爲什麼單擊listview項目會觸發CAB？

Question

我是Android應用程序開發的新手，現在我被一個問題困擾了。 我的應用程序使用SimpleAdapter作爲適配器來填充列表視圖，我已經實現了AdapterView.OnItemClickListener接口並將其註冊到列表視圖，還實現了AbsListView.MultiChoiceModeListener接口來處理長按事件。但是當我單擊列表視圖中的項目時，將觸發onItemClicked()方法並顯示CAB，爲什麼？

下面是我的代碼：

package com.XXX.listviewdemo; 

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

import android.annotation.SuppressLint; 
import android.app.Activity; 
import android.graphics.Color; 
import android.os.Bundle; 
import android.view.ActionMode; 
import android.view.Menu; 
import android.view.MenuInflater; 
import android.view.MenuItem; 
import android.view.MotionEvent; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.view.Window; 
import android.widget.AbsListView; 
import android.widget.AdapterView; 
import android.widget.AdapterView.OnItemClickListener; 
import android.widget.Button; 
import android.widget.CheckBox; 
import android.widget.CompoundButton; 
import android.widget.CompoundButton.OnCheckedChangeListener; 
import android.widget.ListView; 
import android.widget.SimpleAdapter; 
import android.widget.TextView; 
import android.widget.Toast; 

public class MainActivity extends Activity { 

    private Button like = null; 
    private ListView list = null; 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     requestWindowFeature(Window.FEATURE_NO_TITLE); 
     setContentView(R.layout.activity_main); 
     List<Map<String,String>> data = new ArrayList<Map<String,String>>(); 
     String ITEM1 = "Name", ITEM2 = "Age", ITEM3 = "Gender", ITEM4 = "Country"; 
     String[] names = {"Jim","Tim","Tom","Jack","James","Jason","Anna","Lucy","Lily","Venus"}; 
     String[] ages = {"21","22","23","23","21","37","34","26","28","29"}; 
     String[] genders = {"Male","Male","Male","Male","Male","Male","Female","Female","Female","Female"}; 
     String[] countries = {"UK","US","US","CN","AU","CA","CA","CA","US","UK"}; 
     for(int i=0;i<10;i++){ 
      Map<String,String> mapItem = new HashMap<String,String>(); 
      mapItem.put(ITEM1, names[i]); 
      mapItem.put(ITEM2, ages[i]); 
      mapItem.put(ITEM3, genders[i]); 
      mapItem.put(ITEM4, countries[i]); 
      data.add(mapItem); 
     } 
     list = (ListView)findViewById(R.id.listView); 
     list.setClickable(true); 
     list.setAdapter(new SimpleAdapter(MainActivity.this,data,R.layout.list, 
       new String[]{ITEM1,ITEM2,ITEM3,ITEM4},new int[]{R.id.listName,R.id.listAge,R.id.listGender,R.id.listCountry})); 
     list.setOnItemClickListener(new listItemClickListener()); 
     list.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL); 
     list.setMultiChoiceModeListener(new AbsListView.MultiChoiceModeListener(){ 
      public boolean onActionItemClicked(ActionMode mode, MenuItem item) { 
       switch(item.getItemId()){ 
       case R.id.menu_delete: 
        System.out.println("trying to remove a list view item"); 
        mode.finish(); 
        return true; 
       default: 
        return false; 
       } 
      } 

      public boolean onCreateActionMode(ActionMode mode, Menu menu) { 
       MenuInflater inflater = mode.getMenuInflater(); 
       inflater.inflate(R.menu.activity_main, menu); 
       return true; 
      } 

      public void onDestroyActionMode(ActionMode arg0) {} 
      public boolean onPrepareActionMode(ActionMode arg0, Menu arg1) {return false;} 
      public void onItemCheckedStateChanged(ActionMode arg0, int arg1,long arg2, boolean arg3) {} 
     }); 
     list.setOnHoverListener(new View.OnHoverListener() { 
      public boolean onHover(View arg0, MotionEvent arg1) { 
       arg0.setBackgroundColor(Color.CYAN); 
       return false; 
      } 
     }); 
    } 

    class listItemClickListener implements OnItemClickListener{ 
     public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, 
       long arg3) { 
      System.out.println("The adapter view ID is====> "+arg0.getId()); 
      System.out.println("The clicked item ID is====> "+arg1.getId());; 
      System.out.println("The clicked item Pos is====> "+arg2); 
      System.out.println("The clicked Row is====> "+arg3); 
      ((ListView)arg0).setItemChecked(arg2, true); 
      Toast.makeText(MainActivity.this, "You selected "+((TextView)arg1.findViewById(R.id.listName)).getText(), Toast.LENGTH_SHORT).show(); 
     } 
    } 


    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.activity_main, menu); 
     return true; 
    } 
} 

另外，我想知道如何刪除onActionItemClicked()方法列表視圖的列時，用戶扮演一個長按，然後單擊CAB delete菜單。

Answer 1

@Override 
protected void onListItemClick(ListView l, View v, int position, long id) { 
if (adapter.getItem(position).getResult() != null) 
{ 
    Intent intent = new Intent(HistoryActivity.this, CaptureActivity.class); 
    intent.putExtra(Intents.History.ITEM_NUMBER, position); 
    setResult(Activity.RESULT_OK, intent); 
    Toast.makeText(getApplicationContext(), "Long press on item to get Contextmenu", Toast.LENGTH_LONG).show(); 
    //finish(); 
} 

你好，請檢查您的onListItemClick並使用一個適配器來獲得該項目位置和長按事件執行下面的代碼

 listView.setOnItemLongClickListener (new OnItemLongClickListener() { 
    public boolean onItemLongClick(AdapterView parent, View view, int position, long id)   
    { 

    //do your stuff here 
    } 
    });