Html列表标签在android文本视图中不起作用。我能做什么?

String str="A dressy take on classic gingham in a soft, textured weave of stripes that resembles twill.  Take a closer look at this one.<ul><li>Trim, tailored fit for a bespoke feel</li><li>Medium spread collar, one-button mitered barrel cuffs</li><li>Applied placket with genuine mother-of-pearl buttons</li><li>;Split back yoke, rear side pleats</li><li>Made in the U.S.A. of 100% imported cotton.</li></ul>";

textview.setText(Html.fromHtml(str));

webview.loadData(str,"text/html","utf-8");

import org.xml.sax.XMLReader;
import android.text.Editable;
import android.text.Html.TagHandler;
public class ListTagHandler implements TagHandler {
    boolean first = true;
    @Override
    public void handleTag(boolean opening, String tag, Editable output, XMLReader xmlReader) {
        // TODO Auto-generated method stub
        if (tag.equals("li")) {
            char lastChar = 0;
            if (output.length() > 0)
                lastChar = output.charAt(output.length() - 1);
            if (first) {
                if (lastChar == '\n')
                    output.append("\t•  ");
                    output.append("\n\t•  ");
                first = false;
            } else {
                first = true;
}

public class ListTagHandler implements TagHandler
    private int                 m_index     = 0;
    private List< String >  m_parents   = new ArrayList< String >( );
    @Override
    public void handleTag( final boolean opening, final String tag, Editable output,    final XMLReader xmlReader )
        if( tag.equals( "ul" ) || tag.equals( "ol" ) || tag.equals( "dd" ) )
            if( opening )
                m_parents.add( tag );
            else m_parents.remove( tag );
            m_index = 0;
        else if( tag.equals( "li" ) && !opening ) handleListTag( output );
    private void handleListTag( Editable output )
        if( m_parents.get(m_parents.size()-1 ).equals( "ul" ) )
            output.append( "\n" );
            String[ ] split = output.toString( ).split( "\n" );
            int lastIndex = split.length - 1;
            int start = output.length( ) - split[ lastIndex ].length( ) - 1;
            output.setSpan( new BulletSpan( 15 * m_parents.size( ) ), start, output.length( ), 0 );
        else if( m_parents.get(m_parents.size()-1).equals( "ol" ) )
            m_index++ ;
            output.append( "\n" );
            String[ ] split = output.toString( ).split( "\n" );
            int lastIndex = split.length - 1;
            int start = output.length( ) - split[ lastIndex ].length( ) - 1;
            output.insert( start, m_index + ". " );
            output.setSpan( new LeadingMarginSpan.Standard( 15 * m_parents.size( ) ), start, output.length( ), 0 );
}

myTextView.setText(Html.fromHtml("your string", null, new CustomTagHandler()));

private static class CustomTagHandler implements TagHandler
      int level = 0;
      private LinkedList<Tag> parentList = new LinkedList<DetailFragment.CustomTagHandler.Tag>();
      private HashMap<Integer, Integer> levelWiseCounter = new HashMap<Integer, Integer>();
      @Override
      public void handleTag(boolean opening, String tag, Editable output, XMLReader xmlReader)
         if (tag.equalsIgnoreCase("ul") || tag.equalsIgnoreCase("ol"))
            if (opening)
               if (tag.equalsIgnoreCase("ul"))
                  parentList.push(Tag.UL);
                  parentList.push(Tag.OL);
               level++;
               if (!parentList.isEmpty())
                  parentList.pop();
                  //remove counter at that level, in any present.
                  levelWiseCounter.remove(level);
               level--;
               if (level < 0)
                  level = 0;
         else if (tag.equalsIgnoreCase("li"))
            if (opening && level > 0)
               //new line check
               int length = output.toString().length();
               if (length > 0 && (output.toString().charAt(length - 1) == '\n'))
                  output.append("\n");
               //add tabs as per current level of li
               for (int i = 0; i < level; i++)
                  output.append("\t");
               // append dot or numbers based on parent tag
               if (Tag.UL == parentList.peek())
                  output.append("•");
                  //parent is OL. Check current level and retreive counter from levelWiseCounter
                  int counter = 1;
                  if (levelWiseCounter.get(level) == null)
                     levelWiseCounter.put(level, 1);
                     counter = levelWiseCounter.get(level) + 1;
                     levelWiseCounter.put(level, counter);
                  output.append(padInt(counter) + ".");
               //trailing tab
               output.append("\t");
       * Add padding so that all numbers are aligned properly. Currently supports padding from 1-99.
       * @param num
       * @return
      private static String padInt(int num)
         if (num < 10)
            return " " + num;
         return "" + num;
      private enum Tag
         UL, OL
   }

    @Override
public void handleTag(boolean opening, String tag, Editable output, XMLReader xmlReader) {
    if (tag.equalsIgnoreCase("li")) {
        if (opening) {
            output.append("\u2022 ");
        } else {
            output.append("\n");
}

@Override
public void handleTag(final boolean opening, final String tag, final Editable output, final XMLReader xmlReader) {
    if (UL_TAG.equalsIgnoreCase(tag)) {
        if (opening) {   // handle <ul>
            lists.push(new Ul());
        } else {   // handle </ul>
            lists.pop();
            if (output.length() > 0 && output.charAt(output.length() - 1) == '\n') {
                output.delete(output.length() - 1, output.length());
    } else if (OL_TAG.equalsIgnoreCase(tag)) {
        if (opening) {   // handle <ol>
            lists.push(new Ol()); // use default start index of 1
        } else {   // handle </ol>
            lists.pop();
            if (output.length() > 0 && output.charAt(output.length() - 1) == '\n') {
                output.delete(output.length() - 1, output.length());
    } else if (LI_TAG.equalsIgnoreCase(tag)) {
        if (opening) {   // handle <li>
            lists.peek().openItem(output);
        } else {   // handle </li>
            lists.peek().closeItem(output, lists.size());
    } else {
        Log.d("TagHandler", "Found an unsupported tag " + tag);
}

myHTML.replaceAll("</ul>","</customTag>").replaceAll("<ul>","<customTag>");
//likewise for li

//now my handler can handle the customtags. it was ignoring them after nougat. 
 public class UlTagHandler implements Html.TagHandler {
        //for ul in nougat and up this tagHandler is completely ignored
        @Override
        public void handleTag(boolean opening, String tag, Editable output,
                              XMLReader xmlReader) {
            if (tag.equals("customtag2") && opening)
            output.append("\n\t\u25CF\t");
        if (tag.equals("customtag2") && !opening)
            output.append("\n");
    }

    class UlTagHandler : Html.TagHandler {
    override fun handleTag(
        opening: Boolean, tag: String, output: Editable,

Html列表标签在android文本视图中不起作用。我能做什么?

9 个回答