我知道有大量的教程，之前有人问过这个问题，但是在学习了一些教程之后，特别是这个（教程），我一直在努力接近。列表过滤排序但滚动会导致强制关闭，它将结果放在顶部，但列表的长度停止，所以一旦我通过我的结果，我就会得到一个超出范围的错误，因为过滤后数组大小更小。我的代码低于任何帮助，非常感谢！
public class Holder {
public boolean checked;
public String name;
public String type;
public String number;
public Holder(boolean checked, String name, String type, String number) {
this.checked=checked;
this.name=name;
this.type=type;
this.number=number;
}
}
public class MyCustomAdapter extends ArrayAdapter<Holder> implements Filterable {
ArrayList<Holder> array;
LayoutInflater inflater2;
HolderFilter holderFilter;
public MyCustomAdapter(LayoutInflater inflater, Context context, int resource, int textViewResourceId, ArrayList<Holder> litem) {
super(context, resource, textViewResourceId, litem);
inflater2 = inflater;
array = litem;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
convertView = inflater2.inflate(R.layout.contactrow, null);
holder = new ViewHolder();
holder.checkBox = (CheckBox)convertView.findViewById(R.id.checkBox);
holder.name = (TextView)convertView.findViewById(R.id.recipient_name);
holder.type = (TextView)convertView.findViewById(R.id.recipient_type);
holder.number = (TextView)convertView.findViewById(R.id.recipient_number);
convertView.setTag(holder);
}else{
holder = (ViewHolder) convertView.getTag();
}
holder.checkBox.setOnClickListener(checkChange);
holder.checkBox.setChecked(holderarray.get(position).checked);
holder.checkBox.setTag(position);
holder.name.setText(holderarray.get(position).name);
holder.type.setText(types[Integer.valueOf(holderarray.get(position).type)]);
holder.number.setText(holderarray.get(position).number);
return convertView;
}
@Override
public Filter getFilter() {
if (holderFilter == null){
holderFilter = new HolderFilter();
}
return holderFilter;
}
private class HolderFilter extends Filter {
@Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults results = new FilterResults();
if (constraint == null || constraint.length() == 0) {
results.values = holderarray;
results.count = holderarray.size();
}else {
List<Holder> nHolderList = new ArrayList<Holder>();
for (Holder h : holderarray) {
if (h.name.toUpperCase().startsWith(constraint.toString().toUpperCase()) || h.number.startsWith(constraint.toString()))
nHolderList.add(h);
}
results.values = nHolderList;
results.count = nHolderList.size();
}
return results;
}
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint,FilterResults results) {
if (results.count == 0)
notifyDataSetInvalidated();
else {
holderarray = (ArrayList<Holder>) results.values;
notifyDataSetChanged();
}
}
}
}
static class ViewHolder {
CheckBox checkBox;
TextView name;
TextView type;
TextView number;
}
然后我对我的编辑文本执行以下操作以进行搜索
final EditText search = (EditText)findViewById(R.id.search);
search.addTextChangedListener(new TextWatcher(){
@Override
public void afterTextChanged(Editable arg0) {
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
aadapter.getFilter().filter(s.toString());
}
});
来自 logcat 的输出
E/EmbeddedLogger( 509): App crashed! Process: com.test.app
E/EmbeddedLogger( 509): App crashed! Package: com.test.app v1 (1.0)
E/AndroidRuntime(29973): FATAL EXCEPTION: main
E/AndroidRuntime(29973): java.lang.IndexOutOfBoundsException: Invalid index 4, size is 4
E/AndroidRuntime(29973): at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:251)
E/AndroidRuntime(29973): at java.util.ArrayList.get(ArrayList.java:304)
E/AndroidRuntime(29973): at com.test.app.sms.ContactPicker$MyCustomAdapter.getView(ContactPicker.java:197)
E/AndroidRuntime(29973): at android.widget.AbsListView.obtainView(AbsListView.java:2350)
E/AndroidRuntime(29973): at android.widget.ListView.makeAndAddView(ListView.java:1937)
E/AndroidRuntime(29973): at android.widget.ListView.fillDown(ListView.java:789)
E/AndroidRuntime(29973): at android.widget.ListView.fillGap(ListView.java:753)
E/AndroidRuntime(29973): at android.widget.AbsListView.trackMotionScroll(AbsListView.java:5259)
E/AndroidRuntime(29973): at android.widget.AbsListView.scrollIfNeeded(AbsListView.java:3323)
E/AndroidRuntime(29973): at android.widget.AbsListView.onTouchEvent(AbsListView.java:3609)
E/AndroidRuntime(29973): at android.widget.ListView.onTouchEvent(ListView.java:4027)
E/AndroidRuntime(29973): at android.view.View.dispatchTouchEvent(View.java:7175)
E/AndroidRuntime(29973): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2181)
E/AndroidRuntime(29973): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1916)
E/AndroidRuntime(29973): at android.widget.AbsListView.dispatchTouchEvent(AbsListView.java:6882)
E/AndroidRuntime(29973): at android.widget.ListView.dispatchTouchEvent(ListView.java:4441)
E/AndroidRuntime(29973): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2187)
E/AndroidRuntime(29973): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1930)
E/AndroidRuntime(29973): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2187)
E/AndroidRuntime(29973): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1930)
E/AndroidRuntime(29973): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2187)
E/AndroidRuntime(29973): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1930)
E/AndroidRuntime(29973): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2187)
E/AndroidRuntime(29973): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1930)
E/AndroidRuntime(29973): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2041)
E/AndroidRuntime(29973): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1495)
E/AndroidRuntime(29973): at android.app.Activity.dispatchTouchEvent(Activity.java:2454)
E/AndroidRuntime(29973): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1989)
E/AndroidRuntime(29973): at android.view.View.dispatchPointerEvent(View.java:7369)
E/AndroidRuntime(29973): at android.view.ViewRootImpl.deliverPointerEvent(ViewRootImpl.java:3549)
E/AndroidRuntime(29973): at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:3478)
E/AndroidRuntime(29973): at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:4587)
E/AndroidRuntime(29973): at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:4566)
E/AndroidRuntime(29973): at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:4658)
E/AndroidRuntime(29973): at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:184)
E/AndroidRuntime(29973): at android.view.InputEventReceiver.nativeConsumeBatchedInputEvents(Native Method)
E/AndroidRuntime(29973): at android.view.InputEventReceiver.consumeBatchedInputEvents(InputEventReceiver.java:171)
E/AndroidRuntime(29973): at android.view.ViewRootImpl.doConsumeBatchedInput(ViewRootImpl.java:4637)
E/AndroidRuntime(29973): at android.view.ViewRootImpl$ConsumeBatchedInputRunnable.run(ViewRootImpl.java:4686)
E/AndroidRuntime(29973): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
E/AndroidRuntime(29973): at android.view.Choreographer.doCallbacks(Choreographer.java:555)
E/AndroidRuntime(29973): at android.view.Choreographer.doFrame(Choreographer.java:523)
E/AndroidRuntime(29973): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
E/AndroidRuntime(29973): at android.os.Handler.handleCallback(Handler.java:615)
E/AndroidRuntime(29973): at android.os.Handler.dispatchMessage(Handler.java:92)
E/AndroidRuntime(29973): at android.os.Looper.loop(Looper.java:155)
E/AndroidRuntime(29973): at android.app.ActivityThread.main(ActivityThread.java:5485)
E/AndroidRuntime(29973): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime(29973): at java.lang.reflect.Method.invoke(Method.java:511)
E/AndroidRuntime(29973): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1028)
E/AndroidRuntime(29973): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:795)
E/AndroidRuntime(29973): at dalvik.system.NativeStart.main(Native Method)
E/EmbeddedLogger( 509): Application Label: Test App
W/ActivityManager( 509): Force finishing activity com.test.app/.sms.ContactPicker