Question

我有一个带复选框的列表视图，每当用户按下复选框时我都会收到一些用户信息（例如说facebook的个人资料ID）并且存储在arraylist中。现在问题是每当用户滚动列表视图时，除了它之外，还添加或删除了一些其他配置文件ID。没有标记。所以提供

数组索引超出绑定异常

我试图解决问题，但我无法做到，请为我提供一些解决方案。

这是我的完整列表视图

public class MyComposeListItemAdapter extends ArrayAdapter {

public Context mContext;
int row;
public List<MyComposeObject> arrayList;     
public ImageLoader imageLoader;     
private static LayoutInflater inflater=null;    

/*
 * Create an ArrayList of Boolean Object to store the state of the each CheckBox
 * Initializes the ArrayList items to default value false, means no CheckBox is checked yet.
 * When you click on CheckBox. Set a check against Checked/Unchecked state and store that value in ArrayList.
 * Now set that position to CheckBox using setChecked() method.*/

private ArrayList<Boolean> itemChecked = new ArrayList<Boolean>();  

// for radio button 
private RadioButton mCurrentlyCheckedRB;
private boolean userSelected = false;
private int mResourceId = 0;
private RadioButton mSelectedRB;
private int mSelectedPosition = -1;//

public static List<String> selected_profileid =new ArrayList<String>();
public static List<String> selected_profiletype =new ArrayList<String>();

public MyComposeListItemAdapter(Context context, int resource) {
    super(context, resource);
    // TODO Auto-generated constructor stub

    this.mContext = context;
    this.row = resource;
    arrayList = (ArrayList<MyComposeObject>) Woosuite_Login.composeObjectslist;
//  System.out.println("arrayList2"+arrayList.size());      
    imageLoader=new ImageLoader(context);       
    for (int i = 0; i < this.getCount(); i++) {
        itemChecked.add(i, false); // initializes all items value with false
        }       
}   
@Override
public Context getContext() {
    // TODO Auto-generated method stub
    return mContext;
}
@Override
public int getCount() {
    // TODO Auto-generated method stub
    return arrayList.size();
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
    // TODO Auto-generated method stub
    ViewHolder holder;

    if (convertView == null) {
        LayoutInflater inflater = (LayoutInflater) mContext
                .getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
        convertView = inflater.inflate(row, null);
        holder = new ViewHolder();
        convertView.setTag(holder);
    } else
        holder = (ViewHolder) convertView.getTag();

    holder.userimage_ImageView=(ImageView) convertView.findViewById(R.id.imageView666);
    holder.username_TextView=(TextView) convertView.findViewById(R.id.textView666);
    holder.checkBox=(CheckBox) convertView.findViewById(R.id.checkBox666);
    holder.radioButton=(RadioButton) convertView.findViewById(R.id.radio666);

        holder.checkBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                // TODO Auto-generated method stub

                if(isChecked){                                                                  
                    itemChecked.set(position, true);

                    selected_profileid.add(arrayList.get(position).getCom_profileId());
                    System.out.println("add selected_profileid "+selected_profileid);

                    selected_profiletype.add(arrayList.get(position).getCom_profileType());
                    System.out.println("add selected_profiletype.size(); "+selected_profiletype);

                }else{

                    selected_profiletype.remove(arrayList.get(mposition).getCom_profileType());
                    System.out.println("remove selected_profileid "+selected_profileid);

                    selected_profileid.remove(arrayList.get(mposition).getCom_profileId());
                    System.out.println("remove selected_profiletype.size(); "+selected_profiletype);
                }
            }
        });     

    if(arrayList.get(position).getCom_ProfileImgUrl()!=null){                       
        imageLoader.DisplayImage(arrayList.get(position).getCom_ProfileImgUrl(), holder.userimage_ImageView);           

    }else{
        holder.userimage_ImageView.setImageResource(R.drawable.fb);
    }

    if(arrayList.get(position).getCom_ProfileName()!=null){
        holder.username_TextView.setText(arrayList.get(position).getCom_ProfileName());
    }

    holder.checkBox.setChecked(itemChecked.get(position));
    return convertView;
}

private static class ViewHolder {

    ImageView userimage_ImageView;
    TextView username_TextView;
    CheckBox checkBox;
    RadioButton radioButton;
}
}

Answer 1

请添加以下代码并再次运行并向我显示logcat输出：

 [...]
 @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            // TODO Auto-generated method stub
             if(position >= getCount()) {
                System.out.println("Error: position '"+position+"' is out of bounds in 'arrayList'");
                return;
             }
 [...]

防止重复列表条目：

if(!myList.contains(objectToInsert) {
    myList.add(objectToInsert);
}

Listview复选框数组索引超出范围的异常

1 个答案: