现象:listview 中,如果有10项,其中手机屏幕显示1-6项,其余的7-10项在屏幕中不可见,得向下滚动后才能看到,这个时候,如果选中1、2项,再滚动到7-10项,之后再滚动回来1-6项,就发现1、2项并未被选中。
解决方法: 编写自定义的Adapter
public class TestAdapter extends ArrayAdapter<String> { private int resource; private LayoutInflater inflater; private boolean[] checks; //用于保存checkBox的选择状态 public TestAdapter(Context context, int resource, List<String> list) { super(context, resource, list); checks = new boolean[list.size()]; this.resource = resource; inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); } @Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder holder = null; if(convertView == null){ convertView = inflater.inflate(resource, null); holder = new ViewHolder(); holder.title = (TextView) convertView.findViewById(R.id.title); holder.checkBox = (CheckBox) convertView.findViewById(R.id.checkBox); convertView.setTag(holder); }else { holder = (ViewHolder) convertView.getTag(); } holder.title.setText(getItem(position)); final int pos = position; //pos必须声明为final holder.checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener(){ @Override public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) { checks[pos] = isChecked; }}); holder.checkBox.setChecked(checks[pos]); return convertView; } static class ViewHolder { TextView title; CheckBox checkBox; } }