android - ListView 中的切换按钮点击自身

Question

您好，我正在尝试创建一个应用程序，让您可以从 ListView 中选择兴趣，我创建了自己的带有 TextView 和切换按钮的自定义适配器，当单击切换按钮时，特定值将添加到共享首选项以供以后记住使用，我面临的问题是:

1) 当我点击列表中特定项目的切换按钮时，另一个也被点击
2)当我自动在列表中上下涂鸦时，其他项目被点击

userInterestList 是初始为空的共享偏好列表，interestList_Item 也是已初始化的共享偏好字符串数组

    public class Adapter extends BaseAdapter {
    int i=getCount()-1;
    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return interestList_Item.length;
    }

    @Override
    public String getItem(int position) {
        // TODO Auto-generated method stub
        return interestList_Item[position];
    }

    @Override
    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return position;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {

        if(convertView==null)
        {
            LayoutInflater inflater = (LayoutInflater) InterestsActivity.this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = inflater.inflate(R.layout.interest_list_item, parent,false);
        }
        final TextView userName = (TextView)convertView.findViewById(R.id.profile_name);
        final ToggleButton toggle = (ToggleButton)convertView.findViewWithTag("toggle");
        Log.d("","userInterestList : "+userInterestList+"  interestList_Item:"+interestList_Item.toString());            
        if(userInterestList.contains(interestList_Item[position]))
             toggle.setChecked(true);
        toggle.setOnCheckedChangeListener(new OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                // TODO Auto-generated method 
                if(isChecked){
                    if(userInterestList.equals(""))
                        userInterestList = interestList_Item[position];
                    else
                        userInterestList = userInterestList+",new"+interestList_Item[position];
                    _appPrefs.saveUserInterestList(userInterestList);
                        Log.d("","check position :- "+position+" "+userInterestList+" "+interestList_Item[position]);
                } else {
                        userInterestList = userInterestList.replace(interestList_Item[position], "");
                        _appPrefs.saveUserInterestList(userInterestList);
                        if(userInterestList.contains(",new,new"))
                             userInterestList = userInterestList.replaceAll(",new,new",",new");
                        _appPrefs.saveUserInterestList(userInterestList);
                        Log.d("","uncheck position :- "+position+" "+userInterestList+" "+interestList_Item[position]);
                }
            }
        });
        userName.setText(interestList_Item[position]);
        Log.d("","num :"+i+"     username :"+userName.getText()+"        position:"+position);
        return convertView;
    }

启动时记录:-

num :14     username :Cars        position:0
num :14     username :Business        position:1
num :14     username :Drinking        position:2
num :14     username :Travelling        position:3
num :14     username :Making recycled paper        position:4
num :14     username :Animal care        position:5
num :14     username :Organic farming        position:6
num :14     username :Cars        position:0
num :14     username :Business        position:1
num :14     username :Drinking        position:2
num :14     username :Travelling        position:3
num :14     username :Making recycled paper        position:4
num :14     username :Animal care        position:5
num :14     username :Organic farming        position:6
num :14     username :Ice skating        position:7
num :14     username :Cars        position:0
num :14     username :Business        position:1
num :14     username :Drinking        position:2
num :14     username :Travelling        position:3
num :14     username :Making recycled paper        position:4
num :14     username :Animal care        position:5
num :14     username :Organic farming        position:6

问题:-
为什么前 7 个列表项显示了这么多次而不是所有列表项？

点击切换时登录:-

    check position :- 0 Cars Cars
check position :- 6 Cars,newOrganic farming Organic farming
num :14     username :Cars        position:0
num :14     username :Business        position:1
num :14     username :Drinking        position:2
num :14     username :Travelling        position:3
num :14     username :Making recycled paper        position:4
num :14     username :Animal care        position:5
num :14     username :Organic farming        position:6

问题:-
为什么在单击一个项目时选择了 2 个项目？

乱写时记录:-

num :14     username :Racing        position:8
num :14     username :Cars        position:0
num :14     username :Ice skating        position:7
num :14     username :Racing        position:8
num :14     username :Hunting        position:9
num :14     username :Gymnastics        position:10
num :14     username :Painting        position:11
num :14     username :Video gaming        position:12
num :14     username :Fishing        position:13
num :14     username :Swimming        position:14
num :14     username :Racing        position:8
num :14     username :Ice skating        position:7
check position :- 14 ,newOrganic farming,newSwimming Swimming
num :14     username :Organic farming        position:6
num :14     username :Animal care        position:5
num :14     username :Making recycled paper        position:4
num :14     username :Travelling        position:3
num :14     username :Drinking        position:2
num :14     username :Business        position:1

问题:-
涂鸦时为什么会自己点击？

谢谢

Answer 1

这是因为在 Listview 中重用了 Views..这里 setChecked() 方法调用了 onCheckedChangeListener..所以在 setChecked() 之前我们将监听器设置为 null..之后我们再次设置监听器..改变这一行

 if(userInterestList.contains(interestList_Item[position]))
         toggle.setChecked(true);

进入

  toggle.setOnCheckedChangeListener(null);
    if (userInterestList.contains(interestList_Item[position])) {
        toggle.setChecked(true);
    } else {
        toggle.setChecked(false);
    }
    //Here again set the listener as in your code..

像往常一样继续保持并尝试..