Java Code Examples for android.text.Spanned#getSpanEnd()

private void init(CharSequence source, int start, int end) {
    int initial = 20;
    mSpans = new Object[initial];
    mSpanData = new int[initial * 3];

    if (source instanceof Spanned) {
        Spanned sp = (Spanned) source;
        for (Object span : sp.getSpans(start, end, Object.class)) {
            if (span instanceof CharacterStyle || span instanceof ParagraphStyle) {
                int st = sp.getSpanStart(span);
                int en = sp.getSpanEnd(span);
                int fl = sp.getSpanFlags(span);

                if (st < start) st = start;
                if (en > end) en = end;

                setSpan(span, st - start, en - start, fl);
            }
        }
    }
}
 

/**
 * Convert a spanned text within a paragraph
 */
private void withinParagraph(final Spanned text, int start, int end) {
    // create sorted set of CharacterStyles
    SortedSet<CharacterStyle> sortedSpans = new TreeSet<>(new Comparator<CharacterStyle>() {
        @Override
        public int compare(CharacterStyle s1, CharacterStyle s2) {
            int start1 = text.getSpanStart(s1);
            int start2 = text.getSpanStart(s2);
            if (start1 != start2)
                return start1 - start2;        // span which starts first comes first

            int end1 = text.getSpanEnd(s1);
            int end2 = text.getSpanEnd(s2);
            if (end1 != end2) return end2 - end1;                // longer span comes first

            // if the paragraphs have the same span [start, end] we compare their name
            // compare the name only because local + anonymous classes have no canonical name
            return s1.getClass().getName().compareTo(s2.getClass().getName());
        }
    });
    List<CharacterStyle> spanList = Arrays.asList(text.getSpans(start, end, CharacterStyle.class));
    sortedSpans.addAll(spanList);

    // process paragraphs/divs
    convertText(text, start, end, sortedSpans);
}
 

/**
 * Convert a spanned text within a paragraph
 */
private void withinParagraph(final Spanned text, int start, int end) {
    // create sorted set of CharacterStyles
    SortedSet<CharacterStyle> sortedSpans = new TreeSet<CharacterStyle>(new Comparator<CharacterStyle>() {
        @Override
        public int compare(CharacterStyle s1, CharacterStyle s2) {
            int start1 = text.getSpanStart(s1);
            int start2 = text.getSpanStart(s2);
            if (start1 != start2)
                return start1 - start2;        // span which starts first comes first

            int end1 = text.getSpanEnd(s1);
            int end2 = text.getSpanEnd(s2);
            if (end1 != end2) return end2 - end1;                // longer span comes first

            // if the paragraphs have the same span [start, end] we compare their name
            // compare the name only because local + anonymous classes have no canonical name
            return s1.getClass().getName().compareTo(s2.getClass().getName());
        }
    });
    List<CharacterStyle> spanList = Arrays.asList(text.getSpans(start, end, CharacterStyle.class));
    sortedSpans.addAll(spanList);

    // process paragraphs/divs
    convertText(text, start, end, sortedSpans);
}
 

/**
 * Do not support cross Span.
 *
 * @param text       text
 * @param parentSpan parentSpan
 * @param start      start index of parentSpan
 * @param end        end index of parentSpan
 * @param paint      TextPaint
 * @return recursive calculated width
 */
public int recursiveGetSizeWithReplacementSpan(CharSequence text, ReplacementSpan parentSpan, @IntRange(from = 0) int start, @IntRange(from = 0) int end, Paint paint) {
  if (text instanceof Spanned) {
    Spanned spannedText = (Spanned) text;
    List<ReplacementSpan> spans = getSortedReplacementSpans(spannedText, start, end);
    if (!spans.isEmpty()) {
      int lastIndexCursor = 0;
      int width = 0;
      for (ReplacementSpan span : spans) {
        if (span == parentSpan) {
          continue;
        }
        int spanStart = spannedText.getSpanStart(span);
        int spanEnd = spannedText.getSpanEnd(span);
        width += parentSpan.getSize(paint, text, lastIndexCursor, spanStart, null);
        width += span.getSize(paint, text, spanStart, spanEnd, null);
        lastIndexCursor = spanEnd;
      }
      if (lastIndexCursor < end) {
        width += parentSpan.getSize(paint, text, lastIndexCursor, end, null);
      }
      return width;
    }
  }
  return parentSpan.getSize(paint, text, start, end, null);
}
 

private void init(CharSequence source, int start, int end) {
    int initial = 20;
    mSpans = new Object[initial];
    mSpanData = new int[initial * 3];

    if (source instanceof Spanned) {
        Spanned sp = (Spanned) source;
        for (Object span : sp.getSpans(start, end, Object.class)) {
            if (span instanceof CharacterStyle || span instanceof ParagraphStyle) {
                int st = sp.getSpanStart(span);
                int en = sp.getSpanEnd(span);
                int fl = sp.getSpanFlags(span);

                if (st < start) st = start;
                if (en > end) en = end;

                setSpan(span, st - start, en - start, fl);
            }
        }
    }
}
 

private static int getSpanLength(Spanned sp, int start, int end, Context context) {
    // TODO: there's a situation where the span can lose its annotations:
    //   - add an auto-complete contact
    //   - add another auto-complete contact
    //   - delete that second contact and keep deleting into the first
    //   - we lose the annotation and can no longer get the span.
    // Need to fix this case because it breaks auto-complete contacts with commas in the name.
    Annotation[] a = sp.getSpans(start, end, Annotation.class);
    if (a.length > 0) {
        return sp.getSpanEnd(a[0]);
    }
    return 0;
}
 

private void convertText(Spanned text, int start, int end, SortedSet<CharacterStyle> spans) {
    while (start < end) {

        // get first CharacterStyle
        CharacterStyle span = spans.isEmpty() ? null : spans.first();
        int spanStart = span == null ? Integer.MAX_VALUE : text.getSpanStart(span);
        int spanEnd = span == null ? Integer.MAX_VALUE : text.getSpanEnd(span);

        if (start < spanStart) {

            // no paragraph, just plain text
            escape(text, start, Math.min(end, spanStart));
            start = spanStart;

        } else {

            // CharacterStyle found

            spans.remove(span);

            if (handleStartTag(span)) {
                convertText(text, Math.max(spanStart, start), Math.min(spanEnd, end), spans);
            }
            handleEndTag(span);

            start = spanEnd;
        }

    }
}
 

/**
 * Utility that copies spans from {@code fromSpan} to {@code toSpan}.
 *
 * @param toSpan Spannable that is supposed to contain fromSpan.
 * @param fromSpan Spannable that could contain spans that would be copied to toSpan.
 * @param toSpanStartIndex Starting index of occurrence fromSpan in toSpan.
 */
private static void copySpans(Spannable toSpan, Spanned fromSpan, int toSpanStartIndex) {
  if (toSpanStartIndex < 0 || toSpanStartIndex >= toSpan.length()) {
    LogUtils.e(
        TAG,
        "startIndex parameter (%d) is out of toSpan length %d",
        toSpanStartIndex,
        toSpan.length());
    return;
  }

  Object[] spans = fromSpan.getSpans(0, fromSpan.length(), Object.class);
  if (spans != null && spans.length > 0) {
    for (Object span : spans) {
      int spanStartIndex = fromSpan.getSpanStart(span);
      int spanEndIndex = fromSpan.getSpanEnd(span);
      if (spanStartIndex >= spanEndIndex) {
        continue;
      }
      int spanFlags = fromSpan.getSpanFlags(span);
      toSpan.setSpan(
          span,
          (toSpanStartIndex + spanStartIndex),
          (toSpanStartIndex + spanEndIndex),
          spanFlags);
    }
  }
}
 

static BetterLinkMovementExtended.ClickableSpanWithText ofSpan(TextView textView, ClickableSpan span) {
    Spanned s = (Spanned) textView.getText();
    String text;
    if (span instanceof URLSpan) {
        text = ((URLSpan) span).getURL();
    } else {
        int start = s.getSpanStart(span);
        int end = s.getSpanEnd(span);
        text = s.subSequence(start, end).toString();
    }
    return new BetterLinkMovementExtended.ClickableSpanWithText(span, text);
}
 

@Override
public void onClick(View textView) {
    Spanned s = (Spanned) tv.getText();
    int start = s.getSpanStart(this);
    int end = s.getSpanEnd(this);
    clickListener.onClick(type, s.subSequence(start, end).toString().trim());
}
 

private void convertText(Spanned text, int start, int end, SortedSet<CharacterStyle> spans) {
    while (start < end) {

        // get first CharacterStyle
        CharacterStyle span = spans.isEmpty() ? null : spans.first();
        int spanStart = span == null ? Integer.MAX_VALUE : text.getSpanStart(span);
        int spanEnd = span == null ? Integer.MAX_VALUE : text.getSpanEnd(span);

        if (start < spanStart) {

            // no paragraph, just plain text
            escape(text, start, Math.min(end, spanStart));
            start = spanStart;

        } else {

            // CharacterStyle found

            spans.remove(span);

            if (handleStartTag(span)) {
                convertText(text, Math.max(spanStart, start), Math.min(spanEnd, end), spans);
            }
            handleEndTag(span);

            start = spanEnd;
        }

    }
}
 

public static void draw(TextView textView, Canvas canvas) {
	Layout layout = textView.getLayout();
	if (layout != null) {
		CharSequence text = textView.getText();
		if (text instanceof Spanned) {
			Spanned spanned = (Spanned) text;
			OverlineSpan[] spans = spanned.getSpans(0, spanned.length(), OverlineSpan.class);
			if (spans != null && spans.length > 0) {
				int paddingTop = textView.getTotalPaddingTop();
				int paddingLeft = textView.getPaddingLeft();
				int shift = (int) (textView.getTextSize() * 8f / 9f);
				float thickness = textView.getTextSize() / 15f - 0.25f;
				int color = textView.getCurrentTextColor();
				PAINT.setColor(color);
				PAINT.setStrokeWidth(thickness);
				for (OverlineSpan span : spans) {
					int start = spanned.getSpanStart(span);
					int end = spanned.getSpanEnd(span);
					int lineStart = layout.getLineForOffset(start);
					int lineEnd = layout.getLineForOffset(end);
					for (int i = lineStart; i <= lineEnd; i++) {
						float left = i == lineStart ? layout.getPrimaryHorizontal(start) : layout.getLineLeft(i);
						float right = i == lineEnd ? layout.getPrimaryHorizontal(end) : layout.getLineRight(i);
						float top = layout.getLineBaseline(i) - shift + 0.5f;
						canvas.drawLine(paddingLeft + left, paddingTop + top, paddingLeft + right,
								paddingTop + top, PAINT);
					}
				}
			}
		}
	}
}
 

private void drawBackground(@NonNull Canvas canvas) {
    int frameLeft = 0;
    int frameRight = (int) (mWidth + 0.5f);

    int lineCount = lineList.size();
    for (int i = 0; i < lineCount; i++) {
        ComposedLine composedLine = lineList.get(i);
        Object[] lineSpans = composedLine.getSpans();

        for (Object style : lineSpans) {
            if (style instanceof LineBackgroundSpan) {
                LineBackgroundSpan span = (LineBackgroundSpan) style;

                Spanned sourceText = (Spanned) source;
                int spanStart = sourceText.getSpanStart(span);
                int spanEnd = sourceText.getSpanEnd(span);

                int lineStart = composedLine.getCharStart();
                int lineEnd = composedLine.getCharEnd();
                if (lineStart >= spanEnd || lineEnd <= spanStart) {
                    continue;
                }

                Paint paint = lazyPaint();
                int lineTop = (int) (composedLine.getTop() + 0.5f);
                int lineBaseline = (int) (composedLine.getOriginY() + 0.5f);
                int lineBottom = (int) (composedLine.getTop() + composedLine.getHeight() + 0.5f);

                span.drawBackground(canvas, paint, frameLeft, frameRight,
                                    lineTop, lineBaseline, lineBottom,
                                    sourceText, lineStart, lineEnd, i);
            }
        }
    }
}
 

@Override
public void onClick(View widget) {
    if (null != mOnClickableSpanListener) {
        TextView tv = (TextView) widget;
        Spanned spanned = (Spanned) tv.getText();
        mStartSpanIndex = spanned.getSpanStart(this);
        mEndSpanIndex = spanned.getSpanEnd(this);
        mClickText = spanned.subSequence(mStartSpanIndex, mEndSpanIndex).toString();
        mOnClickableSpanListener.onClick(tv, this);
    }
}
 

public char charAt(int i) {
    if (mSource instanceof Spanned) {
        Spanned sp = (Spanned) mSource;

        int st = sp.getSpanStart(TextKeyListener.ACTIVE);
        int en = sp.getSpanEnd(TextKeyListener.ACTIVE);

        if (i >= st && i < en) {
            return mSource.charAt(i);
        }

        Visible[] visible = sp.getSpans(0, sp.length(), Visible.class);

        for (int a = 0; a < visible.length; a++) {
            if (sp.getSpanStart(visible[a].mTransformer) >= 0) {
                st = sp.getSpanStart(visible[a]);
                en = sp.getSpanEnd(visible[a]);

                if (i >= st && i < en) {
                    return mSource.charAt(i);
                }
            }
        }
    }

    return DOT;
}
 

private static int getSpanLength(Spanned sp, int start, int end, Context context) {
    // TODO: there's a situation where the span can lose its annotations:
    //   - add an auto-complete contact
    //   - add another auto-complete contact
    //   - delete that second contact and keep deleting into the first
    //   - we lose the annotation and can no longer get the span.
    // Need to fix this case because it breaks auto-complete contacts with commas in the name.
    Annotation[] a = sp.getSpans(start, end, Annotation.class);
    if (a.length > 0) {
        return sp.getSpanEnd(a[0]);
    }
    return 0;
}
 

/**
 * Create a new SpannableStringBuilder containing a copy of the
 * specified slice of the specified text, including its spans if any.
 */
public SpannableStringBuilder(CharSequence text, int start, int end) {
    int srclen = end - start;

    int len = ArrayUtils.idealCharArraySize(srclen + 1);
    mText = new char[len];
    mGapStart = srclen;
    mGapLength = len - srclen;

    TextUtils.getChars(text, start, end, mText, 0);

    mSpanCount = 0;
    int alloc = ArrayUtils.idealIntArraySize(0);
    mSpans = new Object[alloc];
    mSpanStarts = new int[alloc];
    mSpanEnds = new int[alloc];
    mSpanFlags = new int[alloc];

    if (text instanceof Spanned) {
        Spanned sp = (Spanned) text;
        Object[] spans = sp.getSpans(start, end, Object.class);

        for (int i = 0; i < spans.length; i++) {
            if (spans[i] instanceof NoCopySpan) {
                continue;
            }

            int st = sp.getSpanStart(spans[i]) - start;
            int en = sp.getSpanEnd(spans[i]) - start;
            int fl = sp.getSpanFlags(spans[i]);

            if (st < 0)
                st = 0;
            if (st > end - start)
                st = end - start;

            if (en < 0)
                en = 0;
            if (en > end - start)
                en = end - start;

            if ( st <= en ) {
                setSpan(spans[i], st, en, fl);
            }
        }
    }
}
 

@Override
public int reactTagForTouch(float touchX, float touchY) {
  CharSequence text = getText();
  int target = getId();

  int x = (int) touchX;
  int y = (int) touchY;

  Layout layout = getLayout();
  if (layout == null) {
    // If the layout is null, the view hasn't been properly laid out yet. Therefore, we can't find
    // the exact text tag that has been touched, and the correct tag to return is the default one.
    return target;
  }
  int line = layout.getLineForVertical(y);

  int lineStartX = (int) layout.getLineLeft(line);
  int lineEndX = (int) layout.getLineRight(line);

  // TODO(5966918): Consider extending touchable area for text spans by some DP constant
  if (text instanceof Spanned && x >= lineStartX && x <= lineEndX) {
    Spanned spannedText = (Spanned) text;
    int index = layout.getOffsetForHorizontal(line, x);

    // We choose the most inner span (shortest) containing character at the given index
    // if no such span can be found we will send the textview's react id as a touch handler
    // In case when there are more than one spans with same length we choose the last one
    // from the spans[] array, since it correspond to the most inner react element
    ReactTagSpan[] spans = spannedText.getSpans(index, index, ReactTagSpan.class);

    if (spans != null) {
      int targetSpanTextLength = text.length();
      for (int i = 0; i < spans.length; i++) {
        int spanStart = spannedText.getSpanStart(spans[i]);
        int spanEnd = spannedText.getSpanEnd(spans[i]);
        if (spanEnd > index && (spanEnd - spanStart) <= targetSpanTextLength) {
          target = spans[i].getReactTag();
          targetSpanTextLength = (spanEnd - spanStart);
        }
      }
    }
  }

  return target;
}
 

public static int getFloatingPosition(Spanned spanned) {
    for (FloatingMarginSpan span : spanned.getSpans(0, spanned.length(), FloatingMarginSpan.class)) {
        return spanned.getSpanEnd(span);
    }
    return -1;
}
 

/**
 * Logs the type, position and args of spans which attach to given text, but only if log priority
 * is equal to Log.VERBOSE. Format is {type 'spanned text' extra-data} {type 'other text'
 * extra-data} ..."
 *
 * @param text Text to be logged
 */
public static String spansToStringForLogging(CharSequence text) {
  if (!LogUtils.shouldLog(Log.VERBOSE)) {
    return null;
  }

  if (isEmptyOrNotSpannableStringType(text)) {
    return null;
  }

  Spanned spanned = (Spanned) text;
  ParcelableSpan[] spans = spanned.getSpans(0, text.length(), ParcelableSpan.class);
  if (spans.length == 0) {
    return null;
  }

  StringBuilder stringBuilder = new StringBuilder();
  for (ParcelableSpan span : spans) {
    stringBuilder.append("{");
    // Span type.
    stringBuilder.append(span.getClass().getSimpleName());

    // Span text.
    int start = spanned.getSpanStart(span);
    int end = spanned.getSpanEnd(span);
    if (start < 0 || end < 0 || start == end) {
      stringBuilder.append(" invalid index:[");
      stringBuilder.append(start);
      stringBuilder.append(",");
      stringBuilder.append(end);
      stringBuilder.append("]}");
      continue;
    } else {
      stringBuilder.append(" '");
      stringBuilder.append(spanned, start, end);
      stringBuilder.append("'");
    }

    // Extra data.
    if (span instanceof LocaleSpan) {
      LocaleSpan localeSpan = (LocaleSpan) span;
      if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {
        Locale locale = localeSpan.getLocale();
        if (locale != null) {
          stringBuilder.append(" locale=");
          stringBuilder.append(locale);
        }
      } else {
        LocaleList localeList = localeSpan.getLocales();
        int size = localeList.size();
        if (size > 0) {
          stringBuilder.append(" locale=[");
          for (int i = 0; i < size - 1; i++) {
            stringBuilder.append(localeList.get(i));
            stringBuilder.append(",");
          }
          stringBuilder.append(localeList.get(size - 1));
          stringBuilder.append("]");
        }
      }

    } else if (span instanceof TtsSpan) {
      TtsSpan ttsSpan = (TtsSpan) span;
      stringBuilder.append(" ttsType=");
      stringBuilder.append(ttsSpan.getType());
      PersistableBundle bundle = ttsSpan.getArgs();
      Set<String> keys = bundle.keySet();
      if (!keys.isEmpty()) {
        for (String key : keys) {
          stringBuilder.append(" ");
          stringBuilder.append(key);
          stringBuilder.append("=");
          stringBuilder.append(bundle.get(key));
        }
      }
    } else if (span instanceof URLSpan) {
      URLSpan urlSpan = (URLSpan) span;
      stringBuilder.append(" url=");
      stringBuilder.append(urlSpan.getURL());
    }
    stringBuilder.append("}");
  }
  return stringBuilder.toString();
}