我有一个（数组）列表
Car
Something
Šibica
Čavao
Cavao
有没有办法“强制”AutoCompleteTextView所以如果用户输入字母“c”它将显示
Car
Čavao
Cavao
所以它会显示标准字母和国际字母（C和Č/Ć，S和Š，Z和Ž，D和Đ）。
将此类用作ArrayAdapter（在这种情况下，它用于HR，但它可以用于任何字符）。
/*
* 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;
}
}
}
当您将字符串与用户输入进行比较时，您可能希望使用Collator ...
http://download.oracle.com/javase/1.5.0/docs/api/java/text/Collator.html
...调用getInstance（），设置适当的强度，并使用compare或equals方法查找与用户输入匹配的内容。
为了让人们的生活更轻松，您需要通过@svenkapudija为法语重音字符兼容性添加正确的答案。这是通过excel在不到40秒的时间内完成的
original = original.replace("À ", "A");
original = original.replace("à ", "a");
original = original.replace("Â ", "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");
来自波兰的人;）：
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");
svenkapudija的答案是好的...我使用它并稍作修改，以确保变音符号过滤器可用于除第一个字以外的其他字符
final String[] words = valText.split(" ");
for (String word : words) {
if (word.startsWith(prefixString)||toNoPalatals(word).startsWith(prefixStringNoPalatals)) {
newValues.add(value);
break;
}
}
}
此外，这是为来自捷克共和国的人;-)
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");
如果您需要推出自己的解决方案，则应考虑使用accent-folding，这是一种将Unicode重音字符串转换为ASCII文本的技术。您可以生成数组中所有字符串的ASCII版本，并将用户的部分查询与该数组匹配。
对于斯洛伐克语：
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");
@svenkapudija的优秀答案可以使用java.text.Normalizer推广到大多数拉丁文脚本语言。在过滤器代码中，替换：
String valueTextNoPalatals = toNoPalatals(valueText);
String prefixStringNoPalatals = toNoPalatals(prefixString);
有：
String valueTextNoPalatals = Normalizer
.normalize(valueText, Normalizer.Form.NFD)
.replaceAll("[^\\p{ASCII}]", "")
.toLowerCase();
String prefixStringNoPalatals = Normalizer
.normalize(prefixString, Normalizer.Form.NFD)
.replaceAll("[^\\p{ASCII}]", "")
.toLowerCase();