问题
I recently posted my Question for MultiSpinner values to choose Multiple values from Spinner dialog. I've done successfully with following class.
MultiSpinnerSearch.java
package com.example.multiplechoicelistwithfilter;
import java.util.List;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnCancelListener;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.util.SparseBooleanArray;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Spinner;
public class MultiSpinnerSearch extends Spinner implements OnCancelListener {
private List<Hello> items;
//private boolean[] selected;
private String defaultText;
private MultiSpinnerListener listener;
public MultiSpinnerSearch(Context context) {
super(context);
}
public MultiSpinnerSearch(Context arg0, AttributeSet arg1) {
super(arg0, arg1);
}
public MultiSpinnerSearch(Context arg0, AttributeSet arg1, int arg2) {
super(arg0, arg1, arg2);
}
@Override
public void onCancel(DialogInterface dialog) {
// refresh text on spinner
StringBuffer spinnerBuffer = new StringBuffer();
for (int i = 0; i < items.size(); i++) {
if (items.get(i).isSelected() == true) {
spinnerBuffer.append(items.get(i).getName());
spinnerBuffer.append(", ");
}
}
String spinnerText = "";
spinnerText = spinnerBuffer.toString();
if (spinnerText.length() > 2)
spinnerText = spinnerText.substring(0, spinnerText.length() - 2);
else
spinnerText = defaultText;
ArrayAdapter<String> adapter = new ArrayAdapter<String>(getContext(),
android.R.layout.simple_dropdown_item_1line,
new String[] { spinnerText });
setAdapter(adapter);
listener.onItemsSelected(items);
}
@Override
public boolean performClick() {
AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
builder.setTitle(defaultText);
LayoutInflater inflater = (LayoutInflater) getContext().getSystemService( Context.LAYOUT_INFLATER_SERVICE );
View view = inflater.inflate(R.layout.alert_dialog_listview_search, null);
builder.setView(view);
final ListView listView = (ListView) view.findViewById(R.id.alertSearchListView);
listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
final MyAdapter adapter = new MyAdapter(getContext(), items);
listView.setAdapter(adapter);
EditText editText = (EditText) view.findViewById(R.id.alertSearchEditText);
editText.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
adapter.getFilter().filter(s.toString());
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void afterTextChanged(Editable s) {
}
});
//builder.setMultiChoiceItems(items.toArray(new CharSequence[items.size()]), selected, this);
builder.setPositiveButton(android.R.string.ok,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
SparseBooleanArray sp = listView.getCheckedItemPositions();
for(int i=0;i<items.size();i++) {
items.get(i).setSelected(sp.get(i));
}
dialog.cancel();
}
});
builder.setOnCancelListener(this);
builder.show();
return true;
}
public void setItems(List<Hello> items, String allText, int position,
MultiSpinnerListener listener) {
this.items = items;
this.defaultText = allText;
this.listener = listener;
// all selected by default
//selected = new boolean[items.size()];
//for (int i = 0; i < selected.length; i++)
// selected[i] = false;
if(position != -1)
{
items.get(position).setSelected(true);
listener.onItemsSelected(items);
onCancel(null);
}
}
public interface MultiSpinnerListener {
public void onItemsSelected(List<Hello> items);
}
}
MyAdapter class:
package com.example.multiplechoicelistwithfilter;
import java.util.ArrayList;
import java.util.List;
import android.annotation.SuppressLint;
import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckedTextView;
import android.widget.Filter;
import android.widget.Filterable;
public class MyAdapter extends BaseAdapter implements Filterable {
List<Hello> arrayList;
List<Hello> mOriginalValues; // Original Values
LayoutInflater inflater;
public MyAdapter(Context context, List<Hello> arrayList) {
this.arrayList = arrayList;
inflater = LayoutInflater.from(context);
}
@Override
public int getCount() {
return arrayList.size();
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
private class ViewHolder {
CheckedTextView textView;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
if (convertView == null) {
holder = new ViewHolder();
convertView = inflater.inflate(android.R.layout.select_dialog_multichoice, null);
holder.textView = (CheckedTextView) convertView;
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.textView.setText(arrayList.get(position).getName());
holder.textView.setChecked(arrayList.get(position).isSelected());
return convertView;
}
@SuppressLint("DefaultLocale")
@Override
public Filter getFilter() {
Filter filter = new Filter() {
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint,FilterResults results) {
arrayList = (List<Hello>) results.values; // has the filtered values
notifyDataSetChanged(); // notifies the data with new filtered values
}
@Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults results = new FilterResults(); // Holds the results of a filtering operation in values
List<Hello> FilteredArrList = new ArrayList<Hello>();
if (mOriginalValues == null) {
mOriginalValues = new ArrayList<Hello>(arrayList); // saves the original data in mOriginalValues
}
/********
*
* If constraint(CharSequence that is received) is null returns the mOriginalValues(Original) values
* else does the Filtering and returns FilteredArrList(Filtered)
*
********/
if (constraint == null || constraint.length() == 0) {
// set the Original result to return
results.count = mOriginalValues.size();
results.values = mOriginalValues;
} else {
constraint = constraint.toString().toLowerCase();
for (int i = 0; i < mOriginalValues.size(); i++) {
Log.i("TAG", "" + mOriginalValues.get(i).getName() + " -> " + mOriginalValues.get(i).isSelected());
String data = mOriginalValues.get(i).getName();
if (data.toLowerCase().contains(constraint.toString())) {
FilteredArrList.add(mOriginalValues.get(i));
}
}
// set the Filtered result to return
results.count = FilteredArrList.size();
results.values = FilteredArrList;
}
return results;
}
};
return filter;
}
}
I am getting output successfully as below, but in first image suppose i am select first two image and then filtering word 'ball' it gives me filtered result with selected checkbox as before.
You can see that first two items not selected before but it shows selected while filtering.
I am stuck with this silly problem since last couple of hours. Help me.
Your help would be appreciated. Thanks.
回答1:
I have created my own lib and uploaded on Git:
May It will help you all:
MultiSelectSpinner is allows to Select Multiple Items from Spinner and SEARCH/ FILTER Item from Spinner Items.
public class MultiSpinnerSearch extends Spinner implements OnCancelListener {
private List<KeyPairBoolData> items;
//private boolean[] selected;
private String defaultText;
private MultiSpinnerSearchListener listener;
MyAdapter adapter;
public MultiSpinnerSearch(Context context) {
super(context);
}
public MultiSpinnerSearch(Context arg0, AttributeSet arg1) {
super(arg0, arg1);
}
public MultiSpinnerSearch(Context arg0, AttributeSet arg1, int arg2) {
super(arg0, arg1, arg2);
}
@Override
public void onCancel(DialogInterface dialog) {
// refresh text on spinner
StringBuffer spinnerBuffer = new StringBuffer();
for (int i = 0; i < items.size(); i++) {
if (items.get(i).isSelected() == true) {
spinnerBuffer.append(items.get(i).getName());
spinnerBuffer.append(", ");
}
}
String spinnerText = "";
spinnerText = spinnerBuffer.toString();
if (spinnerText.length() > 2)
spinnerText = spinnerText.substring(0, spinnerText.length() - 2);
else
spinnerText = defaultText;
ArrayAdapter<String> adapterSpinner = new ArrayAdapter<String>(getContext(),
R.layout.textview_for_spinner,
new String[] { spinnerText });
setAdapter(adapterSpinner);
if(adapter != null)
adapter.notifyDataSetChanged();
listener.onItemsSelected(items);
}
@Override
public boolean performClick() {
AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
builder.setTitle(defaultText);
LayoutInflater inflater = (LayoutInflater) getContext().getSystemService( Context.LAYOUT_INFLATER_SERVICE );
View view = inflater.inflate(R.layout.alert_dialog_listview_search, null);
builder.setView(view);
final ListView listView = (ListView) view.findViewById(R.id.alertSearchListView);
listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
listView.setFastScrollEnabled(false);
adapter = new MyAdapter(getContext(), items);
listView.setAdapter(adapter);
EditText editText = (EditText) view.findViewById(R.id.alertSearchEditText);
editText.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
adapter.getFilter().filter(s.toString());
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void afterTextChanged(Editable s) {
}
});
//builder.setMultiChoiceItems(items.toArray(new CharSequence[items.size()]), selected, this);
builder.setPositiveButton(android.R.string.ok,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// items = (ArrayList<KeyPairBoolData>) adapter.arrayList;
Log.i("TAG", " ITEMS : " + items.size() );
dialog.cancel();
}
});
builder.setOnCancelListener(this);
builder.show();
return true;
}
public void setItems(List<KeyPairBoolData> items, String allText, int position,
MultiSpinnerSearchListener listener) {
this.items = items;
this.defaultText = allText;
this.listener = listener;
ArrayAdapter<String> adapterSpinner = new ArrayAdapter<String>(getContext(),
R.layout.textview_for_spinner,
new String[] { defaultText });
setAdapter(adapterSpinner);
if(position != -1)
{
items.get(position).setSelected(true);
//listener.onItemsSelected(items);
onCancel(null);
}
}
public interface MultiSpinnerSearchListener {
public void onItemsSelected(List<KeyPairBoolData> items);
}
// // Adapter Class
public class MyAdapter extends BaseAdapter implements Filterable {
List<KeyPairBoolData> arrayList;
List<KeyPairBoolData> mOriginalValues; // Original Values
LayoutInflater inflater;
public MyAdapter(Context context, List<KeyPairBoolData> arrayList) {
this.arrayList = arrayList;
inflater = LayoutInflater.from(context);
}
@Override
public int getCount() {
return arrayList.size();
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
private class ViewHolder {
TextView textView;
CheckBox checkBox;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
if (convertView == null) {
holder = new ViewHolder();
convertView = inflater.inflate(R.layout.alert_dialog_listview_search_subview, null);
holder.textView = (TextView) convertView.findViewById(R.id.alertTextView);
holder.checkBox = (CheckBox) convertView.findViewById(R.id.alertCheckbox);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
final KeyPairBoolData data = arrayList.get(position);
holder.textView.setText(data.getName());
holder.checkBox.setChecked(data.isSelected());
convertView.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
ViewHolder temp = (ViewHolder) v.getTag();
temp.checkBox.setChecked(!temp.checkBox.isChecked());
int len = arrayList.size();
for (int i = 0; i < len; i++)
{
if (i == position)
{
data.setSelected(!data.isSelected());
Log.i("TAG", "On Click Selected : " + data.getName() + " : " + data.isSelected());
break;
}
}
}
});
holder.checkBox.setTag(holder);
return convertView;
}
@SuppressLint("DefaultLocale")
@Override
public Filter getFilter() {
Filter filter = new Filter() {
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint,FilterResults results) {
arrayList = (List<KeyPairBoolData>) results.values; // has the filtered values
notifyDataSetChanged(); // notifies the data with new filtered values
}
@Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults results = new FilterResults(); // Holds the results of a filtering operation in values
List<KeyPairBoolData> FilteredArrList = new ArrayList<KeyPairBoolData>();
if (mOriginalValues == null) {
mOriginalValues = new ArrayList<KeyPairBoolData>(arrayList); // saves the original data in mOriginalValues
}
/********
*
* If constraint(CharSequence that is received) is null returns the mOriginalValues(Original) values
* else does the Filtering and returns FilteredArrList(Filtered)
*
********/
if (constraint == null || constraint.length() == 0) {
// set the Original result to return
results.count = mOriginalValues.size();
results.values = mOriginalValues;
} else {
constraint = constraint.toString().toLowerCase();
for (int i = 0; i < mOriginalValues.size(); i++) {
Log.i("TAG", "Filter : " + mOriginalValues.get(i).getName() + " -> " + mOriginalValues.get(i).isSelected());
String data = mOriginalValues.get(i).getName();
if (data.toLowerCase().contains(constraint.toString())) {
FilteredArrList.add(mOriginalValues.get(i));
}
}
// set the Filtered result to return
results.count = FilteredArrList.size();
results.values = FilteredArrList;
}
return results;
}
};
return filter;
}
}
}
Thanks :) Keep Sharing :)
来源：https://stackoverflow.com/questions/30731983/android-change-checkbox-checked-value-in-listview-when-getfilter-called