安卓 : Change CheckBox checked value in ListView when getFilter() called

Question

我最近posted我对 MultiSpinner 值的问题要从 Spinner 对话框中选择多个值。我已经成功完成了以下类(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 类:

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.

自从过去几个小时以来，我一直被这个愚蠢的问题所困扰。帮助我。

您的帮助将不胜感激。谢谢。

Answer 1

我已经创建了自己的库并上传到 Git:

希望对大家有帮助:

MultiSelectSpinner允许从微调器中选择多个项目和从微调器项目中选择SEARCH/FILTER项目。

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;
        }
    }
}

谢谢 :) 继续分享 :)