Android T9搜索

在android中实现一个通过T9搜索联系人的功能。

使用的库： https://github.com/YiiGuxing/T9Search

引用：

compile 'cn.tinkling.t9:t9search:1.1.0'

生成匹配串：

String t9Key = T9Utils.buildT9Key("重新称重", new PinyinProvider() {
    @Override
    public String[] getPinyin(char input) {
        // 在这里生成拼音，如果需要支持多音字匹配，返回多个拼音就行了。
        // 由于多音字的拼音可能只是声调不同，去除声调后是一样的(如：“啊”字)，所以建议做一下去重复操作。
        return new String[]{/*拼音...*/};
    }
});
// 匹配串用于搜索匹配

搜索匹配：

String t9Key; // 上面生成的匹配串
String constraint; // 输入的搜索键
// 开始匹配并返回匹配信息
T9MatchInfo matchInfo = T9Matcher.matches(t9Key, constraint);
// ...

以上便是基本的用法。

一个简单封装的工具类：（通过 pinyin4j 库实现汉字转拼音）

• T9SearchSupport.java

import android.support.annotation.NonNull;
import android.support.v4.util.Pools;
import android.text.Spannable;
import android.text.SpannableStringBuilder;
import android.text.TextUtils;
import android.text.style.ForegroundColorSpan;

import net.sourceforge.pinyin4j.PinyinHelper;
import net.sourceforge.pinyin4j.format.HanyuPinyinCaseType;
import net.sourceforge.pinyin4j.format.HanyuPinyinOutputFormat;
import net.sourceforge.pinyin4j.format.HanyuPinyinToneType;
import net.sourceforge.pinyin4j.format.HanyuPinyinVCharType;
import net.sourceforge.pinyin4j.format.exception.BadHanyuPinyinOutputFormatCombination;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import cn.tinkling.t9.PinyinProvider;
import cn.tinkling.t9.T9MatchInfo;
import cn.tinkling.t9.T9Matcher;
import cn.tinkling.t9.T9Utils;

public final class T9SearchSupport {

    private static final PinyinProvider PINYIN_PROVIDER;
    private static final HanyuPinyinOutputFormat FORMAT;

    private static final Pools.SynchronizedPool<Set<String>> SET_POOL;

    static {
        FORMAT = new HanyuPinyinOutputFormat();
        FORMAT.setCaseType(HanyuPinyinCaseType.UPPERCASE);
        FORMAT.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
        FORMAT.setVCharType(HanyuPinyinVCharType.WITH_V);

        SET_POOL = new Pools.SynchronizedPool<>(4);

        PINYIN_PROVIDER = new PinyinProvider() {
            @Override
            public String[] getPinyin(char input) {
                Set<String> set = SET_POOL.acquire();
                if (set == null) {
                    set = new HashSet<>();
                }

                try {
                    String[] pys = PinyinHelper.toHanyuPinyinStringArray(input, FORMAT);
                    if (pys == null)
                        return null;

                    // 去除重复
                    set.addAll(Arrays.asList(pys));
                    return set.toArray(new String[set.size()]);
                } catch (BadHanyuPinyinOutputFormatCombination e) {
                    e.printStackTrace();
                } finally {
                    set.clear();
                    SET_POOL.release(set);
                }

                return null;
            }
        };
    }

    private T9SearchSupport() {
    }

    /**
     * 生成T9键
     *
     * @param input 输入
     * @return T9键
     */
    @NonNull
    public static String buildT9Key(String input) {
        return T9Utils.buildT9Key(input, PINYIN_PROVIDER);
    }

    /**
     * 过虑
     */
    public static List<Contact> filter(List<Contact> contacts, String key) {
        ArrayList<Contact> filtered = new ArrayList<>();

        if (contacts != null && contacts.size() > 0) {
            for (Contact contact : contacts) {
                T9MatchInfo nameMatch = T9Matcher.matches(contact.t9Key, key);
                T9MatchInfo numberMatch = T9Matcher.matchesNumber(contact.phoneNumber, key);

                if (nameMatch.found() || numberMatch.found()) {
                    Contact c = new Contact(contact);
                    c.nameMatchInfo = nameMatch;
                    c.phoneNumberMatchInfo = numberMatch;
                    filtered.add(c);
                }
            }

            Collections.sort(filtered, COMPARATOR);
        }

        return filtered;
    }

    /**
     * 高亮文本
     */
    public static SpannableStringBuilder highLight(SpannableStringBuilder buffer,
                                                   T9MatchInfo matchInfo,
                                                   String text,
                                                   int color) {
        buffer.clear();
        if (!TextUtils.isEmpty(text)) {
            buffer.append(text);

            final int maxLength = text.length();
            while (matchInfo != null) {
                int start = matchInfo.start();
                int end = start + matchInfo.length();
                if ((matchInfo.found() && start < maxLength && end <= maxLength)) {
                    buffer.setSpan(new ForegroundColorSpan(color), start, end,
                            Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                }

                matchInfo = matchInfo.next();
            }
        }

        return buffer;
    }

    private static final Comparator<Contact> COMPARATOR = new Comparator<Contact>() {

        @Override
        public int compare(Contact left, Contact right) {
            T9MatchInfo leftNameMatch = left.nameMatchInfo;
            T9MatchInfo rightNameMatch = right.nameMatchInfo;
            if (leftNameMatch.found()) {
                if (rightNameMatch.found()) {
                    int lStart = leftNameMatch.start();
                    int rStart = rightNameMatch.start();

                    if (lStart < rStart) {
                        return -1;
                    } else if (lStart > rStart) {
                        return 1;
                    }

                    int lLen = getMatchLength(leftNameMatch);
                    int rLen = getMatchLength(rightNameMatch);

                    int temp = left.name.length() - lLen - (right.name.length() - rLen);
                    if (temp != 0) {
                        if (lLen < rLen) {
                            return 1;
                        } else if (lLen > rLen) {
                            return -1;
                        }
                        return temp;
                    } else if (lLen != rLen) {
                        if (left.name.length() > right.name.length()) {
                            return 1;
                        } else if (left.name.length() < right.name.length()) {
                            return -1;
                        }
                    }

                    return left.name.compareToIgnoreCase(right.name);

                } else {
                    return -1;
                }
            } else if (rightNameMatch.found()) {
                return 1;
            }

            T9MatchInfo leftNumberMatch = left.phoneNumberMatchInfo;
            T9MatchInfo rightNumberMatch = right.phoneNumberMatchInfo;
            if (leftNumberMatch.found()) {
                if (rightNumberMatch.found()) {
                    int lStart = leftNumberMatch.start();
                    int rStart = rightNumberMatch.start();

                    if (lStart < rStart) {
                        return -1;
                    } else if (lStart > rStart) {
                        return 1;
                    } else {
                        return left.phoneNumber.compareToIgnoreCase(right.phoneNumber);
                    }
                } else {
                    return -1;
                }
            } else if (rightNumberMatch.found()) {
                return 1;
            }

            return 0;
        }

        private int getMatchLength(T9MatchInfo matchInfo) {
            int len = 0;
            while (matchInfo != null) {
                len += matchInfo.length();
                matchInfo = matchInfo.next();
            }

            return len;
        }
    };
}

• Contact.java

import cn.tinkling.t9.T9MatchInfo;

public class Contact {

    public String name;
    public String phoneNumber;
    public String t9Key;
    public T9MatchInfo nameMatchInfo;
    public T9MatchInfo phoneNumberMatchInfo;

    public Contact(String name, String phoneNumber, String t9Key) {
        this.name = name;
        this.phoneNumber = phoneNumber;
        this.t9Key = t9Key;
    }

    public Contact(Contact contact) {
        this(contact.name, contact.phoneNumber, contact.t9Key);
    }
}

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