我在SherlockAction Bar的SearchView中实现了搜索过滤器。我实现了自定义过滤器,但是当我输入任何字母时出现了错误。
public class PlacesListAdapter extends ArrayAdapter<Place> implements
Filterable {
public Context mContext;
List<Place> mPlaces, orig;
public PlacesListAdapter(Context context, List<Place> places) {
super(context, R.layout.list_item_places, places);
// TODO Auto-generated constructor stub
this.mPlaces = places;
this.mContext = context;
orig = new ArrayList<Place>(places);
}
@Override
public Place getItem(int position) {
// TODO Auto-generated method stub
return mPlaces.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
LayoutInflater viewInflater;
viewInflater = LayoutInflater.from(getContext());
convertView = viewInflater.inflate(R.layout.list_item_places, null);
holder = new ViewHolder();
holder.placeTitle = (TextView) convertView
.findViewById(R.id.place_title);
holder.placeDistance = (TextView) convertView
.findViewById(R.id.place_distance);
holder.placeCategoryIcon = (ImageView) convertView
.findViewById(R.id.place_category_icon);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.placeTitle.setText(mPlaces.get(position).getPlaceName());
holder.placeDistance.setText(mPlaces.get(position).getPlaceDistance());
holder.placeCategoryIcon
.setImageResource(R.drawable.icon_category_hillstation);
// // Setting Alternative Row Colors
if (position % 2 == 0) {
convertView
.setBackgroundResource(R.drawable.list_view_places_row_1);
} else {
convertView
.setBackgroundResource(R.drawable.list_view_places_row_2);
}
return convertView;
}
static class ViewHolder {
TextView placeId;
TextView placeTitle;
TextView placeDistance;
ImageView placeCategoryIcon;
}
@Override
public Filter getFilter() {
// TODO Auto-generated method stub
return new PlaceFilter();
}
private class PlaceFilter extends Filter {
@Override
protected FilterResults performFiltering(CharSequence constraint){
FilterResults oReturn = new FilterResults();
ArrayList<Place> results = new ArrayList<Place>();
if (orig == null)
orig = mPlaces;
if (constraint != null) {
if (orig != null && orig.size() > 0) {
for (Place g : orig) {
if (g.getPlaceName()
.toLowerCase()
.startsWith(constraint.toString().toLowerCase()))
results.add(g);
}
}
oReturn.values = results;
}
return oReturn;
}
@Override
protected void publishResults(CharSequence constraint,
FilterResults results) {
mPlaces = (ArrayList<Place>) results.values;
notifyDataSetChanged();
}
}
}
错误
12-26 17:24:43.900: E/AndroidRuntime(18693): FATAL EXCEPTION: main
12-26 17:24:43.900: E/AndroidRuntime(18693): java.lang.IndexOutOfBoundsException: Invalid index 1, size is 1
12-26 17:24:43.900: E/AndroidRuntime(18693): at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:251)
12-26 17:24:43.900: E/AndroidRuntime(18693): at java.util.ArrayList.get(ArrayList.java:304)
12-26 17:24:43.900: E/AndroidRuntime(18693): at com.m7.nomad.PlacesListAdapter.getView(PlacesListAdapter.java:68)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.widget.AbsListView.obtainView(AbsListView.java:2193)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.widget.ListView.makeAndAddView(ListView.java:1774)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.widget.ListView.fillDown(ListView.java:672)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.widget.ListView.fillSpecific(ListView.java:1330)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.widget.ListView.layoutChildren(ListView.java:1603)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.widget.AbsListView.onLayout(AbsListView.java:2044)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.view.View.layout(View.java:11418)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.view.ViewGroup.layout(ViewGroup.java:4224)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.widget.RelativeLayout.onLayout(RelativeLayout.java:925)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.view.View.layout(View.java:11418)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.view.ViewGroup.layout(ViewGroup.java:4224)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.widget.FrameLayout.onLayout(FrameLayout.java:431)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.view.View.layout(View.java:11418)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.view.ViewGroup.layout(ViewGroup.java:4224)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1628)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1486)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.widget.LinearLayout.onLayout(LinearLayout.java:1399)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.view.View.layout(View.java:11418)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.view.ViewGroup.layout(ViewGroup.java:4224)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.widget.FrameLayout.onLayout(FrameLayout.java:431)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.view.View.layout(View.java:11418)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.view.ViewGroup.layout(ViewGroup.java:4224)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1628)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2585)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.os.Handler.dispatchMessage(Handler.java:99)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.os.Looper.loop(Looper.java:137)
12-26 17:24:43.900: E/AndroidRuntime(18693): at android.app.ActivityThread.main(ActivityThread.java:4507)
12-26 17:24:43.900: E/AndroidRuntime(18693): at java.lang.reflect.Method.invokeNative(Native Method)
12-26 17:24:43.900: E/AndroidRuntime(18693): at java.lang.reflect.Method.invoke(Method.java:511)
12-26 17:24:43.900: E/AndroidRuntime(18693): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790)
12-26 17:24:43.900: E/AndroidRuntime(18693): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)
12-26 17:24:43.900: E/AndroidRuntime(18693): at dalvik.system.NativeStart.main(Native Method)
错误
它指向的是
holder.placeTitle.setText(mPlaces.get(position).getPlaceName());
holder.placeTitle = (TextView) convertView.findViewById(R.id.place_title);
从getView
方法的if
部分移到else
部分。如果这样不起作用,那么就在if..else
后面放置。 - Pratik Sharma