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