在自定义列表视图号码选择器本身换号 [英] Number picker in custom listview changing number by itself

问题描述

我的应用程序的工作中，我使用的是自定义ArrayAdaptor来填充我的listView.The customoized行包括在其活动有一定的文本框沿数字选择器。
现在的问题部分 - >
有趣的是，其他行，当我改变一个特定的行号选择器的其他一些拾荒者数得到改变automatically.I我的code近2天了，请您及时的帮助。

I am working on app in which I am using a Custom ArrayAdaptor to populate my listView.The customoized row includes a number Picker along with some text boxes in its activity. Now the Problem Part--> The funny part is that when i am changing the number of number picker in a particular row other number pickers of other rows get changed automatically.I have been staring at my code almost 2 days now .Please help

Custom_row.java

Custom_row.java

公共类Custom_row扩展ArrayAdapter {

public class Custom_row extends ArrayAdapter {

static Button ProPay;
Context context;
int newValcount=0;

public Custom_row(Context context, int resourceId,
                  List<DataItem> items) {
    super(context, resourceId, items);
    this.context = context;
}
private class ViewHolder {
    TextView Items,Cost;
    NumberPicker number;


}
public View getView(int position, View convertView, ViewGroup parent) {

    ViewHolder holder = null;
    DataItem dataItem = getItem(position);
    LayoutInflater mInflater = (LayoutInflater) context
            .getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
    if (convertView == null) {
        convertView = mInflater.inflate(R.layout.activity_custom_row, null);
        holder = new ViewHolder();
        holder.Items = (TextView) convertView.findViewById(R.id.tvItem);
        holder.Cost = (TextView) convertView.findViewById(R.id.tvCost);
        holder.number=(NumberPicker)convertView.findViewById(R.id.numberPicker);
        holder.number.setMaxValue(10);
        holder.number.setMinValue(0);
        holder.number.setValue(0);
        holder.number.setFocusable(false);
        ItemList.picker = holder.number;
        holder.number.setOnValueChangedListener(new NumberPicker.OnValueChangeListener() {
            @Override
            public void onValueChange(NumberPicker picker, int oldVal, int newVal) {

                if(newVal!=0){
                    newValcount++;
                    if(newValcount > 0)
                        ProPay.setVisibility(View.VISIBLE);
                }
                else{
                    newValcount--;
                    if(newValcount==0)
                        ProPay.setVisibility(View.INVISIBLE);

                }
            }
        });
        convertView.setTag(holder);
    }
    else{
        holder = (ViewHolder) convertView.getTag();
    }
    holder.Items.setText(dataItem.getItem());
    holder.Cost.setText(dataItem.getCost());
    return convertView;
}

}

ItemList.java
`公共类ITEMLIST延伸活动{
    公众的ListView ListView的;
    公共静态列表dataItems;
    按钮PayPro;
    静态NumberPicker选择器;

ItemList.java `public class ItemList extends Activity { public ListView listView; public static List dataItems; Button PayPro; static NumberPicker picker;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_item_list);
    listView = (ListView)findViewById(R.id.itemList);
    Custom_row.ProPay=(Button)findViewById(R.id.bProPay);
    Custom_row adapter = new Custom_row(this,
            R.layout.activity_custom_row, dataItems);
    listView.setAdapter(adapter);
}
}

`

推荐答案

Custom_row.java
                                                                               `holder.numberPicker.setOnValueChangedListener（新NumberPicker.OnValueChangeListener（）{
            @覆盖
            公共无效onValueChange（NumberPicker选择器，INT OLDVAL，诠释的newval）{
                查看parentRow =（查看）picker.getParent（）;
                ListView控件mListView =（ListView控件）parentRow.getParent（）;
                最终诠释位置= mListView.getPositionForView（parentRow）;
                setPickerNumber（位置，的newval）;
                如果（的newval> OLDVAL）{
                    newValcount = newValcount +的newval - OLDVAL;

Custom_row.java `holder.numberPicker.setOnValueChangedListener(new NumberPicker.OnValueChangeListener() { @Override public void onValueChange(NumberPicker picker, int oldVal, int newVal) { View parentRow = (View)picker.getParent(); ListView mListView =(ListView)parentRow.getParent(); final int position = mListView.getPositionForView(parentRow); setPickerNumber(position,newVal); if(newVal > oldVal){ newValcount = newValcount + newVal - oldVal;

            }
            if(oldVal > newVal){
                newValcount = newValcount + newVal - oldVal;
            }
            if(newValcount>0)
            {
                ProPay.setVisibility(View.VISIBLE);
            }
            else{
                ProPay.setVisibility(View.INVISIBLE);
            }
        }
    });`

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