android TextAppearanceSpan 使用注意事项。

来源：互联网发布：美妆软件哪个好编辑：程序博客网时间：2024/05/01 10:58

最近接到一个任务，是在聊天的过程，通过正则表达式匹配出所有的url，加上下划线，点击之后并跳转。一开始使用的是在xml文件中，改textview加上autolink的属性，但是加上属性之后，你会发现，我输入 ”我是www.baidu.com“，整句话都会加上下划线，导致跳转不正确。后面根据老大的提示，找到google匹配url的正则表达式，用代码去匹配发现是正常的。http://grepcode.com/file/repository.grepcode.com/java/ext/com.google.android/android/2.0_r1/android/text/util/Regex.java#Regex.digitsAndPlusOnly%28java.util.regex.Matcher%29

后面，使用

float textSize =Textview.getTextSize();//获取textview的字体大小

SpannableString checkInSpanStr = new SpannableString(data);

matchUrl(checkInSpanStr, textSize);

            Textview.setText(checkInSpanStr);
           Textview.setMovementMethod(LinkMovementMethod.getInstance());

public void matchUrl(SpannableString data, float textSize) {
       String pat3 = "(((?:(http|https|Http|Https|rtsp|Rtsp):\\/\\/(?:(?:[a-zA-Z0-9\\$\\-\\_\\.\\+\\!\\*\\'\$\$"
             + "\\,\\;\\?\\&\\=]|(?:\\%[a-fA-F0-9]{2})){1,64}(?:\\:(?:[a-zA-Z0-9\\$\\-\\_"
             + "\\.\\+\\!\\*\\'\$\$\\,\\;\\?\\&\\=]|(?:\\%[a-fA-F0-9]{2})){1,25})?\\@)?)?"
             + "((?:(?:[a-zA-Z0-9][a-zA-Z0-9\\-]{0,64}\\.)+"   // named host
             + "(?:"   // plus top level domain
             + "(?:aero|arpa|asia|a[cdefgilmnoqrstuwxz])"
             + "|(?:biz|b[abdefghijmnorstvwyz])"
             + "|(?:cat|com|coop|c[acdfghiklmnoruvxyz])"
             + "|d[ejkmoz]"
             + "|(?:edu|e[cegrstu])"
             + "|f[ijkmor]"
             + "|(?:gov|g[abdefghilmnpqrstuwy])"
             + "|h[kmnrtu]"
             + "|(?:info|int|i[delmnoqrst])"
             + "|(?:jobs|j[emop])"
             + "|k[eghimnrwyz]"
             + "|l[abcikrstuvy]"
             + "|(?:mil|mobi|museum|m[acdghklmnopqrstuvwxyz])"
             + "|(?:name|net|n[acefgilopruz])"
             + "|(?:org|om)"
             + "|(?:pro|p[aefghklmnrstwy])"
             + "|qa"
             + "|r[eouw]"
             + "|s[abcdeghijklmnortuvyz]"
             + "|(?:tel|travel|t[cdfghjklmnoprtvwz])"
             + "|u[agkmsyz]"
             + "|v[aceginu]"
             + "|w[fs]"
             + "|y[etu]"
             + "|z[amw]))"
             + "|(?:(?:25[0-5]|2[0-4]" // or ip address
             + "[0-9]|[0-1][0-9]{2}|[1-9][0-9]|[1-9])\\.(?:25[0-5]|2[0-4][0-9]"
             + "|[0-1][0-9]{2}|[1-9][0-9]|[1-9]|0)\\.(?:25[0-5]|2[0-4][0-9]|[0-1]"
             + "[0-9]{2}|[1-9][0-9]|[1-9]|0)\\.(?:25[0-5]|2[0-4][0-9]|[0-1][0-9]{2}"
             + "|[1-9][0-9]|[0-9])))"
             + "(?:\\:\\d{1,5})?)" // plus option port number
             + "(\\/(?:(?:[a-zA-Z0-9\\;\\/\\?\\:\\@\\&\\=\\#\\~" // plus option query params
             + "\\-\\.\\+\\!\\*\\'\$\$\\,\\_])|(?:\\%[a-fA-F0-9]{2}))*)?"
             + "(?:\\b|$))";
       Pattern pattern = Pattern.compile(pat3, Pattern.CASE_INSENSITIVE);
        final Matcher matcher = pattern.matcher(data);
        int start, end;
        while (matcher.find()) {
           start = matcher.start(1);
           end = matcher.end(1);
           final String u = data.toString().substring(start, end);

           data.setSpan(new ClickableSpan() {

               @Override
               public void onClick(View widget) {
                   Intent intent = new Intent();
                   intent.setClass(mActivity,
                           xxx.class);
                   Bundle bundle = new Bundle();
                   bundle.putString("url", u);
                   intent.putExtras(bundle);
                   mActivity.startActivity(intent);
               }
           }, start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);//一定要注意代码顺序，先设置点击事件，然后在设置字体的大小和颜色

               ColorStateList csl = mActivity.getResources().getColorStateList(R.color.color_list);//color_list就是一个color的selecter
               data.setSpan(new TextAppearanceSpan("default", android.graphics.Typeface.NORMAL, (int) textSize, csl, null ), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);//五个参数分别是，字体名称，字体样式，字体大小，字体颜色，字体链接颜色
        }
   }

遇到一个问题：长按事件会触发点击事件，

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