MessageFormat 获取一组对象,格式化这些对象,然后将格式化后的字符串插入到模式中的适当位置。
第一个例子使用静态的方法 MessageFormat.format,它在内部创建一个只使用一次的 MessageFormat: int planet = 7; String event = "a disturbance in the Force"; String result = MessageFormat.format( "At {1,time} on {1,date}, there was {2} on planet {0,number,integer}.", planet, new Date(), event); 输出为: At 12:30 PM on Jul 3, 2053, there was a disturbance in the Force on planet 7.
MessageFormat mf = new MessageFormat("{0,number,#.##}, {0,number,#.#}");
textView.setText(String.format("总价 : ¥%1$.2f", 300));
原文:http://blog.csdn.net/pengkv/article/details/42113379