演示
汉字转拼音
String pinyingStr = PinyinHelper.getShortPinyin(
String.valueOf(charSequence).toLowerCase().trim());获取分组Key（A,B,C….#)
@Nullable
private String getPingyingKey(String pinyinString) {
//将拼音字符串转换为大写拼音
if(pinyinString == null && pinyinString.length() == 0) return null;
//获取大写拼音字符串的第一个字符
char tempChar = pinyinString.charAt(0);
String key;
if (tempChar < 'a' || tempChar > 'z') {
key = "#";
} else {
key = String.valueOf(tempChar).toUpperCase();
}
return key;
}将无序的Map集合转换为按照字母排序的有序List
private List<Map.Entry<String, List<GoodFriendsInfo>>> mGroupingData = new ArrayList<>();
private List<Map.Entry<String, List<GoodFriendsInfo>>> mReserchGroupingData = new ArrayList<>();
/**
* 分组成Map集合
*/
public void toGropingTypeData(List<GoodFriendsInfo> list) {
List<GoodFriendsInfo> tempList;
Map<String, List<GoodFriendsInfo>> tempMap = new HashMap<>();
for (int i = 0; i < list.size(); i++) {
GoodFriendsInfo contactsModel1 = list.get(i);
if(contactsModel1 == null) continue;
String pinyinString = PinyinHelper.getShortPinyin(
contactsModel1.getName().toLowerCase().trim());
contactsModel1.setPyname(pinyinString);
String key = getPingyingKey(pinyinString);
if (key == null) continue;
tempList = tempMap.get(key);
if(tempList == null){
tempList = new ArrayList<>();
}
tempList.add(contactsModel1);
tempMap.put(key, tempList);
}
Set<Map.Entry<String, List<GoodFriendsInfo>>> setEntry = tempMap.entrySet();
mGroupingData = new ArrayList<>(setEntry);
Collections.sort(mGroupingData, new Comparator<Map.Entry<String, List<GoodFriendsInfo>>>() {
@Override
public int compare(Map.Entry<String, List<GoodFriendsInfo>> entry1, Map.Entry<String, List<GoodFriendsInfo>> entry2) {
if(entry1.getKey().equals("#")){
return 1;
}else if(entry2.getKey().equals("#")){
return -1;
}else{
Character c1 = entry1.getKey().charAt(0);
Character c2 = entry2.getKey().charAt(0);
return c1 - c2;
}
}
});
}监听输入事件，判断输入文字拼音首字母筛选列表
mReserchFriend.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence charSequence, int start, int count, int afte) {
}
@Override
public void onTextChanged(CharSequence charSequence, int start, int before, int count) {
if(charSequence.length() == 0){
mResearchPy = "";
mReserchGroupingData.clear();
bindview(mGroupingData);
}else {
String pinyingStr = PinyinHelper.getShortPinyin(
String.valueOf(charSequence).toLowerCase().trim());
String key = getPingyingKey(pinyingStr);
if(key == null || mResearchPy.equals(pinyingStr)) return;
mResearchPy = pinyingStr;
mReserchGroupingData.clear();
for (int i = 0; i< mGroupingData.size();i++){
if(mGroupingData.get(i).getKey().equals(key)){
Map> searchMap = new HashMap>();
List goodFriendsList = new ArrayList<>(mGroupingData.get(i).getValue());
for(int j = goodFriendsList.size() - 1; j >= 0; j--){
if(!goodFriendsList.get(j).getPyname().contains(mResearchPy)){
goodFriendsList.remove(j);
}
}
searchMap.put(key, goodFriendsList);
Set>> searchSet = searchMap.entrySet();
mReserchGroupingData.add(searchSet.iterator().next());
bindview(mReserchGroupingData);
break;
}
}
}
}
@Override
public void afterTextChanged(Editable editable) {
}
});
bindview(mGroupingData);
} 注释：
1，上面保存了上次搜索索引（mResearchPy），避免重复搜索。
2，注意删除集合中数据要重新创建集合不然会删除原始数据。
全部代码
package com.xl.undercover.view.user;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.os.Message;
import android.support.annotation.Nullable;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.EditText;
import android.widget.ExpandableListView;
import android.widget.TextView;
import com.xl.undercover.R;
import com.xl.undercover.model.entry.GoodFriendsInfo;
import com.xl.undercover.util.LogUtil;
import com.xl.undercover.view.base.BaseActivity;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import opensource.jpinyin.PinyinHelper;
/**
* Created by lijiyuan on 2017/2/13.
* 好友界面，可搜索
*/
public class GoodFriendsActivity extends BaseActivity {
private String mResearchPy = "";
private List mGoodFriendsData;
private ExpandableListView mExpandableListView;
private List>> mGroupingData = new ArrayList<>();
private List>> mReserchGroupingData = new ArrayList<>();
private EditText mReserchFriend;
@Override
protected void handleMessage(Message msg) { }
@Override
protected int getContentView() {
return R.layout.activity_goodfriends;
}
@Override
protected void initView() {
mExpandableListView = getView(R.id.listview_goodfriends);
mReserchFriend = getView(R.id.edit_reserch_friend);
mGoodFriendsData = getData();
toGropingTypeData(mGoodFriendsData);
mReserchFriend.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence charSequence, int start, int count, int afte) {
}
@Override
public void onTextChanged(CharSequence charSequence, int start, int before, int count) {
if(charSequence.length() == 0){
mResearchPy = "";
mReserchGroupingData.clear();
bindview(mGroupingData);
}else {
String pinyingStr = PinyinHelper.getShortPinyin(
String.valueOf(charSequence).toLowerCase().trim());
String key = getPingyingKey(pinyingStr);
if(key == null || mResearchPy.equals(pinyingStr)) return;
mResearchPy = pinyingStr;
mReserchGroupingData.clear();
for (int i = 0; i< mGroupingData.size();i++){
if(mGroupingData.get(i).getKey().equals(key)){
Map> searchMap = new HashMap>();
List goodFriendsList = new ArrayList<>(mGroupingData.get(i).getValue());
for(int j = goodFriendsList.size() - 1; j >= 0; j--){
if(!goodFriendsList.get(j).getPyname().contains(mResearchPy)){
goodFriendsList.remove(j);
}
}
searchMap.put(key, goodFriendsList);
Set>> searchSet = searchMap.entrySet();
mReserchGroupingData.add(searchSet.iterator().next());
bindview(mReserchGroupingData);
break;
}
}
}
}
@Override
public void afterTextChanged(Editable editable) {
}
});
bindview(mGroupingData);
}
private void bindview(List>> mData) {
mExpandableListView.setAdapter(new GoodFriendsAdapter(mData));
mExpandableListView.setGroupIndicator(null);
for (int i = 0; i < mData.size(); i++) {
mExpandableListView.expandGroup(i);
}
mExpandableListView.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {
@Override
public boolean onGroupClick(ExpandableListView expandableListView, View view, int i, long l) {
return true;
}
});
}
@Override
protected void initData() {
}
@Override
protected void startMine(Context context, Bundle bundle) {
}
@Override
public void turnToOtherView() {
}
/**
* 分组成Map集合
*/
public void toGropingTypeData(List list) {
List tempList;
Map> tempMap = new HashMap<>();
for (int i = 0; i < list.size(); i++) {
GoodFriendsInfo contactsModel1 = list.get(i);
if(contactsModel1 == null) continue;
String pinyinString = PinyinHelper.getShortPinyin(
contactsModel1.getName().toLowerCase().trim());
contactsModel1.setPyname(pinyinString);
String key = getPingyingKey(pinyinString);
if (key == null) continue;
tempList = tempMap.get(key);
if(tempList == null){
tempList = new ArrayList<>();
}
tempList.add(contactsModel1);
tempMap.put(key, tempList);
}
Set>> setEntry = tempMap.entrySet();
mGroupingData = new ArrayList<>(setEntry);
Collections.sort(mGroupingData, new Comparator>>() {
@Override
public int compare(Map.Entry> entry1, Map.Entry> entry2) {
if(entry1.getKey().equals("#")){
return 1;
}else if(entry2.getKey().equals("#")){
return -1;
}else{
Character c1 = entry1.getKey().charAt(0);
Character c2 = entry2.getKey().charAt(0);
return c1 - c2;
}
}
});
}
@Nullable
private String getPingyingKey(String pinyinString) {
//将拼音字符串转换为大写拼音
if(pinyinString == null && pinyinString.length() == 0) return null;
//获取大写拼音字符串的第一个字符
char tempChar = pinyinString.charAt(0);
String key;
if (tempChar < 'a' || tempChar > 'z') {
key = "#";
} else {
key = String.valueOf(tempChar).toUpperCase();
}
return key;
}
/**
* 初始化数据
*/
public List getData() {
List list = new ArrayList<>();
GoodFriendsInfo contactsModel;
String[] nameStrings = {"覃", "岑", "$来啊，来互相伤害啊", "疍姬", "梵蒂冈", "亳州",
"佟", "郄", "张三", "Edward", "李四", "萌萌哒", "霾耷", "离散", "赵信", "啦啦",
"辣妹子", "嗷嗷", "妹妹", "']asd", "%Hello"};
for (int i = 0; i < nameStrings.length; i++) {
contactsModel = new GoodFriendsInfo();
contactsModel.setName(nameStrings[i]);
list.add(contactsModel);
}
return list;
}
class GoodFriendsAdapter extends BaseExpandableListAdapter{
List>> mGroupData;
public GoodFriendsAdapter(List>> mData) {
mGroupData = mData;
}
@Override
public int getGroupCount() {
return mGroupData.size();
}
@Override
public int getChildrenCount(int i) {
Map.Entry> child = mGroupData.get(i);
if(child == null) return 0;
return child.getValue().size();
}
@Override
public Object getGroup(int i) {
return mGroupData.get(i);
}
@Override
public Object getChild(int i, int i1) {
Map.Entry> child = mGroupData.get(i);
if(child == null) return null;
return child.getValue();
}
@Override
public long getGroupId(int i) {
return i;
}
@Override
public long getChildId(int i, int i1) {
return i1;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public View getGroupView(int i, boolean b, View view, ViewGroup viewGroup) {
if (view == null) {
view = getLayoutInflater().inflate( R.layout.iterm_goodfriends_parent,null);
}
TextView text = (TextView) view.findViewById(R.id.text_friend_category);
text.setText(mGroupData.get(i).getKey());
return view;
}
@Override
public View getChildView(int i, int i1, boolean b, View view, ViewGroup viewGroup) {
if (view == null) {
view = getLayoutInflater().inflate( R.layout.iterm_goodfriends_child,null);
}
//ImageView mFriendPic = (ImageView) view.findViewById(R.id.image_friend_picture);
TextView mFriendname = (TextView) view.findViewById(R.id.text_friend_name);
//TextView mFriendFollow = (Button) view.findViewById(R.id.btn_friend_follow);
List entryData = mGroupData.get(i).getValue();
mFriendname.setText(entryData.get(i1).getName());
return view;
}
@Override
public boolean isChildSelectable(int i, int i1) {
return false;
}
}
public static void startActivity(Context context){
Intent intent = new Intent(context, GoodFriendsActivity.class);
context.startActivity(intent);
}
}