Question

我看到link，但没有答案。

有人能解释为什么会发生这件事吗？这个事件如何触发？如何解决？

在观察我的listview后，我的LayoutInflater是添加我的多个页眉和页脚的原因..我怎么能阻止它添加项目或重置我的LayoutInflater？

这是我的代码在onResume触发时从ListView填充项目

    public void fillListViewOR(List<HashMap<String, String>> list)
    {
        String[] from = { 
                "textViewModeOfPaymentCheckValue",
                "textViewBankNameCheckIssued",
                "textViewCheckNumber",
                "textViewCheckDateValue",
        "textViewModeOfPayCheckValue"};
        int[] to = { R.id.textViewModeOfPaymentCheckValue,
                R.id.textViewBankNameCheckIssued,
                R.id.textViewCheckNumValue,
                R.id.textViewCheckDateValue,
                R.id.textViewModeOfPayCheckValue};

        String[] from2 = { 
                "textViewModeOfPaymentCheckValue",
                "textViewBankNameCheckIssued",
                "textViewCheckNumber",
                "textViewCheckDate",
                "textViewModeOfPayCheckValue"};
        int[] to2 = { R.id.textViewModeOfPaymentCheckValue,
                R.id.textViewBankNameCheckIssued,
                R.id.textViewCheckNumber,
                R.id.textViewCheckDate,
                R.id.textViewModeOfPayCheckValue};


        adapterListView = new SpecialAdapter(getBaseContext(),list,R.layout.listview_layout,from2,to2);
        adapterListView.notifyDataSetChanged();

        headerViewOR = ((LayoutInflater) this.getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(R.layout.jpos_or_header, null, false);
        //bodyView = ((LayoutInflater) this.getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(R.layout.listview_layout, null, false);
        footerViewOR = ((LayoutInflater) this.getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(R.layout.jpos_or_footer, null, false);   

        lv.addHeaderView(headerViewOR);
        lv.addFooterView(footerViewOR);
        lv.setAdapter(adapterListView);

    ----------------------
    --- and so on from the view items of the header and footer

}

这是我的特殊适配器

public class SpecialAdapter extends SimpleAdapter {
    public static TextView tv;
    private int[] colors = new int[] { 0xffcccccc , 0xffffffff };
    private int[] colors2 = new int[] { 0xffffffff , 0xff000000 }; 
   // Context context;
    public SpecialAdapter(Context context, List<HashMap<String, String>> items, int resource, String[] from, int[] to) {
        super(context, items, resource, from, to);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
      View view = super.getView(position, convertView, parent);
      int colorPos = position % colors.length;
      view.setBackgroundColor(colors[colorPos]);
      //TextView textView = (TextView)view.findViewById(R.id.textViewModAmountCheck);
      //textView.setText("AlvinTest");
      return view;
    }


    public View getView2(Context context, int position, View convertView, ViewGroup parent) {
        LayoutInflater layoutInflater = LayoutInflater.from(context);//get your layout inflator;

//LayoutInflater inf = LayoutInflater.from(getContext());
        if (convertView == null) {
            convertView = layoutInflater.inflate(R.layout.listview_layout, null);
        }
        LinearLayout yyy = (LinearLayout) convertView.findViewById(R.id.linearCheckDate);
        yyy.setVisibility(View.GONE);
        return convertView;
    }

    public View getViewChild(Context context, int position, View convertView, ViewGroup parent) {
        LayoutInflater layoutInflater = LayoutInflater.from(context);//get your layout inflator;
       // LayoutInflater inf = LayoutInflater.from(this);
        if (convertView == null) {
            convertView = layoutInflater.inflate(R.layout.listview_layout, null);
        }
        LinearLayout yyy = (LinearLayout) convertView.findViewById(R.id.linearCheckDate);
        yyy.setVisibility(View.GONE);
        return convertView;
    }




    public boolean setViewValue(View view, Cursor cursor, int columnIndex){    
        int getIndex = cursor.getColumnIndex("Name");
        String empname = cursor.getString(getIndex);
        tv = (TextView) view;
        tv.setTextColor(Color.WHITE);
        tv.setText(empname);
        if(empname.equals("Any String"))
        {                   
            tv.setTextColor(Color.rgb(58, 58, 224));
            return true;
        }
        return false;           
    }
}

Answer 1

我会尝试评论这一行：

adapterListView.notifyDataSetChanged();

我认为这会导致您的数据被处理两次。

Answer 2

使用LayoutInflater代码的所有ListView操作必须放在@onCreate而不是@onResume这是我的错误，因为我使用了错误的填充ListView的格式，因为我使用了我的这个过程我的申请的先前操作。

因为当我们关闭应用程序时，它会保留布局，并在我们重新打开应用程序后转到@onResume，@onStart，它不会转到@onCreate操作，因为它是已创建。这就是为什么我的列表视图有多个页眉和页脚视图的原因。

当我关闭应用程序并重新打开它时，为什么我的ListView会自动添加另一个列表视图？

2 个答案: