现在不知道错误在哪里。
现象：输入无效搜索内容，例如：3/5/9#！￥
列表闪显北京市，之后就正常了，而且并不是每次都出现，如图所示
代码应该是出现在这个函数里面
etInput.setOnEditorActionListener(new TextView.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView v, int actionId,
KeyEvent event) {
if (actionId == EditorInfo.IME_ACTION_SEARCH) {
try {
if (!etInput.getText().toString().equals("")) {
if (cityList != null) {
adapter = new FilterAdapter(getActivity(),
cityList);
if (adapter != null) {
adapter.getFilter().filter(
etInput.getText().toString());
adapter.setFilterType(FilterAdapter.FILTER_BODY);
}
}
}
hideInputWindow();
} catch (Exception e) {
}
}
return false;
}
});
然后下一个FilterAdapter.java
public class FilterAdapter extends BaseAdapter implements Filterable {
public static final int FILTER_HEAD = 0;// 从头开始过滤
public static final int FILTER_FOOT = 1;// 从后开始过滤
public static final int FILTER_BODY = 2;// 任意过滤
private Context context;
private List<String> list = new ArrayList<String>();
private List<String> spylist = new ArrayList<String>();
private boolean needSort = false;// 是否需要排序
private ArrayFilter filter;// 过滤器
private int filterType = FILTER_BODY;// 过滤类别，默认从头开始过滤
private Event mFilterFinish = new Event(EventType.FILTER_CITY_FINISH);
public FilterAdapter(Context context, List<Map<String, Object>> obj) {
this.context = context;
for (int i = 0; i < obj.size(); i++) {
this.list.add(obj.get(i).get("name").toString());
this.spylist.add(obj.get(i).get("spy").toString());
}
}
// 返回false后Item间的分割线消失
@Override
public boolean areAllItemsEnabled() {
return false;
}
// 带有“－”的不可操作，通常和areAllItemsEnabled一起使用。
@Override
public boolean isEnabled(int position) {
if( position >= list.size())
{
return false;
}
return !list.get(position).startsWith("-");// 此处根据需求灵活处理
}
public int getCount() {
return list.size();
}
public Object getItem(int position) {
return list.get(position);
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
LinearLayout layout;
if (convertView == null) {
layout = (LinearLayout) LayoutInflater.from(context).inflate(
R.layout.mode_city_filter_list, parent, false);
} else {
layout = (LinearLayout) convertView;
}
TextView tv = (TextView)layout.findViewById(R.id.item_cityname);
if(tv != null)
tv.setText(list.get(position));
return layout;
}
public List<String> getList() {
return list;
}
public void setList(List<String> list) {
this.list = list;
}
public boolean isNeedSort() {
return needSort;
}
public void setNeedSort(boolean needSort) {
this.needSort = needSort;
}
private List<String> dosort(List<String> list) {
Collections.sort(list, comparator);
return list;
}
private Comparator<String> comparator = new Comparator<String>() {
private final Collator collator = Collator.getInstance();
public int compare(String s1, String s2) {
return collator.compare(s1, s2);
}
};
@Override
public Filter getFilter() {
// TODO Auto-generated method stub
if (filter == null) {
filter = new ArrayFilter();
}
return filter;
}
public int getFilterType() {
return filterType;
}
public void setFilterType(int filterType) {
this.filterType = filterType;
}
private class ArrayFilter extends Filter {
@Override
protected FilterResults performFiltering(CharSequence prefix) {
// TODO Auto-generated method stub
FilterResults results = new FilterResults();
if (prefix == null || prefix.length() == 0) {// 没有过滤符就不过滤
// new
// ArrayList<String>()表示让ListView一开始的时候什么都没有,而不是全部显示到ListView中
// new ArrayList<String>(list)表示一开始就让Item全部显示到ListView中
ArrayList<String> l = new ArrayList<String>(list);
results.values = l;
results.count = l.size();
} else {
String prefixString = prefix.toString().toUpperCase();
Log.i("FilterAdapter", "prefixString = " + prefixString);
final ArrayList<String> values = new ArrayList<String>(list);
final int count = values.size();
ArrayList<String> newValues = new ArrayList<String>(list);
for (int i = 0; i < count; i++) {
final String value = values.get(i);// 原始字符串
final String valueText = value.toString().toLowerCase();
final String spy = spylist.get(i).toString();
Log.i("FilterAdapter", "value = " + value);
Log.i("FilterAdapter", "valueText = " + valueText);
Log.i("FilterAdapter", "spy = " + spy);
// 匹配核心代码，需要自己实现，这里只提供了基本的过滤类型
switch (filterType) {
case FILTER_HEAD:
if (!valueText.startsWith(prefixString)) {// 过滤掉不需要的项
newValues.remove(value);
Log.i("FilterAdapter", "remove FILTER_HEAD " + value + ",lenght = " + newValues.size());
}
break;
case FILTER_FOOT:
if (!valueText.endsWith(prefixString)) {// 过滤掉不需要的项
newValues.remove(value);
Log.i("FilterAdapter", "remove FILTER_FOOT " + value + ",lenght = " + newValues.size());
}
break;
case FILTER_BODY:
if (spy.indexOf(prefixString) == -1 && valueText.indexOf(prefixString) == -1) {
newValues.remove(value);
Log.i("FilterAdapter", "remove FILTER_BODY " + value + ",lenght = " + newValues.size());
} /*else if (valueText.indexOf(prefixString) != -1) {// 过滤掉不需要的项
newValues.add(value);
Log.i("FilterAdapter", "add FILTER_BODY valueText " + value + ",lenght = " + newValues.size());
}*/
break;
default:
break;
}
Log.i("FilterAdapter", "newValues.size() = " + newValues.size());
}
results.values = newValues;
results.count = newValues.size();
Log.i("FilterAdapter", "newValues.size() = " + newValues.size() +", results.count = " + results.count);
}
return results;
}
@Override
protected void publishResults(CharSequence constraint,
FilterResults results) {
// TODO Auto-generated method stub
list = (List<String>) results.values;
/*if (results.count > 0) {
notifyDataSetChanged();
} else {
notifyDataSetInvalidated();
}*/
EventManager.trigger(mFilterFinish);
}
}
}
