Paint paint = new Paint();//核心
	
	TextView textView = (TextView) inflater.inflate(
	R.layout.item_textview, null);
	
	paint.setTextSize(textView.getTextSize());//核心
	
	int itemPadding = textView.getCompoundPaddingLeft()
	+ textView.getCompoundPaddingRight();
	
	String text="xxx";
	float itemWidth = paint.measureText(text) + itemPadding;//核心