@TargetApi(Build.VERSION_CODES.JELLY_BEAN) @Override public int onTestSize(int suggestedSize, RectF availableSPace) { mPaint.setTextSize(suggestedSize); String text = getText().toString(); boolean singleline = getMaxLines() == 1; if (singleline) { mTextRect.bottom = mPaint.getFontSpacing(); mTextRect.right = mPaint.measureText(text); } else { StaticLayout layout = new StaticLayout( text, mPaint, mWidthLimit, Alignment.ALIGN_NORMAL, mSpacingMult, mSpacingAdd, true); // return early if we have more lines if (getMaxLines() != NO_LINE_LIMIT && layout.getLineCount() > getMaxLines()) { return 1; } mTextRect.bottom = layout.getHeight(); int maxWidth = -1; for (int i = 0; i < layout.getLineCount(); i++) { if (maxWidth < layout.getLineWidth(i)) { maxWidth = (int) layout.getLineWidth(i); } } mTextRect.right = maxWidth; } mTextRect.offsetTo(0, 0); if (availableSPace.contains(mTextRect)) { // may be too small, don't worry we will find the best match return -1; } else { // too big return 1; } }