How to use

android.text.DynamicLayout

constructor

debugLayout = new DynamicLayout(debugText, debugTextPaint, getWidth(), Layout.Alignment.ALIGN_NORMAL, 1.0f, 0.0f, false);

@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
  super.onSizeChanged(w, h, oldw, oldh);
  // Initialize the values;
  initializeValues();
  // Build a new Dynamic Layout with the available width since we can only provide width when the dynamic layout is created
  mDynamicLayout = new DynamicLayout(mStringBuilder, mStringBuilder, mTextPaint, w, Layout.Alignment.ALIGN_CENTER, 1.0f, 1.0f, true);
}

new DynamicLayout(spannable, mTickLabelFgPaint,
  (int) mBarItemWidth, Layout.Alignment.ALIGN_CENTER, 1.0f, 1.0f, false));

private DynamicLayout makeLayout(int width){
  DynamicLayout result = new DynamicLayout(mText,
      mAppearance.textPaint(null),
      width,
      Layout.Alignment.ALIGN_NORMAL,
      mAppearance.getSpacingMult(),
      mAppearance.getLineSpacingAdd(),
      false);
  return result;
}

if (layout == null) {
  layout = new DynamicLayout(spannable, mTickLabelFgPaint,
      (int) mBarItemWidth, Layout.Alignment.ALIGN_CENTER, 1.0f, 1.0f, false);
  mTickTextLayouts[tickFormat].put(text.length(), layout);

private Layout createWorkingLayout(String workingText, int textTotalWidth) {
  /**
   *  float spacingmult:相对行间距，相对字体大小，1.5f表示行间距为1.5倍的字体高度。
   *  float spacingadd:在基础行距上添加多少
   */
  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
    LineSpacingMultiplier = getLineSpacingMultiplier();
    LineSpacingExtra = getLineSpacingExtra();
  } else {
    if (LineSpacingMultiplier == 0.0f && LineSpacingExtra == 0.0f) {
      try {
        Field Multiplier = TextView.class.getDeclaredField("mSpacingMult");
        Multiplier.setAccessible(true);
        LineSpacingMultiplier = Multiplier.getFloat(this);
        Field SpacingExtra = TextView.class.getDeclaredField("mSpacingAdd");
        SpacingExtra.setAccessible(true);
        LineSpacingExtra = SpacingExtra.getFloat(this);
      } catch (Exception e) {
        e.printStackTrace();
        LineSpacingMultiplier = 1.0f;
        LineSpacingExtra = 3.0f;
      }
    }
  }
  return new DynamicLayout(workingText, getPaint(),
    (textTotalWidth == 0 ? getScreenPixWidth(mContext) : textTotalWidth),
    Layout.Alignment.ALIGN_NORMAL, LineSpacingMultiplier, LineSpacingExtra, false);
}

debugLayout = new DynamicLayout(debugText, debugTextPaint, getWidth(), Layout.Alignment.ALIGN_NORMAL, 1.0f, 0.0f, false);

switch (mCurrState){
  case STATE_SHRINK: {
    mLayout = new DynamicLayout(mOrigText, mTextPaint, mLayoutWidth, Layout.Alignment.ALIGN_NORMAL, 1.0f, 0.0f, false);
    mTextLineCount = mLayout.getLineCount();
      return mOrigText;
    mLayout = new DynamicLayout(mOrigText, mTextPaint, mLayoutWidth, Layout.Alignment.ALIGN_NORMAL, 1.0f, 0.0f, false);
    mTextLineCount = mLayout.getLineCount();