AChep

private float getSizeFitText(String text, int textWidth) {
		Paint mTestPaint = new Paint();

		if (textWidth <= 0)
			return 0;
		int targetWidth = textWidth;
		float hi = 100;
		float lo = 2;
		final float threshold = 0.5f; // How close we have to be

		while ((hi - lo) > threshold) {
			float size = (hi + lo) / 2;
			mTestPaint.setTextSize(size);
			if (mTestPaint.measureText(text) >= targetWidth)
				hi = size; // too big
			else
				lo = size; // too small
		}
		// Use lo so that we undershoot rather than overshoot
		return lo - 10;
	}