Diacríticos / caracteres internacionales en AutoCompleteTextView

Tengo una lista (matriz)

Car Something Šibica Čavao Cavao 

¿Hay una manera de "forzar" AutoCompleteTextView así que si el tipo del usuario en la letra "c" demostraría

 Car Čavao Cavao 

Por lo que mostraría carta estándar y carta internacional (C y Č / Ć, S y Š, Z y Ž, D y Đ).

Utilice esta clase como ArrayAdapter (en este caso es para HR pero puede ser para cualquier carácter).

 /* * Copyright (C) 2006 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /* * Changes for Croatian language done by Stevica Kuharski, IT4U * Web: http://www.it4u.com.hr/en * E-mail: [email protected] */ 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.Filter; import android.widget.Filterable; import android.widget.TextView; import java.util.ArrayList; import java.util.Arrays; import java.util.List; import java.util.Comparator; import java.util.Collections; /** * A ListAdapter that manages a ListView backed by an array of arbitrary * objects. By default this class expects that the provided resource id references * a single TextView. If you want to use a more complex layout, use the constructors that * also takes a field id. That field id should reference a TextView in the larger layout * resource. * * However the TextView is referenced, it will be filled with the toString() of each object in * the array. You can add lists or arrays of custom objects. Override the toString() method * of your objects to determine what text will be displayed for the item in the list. * * To use something other than TextViews for the array display, for instance, ImageViews, * or to have some of data besides toString() results fill the views, * override {@link #getView(int, View, ViewGroup)} to return the type of view you want. */ public class HRArrayAdapter<T> extends BaseAdapter implements Filterable { /** * Contains the list of objects that represent the data of this ArrayAdapter. * The content of this list is referred to as "the array" in the documentation. */ private List<T> mObjects; /** * Lock used to modify the content of {@link #mObjects}. Any write operation * performed on the array should be synchronized on this lock. This lock is also * used by the filter (see {@link #getFilter()} to make a synchronized copy of * the original array of data. */ private final Object mLock = new Object(); /** * The resource indicating what views to inflate to display the content of this * array adapter. */ private int mResource; /** * The resource indicating what views to inflate to display the content of this * array adapter in a drop down widget. */ private int mDropDownResource; /** * If the inflated resource is not a TextView, {@link #mFieldId} is used to find * a TextView inside the inflated views hierarchy. This field must contain the * identifier that matches the one defined in the resource file. */ private int mFieldId = 0; /** * Indicates whether or not {@link #notifyDataSetChanged()} must be called whenever * {@link #mObjects} is modified. */ private boolean mNotifyOnChange = true; private Context mContext; private ArrayList<T> mOriginalValues; private HRArrayFilter mFilter; private LayoutInflater mInflater; /** * Constructor * * @param context The current context. * @param textViewResourceId The resource ID for a layout file containing a TextView to use when * instantiating views. */ public HRArrayAdapter(Context context, int textViewResourceId) { init(context, textViewResourceId, 0, new ArrayList<T>()); } /** * Constructor * * @param context The current context. * @param resource The resource ID for a layout file containing a layout to use when * instantiating views. * @param textViewResourceId The id of the TextView within the layout resource to be populated */ public HRArrayAdapter(Context context, int resource, int textViewResourceId) { init(context, resource, textViewResourceId, new ArrayList<T>()); } /** * Constructor * * @param context The current context. * @param textViewResourceId The resource ID for a layout file containing a TextView to use when * instantiating views. * @param objects The objects to represent in the ListView. */ public HRArrayAdapter(Context context, int textViewResourceId, T[] objects) { init(context, textViewResourceId, 0, Arrays.asList(objects)); } /** * Constructor * * @param context The current context. * @param resource The resource ID for a layout file containing a layout to use when * instantiating views. * @param textViewResourceId The id of the TextView within the layout resource to be populated * @param objects The objects to represent in the ListView. */ public HRArrayAdapter(Context context, int resource, int textViewResourceId, T[] objects) { init(context, resource, textViewResourceId, Arrays.asList(objects)); } /** * Constructor * * @param context The current context. * @param textViewResourceId The resource ID for a layout file containing a TextView to use when * instantiating views. * @param objects The objects to represent in the ListView. */ public HRArrayAdapter(Context context, int textViewResourceId, List<T> objects) { init(context, textViewResourceId, 0, objects); } /** * Constructor * * @param context The current context. * @param resource The resource ID for a layout file containing a layout to use when * instantiating views. * @param textViewResourceId The id of the TextView within the layout resource to be populated * @param objects The objects to represent in the ListView. */ public HRArrayAdapter(Context context, int resource, int textViewResourceId, List<T> objects) { init(context, resource, textViewResourceId, objects); } /** * Adds the specified object at the end of the array. * * @param object The object to add at the end of the array. */ public void add(T object) { if (mOriginalValues != null) { synchronized (mLock) { mOriginalValues.add(object); if (mNotifyOnChange) notifyDataSetChanged(); } } else { mObjects.add(object); if (mNotifyOnChange) notifyDataSetChanged(); } } /** * Inserts the specified object at the specified index in the array. * * @param object The object to insert into the array. * @param index The index at which the object must be inserted. */ public void insert(T object, int index) { if (mOriginalValues != null) { synchronized (mLock) { mOriginalValues.add(index, object); if (mNotifyOnChange) notifyDataSetChanged(); } } else { mObjects.add(index, object); if (mNotifyOnChange) notifyDataSetChanged(); } } /** * Removes the specified object from the array. * * @param object The object to remove. */ public void remove(T object) { if (mOriginalValues != null) { synchronized (mLock) { mOriginalValues.remove(object); } } else { mObjects.remove(object); } if (mNotifyOnChange) notifyDataSetChanged(); } /** * Remove all elements from the list. */ public void clear() { if (mOriginalValues != null) { synchronized (mLock) { mOriginalValues.clear(); } } else { mObjects.clear(); } if (mNotifyOnChange) notifyDataSetChanged(); } /** * Sorts the content of this adapter using the specified comparator. * * @param comparator The comparator used to sort the objects contained * in this adapter. */ public void sort(Comparator<? super T> comparator) { Collections.sort(mObjects, comparator); if (mNotifyOnChange) notifyDataSetChanged(); } /** * {@inheritDoc} */ @Override public void notifyDataSetChanged() { super.notifyDataSetChanged(); mNotifyOnChange = true; } /** * Control whether methods that change the list ({@link #add}, * {@link #insert}, {@link #remove}, {@link #clear}) automatically call * {@link #notifyDataSetChanged}. If set to false, caller must * manually call notifyDataSetChanged() to have the changes * reflected in the attached view. * * The default is true, and calling notifyDataSetChanged() * resets the flag to true. * * @param notifyOnChange if true, modifications to the list will * automatically call {@link * #notifyDataSetChanged} */ public void setNotifyOnChange(boolean notifyOnChange) { mNotifyOnChange = notifyOnChange; } private void init(Context context, int resource, int textViewResourceId, List<T> objects) { mContext = context; mInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); mResource = mDropDownResource = resource; mObjects = objects; mFieldId = textViewResourceId; } /** * Returns the context associated with this array adapter. The context is used * to create views from the resource passed to the constructor. * * @return The Context associated with this adapter. */ public Context getContext() { return mContext; } /** * {@inheritDoc} */ public int getCount() { return mObjects.size(); } /** * {@inheritDoc} */ public T getItem(int position) { return mObjects.get(position); } /** * Returns the position of the specified item in the array. * * @param item The item to retrieve the position of. * * @return The position of the specified item. */ public int getPosition(T item) { return mObjects.indexOf(item); } /** * {@inheritDoc} */ public long getItemId(int position) { return position; } /** * {@inheritDoc} */ public View getView(int position, View convertView, ViewGroup parent) { return createViewFromResource(position, convertView, parent, mResource); } private View createViewFromResource(int position, View convertView, ViewGroup parent, int resource) { View view; TextView text; if (convertView == null) { view = mInflater.inflate(resource, parent, false); } else { view = convertView; } try { if (mFieldId == 0) { // If no custom field is assigned, assume the whole resource is a TextView text = (TextView) view; } else { // Otherwise, find the TextView field within the layout text = (TextView) view.findViewById(mFieldId); } } catch (ClassCastException e) { Log.e("ArrayAdapter", "You must supply a resource ID for a TextView"); throw new IllegalStateException( "ArrayAdapter requires the resource ID to be a TextView", e); } text.setText(getItem(position).toString()); return view; } /** * <p>Sets the layout resource to create the drop down views.</p> * * @param resource the layout resource defining the drop down views * @see #getDropDownView(int, android.view.View, android.view.ViewGroup) */ public void setDropDownViewResource(int resource) { this.mDropDownResource = resource; } /** * {@inheritDoc} */ @Override public View getDropDownView(int position, View convertView, ViewGroup parent) { return createViewFromResource(position, convertView, parent, mDropDownResource); } /** * Creates a new ArrayAdapter from external resources. The content of the array is * obtained through {@link android.content.res.Resources#getTextArray(int)}. * * @param context The application's environment. * @param textArrayResId The identifier of the array to use as the data source. * @param textViewResId The identifier of the layout used to create views. * * @return An ArrayAdapter<CharSequence>. */ public static HRArrayAdapter<CharSequence> createFromResource(Context context, int textArrayResId, int textViewResId) { CharSequence[] strings = context.getResources().getTextArray(textArrayResId); return new HRArrayAdapter<CharSequence>(context, textViewResId, strings); } /** * {@inheritDoc} */ public HRArrayFilter getFilter() { if (mFilter == null) { mFilter = new HRArrayFilter(); } return mFilter; } /** * <p>An array filter constrains the content of the array adapter with * a prefix. Each item that does not start with the supplied prefix * is removed from the list.</p> */ private class HRArrayFilter extends Filter { @Override protected FilterResults performFiltering(CharSequence prefix) { FilterResults results = new FilterResults(); if (mOriginalValues == null) { synchronized (mLock) { mOriginalValues = new ArrayList<T>(mObjects); } } if (prefix == null || prefix.length() == 0) { synchronized (mLock) { ArrayList<T> list = new ArrayList<T>(mOriginalValues); results.values = list; results.count = list.size(); } } else { String prefixString = prefix.toString().toLowerCase(); ArrayList<T> values = mOriginalValues; final int count = values.size(); final ArrayList<T> newValues = new ArrayList<T>(count); final ArrayList<String> noPalatals = new ArrayList<String>(); for (int i = 0; i < count; i++) { final T value = values.get(i); final String valueText = value.toString().toLowerCase(); String valueTextNoPalatals = toNoPalatals(valueText); String prefixStringNoPalatals = toNoPalatals(prefixString); //Log.d( "DATA NORMAL", valueText + ", " + prefixString ); //Log.d( "DATA NO PALATALS", valueTextNoPalatals + ", " + prefixStringNoPalatals ); // First match against the whole, non-splitted value if (valueText.startsWith(prefixString) || valueTextNoPalatals.startsWith(prefixStringNoPalatals)) { newValues.add(value); } else { final String[] words = valueText.split(" "); final int wordCount = words.length; for (int k = 0; k < wordCount; k++) { if (words[k].startsWith(prefixString)) { newValues.add(value); break; } } } } results.values = newValues; results.count = newValues.size(); } return results; } @Override protected void publishResults(CharSequence constraint, FilterResults results) { //noinspection unchecked mObjects = (List<T>) results.values; if (results.count > 0) { notifyDataSetChanged(); } else { notifyDataSetInvalidated(); } } private String toNoPalatals( String original ) { original = original.replace("Č", "C"); original = original.replace("Ć", "C"); original = original.replace("Š ", "S"); original = original.replace("Đ", "D"); original = original.replace("Ž", "Z"); original = original.replace("č", "c"); original = original.replace("ć", "c"); original = original.replace("š", "s"); original = original.replace("đ", "d"); original = original.replace("ž", "z"); return original; } } } 

Cuando comparas tus cadenas con la entrada de los usuarios, tal vez quieras usar un Collator …

http://download.oracle.com/javase/1.5.0/docs/api/java/text/Collator.html

… llamar a getInstance (), establecer una intensidad apropiada y usar los métodos compare o equal para encontrar lo que coincide con la entrada del usuario.

Para hacer la vida de las personas más fácil, aquí es lo que necesita para añadir a la respuesta correcta @ svenkapudija para la compatibilidad de caracteres acentuado francés. Esto se hizo a través de Excel en menos de 40 segundos

 original = original.replace("À ", "A"); original = original.replace("à ", "a"); original = original.replace(" ", "A"); original = original.replace("â ", "a"); original = original.replace("Æ", "AE"); original = original.replace("æ", "ae"); original = original.replace("Ç", "C"); original = original.replace("ç", "c"); original = original.replace("È ", "E"); original = original.replace("è", "e"); original = original.replace("É ", "E"); original = original.replace("é", "e"); original = original.replace("Ê ", "E"); original = original.replace("ê ", "e"); original = original.replace("Ë ", "E"); original = original.replace("ë ", "e"); original = original.replace("Î ", "I"); original = original.replace("î ", "i"); original = original.replace("Ï ", "I"); original = original.replace("ï ", "i"); original = original.replace("Ô", "O"); original = original.replace("ô", "o"); original = original.replace("Œ", "OE"); original = original.replace("œ", "oe"); original = original.replace("Ù", "U"); original = original.replace("ù", "u"); original = original.replace("Û", "U"); original = original.replace("û", "u"); original = original.replace("Ü", "U"); original = original.replace("ü", "u"); 

Para la gente de polonia;):

  original = original.replace("Ą", "A"); original = original.replace("Ć", "C"); original = original.replace("Ę", "E"); original = original.replace("Ł", "L"); original = original.replace("Ń", "N"); original = original.replace("Ó", "O"); original = original.replace("Ś ", "S"); original = original.replace("Ź", "Z"); original = original.replace("Ż", "Z"); original = original.replace("ą", "a"); original = original.replace("ć", "c"); original = original.replace("ę", "e"); original = original.replace("ł", "l"); original = original.replace("ń", "n"); original = original.replace("ó", "o"); original = original.replace("ś", "s"); original = original.replace("ź", "z"); original = original.replace("ż", "z"); original = original.replace("ž", "z"); 

La respuesta de svenkapudija es buena … La utilicé y modificé ligeramente sólo para asegurarme de que el filtro diacrítico funcionaría para otra palabra que no sea la primera

  final String[] words = valText.split(" "); for (String word : words) { if (word.startsWith(prefixString)||toNoPalatals(word).startsWith(prefixStringNoPalatals)) { newValues.add(value); break; } } } 

También, esto es para la gente de la República Checa 😉

  original = original.replace("Ě", "E"); original = original.replace("Š", "S"); original = original.replace("Č", "C"); original = original.replace("Ř", "R"); original = original.replace("Ž", "Z"); original = original.replace("Ý", "Y"); original = original.replace("Á", "A"); original = original.replace("Í", "I"); original = original.replace("É", "E"); original = original.replace("Ú", "U"); original = original.replace("Ů", "U"); original = original.replace("Ď", "D"); original = original.replace("Ť", "T"); original = original.replace("Ň", "N"); original = original.replace("ě", "e"); original = original.replace("š", "s"); original = original.replace("č", "c"); original = original.replace("ř", "r"); original = original.replace("ž", "z"); original = original.replace("ý", "y"); original = original.replace("á", "a"); original = original.replace("í", "i"); original = original.replace("é", "e"); original = original.replace("ú", "u"); original = original.replace("ů", "u"); original = original.replace("ď", "d"); original = original.replace("ť", "t"); original = original.replace("ň", "n"); 

Si necesita rodar su propia solución, debe considerar el uso de plegado de acento , una técnica para transformar cadenas acentuadas Unicode en texto ASCII. Podrías generar versiones ASCII de todas las cadenas de tu matriz y hacer coincidir la consulta parcial del usuario con esa matriz.

Para el idioma eslovaco:

  original = original.replace("Á", "A"); original = original.replace("Ä", "A"); original = original.replace("Č", "C"); original = original.replace("Ď", "D"); original = original.replace("É", "E"); original = original.replace("Í", "I"); original = original.replace("Ĺ", "L"); original = original.replace("Ľ", "L"); original = original.replace("Ň", "N"); original = original.replace("Ó", "O"); original = original.replace("Ô", "O"); original = original.replace("Ŕ", "R"); original = original.replace("Š", "S"); original = original.replace("Ť", "T"); original = original.replace("Ú", "U"); original = original.replace("Ý", "Y"); original = original.replace("Ž", "Z"); original = original.replace("á", "a"); original = original.replace("ä", "a"); original = original.replace("č", "c"); original = original.replace("ď", "d"); original = original.replace("é", "e"); original = original.replace("í", "i"); original = original.replace("ĺ", "l"); original = original.replace("ľ", "l"); original = original.replace("ň", "n"); original = original.replace("ó", "o"); original = original.replace("ô", "o"); original = original.replace("ŕ", "r"); original = original.replace("š", "s"); original = original.replace("ť", "t"); original = original.replace("ú", "u"); original = original.replace("ý", "y"); original = original.replace("ž", "z"); 
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