我是 android 开发的菜鸟，我正在尝试实现搜索栏，以便我可以搜索列表视图。让搜索视图出现我没有问题。但是，当我在搜索视图中输入文本时，应用程序崩溃说存在“非法状态异常：我无法使用不可过滤的适配器调用 onTextChanged。我不明白为什么我会收到此错误，因为我的适配器类实现了可过滤。任何帮助非常感谢。
主要活动
public class StoresActivity extends SherlockActivity implements OnQueryTextListener {
ArrayList<HashMap<String, String>> storeList;
ListView list;
LazyAdapter adapter;
EditText inputSearch;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_stores);
storeList = new ArrayList<HashMap<String, String>>();
list=(ListView)findViewById(R.id.list);
SharedPreferences preferences = getSharedPreferences("Oleref", 2);
String employee = preferences.getString("employee", null);
ActionBar bar = getSupportActionBar();
bar.setDisplayHomeAsUpEnabled(true);
DownloadWebPageTask task = new DownloadWebPageTask();
task.execute(new String[] { "http://www.bigmoney.com="+ employee});
try {
storeList = task.get();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ExecutionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
adapter=new LazyAdapter(this, storeList);
list.setAdapter(adapter);
list.setItemsCanFocus(true);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
//Create the search view
SearchView searchView = new SearchView(getSupportActionBar().getThemedContext());
//list = getListView();
list.setTextFilterEnabled(true);
setupSearchView(searchView);
menu.add(0, 1, 1, "Search Text")
.setIcon(R.drawable.ic_launcher)
.setActionView(searchView)
.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM | MenuItem.SHOW_AS_ACTION_COLLAPSE_ACTION_VIEW);
return super.onCreateOptionsMenu(menu);
}
private void setupSearchView(SearchView mSearchView) {
mSearchView.setIconifiedByDefault(false);
mSearchView.setSubmitButtonEnabled(false);
mSearchView.setOnQueryTextListener(StoresActivity.this);
mSearchView.setQueryHint("Search Text");
}
@Override
public boolean onQueryTextChange(String newText) {
if (TextUtils.isEmpty(newText)) {
list.clearTextFilter();
} else {
list.setFilterText(newText);
}
return true;
}
@Override
public boolean onQueryTextSubmit(String query) {
return false;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId())
{
case android.R.id.home:
Intent chart = new Intent();
chart.setClass(StoresActivity.this, StoresActivity.class);
chart.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK);
StoresActivity.this.startActivity(chart);
return true;
case 2:
Intent chart2 = new Intent();
chart2.setClass(StoresActivity.this, WalkInActivity.class);
chart2.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK);
StoresActivity.this.startActivity(chart2);
return true;
}
return true;
}
}
适配器类
public class LazyAdapter extends BaseAdapter implements Filterable {
private Activity activity;
private ArrayList<HashMap<String, String>> data;
private static LayoutInflater inflater=null;
public String sn;
StoresActivity storesActivity;
HashMap<String, String> stores;
HashMap<String, String> storedata;
public LazyAdapter(Activity a, ArrayList<HashMap<String, String>> d) {
activity = a;
data=d;
inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return data.size();
}
@Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return arg0;
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
View vi=convertView;
if(convertView==null)
vi = inflater.inflate(R.layout.store_row, null);
TextView store = (TextView)vi.findViewById(R.id.storeText); // title
TextView store_num = (TextView)vi.findViewById(R.id.store_num); // artist name
TextView street = (TextView)vi.findViewById(R.id.address);
TextView city = (TextView)vi.findViewById(R.id.city);
Button newbutton=(Button)vi.findViewById(R.id.newser);
Button historybutton=(Button)vi.findViewById(R.id.history);
storedata = new HashMap<String, String>();
storedata = data.get(position);
newbutton.setTag(position);
newbutton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent chart = new Intent();
chart.setClass(v.getContext(), SectionActivity.class);
storedata = data.get((Integer)v.getTag());
sn = storedata.get("Store_Num");
String store = storedata.get("Store");
chart.putExtra("sn", sn);
chart.putExtra("store", store);
chart.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK);
v.getContext().startActivity(chart);
}
});
historybutton.setTag(position);
historybutton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent chart = new Intent();
chart.setClass(v.getContext(), HistoryList.class);
storedata = data.get((Integer)v.getTag());
sn = storedata.get("Store_Num");
String store = storedata.get("Store");
chart.putExtra("sn", sn);
chart.putExtra("store", store);
chart.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK);
v.getContext().startActivity(chart);
}
});
// Setting all values in listview
store.setText(storedata.get("Store"));
store_num.setText(storedata.get("Store_Num"));
street.setText(storedata.get("Address"));
city.setText(storedata.get("City") + " " + storedata.get("State") + " " + storedata.get("Zip"));
return vi;
}
public boolean onLoadClass(Class arg0) {
// TODO Auto-generated method stub
return false;
}
//Added for search BJR 5-16-2013
@Override
public android.widget.Filter getFilter() {
// TODO Auto-generated method stub
return null;
}
}