Android Open Source - Hash-Tags-Android Tag Selecting Textview

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Back to project page Hash-Tags-Android.

License

The source code is released under:

MIT License

Java Source Code

/*
 * Class handling the hash tags in a string.
 *  @auther Ramesh M Nair/*  w  ww.j a v  a  2 s. c o  m*/
 * 
 * */

package com.hashtagandroid;

import android.graphics.Color;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.SpannableStringBuilder;
import android.text.TextPaint;
import android.text.method.LinkMovementMethod;
import android.text.style.ClickableSpan;
import android.util.Log;
import android.view.View;
import android.widget.TextView;

import com.hashtagandroid.interfaces.TagClick;

public class TagSelectingTextview {

  String mhastTagColor;
  TagClick mTagClick;
  int mHypeLinkEnabled;

  public SpannableStringBuilder addClickablePart(String nTagString,
      TagClick TagClick, int hypeLinkEnabled, String hastTagColor) {

    this.mhastTagColor = hastTagColor;

    this.mHypeLinkEnabled = hypeLinkEnabled;

    this.mTagClick = TagClick;

    SpannableStringBuilder string = new SpannableStringBuilder(nTagString);

    int start = -1;
    for (int i = 0; i < nTagString.length(); i++) {
      if (nTagString.charAt(i) == '#') {
        start = i;
      } else if (nTagString.charAt(i) == ' '
          || (i == nTagString.length() - 1 && start != -1)) {
        if (start != -1) {
          if (i == nTagString.length() - 1) {
            i++; // case for if hash is last word and there is no
                // space after word
          }

          final String tag = nTagString.substring(start, i);
          string.setSpan(new ClickableSpan() {

            @Override
            public void onClick(View widget) {
              
              // Click on each tag will get here
              
              Log.d("TAg--HAsh", String.format("Clicked", tag));
              mTagClick.clickedTag(tag);
            }

            @Override
            public void updateDrawState(TextPaint ds) {
              
              // color for the hash tag
              ds.setColor(Color.parseColor(mhastTagColor));
              
              if (mHypeLinkEnabled == 0) {
                ds.setUnderlineText(false);// Disable the
                              // underline for
                              // hash Tags.
              } else {
                ds.setUnderlineText(true);// Enables the
                              // underline for
                              // hash Tags.

              }
            }
          }, start, i, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
          start = -1;
        }
      }
    }

    return string;
  }

}

Java Source Code List

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