Android TextView对URL识别

IM开发过程中,对文本消息中的超练级进行点击处理,使用系统的tv.setAutoLinkMask(Linkify.PHONE_NUMBERS | Linkify.WEB_URLS);方法:

/**
   * 拦截超链接
   */
  public static void interceptHyperLink(TextView tv, ChatContext chatContext, int msg_type,
      long msg_id, String send_ucid) {
    tv.setAutoLinkMask(Linkify.PHONE_NUMBERS | Linkify.WEB_URLS);
    tv.setMovementMethod(LinkMovementMethod.getInstance());
    CharSequence text = tv.getText();
    if (text instanceof Spannable) {
      int end = text.length();
      Spannable spannable = (Spannable) tv.getText();
      URLSpan[] urlSpans = spannable.getSpans(0, end, URLSpan.class);
      if (urlSpans.length == 0) {
        return;
      }

      SpannableStringBuilder spannableStringBuilder = new SpannableStringBuilder(text);
      for (URLSpan uri : urlSpans) {
        String url = uri.getURL();
        CustomURLSpan custom = new CustomURLSpan(url, chatContext, msg_type, msg_id, send_ucid);
        spannableStringBuilder.setSpan(custom, spannableStringBuilder.getSpanStart(uri),
            spannableStringBuilder.getSpanEnd(uri), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
      }
      tv.setText(spannableStringBuilder);
    }
  }

Android自带的表达式(android.util.Patterns)，在不同的ROM上表现形式是不一样的，在一些比较诡异的case上基本识别不出来,比如对于http://lianjia.com/xxx 啊啊啊这种连接,华为手机正常识别了,三星手机把后面的汉字也一起识别了,手机兼容性问题,最后只能自己写正则去匹配:

public class LinkifySpannableUtils {

    public static LinkifySpannableUtils mInstance;

    private Context mContext;
    private TextView mTextView;
    private SpannableStringBuilder mSpannableStringBuilder;

    private LinkifySpannableUtils() {
    }

    public static LinkifySpannableUtils getInstance() {
        if (mInstance == null) {
            mInstance = new LinkifySpannableUtils();
        }
        return mInstance;
    }

    public void setSpan(Context context, TextView textView) {
        this.mContext = context;
        this.mTextView = textView;
        addLinks();
    }

    private void addLinks() {
        Linkify.addLinks(mTextView, WEB_URL, null);
        Linkify.addLinks(mTextView, EMAIL_ADDRESS, null);
        Linkify.addLinks(mTextView, PHONE, null);

        CharSequence cSequence = mTextView.getText();
        if (cSequence instanceof Spannable) {
            int end = mTextView.getText().length();
            Spannable sp = (Spannable) mTextView.getText();
            URLSpan[] urls = sp.getSpans(0, end, URLSpan.class);
            mSpannableStringBuilder = new SpannableStringBuilder(sp);
            mSpannableStringBuilder.clearSpans();

            for (URLSpan url : urls) {
                String urlString = url.getURL();
                PatternURLSpan patternURLSpan = new PatternURLSpan(urlString);
                if (urlString != null && urlString.length() > 0) {
                    int _start = sp.getSpanStart(url);
                    int _end = sp.getSpanEnd(url);
                    try {
                        mSpannableStringBuilder.setSpan(patternURLSpan, _start, _end, Spannable.SPAN_EXCLUSIVE_INCLUSIVE);
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
            }
            mTextView.setLinkTextColor(ColorStateList.valueOf(Color.BLUE));
            mTextView.setHighlightColor(Color.parseColor("#AAAAAA"));
            mTextView.setText(mSpannableStringBuilder);
        }
    }

    private class PatternURLSpan extends ClickableSpan {

        private String mString;

        PatternURLSpan(String str) {
            this.mString = str;
        }

        @Override
        public void onClick(View widget) {
                if (EMAIL_ADDRESS.matcher(mString).find()) {
                    sendEmail(mString);
                } else if (WEB_URL.matcher(mString).find()) {
                    openUrl(mString);
                } else if (PHONE.matcher(mString).find()) {
                    dialNum(mString);
                } else {
                    if (mString.contains(".")) {
                        if (mString.startsWith("http")) {
                            openUrl(mString);
                        } else {
                            openUrl("http://" + mString);
                        }
                    }
                }
        }
    }


    /**
     * 打开系统浏览器
     * @param url
     */
    private void openUrl(String url) {
        Intent intent = new Intent(Intent.ACTION_VIEW);
        intent.setData(Uri.parse(url));
        intent.setClassName("com.android.browser",   
                "com.android.browser.BrowserActivity");  
        mContext.startActivity(intent);
    }


    /**
     * 拨打电话
     * @param num
     */
    private void dialNum(final String num) {
        if (num != null && num.length() > 0) {
            call(num, mContext);
        }
    }

    /**
     * 调用邮箱
     * @param address
     */
    private void sendEmail(String address) {
        String[] receive = new String[]{address};
        Intent intent = new Intent(Intent.ACTION_SEND);
        intent.setType("plain/text");
        intent.putExtra(Intent.EXTRA_EMAIL, receive);
        mContext.startActivity(Intent.createChooser(intent, ""));
    }


    private void call(final String mobile, final Context activity) {
        if (mobile == null || mobile.length() == 0) {
            Toast.makeText(activity, "电话号码为空", Toast.LENGTH_SHORT).show();
            return;
        }
        String phone = mobile.toLowerCase();
        if (!phone.startsWith("tel:")) {
            phone = "tel:" + mobile;
        }
        final String callMobile = phone;

        //适配6.0系统，申请权限
        if (ActivityCompat.checkSelfPermission(activity, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {

            ActivityCompat.requestPermissions((Activity) activity,
                    new String[]{Manifest.permission.CALL_PHONE},
                    MainActivity.REQUESTCODE);
        }else {
            callPhone(activity,callMobile);
        }


    }

    public static void callPhone(Context activity, String callMobile) {
        Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse(callMobile));
        if (ActivityCompat.checkSelfPermission(activity, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
            return;
        }
        activity.startActivity(intent);
    }


    public final String TOP_LEVEL_DOMAIN_STR_FOR_WEB_URL =
            "(?:"
                    + "(?: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[eghimnprwyz]"
                    + "|l[abcikrstuvy]"
                    + "|(?:mil|mobi|museum|m[acdeghklmnopqrstuvwxyz])"
                    + "|(?:name|net|n[acefgilopruz])"
                    + "|(?:org|om)"
                    + "|(?:pro|p[aefghklmnrstwy])"
                    + "|qa"
                    + "|r[eosuw]"
                    + "|s[abcdeghijklmnortuvyz]"
                    + "|(?:tel|travel|t[cdfghjklmnoprtvwz])"
                    + "|u[agksyz]"
                    + "|v[aceginu]"
                    + "|w[fs]"
                    + "|(?:\u03b4\u03bf\u03ba\u03b9\u03bc\u03ae|\u0438\u0441\u043f\u044b\u0442\u0430\u043d\u0438\u0435|\u0440\u0444|\u0441\u0440\u0431|\u05d8\u05e2\u05e1\u05d8|\u0622\u0632\u0645\u0627\u06cc\u0634\u06cc|\u0625\u062e\u062a\u0628\u0627\u0631|\u0627\u0644\u0627\u0631\u062f\u0646|\u0627\u0644\u062c\u0632\u0627\u0626\u0631|\u0627\u0644\u0633\u0639\u0648\u062f\u064a\u0629|\u0627\u0644\u0645\u063a\u0631\u0628|\u0627\u0645\u0627\u0631\u0627\u062a|\u0628\u06be\u0627\u0631\u062a|\u062a\u0648\u0646\u0633|\u0633\u0648\u0631\u064a\u0629|\u0641\u0644\u0633\u0637\u064a\u0646|\u0642\u0637\u0631|\u0645\u0635\u0631|\u092a\u0930\u0940\u0915\u094d\u0937\u093e|\u092d\u093e\u0930\u0924|\u09ad\u09be\u09b0\u09a4|\u0a2d\u0a3e\u0a30\u0a24|\u0aad\u0abe\u0ab0\u0aa4|\u0b87\u0ba8\u0bcd\u0ba4\u0bbf\u0baf\u0bbe|\u0b87\u0bb2\u0b99\u0bcd\u0b95\u0bc8|\u0b9a\u0bbf\u0b99\u0bcd\u0b95\u0baa\u0bcd\u0baa\u0bc2\u0bb0\u0bcd|\u0baa\u0bb0\u0bbf\u0b9f\u0bcd\u0b9a\u0bc8|\u0c2d\u0c3e\u0c30\u0c24\u0c4d|\u0dbd\u0d82\u0d9a\u0dcf|\u0e44\u0e17\u0e22|\u30c6\u30b9\u30c8|\u4e2d\u56fd|\u4e2d\u570b|\u53f0\u6e7e|\u53f0\u7063|\u65b0\u52a0\u5761|\u6d4b\u8bd5|\u6e2c\u8a66|\u9999\u6e2f|\ud14c\uc2a4\ud2b8|\ud55c\uad6d|xn\\-\\-0zwm56d|xn\\-\\-11b5bs3a9aj6g|xn\\-\\-3e0b707e|xn\\-\\-45brj9c|xn\\-\\-80akhbyknj4f|xn\\-\\-90a3ac|xn\\-\\-9t4b11yi5a|xn\\-\\-clchc0ea0b2g2a9gcd|xn\\-\\-deba0ad|xn\\-\\-fiqs8s|xn\\-\\-fiqz9s|xn\\-\\-fpcrj9c3d|xn\\-\\-fzc2c9e2c|xn\\-\\-g6w251d|xn\\-\\-gecrj9c|xn\\-\\-h2brj9c|xn\\-\\-hgbk6aj7f53bba|xn\\-\\-hlcj6aya9esc7a|xn\\-\\-j6w193g|xn\\-\\-jxalpdlp|xn\\-\\-kgbechtv|xn\\-\\-kprw13d|xn\\-\\-kpry57d|xn\\-\\-lgbbat1ad8j|xn\\-\\-mgbaam7a8h|xn\\-\\-mgbayh7gpa|xn\\-\\-mgbbh1a71e|xn\\-\\-mgbc0a9azcg|xn\\-\\-mgberp4a5d4ar|xn\\-\\-o3cw4h|xn\\-\\-ogbpf8fl|xn\\-\\-p1ai|xn\\-\\-pgbs0dh|xn\\-\\-s9brj9c|xn\\-\\-wgbh1c|xn\\-\\-wgbl6a|xn\\-\\-xkc2al3hye2a|xn\\-\\-xkc2dl3a5ee0h|xn\\-\\-yfro4i67o|xn\\-\\-ygbi2ammx|xn\\-\\-zckzah|xxx)"
                    + "|y[et]" + "|z[amw]))";

    public final String GOOD_IRI_CHAR = "a-zA-Z0-9\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF";


    public final Pattern WEB_URL = Pattern
            .compile("((?:(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})?\\@)?)?"
                    + "((?:(?:["
                    + GOOD_IRI_CHAR
                    + "]["
                    + GOOD_IRI_CHAR
                    + "\\-]{0,64}\\.)+" // named host
                    + TOP_LEVEL_DOMAIN_STR_FOR_WEB_URL
                    + "|(?:(?: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
                    + "(\\/(?:(?:[" + GOOD_IRI_CHAR + "\\;\\/\\?\\:\\@\\&\\=\\#\\~" // plus option query
                    // params
                    + "\\-\\.\\+\\!\\*\\'\\(\\)\\,\\_])|(?:\\%[a-fA-F0-9]{2}))*)?" + "(?:\\b|$)");

    public static final Pattern EMAIL_ADDRESS = Pattern.compile("[a-zA-Z0-9\\+\\.\\_\\%\\-\\+]{1,256}" + "\\@"
            + "[a-zA-Z0-9][a-zA-Z0-9\\-]{0,64}" + "(" + "\\." + "[a-zA-Z0-9][a-zA-Z0-9\\-]{0,25}" + ")+");
    public static final Pattern EMAIL_PATTERN = Pattern.compile("[A-Z0-9a-z\\._%+-]+@([A-Za-z0-9-]+\\.)+[A-Za-z]{2,4}");
    public static final Pattern WEB_PATTERN =
            Pattern
                    .compile("((http[s]{0,1}|ftp)://[a-zA-Z0-9\\.\\-]+\\.([a-zA-Z]{2,4})(:\\d+)?(/[a-zA-Z0-9\\.\\-~!@#$%^&*+?:_/=<>]*)?)|(www.[a-zA-Z0-9\\.\\-]+\\.([a-zA-Z]{2,4})(:\\d+)?(/[a-zA-Z0-9\\.\\-~!@#$%^&*+?:_/=<>]*)?)");

    public static final Pattern PHONE = Pattern.compile( // sdd = space, dot, or dash
            "(\\+[0-9]+[\\- \\.]*)?" // +<digits><sdd>*
                    + "(\\([0-9]+\\)[\\- \\.]*)?" // (<digits>)<sdd>*
                    + "([0-9][0-9\\- \\.][0-9\\- \\.]+[0-9])");


}

上述WEB_URL正则仍不能正常识别,最后采用:

// all domain names
private static final String[] ext = {
    "top", "com.cn", "com", "net", "org", "edu", "gov", "int", "mil", "cn", "tel", "biz", "cc", "tv", "info", 
    "name", "hk", "mobi", "asia", "cd", "travel", "pro", "museum", "coop", "aero", "ad", "ae", "af", 
    "ag", "ai", "al", "am", "an", "ao", "aq", "ar", "as", "at", "au", "aw", "az", "ba", "bb", "bd", 
    "be", "bf", "bg", "bh", "bi", "bj", "bm", "bn", "bo", "br", "bs", "bt", "bv", "bw", "by", "bz", 
    "ca", "cc", "cf", "cg", "ch", "ci", "ck", "cl", "cm", "cn", "co", "cq", "cr", "cu", "cv", "cx", 
    "cy", "cz", "de", "dj", "dk", "dm", "do", "dz", "ec", "ee", "eg", "eh", "es", "et", "ev", "fi", 
    "fj", "fk", "fm", "fo", "fr", "ga", "gb", "gd", "ge", "gf", "gh", "gi", "gl", "gm", "gn", "gp", 
    "gr", "gt", "gu", "gw", "gy", "hk", "hm", "hn", "hr", "ht", "hu", "id", "ie", "il", "in", "io", 
    "iq", "ir", "is", "it", "jm", "jo", "jp", "ke", "kg", "kh", "ki", "km", "kn", "kp", "kr", "kw", 
    "ky", "kz", "la", "lb", "lc", "li", "lk", "lr", "ls", "lt", "lu", "lv", "ly", "ma", "mc", "md", 
    "mg", "mh", "ml", "mm", "mn", "mo", "mp", "mq", "mr", "ms", "mt", "mv", "mw", "mx", "my", "mz",
    "na", "nc", "ne", "nf", "ng", "ni", "nl", "no", "np", "nr", "nt", "nu", "nz", "om", "qa", "pa", 
    "pe", "pf", "pg", "ph", "pk", "pl", "pm", "pn", "pr", "pt", "pw", "py", "re", "ro", "ru", "rw", 
    "sa", "sb", "sc", "sd", "se", "sg", "sh", "si", "sj", "sk", "sl", "sm", "sn", "so", "sr", "st", 
    "su", "sy", "sz", "tc", "td", "tf", "tg", "th", "tj", "tk", "tm", "tn", "to", "tp", "tr", "tt", 
    "tv", "tw", "tz", "ua", "ug", "uk", "us", "uy", "va", "vc", "ve", "vg", "vn", "vu", "wf", "ws", 
    "ye", "yu", "za", "zm", "zr", "zw"
};

static {   
    StringBuilder sb = new StringBuilder();   
    sb.append("(");   
    for (int i = 0; i < ext.length; i++) {      
        sb.append(ext[i]);      
        sb.append("|");   
    }   
    sb.deleteCharAt(sb.length() - 1);   
    sb.append(")");   
    // final pattern str
    String pattern = "((https?|s?ftp|irc[6s]?|git|afp|telnet|smb)://)?((\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3})|((www\\.|[a-zA-Z\\.\\-]+\\.)?[a-zA-Z0-9\\-]+\\." + sb.toString() + "(:[0-9]{1,5})?))((/[a-zA-Z0-9\\./,;\\?'\\+&%\\$#=~_\\-]*)|([^\\u4e00-\\u9fa5\\s0-9a-zA-Z\\./,;\\?'\\+&%\\$#=~_\\-]*))";   
    // Log.v(TAG, "pattern = " + pattern);   
    WEB_URL = Pattern.compile(pattern);
}

设置了Linkify.addLinks后导致ClickableSpan的点击无法拦截

设置了Linkify.addLinks后导致ClickableSpan的点击无法拦截,会调用隐式意图打开配置了filter的Activity 使用下面步骤:

public static void interceptHyperLink(TextView tv, ChatContext chatContext, int msg_type,
      long msg_id, String send_ucid) {
    tv.setMovementMethod(LinkMovementMethod.getInstance());
    CharSequence text = tv.getText();
    if (text instanceof Spannable) {
      SpannableStringBuilder spannableStringBuilder = new SpannableStringBuilder(text.toString());
      Linkify.addLinks(spannableStringBuilder, CommonPatterns.CHINESE_PHONE_NUMBER, PHONE_SCHEME);
      Linkify.addLinks(spannableStringBuilder, CommonPatterns.WEB_URL, HTTP_SCHEME);
      Linkify.addLinks(spannableStringBuilder, CommonPatterns.AUTOLINK_WEB_URL, HTTP_SCHEME);

      URLSpan[] urlSpans = spannableStringBuilder.getSpans(0, spannableStringBuilder.length(), URLSpan.class);
      if (urlSpans.length == 0) {
        return;
      }
      for (URLSpan uri : urlSpans) {
        String url = uri.getURL();
        CustomURLSpan custom = new CustomURLSpan(url, chatContext, msg_type, msg_id, send_ucid);
        int spanStart = spannableStringBuilder.getSpanStart(uri);
        int spanEnd = spannableStringBuilder.getSpanEnd(uri);
        spannableStringBuilder.removeSpan(uri);
        spannableStringBuilder.setSpan(custom, spanStart,
            spanEnd, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
      }
      tv.setText(spannableStringBuilder);
    }
  }

当需要使自定义模式和内置模式web，phone等一起被识别时，一定要先声明内置模式，然后再声明自定义模式，而且不能在xml中通过autoLink属性声明，否则自定义模式不起作用。因为在设置内置模式时，会先删除已有模式。

使用该方式拦截点击事件的话,Linkify.addLinks(spannableStringBuilder, CommonPatterns.WEB_URL, HTTP_SCHEME); http和https需要分开,如果不分开,https的链接也会被加上http变成http://http://xxx,同时HTTP_SCHEME不能设置为空,如果设置为空的话,不再判断系统的scheme头,如baidu.com不会自动增加http变成https://baidu.com.