code: @TargetApi(Build.VERSION_CODES.JELLY_BEAN)
  	public int getMaxHeight (){
  		if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN)
  			return mInputView.getMaxHeight();
  
  		return -1;
  	}
docs: @return the maximum height of this TextView expressed in pixels, or -1 if the maximum
  height was set in number of lines instead using {@link #setMaxLines(int) or #setLines(int)}.
  
  @see #setMaxHeight(int)
  
  @attr ref android.R.styleable#TextView_maxHeight