TextView部分文字高亮显示并同时显示表情

这里显示表情的思路是，先把表情准备到本地中，给表情添加一个bean，TextView通过替换编码来显示表情。

例如【嘻嘻】，找到这样的字符串则去本地文件夹中寻找对应的图片并显示。

package com.uim.microblog.util;  
  
import java.lang.reflect.Field;  
import java.util.List;  
  
import android.app.Activity;  
import android.graphics.drawable.Drawable;  
import android.text.Spannable;  
import android.text.SpannableString;  
import android.text.Spanned;  
import android.text.style.ImageSpan;  
import android.text.style.URLSpan;  
import android.util.Log;  
import android.widget.TextView;  
  
import com.uim.R;  
import com.uim.microblog.model.Emotions;  
import com.uim.microblog.ui.BlogHomeActivity;  
  
/** 
 * 处理TextView界面的类 
 * @author mzba 
 * @version 2011-06-23 
 * 
 */  
public class TextAutoLink {  
  
    // 加入话题 好友 URL的连结  
    public static char strarray[];  
  
    public static void addURLSpan(Activity activity, String str, TextView textView) {  
        try{  
            SpannableString ss = new SpannableString(str);  
            strarray = str.toCharArray();  
            int l = str.length() - 10;  
            for (int i = 0; i < l; i++) {  
                if (strarray[i] == 'h' && strarray[i + 1] == 't'  
                        && strarray[i + 2] == 't' && strarray[i + 3] == 'p'  
                        && strarray[i + 4] == ':' && strarray[i + 5] == '/'  
                        && strarray[i + 6] == '/') {  
                    StringBuffer sb = new StringBuffer("http://");  
                    for (int j = i + 7; true; j++) {  
                        if (strarray[j] != ' ')  
                            sb.append(strarray[j]);  
                        else {  
                            Log.d("http", sb.toString());  
                            ss.setSpan(new URLSpan(sb.toString()), i, j,  
                                    Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);  
                            i = j;  
                            break;  
                        }  
                    }  
                }  
            }  
            // 处理话题  
            l = str.length();  
            StringBuffer sb = null;  
            boolean start = false;  
            int startIndex = 0;  
            for (int i = 0; i < l; i++) {  
                if (strarray[i] == '@') {  
                    start = true;  
                    sb = new StringBuffer("weibo://weibo.view/");  
                    startIndex = i;  
                } else {  
                    if (start) {  
                        if (strarray[i] == ':') {  
                            ss.setSpan(new URLSpan(sb.toString()), startIndex, i,  
                                    Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);  
                            sb = null;  
                            start = false;  
                        } else {  
                            sb.append(strarray[i]);  
                        }  
                    }  
                }  
  
            }  
            // 处理 话题  
            start = false;  
            startIndex = 0;  
            for (int i = 0; i < l; i++) {  
                if (strarray[i] == '#') {  
                    if (!start) {  
                        start = true;  
                        sb = new StringBuffer("weibo://weibo.view/");  
                        startIndex = i;  
                    } else {  
                        sb.append('#');  
                        ss.setSpan(new URLSpan(sb.toString()), startIndex, i + 1,  
                                Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);  
                        sb = null;  
                        start = false;  
                    }  
                } else {  
                    if (start) {  
                        sb.append(strarray[i]);  
                    }  
                }  
            }  
              
            //处理显示表情  
            String content = str;  
            int len = 0;  
            int starts = 0;  
            int end = 0;  
            while(len < content.length()){  
                if(content.indexOf("[", starts) != -1 && content.indexOf("]", end) != -1){  
                    starts = content.indexOf("[", starts);  
                    end = content.indexOf("]", end);  
                    String phrase = content.substring(starts,end + 1);  
                    String imageName = "";  
                    List<Emotions> list = BlogHomeActivity.emotions;  
                    for (Emotions emotions : list) {  
                        if (emotions.getPhrase().equals(phrase)) {  
                            imageName = emotions.getImageName();  
                        }  
                    }  
                      
                    try {  
                        Field f = (Field)R.drawable.class.getDeclaredField(imageName);  
                        int i= f.getInt(R.drawable.class);  
                        Drawable drawable = activity.getResources().getDrawable(i);    
                        if (drawable != null) {  
                            drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());   
                            ImageSpan span = new ImageSpan(drawable, ImageSpan.ALIGN_BASELINE);    
                            ss.setSpan(span, starts,end + 1, Spannable.SPAN_INCLUSIVE_EXCLUSIVE);    
                        }  
                    } catch (SecurityException e) {  
                        e.printStackTrace();  
                    } catch (NoSuchFieldException e) {  
                        e.printStackTrace();  
                    } catch (IllegalArgumentException e) {  
                        e.printStackTrace();  
                    } catch (IllegalAccessException e) {  
                          
                    }  
                    starts = end;  
                    len = end;  
                    end++;  
                }else{  
                    starts++;  
                    end++;  
                    len = end;  
                }  
            }  
              
            textView.setText(ss); // 设定TextView话题和url和好友 连接  
            strarray = null;  
        } catch (Exception e) {  
            e.printStackTrace();  
        }  
          
    }  
}