ListView)findViewById(R.id.listView1);
        listView.setAdapter(new MyAdapter(this, 0, list)); 
        //listView.setOnItemClickListener(this);
    }
    class MyAdapter extends ArrayAdapter<EachRow>
    {
        LayoutInflater inflat;
        ViewHolder holder;
        public MyAdapter(Context context, int textViewResourceId,
                ArrayList<EachRow> objects) 
        {
            super(context, textViewResourceId, objects);
            // TODO Auto-generated constructor stub
            inflat=LayoutInflater.from(context);
        }
        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            // TODO Auto-generated method stub

            if(convertView==null)
            {
                convertView=inflat.inflate(R.layout.row_checkox, null);
                holder=new ViewHolder();
                holder.textView=(TextView)convertView.findViewById(R.id.textView1);
                holder.image=(ImageView)convertView.findViewById(R.id.imageView1);
                holder.check=(CheckBox)convertView.findViewById(R.id.checkBox1);
                holder.check.setOnClickListener(CustomList.this);
                convertView.setTag(holder);
            }
            holder=(ViewHolder) convertView.getTag();
            EachRow row= getItem(position);
            Log.d("size", row.text);
            holder.textView.setText(row.text); 
            holder.check.setChecked(row.checkBool); 
            holder.check.setTag(position);
            return convertView;
        }

        @Override
        public EachRow getItem(int position) {
            // TODO Auto-generated method stub
            return list.get(position);
        }

        private class ViewHolder
        {
            TextView textView;
            ImageView image;
            CheckBox check;
        }
    }
    private class EachRow
    {
        String text;
        boolean checkBool;
    }



    @Override
    public void onClick(View v) 
    {
        // TODO Auto-generated method stub

        EachRow row=list.get((Integer)v.getTag());
         row.checkBool=!row.checkBool;
         Log.d("item", "Item Click at "+(Integer)v.getTag()+" : "+row.text+" is "+row.checkBool); 
    }

}