android TextView中识别多个url并分别点击跳转方法详解

实现方案：

我们直接参考实例代码：

private string pattern =
    "((http|ftp|https)://)(([a-za-z0-9\\._-]+\\.[a-za-z]{2,6})|([0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}))(:[0-9]{1,4})*(/[a-za-z0-9\\&%_\\./-~-]*)?|(([a-za-z0-9\\._-]+\\.[a-za-z]{2,6})|([0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}))(:[0-9]{1,4})*(/[a-za-z0-9\\&%_\\./-~-]*)?";

pattern r = pattern.compile(pattern);
matcher m;
mtv.settext(identifyurl(richurl.msg));

public spannablestringbuilderforallvers identifyurl(charsequence text) {
  charsequence contexttext;
  charsequence clicktext;
  text = text == null ? "" : text;
  //以下用于拼接本来存在的spantext
  spannablestringbuilderforallvers span = new spannablestringbuilderforallvers(text);
  clickablespan[] clickablespans = span.getspans(0, text.length(), clickablespan.class);
  if (clickablespans.length > 0) {
    int start = 0;
    int end = 0;
    for (int i = 0; i < clickablespans.length; i++) {
      start = span.getspanstart(clickablespans[0]);
      end = span.getspanend(clickablespans[i]);
    }
    //可点击文本后面的内容页
    contexttext = text.subsequence(end, text.length());
    //可点击文本
    clicktext = text.subsequence(start, end);
  } else {
    contexttext = text;
    clicktext = null;
  }
  m = r.matcher(contexttext);
  //匹配成功
  while (m.find()) {
    //得到网址数m.group()
    if (m.start() < m.end()) {
      span.setspan(new linkclickspan(m.group(), m.group(), murlspanclicklistener),
          m.start(), m.end(), spanned.span_inclusive_exclusive);
    }
  }
  return span;
}

private static final string https = "https://";
private static final string http = "http://";
private static final string ftp = "ftp://";

public static boolean hasneturlhead(string url) {
  return (!textutils.isempty(url)) && (url.startswith(http) || url.startswith(https) || url.startswith(ftp));
}

private urlspanclicklistener murlspanclicklistener = new urlspanclicklistener() {
  @override
  public void onclick(view view, string url, string content) {
    if (textutils.isempty(url)) {
      return;
    }
    matcher url_matcher = patterns.web_url.matcher(url);
    if (url_matcher.matches()) {
      string tempurl;
      if (hasneturlhead(url)) {
        tempurl = url;
      } else {
        tempurl = https + url;
      }
      //通过webview打开相应的url

      //bundle bundle = new bundle();
      //bundle.putstring(webcordovabasefragment.extra_url, tempurl);
      //bundle.putboolean(webcordovabasefragment.enable_web_title, true);
      //webviewactivity.presentweb(utilities.getapplicationcontext(), webviewactivity.class, webcommonfragment.class, content, bundle);
    }
  }
};

public interface urlspanclicklistener {
  void onclick(view view, string url, string content);
}

public static class linkclickspan extends clickablespan {
  private int mcolor = utilities.getapplicationcontext().getresources().getcolor(r.color.yc_color_007aff_cbn);
  private string murl;
  private string mcontent;
  urlspanclicklistener mclicklistener;

  public linkclickspan(string url, string content, urlspanclicklistener onclicklistener) {
    super();
    murl = url;
    mcontent = content;
    mclicklistener = onclicklistener;
  }

  @override
  public void updatedrawstate(textpaint ds) {
    ds.setcolor(mcolor);
    ds.linkcolor = mcolor;
    ds.setunderlinetext(true);//设置是否下划线
    ds.clearshadowlayer();
  }

  @override
  public void onclick(view widget) {
    if (mclicklistener != null) {
      mclicklistener.onclick(widget, murl, mcontent);
    }
  }
}


public class spannablestringbuilderforallvers extends spannablestringbuilder{

  public spannablestringbuilderforallvers() {
    super("");
  }
  public spannablestringbuilderforallvers(charsequence text) {
    super(text, 0, text.length());
  }
  public spannablestringbuilderforallvers(charsequence text, int start, int end){
    super(text,start,end);
  }

  @override
  public spannablestringbuilder append(charsequence text) {
    if (text == null) {
      return this;
    }
    int length = length();
    return (spannablestringbuilderforallvers)replace(length, length, text, 0, text.length());
  }

  /**该方法在原api里面只支持api21或者以上，这里适应低版本*/
  public spannablestringbuilderforallvers append(charsequence text, object what, int flags) {
    if (text == null) {
      return this;
    }
    int start = length();
    append(text);
    setspan(what, start, length(), flags);
    return this;
  }
}


public class clickablespantextview extends appcompattextview {

  private backgroundcolorspan backgroundcolorspan;
  private boolean hasspan;

  public clickablespantextview(context context) {
    super(context);
    init();
  }

  public clickablespantextview(context context, attributeset attrs) {
    super(context, attrs);
    init();
  }

  public clickablespantextview(context context, attributeset attrs, int defstyleattr) {
    super(context, attrs, defstyleattr);
    init();
  }

  private void init() {
    setmovementmethod(linkmovementmethod.getinstance());
    backgroundcolorspan = new backgroundcolorspan(getcontext().getresources().getcolor(r.color.yc_color_4b4b4b_cdg));
  }

  @override
  public boolean ontouchevent(motionevent event) {
    boolean handled = super.ontouchevent(event);
    int action = event.getaction();

    if (!(gettext() instanceof spannable)) {
      return handled;
    }

    spannable spannable = (spannable) gettext();
    if (action == motionevent.action_up || action == motionevent.action_down) {
      int x = (int) event.getx();
      int y = (int) event.gety();
      x -= gettotalpaddingleft();
      y -= gettotalpaddingtop();
      x += getscrollx();
      y += getscrolly();
      layout layout = getlayout();
      int line = layout.getlineforvertical(y);
      int off = layout.getoffsetforhorizontal(line, x);
      if (off >= gettext().length()) {
        int off1 = layout.getoffsetforhorizontal(line, x - gettextsize());
        if (off == off1) {
          return handled;
        }
      }

      clickablespan[] links = spannable.getspans(off, off, clickablespan.class);
      if (links.length > 0) {
        clickablespan clickablespan = links[0];
        int start = spannable.getspanstart(clickablespan);
        int end = spannable.getspanend(clickablespan);

        if (action == motionevent.action_down && !hasspan) {
          spannable.setspan(backgroundcolorspan, start, end, spanned.span_inclusive_inclusive);
          hasspan = true;
        } else if (hasspan) {
          spannable.removespan(backgroundcolorspan);
          hasspan = false;
        }
      }
      return links.length != 0;
    } else {
      if (hasspan && action != motionevent.action_move) {
        spannable.removespan(backgroundcolorspan);
        hasspan = false;
      }
    }
    return handled;
  }
}

以上实例代码大家可以测试下，感谢大家的学习和对的支持。