Android ListView和事件冒泡

Question

我有一個ListView的Android應用程序。我已經創建了一個都有一個複選框我自己的項目佈局，後面兩個TextViews和按鈕：

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout android:id="@+id/linearLayout1" android:layout_width="fill_parent" android:layout_height="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android"> 
    <CheckBox android:id="@+id/checkBox1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginRight="5dip"></CheckBox> 
    <RelativeLayout android:layout_height="match_parent" android:id="@+id/relativeLayout1" android:layout_width="match_parent"> 
     <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/button1" android:layout_alignParentRight="true" android:text="Button"></Button> 
     <TextView android:id="@+id/textView1" android:layout_height="wrap_content" android:textAppearance="?android:attr/textAppearanceLarge" android:text="TextView" android:layout_toLeftOf="@+id/button1" android:layout_alignTop="@+id/button1" android:layout_width="match_parent"></TextView> 
     <TextView android:id="@+id/textView2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textAppearance="?android:attr/textAppearanceSmall" android:text="TextView" android:layout_below="@+id/textView1" android:layout_alignLeft="@+id/textView1" android:layout_alignRight="@+id/textView1"></TextView> 
    </RelativeLayout> 
</LinearLayout> 

當用戶點擊該行，我想這取決於他們是否拍了拍複選框不同的行爲時，按鈕或行本身（即CheckBox或Button以外的其他任何東西）。這裏就是我試圖執行至今（使用setOnItemClickListener）：

package com.camelconsultants.shoplist; 

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

import org.json.JSONArray; 
import org.json.JSONException; 
import org.json.JSONObject; 

import android.app.ListActivity; 
import android.os.Bundle; 
import android.view.View; 
import android.widget.AdapterView; 
import android.widget.AdapterView.OnItemClickListener; 
import android.widget.ListView; 
import android.widget.SimpleAdapter; 
import android.widget.TextView; 
import android.widget.Toast; 

public class HelloAndroid extends ListActivity implements OnItemClickListener 
    { 
     ArrayList<HashMap<String, String>> Items = new ArrayList<HashMap<String, String>>(); 

     /** Called when the activity is first created. */ 
     @Override public void onCreate(Bundle savedInstanceState) 
      { 
       super.onCreate(savedInstanceState); 

       GetData(); 

       setListAdapter 
        ( 
         new SimpleAdapter 
          (
           this.getBaseContext(), 
           Items, 
           R.layout.multiitem, 
           new String[]{ "Code", "Description" }, 
           new int[]{ R.id.textView1, R.id.textView2 } 
          ) 
        ); 

       ListView lv = getListView(); 
       lv.setTextFilterEnabled(true); 

       lv.setOnItemClickListener(this); 
      } 

     public void onItemClick(AdapterView<?> parent, View view, int position, long id) 
      { 
       Toast.makeText 
        (
         getApplicationContext(), 
         parent.getItemAtPosition(position).toString(), 
         Toast.LENGTH_SHORT 
        ).show(); 
      } 

     void GetData() 
      { 
       HashMap<String, String> Item; 

       try 
        { 
         JSONObject JsonObject = new JSONObject(this.getResources().getString(R.string.Json)); 
         JSONArray JsonArray = JsonObject.getJSONArray("Items"); 

         for (int i = 0; i < JsonArray.length(); i++) 
          { 
           Item = new HashMap<String, String>(); 
           Item.put("Code", JsonArray.getJSONObject(i).getString("Code")); 
           Item.put("Description", JsonArray.getJSONObject(i).getString("Description")); 

           Items.add(Item); 
          } 
        } 
       catch(JSONException Bummer) 
        { 
         Bummer.printStackTrace(); 
        } 
      } 
    } 

當我運行應用程序，點擊TextViews之一，沒有任何反應！

解決此問題的最佳方法是什麼？

Answer 1

我發現我可以在xml定義中設置一個View的回調函數。下面是更新後的xml：

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout android:id="@+id/linearLayout1" android:clickable="true" android:onClick="onClick" android:layout_width="fill_parent" android:layout_height="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android"> 
    <CheckBox android:id="@+id/checkBox1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginRight="5dip" android:onClick="onCheckBoxClick"></CheckBox> 
    <RelativeLayout android:layout_height="match_parent" android:id="@+id/relativeLayout1" android:layout_width="match_parent"> 
     <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/button1" android:layout_alignParentRight="true" android:text="Button" android:onClick="onButtonClick"></Button> 
     <TextView android:id="@+id/textView1" android:layout_height="wrap_content" android:textAppearance="?android:attr/textAppearanceLarge" android:text="TextView" android:layout_toLeftOf="@+id/button1" android:layout_alignTop="@+id/button1" android:layout_width="match_parent"></TextView> 
     <TextView android:id="@+id/textView2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textAppearance="?android:attr/textAppearanceSmall" android:text="TextView" android:layout_below="@+id/textView1" android:layout_alignLeft="@+id/textView1" android:layout_alignRight="@+id/textView1"></TextView> 
    </RelativeLayout> 
</LinearLayout> 

我已經更新了與適當的回調掛鉤代碼：

package com.camelconsultants.shoplist; 

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

import org.json.JSONArray; 
import org.json.JSONException; 
import org.json.JSONObject; 

import android.app.ListActivity; 
import android.os.Bundle; 
import android.view.View; 
import android.widget.ListView; 
import android.widget.SimpleAdapter; 
import android.widget.Toast; 

public class HelloAndroid extends ListActivity 
    { 
     ArrayList<HashMap<String, String>> Items = new ArrayList<HashMap<String, String>>(); 

     /** Called when the activity is first created. */ 
     @Override public void onCreate(Bundle savedInstanceState) 
      { 
       super.onCreate(savedInstanceState); 

       GetData(); 

       setListAdapter 
        ( 
         new SimpleAdapter 
          (
           this.getBaseContext(), 
           Items, 
           R.layout.multiitem, 
           new String[]{ "Code", "Description" }, 
           new int[]{ R.id.textView1, R.id.textView2 } 
          ) 
        ); 

       ListView lv = getListView(); 
       lv.setTextFilterEnabled(true); 
      } 

     @SuppressWarnings("unchecked") 
     private HashMap<String, String> getItem(View view) 
      { 
       HashMap<String, String> Item = null; 

       ListView listView = getListView(); 

       int Position = listView.getPositionForView(view); 

       if (listView.getItemAtPosition(Position) instanceof HashMap) 
        Item = (HashMap<String, String>)listView.getItemAtPosition(Position); 

       return Item; 
      } 

     public void onClick(View view) 
      { 
       HashMap<String, String> Item = getItem(view); 
       if (Item == null) 
        return; 

       Toast.makeText 
        (
         getApplicationContext(), 
         Item.get("Code") + ", " + Item.get("Description"), 
         Toast.LENGTH_SHORT 
        ).show(); 
      } 

     public void onCheckBoxClick(View view) 
      { 
       HashMap<String, String> Item = getItem(view); 
       if (Item == null) 
        return; 

       Toast.makeText 
        (
         getApplicationContext(), 
         "CheckBox! - " + Item.get("Code") + ", " + Item.get("Description"), 
         Toast.LENGTH_SHORT 
        ).show(); 
      } 

     public void onButtonClick(View view) 
      { 
       HashMap<String, String> Item = getItem(view); 
       if (Item == null) 
        return; 

       Toast.makeText 
        (
         getApplicationContext(), 
         "Button! - " + Item.get("Code") + ", " + Item.get("Description"), 
         Toast.LENGTH_SHORT 
        ).show(); 
      } 

     void GetData() 
      { 
       HashMap<String, String> Item; 

       try 
        { 
         JSONObject JsonObject = new JSONObject(this.getResources().getString(R.string.Json)); 
         JSONArray JsonArray = JsonObject.getJSONArray("Items"); 

         for (int i = 0; i < JsonArray.length(); i++) 
          { 
           Item = new HashMap<String, String>(); 
           Item.put("Code", JsonArray.getJSONObject(i).getString("Code")); 
           Item.put("Description", JsonArray.getJSONObject(i).getString("Description")); 

           Items.add(Item); 
          } 
        } 
       catch(JSONException Bummer) 
        { 
         Bummer.printStackTrace(); 
        } 
      } 
    } 

的getItem功能通過查看經過長達getItemAtPosition返回HashMap的當前項目。關於這一點很酷的是，視圖是否嵌套無關緊要。

但是，我假設創建我自己的適配器並使用setTag方法更有效。但就目前而言，上面的代碼適合我的目的！

Answer 2

這個Link似乎有一些相關的信息。