Java 为什么我的ListView呈现重复的项目？

这就是我填充我的

列表视图的方式：

这是一个场景：

1-创建两个阵列

2-创建RowItem类
3-创建ListAdapter
公共类ListAdapter扩展了BaseAdapter{
语境；
列出项目；
字符串描述；
长期权；
公共ListAdapter（上下文上下文、列表行项、字符串描述、长选项）
{
this.context=上下文；
this.rowItem=rowItem；
this.description=描述；
this.option=选项；
}
@凌驾
public int getCount（）{
返回rowItem.size（）；
}
@凌驾
公共对象getItem（int位置）{
返回rowItem.get（位置）；
}
@凌驾
公共长getItemId（int位置）{
返回rowItem.indexOf（getItem（position））；
}
@凌驾
公共视图getView（int位置、视图转换视图、视图组父视图）{
if（convertView==null）{
LayoutInflater mInflater=（LayoutInflater）上下文
.getSystemService（活动.布局\充气机\服务）；
convertView=mInflater.充气（R.layout.lv_箭头，空）；
ImageView imgIcon=（ImageView）convertView.findViewById（R.id.imageView1）；
TextView txtTitle=（TextView）convertView.findViewById（R.id.textView1）；
IconRow row_pos=rowItem.get（位置）；
//设置图像资源和标题
imgIcon.setImageResource（row_pos.getIcon（））；
setText（row_pos.getTitle（））；
}
返回视图；
}

4-创建行布局


5-在片段内创建列表
@覆盖
创建视图上的公共视图（布局、充气机、视图组容器、，
Bundle savedInstanceState）{
视图根视图=充气机。充气（R.layout.fragment\u参数\u设置，容器，false）；
lv_settings_1=（ListView）rootView.findviewbyd（R.id.lv_settings_1）；
menutiles=getResources（）.getStringArray（R.array.array\u lv\u settings\u 1）；
menuIcons=getResources（）.obtainTypedArray（R.array.arrow_图标）；
menu_iconRow=新建ArrayList（）；
for（int i=0；i

问题
当使用此方法时，列表中最多有7项或更多项，它开始重复并填充错误。发生了什么事？
尝试更改适配器代码的这一部分：

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

    if (convertView == null) {
        LayoutInflater mInflater = (LayoutInflater) context
            .getSystemService(Activity.LAYOUT_INFLATER_SERVICE);

        convertView = mInflater.inflate(R.layout.lv_arrow, null);
    }


    ImageView imgIcon = (ImageView) convertView.findViewById(R.id.imageView1);
    TextView txtTitle = (TextView) convertView.findViewById(R.id.textView1);

    IconRow row_pos = rowItem.get(position);
    // setting the image resource and title
    imgIcon.setImageResource(row_pos.getIcon());
    txtTitle.setText(row_pos.getTitle());

    return convertView;
}

convert视图可能与旧值一起重新使用
尝试更改适配器代码的这一部分：

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

    if (convertView == null) {
        LayoutInflater mInflater = (LayoutInflater) context
            .getSystemService(Activity.LAYOUT_INFLATER_SERVICE);

        convertView = mInflater.inflate(R.layout.lv_arrow, null);
    }


    ImageView imgIcon = (ImageView) convertView.findViewById(R.id.imageView1);
    TextView txtTitle = (TextView) convertView.findViewById(R.id.textView1);

    IconRow row_pos = rowItem.get(position);
    // setting the image resource and title
    imgIcon.setImageResource(row_pos.getIcon());
    txtTitle.setText(row_pos.getTitle());

    return convertView;
}

convert视图可能与旧值一起重新使用
尝试更改适配器代码的这一部分：

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

    if (convertView == null) {
        LayoutInflater mInflater = (LayoutInflater) context
            .getSystemService(Activity.LAYOUT_INFLATER_SERVICE);

        convertView = mInflater.inflate(R.layout.lv_arrow, null);
    }


    ImageView imgIcon = (ImageView) convertView.findViewById(R.id.imageView1);
    TextView txtTitle = (TextView) convertView.findViewById(R.id.textView1);

    IconRow row_pos = rowItem.get(position);
    // setting the image resource and title
    imgIcon.setImageResource(row_pos.getIcon());
    txtTitle.setText(row_pos.getTitle());

    return convertView;
}

convert视图可能与旧值一起重新使用
尝试更改适配器代码的这一部分：

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

    if (convertView == null) {
        LayoutInflater mInflater = (LayoutInflater) context
            .getSystemService(Activity.LAYOUT_INFLATER_SERVICE);

        convertView = mInflater.inflate(R.layout.lv_arrow, null);
    }


    ImageView imgIcon = (ImageView) convertView.findViewById(R.id.imageView1);
    TextView txtTitle = (TextView) convertView.findViewById(R.id.textView1);

    IconRow row_pos = rowItem.get(position);
    // setting the image resource and title
    imgIcon.setImageResource(row_pos.getIcon());
    txtTitle.setText(row_pos.getTitle());

    return convertView;
}

convert视图可能与旧值一起重新使用
修复：
3-创建ListAdapter

    public class ListAdapter extends BaseAdapter {

   ...

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

        if (convertView == null) {
            LayoutInflater mInflater = (LayoutInflater) context
                    .getSystemService(Activity.LAYOUT_INFLATER_SERVICE);

                convertView = mInflater.inflate(R.layout.lv_arrow, null);

    }
            ImageView imgIcon = (ImageView) convertView.findViewById(R.id.imageView1);
            TextView txtTitle = (TextView) convertView.findViewById(R.id.textView1);

            IconRow row_pos = rowItem.get(position);
            // setting the image resource and title
            imgIcon.setImageResource(row_pos.getIcon());
            txtTitle.setText(row_pos.getTitle());
        }

        return convertView;
    }

阅读有关ViewHolder的信息。
修复：
3-创建ListAdapter

    public class ListAdapter extends BaseAdapter {

   ...

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

        if (convertView == null) {
            LayoutInflater mInflater = (LayoutInflater) context
                    .getSystemService(Activity.LAYOUT_INFLATER_SERVICE);

                convertView = mInflater.inflate(R.layout.lv_arrow, null);

    }
            ImageView imgIcon = (ImageView) convertView.findViewById(R.id.imageView1);
            TextView txtTitle = (TextView) convertView.findViewById(R.id.textView1);

            IconRow row_pos = rowItem.get(position);
            // setting the image resource and title
            imgIcon.setImageResource(row_pos.getIcon());
            txtTitle.setText(row_pos.getTitle());
        }

        return convertView;
    }

阅读有关ViewHolder的信息。
修复：
3-创建ListAdapter

    public class ListAdapter extends BaseAdapter {

   ...

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

        if (convertView == null) {
            LayoutInflater mInflater = (LayoutInflater) context
                    .getSystemService(Activity.LAYOUT_INFLATER_SERVICE);

                convertView = mInflater.inflate(R.layout.lv_arrow, null);

    }
            ImageView imgIcon = (ImageView) convertView.findViewById(R.id.imageView1);
            TextView txtTitle = (TextView) convertView.findViewById(R.id.textView1);

            IconRow row_pos = rowItem.get(position);
            // setting the image resource and title
            imgIcon.setImageResource(row_pos.getIcon());
            txtTitle.setText(row_pos.getTitle());
        }

        return convertView;
    }

阅读有关ViewHolder的信息。
修复：
3-创建ListAdapter

    public class ListAdapter extends BaseAdapter {

   ...

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

        if (convertView == null) {
            LayoutInflater mInflater = (LayoutInflater) context
                    .getSystemService(Activity.LAYOUT_INFLATER_SERVICE);

                convertView = mInflater.inflate(R.layout.lv_arrow, null);

    }
            ImageView imgIcon = (ImageView) convertView.findViewById(R.id.imageView1);
            TextView txtTitle = (TextView) convertView.findViewById(R.id.textView1);

            IconRow row_pos = rowItem.get(position);
            // setting the image resource and title
            imgIcon.setImageResource(row_pos.getIcon());
            txtTitle.setText(row_pos.getTitle());
        }

        return convertView;
    }

阅读有关ViewHolder的内容。
因为所有内容都在
if（convertView==null）{
块中因为所有内容都在
if（convertView==null）{
块中因为所有内容都在
if（convertView==null）{
块中