下面列出了android.text.StaticLayout#getLineStart ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
@Override
public void prepare() {
int width = (int) (mViewprotRect.width() * 0.75f);
StaticLayout staticLayout = new StaticLayout(mText, mTextPaint, width, Layout.Alignment.ALIGN_CENTER, 1, 0, true);
mTextBmList = new ArrayList<BitmapInfo>(staticLayout.getLineCount());
for (int i = 0; i < staticLayout.getLineCount(); i++) {
int s = staticLayout.getLineStart(i);
int e = staticLayout.getLineEnd(i);
Bitmap bitmap = strToBitmap(mText.substring(s, e), mTextPaint);
BitmapTexture bitmapTexture = new BitmapTexture(bitmap);
bitmapTexture.setOpaque(false);
BitmapInfo bitmapInfo = new BitmapInfo();
bitmapInfo.srcRect.set(0, 0, bitmap.getWidth(), bitmap.getHeight());
bitmapInfo.srcShowRect.set(bitmapInfo.srcRect);
bitmapInfo.bitmapTexture = bitmapTexture;
mTextBmList.add(bitmapInfo);
}
mMovieFilter.init();
}
public void resizeText(int paramInt1, int paramInt2) {
CharSequence localCharSequence = getText();
if ((localCharSequence == null) || (localCharSequence.length() == 0) || (paramInt2 <= 0) || (paramInt1 <= 0))
return;
TextPaint localTextPaint = getPaint();
StaticLayout localStaticLayout = new StaticLayout(localCharSequence, localTextPaint, paramInt1, Layout.Alignment.ALIGN_NORMAL, 1.25F, 0.0F, true);
int i = localStaticLayout.getLineCount();
int j = paramInt2 / (localStaticLayout.getHeight() / i);
if (i > j) {
int k = localStaticLayout.getLineStart(j - 1);
int m = localStaticLayout.getLineEnd(j - 1);
float f1 = localStaticLayout.getLineWidth(j - 1);
float f2 = localTextPaint.measureText(this.mEllipsis);
while (paramInt1 < f1 + f2) {
m--;
f1 = localTextPaint.measureText(localCharSequence.subSequence(k, m + 1).toString());
}
setText(localCharSequence.subSequence(0, m) + this.mEllipsis);
}
setMaxLines(j);
this.mNeedsResize = false;
}
public static boolean flowText(SpannableStringBuilder ss, int width, int height, int textFullWidth, TextPaint textPaint) {
StaticLayout l = new StaticLayout(ss, 0, ss.length(), textPaint, textFullWidth - width, Layout.Alignment.ALIGN_NORMAL, 1.0F, 0, false);
int lines = 0;
while (lines < l.getLineCount() && l.getLineBottom(lines) < height) ++lines;
++lines;
int endPos;
if (lines < l.getLineCount()) {
endPos = l.getLineStart(lines);
} else {
return false;
}
if (ss.charAt(endPos-1) != '\n' && ss.charAt(endPos-1) != '\r') {
if (ss.charAt(endPos-1) == ' ') {
ss.replace(endPos-1, endPos, "\n");
} else {
ss.insert(endPos, "\n");
}
}
ss.setSpan(new FloatingMarginSpan(lines, width), 0, endPos, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
return true;
}
/**
* Attempts to fix a StaticLayout with wrong layout information that can result in
* StringIndexOutOfBoundsException during layout.draw().
*
* @param layout The {@link StaticLayout} to fix
* @return Whether the layout was fixed or not
*/
public static boolean fixLayout(StaticLayout layout) {
int lineStart = layout.getLineStart(0);
for (int i = 0, lineCount = layout.getLineCount(); i < lineCount; ++i) {
int lineEnd = layout.getLineEnd(i);
if (lineEnd < lineStart) {
// Bug, need to swap lineStart and lineEnd
try {
Field mLinesField = StaticLayout.class.getDeclaredField("mLines");
mLinesField.setAccessible(true);
Field mColumnsField = StaticLayout.class.getDeclaredField("mColumns");
mColumnsField.setAccessible(true);
int[] mLines = (int[]) mLinesField.get(layout);
int mColumns = mColumnsField.getInt(layout);
// swap lineStart and lineEnd by swapping all the following data:
// mLines[mColumns * i.. mColumns * i+1] <-> mLines[mColumns * (i+1)..mColumns * (i+2)]
for (int j = 0; j < mColumns; ++j) {
swap(mLines, mColumns * i + j, mColumns * i + j + mColumns);
}
} catch (Exception e) {
// something is wrong, bail out
break;
}
// start over
return false;
}
lineStart = lineEnd;
}
return true;
}
/**
* Resize the text size with specified width and height
*
* @param width
* @param height
*/
public void resizeText(int width, int height) {
CharSequence text = getText();
// Do not resize if the view does not have dimensions or there is no text
if (text == null || text.length() == 0 || height <= 0 || width <= 0 || mTextSize == 0) {
return;
}
if (getTransformationMethod() != null) {
text = getTransformationMethod().getTransformation(text, this);
}
// Get the text view's paint object
TextPaint textPaint = getPaint();
// Store the current text size
float oldTextSize = textPaint.getTextSize();
// If there is a max text size set, use the lesser of that and the default text size
float targetTextSize = mMaxTextSize > 0 ? Math.min(mTextSize, mMaxTextSize) : mTextSize;
// Get the required text height
int textHeight = getTextHeight(text, textPaint, width, targetTextSize);
// Until we either fit within our text view or we had reached our min text size, incrementally try smaller sizes
while (textHeight > height && targetTextSize > mMinTextSize) {
targetTextSize = Math.max(targetTextSize - 2, mMinTextSize);
textHeight = getTextHeight(text, textPaint, width, targetTextSize);
}
// If we had reached our minimum text size and still don't fit, append an ellipsis
if (mAddEllipsis && targetTextSize == mMinTextSize && textHeight > height) {
// Draw using a static layout
// modified: use a copy of TextPaint for measuring
TextPaint paint = new TextPaint(textPaint);
// Draw using a static layout
StaticLayout layout = new StaticLayout(text, paint, width, Layout.Alignment.ALIGN_NORMAL, mSpacingMult, mSpacingAdd, false);
// Check that we have a least one line of rendered text
if (layout.getLineCount() > 0) {
// Since the line at the specific vertical position would be cut off,
// we must trim up to the previous line
int lastLine = layout.getLineForVertical(height) - 1;
// If the text would not even fit on a single line, clear it
if (lastLine < 0) {
setText("");
}
// Otherwise, trim to the previous line and add an ellipsis
else {
int start = layout.getLineStart(lastLine);
int end = layout.getLineEnd(lastLine);
float lineWidth = layout.getLineWidth(lastLine);
float ellipseWidth = textPaint.measureText(mEllipsis);
// Trim characters off until we have enough room to draw the ellipsis
while (width < lineWidth + ellipseWidth) {
lineWidth = textPaint.measureText(text.subSequence(start, --end + 1).toString());
}
setText(text.subSequence(0, end) + mEllipsis);
}
}
}
// Some devices try to auto adjust line spacing, so force default line spacing
// and invalidate the layout as a side effect
setTextSize(TypedValue.COMPLEX_UNIT_PX, targetTextSize);
setLineSpacing(mSpacingAdd, mSpacingMult);
// Notify the listener if registered
if (mTextResizeListener != null) {
mTextResizeListener.onTextResize(this, oldTextSize, targetTextSize);
}
// Reset force resize flag
mNeedsResize = false;
}
/**
* Resize the text size with specified width and height
* @param width
* @param height
*/
public void resizeText(int width, int height) {
CharSequence text = getText();
// Do not resize if the view does not have dimensions or there is no text
if (text == null || text.length() == 0 || height <= 0 || width <= 0 || mTextSize == 0) {
return;
}
if (getTransformationMethod() != null) {
text = getTransformationMethod().getTransformation(text, this);
}
// Get the text view's paint object
TextPaint textPaint = getPaint();
// Store the current text size
float oldTextSize = textPaint.getTextSize();
// If there is a max text size set, use the lesser of that and the default text size
float targetTextSize = mMaxTextSize > 0 ? Math.min(mTextSize, mMaxTextSize) : mTextSize;
// Get the required text height
int textHeight = getTextHeight(text, textPaint, width, targetTextSize);
// Until we either fit within our text view or we had reached our min text size, incrementally try smaller sizes
while (textHeight > height && targetTextSize > mMinTextSize) {
targetTextSize = Math.max(targetTextSize - 2, mMinTextSize);
textHeight = getTextHeight(text, textPaint, width, targetTextSize);
}
// If we had reached our minimum text size and still don't fit, append an ellipsis
if (mAddEllipsis && targetTextSize == mMinTextSize && textHeight > height) {
// Draw using a static layout
// modified: use a copy of TextPaint for measuring
TextPaint paint = new TextPaint(textPaint);
// Draw using a static layout
StaticLayout layout = new StaticLayout(text, paint, width, Layout.Alignment.ALIGN_NORMAL, mSpacingMult, mSpacingAdd, false);
// Check that we have a least one line of rendered text
if (layout.getLineCount() > 0) {
// Since the line at the specific vertical position would be cut off,
// we must trim up to the previous line
int lastLine = layout.getLineForVertical(height) - 1;
// If the text would not even fit on a single line, clear it
if (lastLine < 0) {
setText("");
}
// Otherwise, trim to the previous line and add an ellipsis
else {
int start = layout.getLineStart(lastLine);
int end = layout.getLineEnd(lastLine);
float lineWidth = layout.getLineWidth(lastLine);
float ellipseWidth = textPaint.measureText(mEllipsis);
// Trim characters off until we have enough room to draw the ellipsis
while (width < lineWidth + ellipseWidth) {
lineWidth = textPaint.measureText(text.subSequence(start, --end + 1).toString());
}
setText(text.subSequence(0, end) + mEllipsis);
}
}
}
// Some devices try to auto adjust line spacing, so force default line spacing
// and invalidate the layout as a side effect
setTextSize(TypedValue.COMPLEX_UNIT_PX, targetTextSize);
setLineSpacing(mSpacingAdd, mSpacingMult);
// Notify the listener if registered
if (mTextResizeListener != null) {
mTextResizeListener.onTextResize(this, oldTextSize, targetTextSize);
}
// Reset force resize flag
mNeedsResize = false;
}
/**
* Resizes this view's text size with respect to its width and height
* (minus padding).
*/
private void resizeText() {
final int availableHeightPixels = getHeight() - getCompoundPaddingBottom() - getCompoundPaddingTop();
final int availableWidthPixels = getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight();
final CharSequence text = getText();
// Safety check
// (Do not resize if the view does not have dimensions or if there is no text)
if (text == null
|| text.length() <= 0
|| availableHeightPixels <= 0
|| availableWidthPixels <= 0
|| mMaxTextSizePixels <= 0) {
return;
}
float targetTextSizePixels = mMaxTextSizePixels;
int targetTextHeightPixels = getTextHeightPixels(text, availableWidthPixels, targetTextSizePixels);
// Until we either fit within our TextView
// or we have reached our minimum text size,
// incrementally try smaller sizes
while (targetTextHeightPixels > availableHeightPixels
&& targetTextSizePixels > mMinTextSizePixels) {
targetTextSizePixels = Math.max(
targetTextSizePixels - 2,
mMinTextSizePixels);
targetTextHeightPixels = getTextHeightPixels(
text,
availableWidthPixels,
targetTextSizePixels);
}
// If we have reached our minimum text size and the text still doesn't fit,
// append an ellipsis
// (NOTE: Auto-ellipsize doesn't work hence why we have to do it here)
// depending on the value of getEllipsize())
if (getEllipsize() != null
&& targetTextSizePixels == mMinTextSizePixels
&& targetTextHeightPixels > availableHeightPixels) {
// Make a copy of the original TextPaint object for measuring
TextPaint textPaintCopy = new TextPaint(getPaint());
textPaintCopy.setTextSize(targetTextSizePixels);
// Measure using a StaticLayout instance
StaticLayout staticLayout = new StaticLayout(
text,
textPaintCopy,
availableWidthPixels,
Layout.Alignment.ALIGN_NORMAL,
mLineSpacingMultiplier,
mLineSpacingExtra,
false);
// Check that we have a least one line of rendered text
if (staticLayout.getLineCount() > 0) {
// Since the line at the specific vertical position would be cut off,
// we must trim up to the previous line and add an ellipsis
int lastLine = staticLayout.getLineForVertical(availableHeightPixels) - 1;
if (lastLine >= 0) {
int startOffset = staticLayout.getLineStart(lastLine);
int endOffset = staticLayout.getLineEnd(lastLine);
float lineWidthPixels = staticLayout.getLineWidth(lastLine);
float ellipseWidth = textPaintCopy.measureText(mEllipsis);
// Trim characters off until we have enough room to draw the ellipsis
while (availableWidthPixels < lineWidthPixels + ellipseWidth) {
endOffset--;
lineWidthPixels = textPaintCopy.measureText(
text.subSequence(startOffset, endOffset + 1).toString());
}
setText(text.subSequence(0, endOffset) + mEllipsis);
}
}
}
super.setTextSize(TypedValue.COMPLEX_UNIT_PX, targetTextSizePixels);
// Some devices try to auto adjust line spacing, so force default line spacing
super.setLineSpacing(mLineSpacingExtra, mLineSpacingMultiplier);
}
/**
* Resize the text size with specified width and height
*
* @param width
* @param height
*/
public void resizeText(int width, int height) {
CharSequence text = getText();
// Do not resize if the view does not have dimensions or there is no text
if (text == null || text.length() == 0 || height <= 0 || width <= 0 || mTextSize == 0) {
return;
}
if (getTransformationMethod() != null) {
text = getTransformationMethod().getTransformation(text, this);
}
// Get the text view's paint object
TextPaint textPaint = getPaint();
// Store the current text size
float oldTextSize = textPaint.getTextSize();
// If there is a max text size set, use the lesser of that and the default text size
float targetTextSize = mMaxTextSize > 0 ? Math.min(mTextSize, mMaxTextSize) : mTextSize;
// Get the required text height
int textHeight = getTextHeight(text, textPaint, width, targetTextSize);
// Until we either fit within our text view or we had reached our min text size, incrementally try smaller sizes
while (textHeight > height && targetTextSize > mMinTextSize) {
targetTextSize = Math.max(targetTextSize - 2, mMinTextSize);
textHeight = getTextHeight(text, textPaint, width, targetTextSize);
}
// If we had reached our minimum text size and still don't fit, append an ellipsis
if (mAddEllipsis && targetTextSize == mMinTextSize && textHeight > height) {
// Draw using a static layout
// modified: use a copy of TextPaint for measuring
TextPaint paint = new TextPaint(textPaint);
// Draw using a static layout
StaticLayout layout = new StaticLayout(text, paint, width, Alignment.ALIGN_NORMAL, mSpacingMult, mSpacingAdd, false);
// Check that we have a least one line of rendered text
if (layout.getLineCount() > 0) {
// Since the line at the specific vertical position would be cut off,
// we must trim up to the previous line
int lastLine = layout.getLineForVertical(height) - 1;
// If the text would not even fit on a single line, clear it
if (lastLine < 0) {
setText("");
}
// Otherwise, trim to the previous line and add an ellipsis
else {
int start = layout.getLineStart(lastLine);
int end = layout.getLineEnd(lastLine);
float lineWidth = layout.getLineWidth(lastLine);
float ellipseWidth = textPaint.measureText(mEllipsis);
// Trim characters off until we have enough room to draw the ellipsis
while (width < lineWidth + ellipseWidth) {
lineWidth = textPaint.measureText(text.subSequence(start, --end + 1).toString());
}
setText(text.subSequence(0, end) + mEllipsis);
}
}
}
// Some devices try to auto adjust line spacing, so force default line spacing
// and invalidate the layout as a side effect
setTextSize(TypedValue.COMPLEX_UNIT_PX, targetTextSize);
setLineSpacing(mSpacingAdd, mSpacingMult);
// Notify the listener if registered
if (mTextResizeListener != null) {
mTextResizeListener.onTextResize(this, oldTextSize, targetTextSize);
}
// Reset force resize flag
mNeedsResize = false;
}
/**
* Resizes this view's text size with respect to its width and height
* (minus padding).
*/
private void resizeText() {
final int availableHeightPixels = getHeight() - getCompoundPaddingBottom() - getCompoundPaddingTop();
final int availableWidthPixels = getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight();
final CharSequence text = getText();
// Safety check
// (Do not resize if the view does not have dimensions or if there is no text)
if (text == null
|| text.length() <= 0
|| availableHeightPixels <= 0
|| availableWidthPixels <= 0
|| mMaxTextSizePixels <= 0) {
return;
}
float targetTextSizePixels = mMaxTextSizePixels;
int targetTextHeightPixels = getTextHeightPixels(text, availableWidthPixels, targetTextSizePixels);
// Until we either fit within our TextView
// or we have reached our minimum text size,
// incrementally try smaller sizes
while (targetTextHeightPixels > availableHeightPixels
&& targetTextSizePixels > mMinTextSizePixels) {
targetTextSizePixels = Math.max(
targetTextSizePixels - 2,
mMinTextSizePixels);
targetTextHeightPixels = getTextHeightPixels(
text,
availableWidthPixels,
targetTextSizePixels);
}
// If we have reached our minimum text size and the text still doesn't fit,
// append an ellipsis
// (NOTE: Auto-ellipsize doesn't work hence why we have to do it here)
// depending on the value of getEllipsize())
if (getEllipsize() != null
&& targetTextSizePixels == mMinTextSizePixels
&& targetTextHeightPixels > availableHeightPixels) {
// Make a copy of the original TextPaint object for measuring
TextPaint textPaintCopy = new TextPaint(getPaint());
textPaintCopy.setTextSize(targetTextSizePixels);
// Measure using a StaticLayout instance
StaticLayout staticLayout = new StaticLayout(
text,
textPaintCopy,
availableWidthPixels,
Layout.Alignment.ALIGN_NORMAL,
mLineSpacingMultiplier,
mLineSpacingExtra,
false);
// Check that we have a least one line of rendered text
if (staticLayout.getLineCount() > 0) {
// Since the line at the specific vertical position would be cut off,
// we must trim up to the previous line and add an ellipsis
int lastLine = staticLayout.getLineForVertical(availableHeightPixels) - 1;
if (lastLine >= 0) {
int startOffset = staticLayout.getLineStart(lastLine);
int endOffset = staticLayout.getLineEnd(lastLine);
float lineWidthPixels = staticLayout.getLineWidth(lastLine);
float ellipseWidth = textPaintCopy.measureText(mEllipsis);
// Trim characters off until we have enough room to draw the ellipsis
while (availableWidthPixels < lineWidthPixels + ellipseWidth) {
endOffset--;
lineWidthPixels = textPaintCopy.measureText(
text.subSequence(startOffset, endOffset + 1).toString());
}
setText(text.subSequence(0, endOffset) + mEllipsis);
}
}
}
super.setTextSize(TypedValue.COMPLEX_UNIT_PX, targetTextSizePixels);
// Some devices try to auto adjust line spacing, so force default line spacing
super.setLineSpacing(mLineSpacingExtra, mLineSpacingMultiplier);
}
/**
* Resize the text size with specified width and height
* @param width
* @param height
*/
public void resizeText(int width, int height) {
CharSequence text = getText();
// Do not resize if the view does not have dimensions or there is no text
if (text == null || text.length() == 0 || height <= 0 || width <= 0 || mTextSize == 0) {
return;
}
if (getTransformationMethod() != null) {
text = getTransformationMethod().getTransformation(text, this);
}
// Get the text view's paint object
TextPaint textPaint = getPaint();
// Store the current text size
float oldTextSize = textPaint.getTextSize();
// If there is a max text size set, use the lesser of that and the default text size
float targetTextSize = mMaxTextSize > 0 ? Math.min(mTextSize, mMaxTextSize) : mTextSize;
// Get the required text height
int textHeight = getTextHeight(text, textPaint, width, targetTextSize);
// Until we either fit within our text view or we had reached our min text size, incrementally try smaller sizes
while (textHeight > height && targetTextSize > mMinTextSize) {
targetTextSize = Math.max(targetTextSize - 2, mMinTextSize);
textHeight = getTextHeight(text, textPaint, width, targetTextSize);
}
// If we had reached our minimum text size and still don't fit, append an ellipsis
if (mAddEllipsis && targetTextSize == mMinTextSize && textHeight > height) {
// Draw using a static layout
// modified: use a copy of TextPaint for measuring
TextPaint paint = new TextPaint(textPaint);
// Draw using a static layout
StaticLayout layout = new StaticLayout(text, paint, width, Alignment.ALIGN_NORMAL, mSpacingMult, mSpacingAdd, false);
// Check that we have a least one line of rendered text
if (layout.getLineCount() > 0) {
// Since the line at the specific vertical position would be cut off,
// we must trim up to the previous line
int lastLine = layout.getLineForVertical(height) - 1;
// If the text would not even fit on a single line, clear it
if (lastLine < 0) {
setText("");
}
// Otherwise, trim to the previous line and add an ellipsis
else {
int start = layout.getLineStart(lastLine);
int end = layout.getLineEnd(lastLine);
float lineWidth = layout.getLineWidth(lastLine);
float ellipseWidth = textPaint.measureText(mEllipsis);
// Trim characters off until we have enough room to draw the ellipsis
while (width < lineWidth + ellipseWidth) {
lineWidth = textPaint.measureText(text.subSequence(start, --end + 1).toString());
}
setText(text.subSequence(0, end) + mEllipsis);
}
}
}
// Some devices try to auto adjust line spacing, so force default line spacing
// and invalidate the layout as a side effect
setTextSize(TypedValue.COMPLEX_UNIT_PX, targetTextSize);
setLineSpacing(mSpacingAdd, mSpacingMult);
// Notify the listener if registered
if (mTextResizeListener != null) {
mTextResizeListener.onTextResize(this, oldTextSize, targetTextSize);
}
// Reset force resize flag
mNeedsResize = false;
}
/**
* Resize the text size with specified width and height
* @param width
* @param height
*/
public void resizeText(int width, int height) {
CharSequence text = getText();
// Do not resize if the view does not have dimensions or there is no text
if(text == null || text.length() == 0 || height <= 0 || width <= 0 || mTextSize == 0) {
return;
}
// Get the text view's paint object
TextPaint textPaint = getPaint();
// Store the current text size
float oldTextSize = textPaint.getTextSize();
// If there is a max text size set, use the lesser of that and the default text size
float targetTextSize = mMaxTextSize > 0 ? Math.min(mTextSize, mMaxTextSize) : mTextSize;
// Get the required text height
int textHeight = getTextHeight(text, textPaint, width, targetTextSize);
// Until we either fit within our text view or we had reached our min text size, incrementally try smaller sizes
while(textHeight > height && targetTextSize > mMinTextSize) {
targetTextSize = Math.max(targetTextSize - 2, mMinTextSize);
textHeight = getTextHeight(text, textPaint, width, targetTextSize);
}
// If we had reached our minimum text size and still don't fit, append an ellipsis
if(mAddEllipsis && targetTextSize == mMinTextSize && textHeight > height) {
// Draw using a static layout
StaticLayout layout = new StaticLayout(text, textPaint, width, Alignment.ALIGN_NORMAL, mSpacingMult, mSpacingAdd, false);
// Check that we have a least one line of rendered text
if(layout.getLineCount() > 0) {
// Since the line at the specific vertical position would be cut off,
// we must trim up to the previous line
int lastLine = layout.getLineForVertical(height) - 1;
// If the text would not even fit on a single line, clear it
if(lastLine < 0) {
setText("");
}
// Otherwise, trim to the previous line and add an ellipsis
else {
int start = layout.getLineStart(lastLine);
int end = layout.getLineEnd(lastLine);
float lineWidth = layout.getLineWidth(lastLine);
float ellipseWidth = textPaint.measureText(mEllipsis);
// Trim characters off until we have enough room to draw the ellipsis
while(width < lineWidth + ellipseWidth) {
lineWidth = textPaint.measureText(text.subSequence(start, --end + 1).toString());
}
setText(text.subSequence(0, end) + mEllipsis);
}
}
}
// Some devices try to auto adjust line spacing, so force default line spacing
// and invalidate the layout as a side effect
textPaint.setTextSize(targetTextSize);
setLineSpacing(mSpacingAdd, mSpacingMult);
// Notify the listener if registered
if(mTextResizeListener != null) {
mTextResizeListener.onTextResize(this, oldTextSize, targetTextSize);
}
// Reset force resize flag
mNeedsResize = false;
}