翻译Hope you doing well.
I am stuck with the problem to implement Search functionality in MultiChoice Spinner, As i implemented Spinner with Multiple Choice in that used AlertDialog to display Multiple Choice Items.
There is two option for adding Filter Functionality:
- Add
EditTextin AlertDialog for search. - Add
ListViewandEditTextwith Custom Layout.
I've tried to implement both but didn't get complete solution.
In First Case I am getting an Layout Like following image (EditText displaying in Bottom) and also getting problem with
getFilter()which is not working withEditText:
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); EditText editText = (EditText) view.findViewById(R.id.alertSearchEditText); editText.addTextChangedListener(new TextWatcher() { @Override public void onTextChanged(CharSequence s, int start, int before, int count) { } @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) { dialog.cancel(); } }); builder.setOnCancelListener(this); builder.show();
In Second Case I have created custom layout for
AlertDialogas below, but in this case i can't able to remains values when second time opening dialog:
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center_horizontal" > <EditText android:id="@+id/alertSearchEditText" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_centerHorizontal="true" android:hint="@string/type_to_search" android:inputType="text" > <requestFocus /> </EditText> <ListView android:id="@+id/alertSearchListView" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_below="@+id/alertSearchEditText" android:layout_marginTop="5dp" android:cacheColorHint="@null" android:fadeScrollbars="true" android:fastScrollEnabled="true" android:textFilterEnabled="true" > </ListView> <TextView android:id="@+id/alertSearchNotFound" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_centerVertical="true" android:gravity="center" android:textAppearance="?android:attr/textAppearanceLarge" android:textColor="#EE0000" android:visibility="gone" /> </RelativeLayout>The following code is help me also for filtering ListView but don't know how to get and remains selected values.
MultiSpinner.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.content.DialogInterface.OnMultiChoiceClickListener; import android.text.Editable; import android.text.TextWatcher; import android.util.AttributeSet; import android.util.Log; 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 MultiSpinner extends Spinner implements OnMultiChoiceClickListener, OnCancelListener { private List<String> items; private boolean[] selected; private String defaultText; private MultiSpinnerListener listener; public MultiSpinner(Context context) { super(context); } public MultiSpinner(Context arg0, AttributeSet arg1) { super(arg0, arg1); } public MultiSpinner(Context arg0, AttributeSet arg1, int arg2) { super(arg0, arg1, arg2); } @Override public void onClick(DialogInterface dialog, int which, boolean isChecked) { if (isChecked) selected[which] = true; else selected[which] = false; } @Override public void onCancel(DialogInterface dialog) { // refresh text on spinner StringBuffer spinnerBuffer = new StringBuffer(); for (int i = 0; i < items.size(); i++) { if (selected[i] == true) { spinnerBuffer.append(items.get(i)); 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); setPrompt(spinnerText); // if(selected.length > 0) // listener.onItemsSelected(selected); } @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 ArrayAdapter<String> adapter = new ArrayAdapter<String>(getContext(), android.R.layout.simple_list_item_multiple_choice, 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(); String str=""; for(int i=0;i<sp.size();i++) { str += items.get(sp.indexOfKey(sp.keyAt(i))) + ","; } Log.i("TAG", "" + str ); dialog.cancel(); } }); builder.setOnCancelListener(this); builder.show(); return true; } public void setItems(List<String> 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) { selected[position] = true; listener.onItemsSelected(selected); onCancel(null); } } public interface MultiSpinnerListener { public void onItemsSelected(boolean[] selected); } // // Adapter Class }