30、微信-表情相关

package com.example.wechat.chat;

import android.content.Context;
import android.graphics.drawable.Drawable;
import android.text.Spannable;
import android.text.style.ImageSpan;

import com.example.wechat.R;

import java.util.HashMap;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * Created by sing on 2016/2/15.
 * 表情
 */
public class SmileUtils {
public static final String f_static_00 = "[):0]";
public static final String f_static_01 = "[):]";
public static final String f_static_02 = "[:D]";
public static final String f_static_03 = "[;)]";
public static final String f_static_04 = "[:-o]";
public static final String f_static_05 = "[:p]";
public static final String f_static_06 = "[(H)]";
public static final String f_static_07 = "[:@]";
public static final String f_static_08 = "[:s]";
public static final String f_static_09 = "[:$]";
public static final String f_static_010 = "[:(]";
public static final String f_static_011 = "[:'(]";
public static final String f_static_012 = "[:|]";
public static final String f_static_013 = "[(a)]";
public static final String f_static_014 = "[8o|]";
public static final String f_static_015 = "[8-|]";
public static final String f_static_016 = "[+o(]";
public static final String f_static_017 = "[;
public static final String f_static_018 = "[|-)]";
public static final String f_static_019 = "[*-)]";
public static final String f_static_020 = "[:-#]";
public static final String f_static_021 = "[:-*]";
public static final String f_static_022 = "[^o)]";
public static final String f_static_023 = "[8-)]";
public static final String f_static_024 = "[(|)]";
public static final String f_static_025 = "[(u)]";
public static final String f_static_026 = "[(S)]";
public static final String f_static_027 = "[(*)]";
public static final String f_static_028 = "[(#)]";
public static final String f_static_029 = "[(R)]";
public static final String f_static_030 = "[({)]";
public static final String f_static_031 = "[(})]";
public static final String f_static_032 = "[(k)]";
public static final String f_static_033 = "[(F)]";
public static final String f_static_034 = "[(W)]";
public static final String f_static_035 = "[(D)]";

public static final String f_static_036 = "[(D1)]";
public static final String f_static_037 = "[(D2)]";
public static final String f_static_038 = "[(D3)]";
public static final String f_static_039 = "[(D4)]";
public static final String f_static_040 = "[(D5)]";
public static final String f_static_041 = "[(D6)]";
public static final String f_static_042 = "[(D7)]";
public static final String f_static_043 = "[(D8)]";
public static final String f_static_044 = "[(D9)]";
public static final String f_static_045 = "[(D10)]";
public static final String f_static_046 = "[(D11)]";
public static final String f_static_047 = "[(D12)]";
public static final String f_static_048 = "[(D13)]";
public static final String f_static_049 = "[(D14)]";
public static final String f_static_050 = "[(D15)]";
public static final String f_static_051 = "[(D16)]";
public static final String f_static_052 = "[(D17)]";
public static final String f_static_053 = "[(D18)]";
public static final String f_static_054 = "[(D19)]";
public static final String f_static_055 = "[(D20)]";
public static final String f_static_056 = "[(D21)]";
public static final String f_static_057 = "[(D22)]";
public static final String f_static_058 = "[(D23)]";
public static final String f_static_059 = "[(D24)]";
public static final String f_static_060 = "[(D25)]";
public static final String f_static_061 = "[(D26)]";
public static final String f_static_062 = "[(D27)]";

private static final Spannable.Factory spannableFactory = Spannable.Factory.getInstance();

private static final Map emoticons = new HashMap();

static {
addPattern(emoticons, f_static_00, R.drawable.f_static_00);
addPattern(emoticons, f_static_01, R.drawable.f_static_01);
addPattern(emoticons, f_static_02, R.drawable.f_static_02);
addPattern(emoticons, f_static_03, R.drawable.f_static_03);
addPattern(emoticons, f_static_04, R.drawable.f_static_04);
addPattern(emoticons, f_static_05, R.drawable.f_static_05);
addPattern(emoticons, f_static_06, R.drawable.f_static_06);
addPattern(emoticons, f_static_07, R.drawable.f_static_07);
addPattern(emoticons, f_static_08, R.drawable.f_static_08);
addPattern(emoticons, f_static_09, R.drawable.f_static_09);
addPattern(emoticons, f_static_010, R.drawable.f_static_010);
addPattern(emoticons, f_static_011, R.drawable.f_static_011);
addPattern(emoticons, f_static_012, R.drawable.f_static_012);
addPattern(emoticons, f_static_013, R.drawable.f_static_013);
addPattern(emoticons, f_static_014, R.drawable.f_static_014);
addPattern(emoticons, f_static_015, R.drawable.f_static_015);
addPattern(emoticons, f_static_016, R.drawable.f_static_016);
addPattern(emoticons, f_static_017, R.drawable.f_static_017);
addPattern(emoticons, f_static_018, R.drawable.f_static_018);
addPattern(emoticons, f_static_019, R.drawable.f_static_019);
addPattern(emoticons, f_static_020, R.drawable.f_static_020);
addPattern(emoticons, f_static_021, R.drawable.f_static_021);
addPattern(emoticons, f_static_022, R.drawable.f_static_022);
addPattern(emoticons, f_static_023, R.drawable.f_static_023);
addPattern(emoticons, f_static_024, R.drawable.f_static_024);
addPattern(emoticons, f_static_025, R.drawable.f_static_025);
addPattern(emoticons, f_static_026, R.drawable.f_static_026);
addPattern(emoticons, f_static_027, R.drawable.f_static_027);
addPattern(emoticons, f_static_028, R.drawable.f_static_028);
addPattern(emoticons, f_static_029, R.drawable.f_static_029);
addPattern(emoticons, f_static_030, R.drawable.f_static_030);
addPattern(emoticons, f_static_031, R.drawable.f_static_031);
addPattern(emoticons, f_static_032, R.drawable.f_static_032);
addPattern(emoticons, f_static_033, R.drawable.f_static_033);
addPattern(emoticons, f_static_034, R.drawable.f_static_034);
addPattern(emoticons, f_static_035, R.drawable.f_static_035);

addPattern(emoticons, f_static_036, R.drawable.f_static_036);
addPattern(emoticons, f_static_037, R.drawable.f_static_037);
addPattern(emoticons, f_static_038, R.drawable.f_static_038);
addPattern(emoticons, f_static_039, R.drawable.f_static_039);
addPattern(emoticons, f_static_040, R.drawable.f_static_040);
addPattern(emoticons, f_static_041, R.drawable.f_static_041);
addPattern(emoticons, f_static_042, R.drawable.f_static_042);
addPattern(emoticons, f_static_043, R.drawable.f_static_043);
addPattern(emoticons, f_static_044, R.drawable.f_static_044);
addPattern(emoticons, f_static_045, R.drawable.f_static_045);
addPattern(emoticons, f_static_046, R.drawable.f_static_046);
addPattern(emoticons, f_static_047, R.drawable.f_static_047);
addPattern(emoticons, f_static_048, R.drawable.f_static_048);
addPattern(emoticons, f_static_049, R.drawable.f_static_049);
addPattern(emoticons, f_static_050, R.drawable.f_static_050);
addPattern(emoticons, f_static_051, R.drawable.f_static_051);
addPattern(emoticons, f_static_052, R.drawable.f_static_052);
addPattern(emoticons, f_static_053, R.drawable.f_static_053);
addPattern(emoticons, f_static_054, R.drawable.f_static_054);
addPattern(emoticons, f_static_055, R.drawable.f_static_055);
addPattern(emoticons, f_static_056, R.drawable.f_static_056);

addPattern(emoticons, f_static_057, R.drawable.f_static_057);
addPattern(emoticons, f_static_058, R.drawable.f_static_058);
addPattern(emoticons, f_static_059, R.drawable.f_static_059);
addPattern(emoticons, f_static_060, R.drawable.f_static_060);
addPattern(emoticons, f_static_061, R.drawable.f_static_060);
addPattern(emoticons, f_static_062, R.drawable.f_static_062);
    }

private static void addPattern(Map map, String smile, int resource) {
        map.put(Pattern.compile(Pattern.quote(smile)), resource);
    }

/**
     * replace existing spannable with smiles
     *
     * @param context
* @param spannable
* @return
*/
public static boolean addSmiles(Context context, Spannable spannable) {
boolean hasChanges = false;
for (Map.Entry entry : emoticons.entrySet()) {
            Matcher matcher = entry.getKey().matcher(spannable);
while (matcher.find()) {
boolean set = true;
for (ImageSpan span : spannable.getSpans(matcher.start(),
                        matcher.end(), ImageSpan.class))
if (spannable.getSpanStart(span) >= matcher.start()
                            && spannable.getSpanEnd(span) <= matcher.end())
                        spannable.removeSpan(span);
else {
                        set = false;
break;
                    }
if (set) {
                    hasChanges = true;
                    Drawable drawable = context.getResources().getDrawable(
                            entry.getValue());
                    drawable.setBounds(0, 0, 50, 50);// 这里设置图片的大小
ImageSpan imageSpan = new ImageSpan(drawable,
                            ImageSpan.ALIGN_BOTTOM);
                    spannable.setSpan(imageSpan, matcher.start(),
                            matcher.end(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                }
            }
        }
return hasChanges;
    }

public static Spannable getSmiledText(Context context, CharSequence text) {
        Spannable spannable = spannableFactory.newSpannable(text);
addSmiles(context, spannable);
return spannable;
    }

public static boolean containsKey(String key) {
boolean b = false;
for (Map.Entry entry : emoticons.entrySet()) {
            Matcher matcher = entry.getKey().matcher(key);
if (matcher.find()) {
                b = true;
break;
            }
        }

return b;
    }

}

这里面使用了正则表达式 Pattern把表情符号诸如 "[):0]" 与具体头像资源进行匹配，在文本框里面既显示文字又能显示文本这里用到了 Spannable，后面分别介绍。