Java Spanned.getSpanStart方法代码示例

import android.text.Spanned; //导入方法依赖的package包/类
/**
 * Taken from Stack Overflow - https://stackoverflow.com/a/17201376/6052295
 * Adds links to a HTML string
 *
 * @param html        the HTML string to add links to
 * @param linkifyMask the link type
 * @return The spannable text with clickable links
 */

public static Spannable linkifyHtml(String html, int linkifyMask) {
    Spanned text = fromHtml(fromHtml(html).toString());
    URLSpan[] currentSpans = text.getSpans(0, text.length(), URLSpan.class);

    SpannableString buffer = new SpannableString(text);
    Linkify.addLinks(buffer, linkifyMask);

    for (URLSpan span : currentSpans) {
        int end = text.getSpanEnd(span);
        int start = text.getSpanStart(span);
        buffer.setSpan(span, start, end, 0);
    }
    return buffer;
}
 

import android.text.Spanned; //导入方法依赖的package包/类
/**
 * 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);
}
 

import android.text.Spanned; //导入方法依赖的package包/类
/**
 * Copies the spans from the region <code>start...end</code> in
 * <code>source</code> to the region
 * <code>destoff...destoff+end-start</code> in <code>dest</code>.
 * Spans in <code>source</code> that begin before <code>start</code>
 * or end after <code>end</code> but overlap this range are trimmed
 * as if they began at <code>start</code> or ended at <code>end</code>.
 * Only SuggestionSpans that don't have the SPAN_PARAGRAPH span are copied.
 *
 * This code is almost entirely taken from {@link TextUtils#copySpansFrom}, except for the
 * kind of span that is copied.
 *
 * @throws IndexOutOfBoundsException if any of the copied spans
 * are out of range in <code>dest</code>.
 */
public static void copyNonParagraphSuggestionSpansFrom(Spanned source, int start, int end,
        Spannable dest, int destoff) {
    Object[] spans = source.getSpans(start, end, SuggestionSpan.class);

    for (int i = 0; i < spans.length; i++) {
        int fl = source.getSpanFlags(spans[i]);
        // We don't care about the PARAGRAPH flag in LatinIME code. However, if this flag
        // is set, Spannable#setSpan will throw an exception unless the span is on the edge
        // of a word. But the spans have been split into two by the getText{Before,After}Cursor
        // methods, so after concatenation they may end in the middle of a word.
        // Since we don't use them, we can just remove them and avoid crashing.
        fl &= ~Spanned.SPAN_PARAGRAPH;

        int st = source.getSpanStart(spans[i]);
        int en = source.getSpanEnd(spans[i]);

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

        dest.setSpan(spans[i], st - start + destoff, en - start + destoff,
                     fl);
    }
}
 

import android.text.Spanned; //导入方法依赖的package包/类
@Override
public void onClick(View widget) {
    CharSequence text = ((TextView) widget).getText();

    Spanned s = (Spanned) text;
    int start = s.getSpanStart(this);
    int end = s.getSpanEnd(this);

    mOnHashTagClickListener.onHashTagClicked(text.subSequence(start, end).toString());
}
 

import android.text.Spanned; //导入方法依赖的package包/类
@Override
public void onClick(View textView) {
    TextView tv = (TextView) 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());
}
 

import android.text.Spanned; //导入方法依赖的package包/类
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);
}
 

import android.text.Spanned; //导入方法依赖的package包/类
@Override
public void draw(Canvas canvas, CharSequence text, int start, int end, float x, int top, int y, int bottom, Paint paint) {
    SimpleChipDrawable chipDrawable = ((SimpleChipDrawable) getDrawable());
    Paint myPaint = chipDrawable.getPaint();
    if (text instanceof Spanned) {
        Spanned spannable = (Spanned) text;
        int style = 0;
        int fgColor = -1;
        int fgColorS = -1;
        for (Object o : spannable.getSpans(start, end, Object.class)) {
            int spanStart = spannable.getSpanStart(o);
            if (spanStart > start)
                continue;
            if (o instanceof ForegroundColorSpan) {
                if (spanStart > fgColorS) {
                    fgColor = ((ForegroundColorSpan) o).getForegroundColor();
                    fgColorS = spanStart;
                }
            } else if (o instanceof BackgroundColorSpan) {
                int c = paint.getColor();
                paint.setColor(((BackgroundColorSpan) o).getBackgroundColor());
                canvas.drawRect(x, top, x + chipDrawable.getBounds().width(), bottom, paint);
                paint.setColor(c);
            } else if (o instanceof StyleSpan) {
                style |= ((StyleSpan) o).getStyle();
            }
        }
        if (myPaint != null) {
            if (fgColor != -1)
                myPaint.setColor(fgColor);
            else
                chipDrawable.setDefaultTextColor();
            myPaint.setTypeface(Typeface.create(Typeface.DEFAULT, style));
        }
    }
    super.draw(canvas, text, start, end, x, top, y, bottom, paint);
}
 

import android.text.Spanned; //导入方法依赖的package包/类
@Override
public boolean onTouchEvent(TextView widget, Spannable buffer, MotionEvent event) {
    //http://stackoverflow.com/questions/1697084/handle-textview-link-click-in-my-android-app
    int action = event.getAction();
    if (action == MotionEvent.ACTION_UP) {
        int x = (int) event.getX();
        int y = (int) event.getY();

        x -= widget.getTotalPaddingLeft();
        y -= widget.getTotalPaddingTop();

        x += widget.getScrollX();
        y += widget.getScrollY();

        Layout layout = widget.getLayout();
        int line = layout.getLineForVertical(y);
        int off = layout.getOffsetForHorizontal(line, x);

        URLSpan[] link = buffer.getSpans(off, off, URLSpan.class);
        if (link.length > 0) {
            URLSpan span = link[0];
            String url = span.getURL();
            Spanned s = (Spanned) widget.getText();
            int start = s.getSpanStart(span);
            int end = s.getSpanEnd(span);
            //http://stackoverflow.com/a/19750721/895797
            String title = null;
            if (start != -1 && end != -1) {
                CharSequence wordThatWasClicked = s.subSequence(start, end);
                title = wordThatWasClicked.toString();
            }
            onLinkClicked(widget, url, title);
            return true;
        }
    }
    return super.onTouchEvent(widget, buffer, event);
}
 

import android.text.Spanned; //导入方法依赖的package包/类
@Override
public int reactTagForTouch(float touchX, float touchY) {
  Spanned text = (Spanned) 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 (x >= lineStartX && x <= lineEndX) {
    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 = text.getSpans(index, index, ReactTagSpan.class);

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

  return target;
}
 

import android.text.Spanned; //导入方法依赖的package包/类
/**
 * Gets the suggestion spans that are put squarely on the word, with the exact start
 * and end of the span matching the boundaries of the word.
 * @return the list of spans.
 */
public SuggestionSpan[] getSuggestionSpansAtWord() {
    if (!(mTextAtCursor instanceof Spanned && mWord instanceof Spanned)) {
        return new SuggestionSpan[0];
    }
    final Spanned text = (Spanned)mTextAtCursor;
    // Note: it's fine to pass indices negative or greater than the length of the string
    // to the #getSpans() method. The reason we need to get from -1 to +1 is that, the
    // spans were cut at the cursor position, and #getSpans(start, end) does not return
    // spans that end at `start' or begin at `end'. Consider the following case:
    //              this| is          (The | symbolizes the cursor position
    //              ---- ---
    // In this case, the cursor is in position 4, so the 0~7 span has been split into
    // a 0~4 part and a 4~7 part.
    // If we called #getSpans(0, 4) in this case, we would only get the part from 0 to 4
    // of the span, and not the part from 4 to 7, so we would not realize the span actually
    // extends from 0 to 7. But if we call #getSpans(-1, 5) we'll get both the 0~4 and
    // the 4~7 spans and we can merge them accordingly.
    // Any span starting more than 1 char away from the word boundaries in any direction
    // does not touch the word, so we don't need to consider it. That's why requesting
    // -1 ~ +1 is enough.
    // Of course this is only relevant if the cursor is at one end of the word. If it's
    // in the middle, the -1 and +1 are not necessary, but they are harmless.
    final SuggestionSpan[] spans = text.getSpans(mWordAtCursorStartIndex - 1,
            mWordAtCursorEndIndex + 1, SuggestionSpan.class);
    int readIndex = 0;
    int writeIndex = 0;
    for (; readIndex < spans.length; ++readIndex) {
        final SuggestionSpan span = spans[readIndex];
        // The span may be null, as we null them when we find duplicates. Cf a few lines
        // down.
        if (null == span) continue;
        // Tentative span start and end. This may be modified later if we realize the
        // same span is also applied to other parts of the string.
        int spanStart = text.getSpanStart(span);
        int spanEnd = text.getSpanEnd(span);
        for (int i = readIndex + 1; i < spans.length; ++i) {
            if (span.equals(spans[i])) {
                // We found the same span somewhere else. Read the new extent of this
                // span, and adjust our values accordingly.
                spanStart = Math.min(spanStart, text.getSpanStart(spans[i]));
                spanEnd = Math.max(spanEnd, text.getSpanEnd(spans[i]));
                // ...and mark the span as processed.
                spans[i] = null;
            }
        }
        if (spanStart == mWordAtCursorStartIndex && spanEnd == mWordAtCursorEndIndex) {
            // If the span does not start and stop here, ignore it. It probably extends
            // past the start or end of the word, as happens in missing space correction
            // or EasyEditSpans put by voice input.
            spans[writeIndex++] = spans[readIndex];
        }
    }
    return writeIndex == readIndex ? spans : Arrays.copyOfRange(spans, 0, writeIndex);
}