java - 如何设置文本编号格式？

Question

我使用这个方法来将 int 的值显示到 TextView 中

    texton= (TextView)findViewById(R.id.textcolumn);
    texton.setText(String.valueOf(score));

所以会这样显示

但是我想把数字文本格式变成这样，有可能吗？

Answer 1

您可以使用 DecimalFormat 。

公共(public)类 DecimalFormat 扩展 NumberFormat

DecimalFormat is a concrete subclass of NumberFormat that formats decimal numbers. It has a variety of features designed to make it possible to parse and format numbers in any locale, including support for Western, Arabic, and Indic digits. It also supports different kinds of numbers, including integers (123), fixed-point numbers (123.4), scientific notation (1.23E4), percentages (12%), and currency amounts ($123). All of these can be localized.

请看这里

1. NumberFormat
2. How can I format a String number to have commas and round?

所以试试这个方法，

DecimalFormat formatter = new DecimalFormat("#,###.000");
String get_value = formatter.format(score);
texton= (TextView)findViewById(R.id.textcolumn);
texton.setText(get_value);

Logic Courtesy