列表项重复的安卓定制列表视图 [英] List item repeating in android customized listview

问题描述

在我的自定义列表视图中的项目是项目repeating.position是相同的所有项目。 code低于

ListAdapter.java -

 公共类ListAdapter扩展了BaseAdapter {

    私人列表＆LT;字符串＆GT; MNAME;
私人列表＆LT;可绘制＆GT;米康;
私人语境mContext;

公共ListAdapter（上下文mContext，列表和LT;字符串＆GT;名称，目录和LT;可绘制＆GT;图标）{
    this.mContext = mContext;
    this.mName =名称;
    this.mIcon =图标;
}

@覆盖
公众诠释getCount将（）{
    // TODO自动生成方法存根
    返回mName.size（）;
}

@覆盖
公共对象的getItem（INT位置）{
    // TODO自动生成方法存根
    返回的位置;
}

@覆盖
众长getItemId（INT位置）{
    // TODO自动生成方法存根
    返回的位置;
}

@覆盖
公共查看getView（最终诠释的立场，观点V，ViewGroup中父）{

    查看mLayout;
    TextView的多行文字;
    ImageView的mImage;
    复选框mCheckBox;

    如果（V == NULL）{
        LayoutInflater充气=（LayoutInflater）mContext.getSystemService（Context.LAYOUT_INFLATER_SERVICE）;
        mLayout =新景（mContext）;
        mLayout =（的LinearLayout）inflater.inflate（R.layout.list_menu，NULL）;

        多行文字=（TextView中）mLayout.findViewById（R.id.Name）;
        mImage =（ImageView的）mLayout.findViewById（R.id.Icon）;
        mCheckBox =（复选框）mLayout.findViewById（R.id.mCheckbox）;

        mText.setText（mName.get（位置））;
        mImage.setImageDrawable（mIcon.get（位置））;

        mCheckBox.setOnCheckedChangeListener（新OnCheckedChangeListener（）{

            @覆盖
            公共无效onCheckedChanged（CompoundButton检查，布尔器isChecked）{
                如果（check.isChecked（））{
                    Toast.makeText（mContext，...+ mName.get（位置）+...+位置，Toast.LENGTH_SHORT）.show（）;
                }
            }
        }）;
    }
    其他{
        mLayout =（查看）V;
    }
    返回mLayout;
}

  }
 

解决方案

试试这个，你需要 setTag（）每个convertview。

  @覆盖
公共查看getView（最终诠释的立场，观点convertView，ViewGroup中父）{
    最后ViewHolder mHolder;
    如果（convertView == NULL）{
        convertView = mInflater.inflate（R.layout.list_menu，NULL）;
        mHolder =新ViewHolder（）;

        mHolder.mText =（TextView中）convertView.findViewById（R.id.appName）;
        mHolder.mImage =（ImageView的）convertView.findViewById（R.id.appIcon）;
        mHolder.mCheckBox =（复选框）convertView.findViewById（R.id.mCheckbox）;

        convertView.setTag（mHolder）;

    } 其他 {
        mHolder =（ViewHolder）convertView.getTag（）;
    }

    返回convertView;
}

私有类ViewHolder {
    私人TextView的多行文字;
    私人ImageView的mImage;
    私人复选框mCheckBox;

}
 

In my customized list view items are repeating.position of item is same for all item. code is below

ListAdapter.java-

    public class ListAdapter extends BaseAdapter{

    private List<String> mName;
private List<Drawable> mIcon;
private Context mContext;

public ListAdapter(Context mContext, List<String> Name, List<Drawable> Icon) {
    this.mContext=mContext;
    this.mName=Name;
    this.mIcon=Icon;
}

@Override
public int getCount() {
    // TODO Auto-generated method stub
    return mName.size();
}

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

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

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

    View mLayout;
    TextView mText;
    ImageView mImage;
    CheckBox mCheckBox;

    if(v==null){
        LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        mLayout=new View(mContext);
        mLayout=(LinearLayout) inflater.inflate(R.layout.list_menu, null);

        mText=(TextView) mLayout.findViewById(R.id.Name);
        mImage=(ImageView) mLayout.findViewById(R.id.Icon);
        mCheckBox=(CheckBox) mLayout.findViewById(R.id.mCheckbox);

        mText.setText(mName.get(position));
        mImage.setImageDrawable(mIcon.get(position));

        mCheckBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(CompoundButton check, boolean isChecked) {
                if(check.isChecked()){
                    Toast.makeText(mContext, "..."+mName.get(position)+"..."+position, Toast.LENGTH_SHORT).show();
                }
            }
        });
    }   
    else{
        mLayout=(View)v;
    }
    return mLayout;
}

  }

解决方案

try this one, You need to setTag() for each convertview.

 @Override
public View getView(final int position, View convertView, ViewGroup parent) {
    final ViewHolder mHolder;
    if (convertView == null) {
        convertView = mInflater.inflate(R.layout.list_menu, null);
        mHolder = new ViewHolder();

        mHolder.mText=(TextView) convertView.findViewById(R.id.appName);
        mHolder.mImage=(ImageView) convertView.findViewById(R.id.appIcon);
        mHolder.mCheckBox=(CheckBox) convertView.findViewById(R.id.mCheckbox);

        convertView.setTag(mHolder);

    } else {
        mHolder = (ViewHolder) convertView.getTag();
    }

    return convertView;
}

private class ViewHolder {
    private TextView mText;
    private ImageView mImage;
    private CheckBox mCheckBox;

}

这篇关于列表项重复的安卓定制列表视图的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！