字符串资源文件中的format语句(format statement in a string resource file)

字符串资源文件中的format语句(format statement in a string resource file)

我在常用的strings.xml中定义了字符串资源文件，如下所示：

<string name="hello_world"> HELLO</string>

是否可以定义如下所示的格式字符串

result_str = String.format("Amount: %.2f for %d days ", var1, var2);

在strings.xml资源文件中？

我试图逃避特殊字符，但它不工作。

I have strings defined in the usual strings.xml Resource file like this:

<string name="hello_world"> HELLO</string>

Is it possible to define format strings such as the one below

result_str = String.format("Amount: %.2f for %d days ", var1, var2);

in the strings.xml resource file?

I tried escaping the special characters but its not working.

最满意答案

您应该将formatted="false"添加到字符串资源

---

这是一个例子

在你的strings.xml ：

<string name="all" formatted="false">Amount: %.2f%n for %d days</string>

在你的代码中：

yourTextView.setText(String.format(getString(R.string.all), 3.12, 2));

You do not need to use formatted="false" in your XML. You just need to use fully qualified string format markers - %[POSITION]$[TYPE] (where [POSITION] is the attribute position and [TYPE] is the variable type), rather than the short versions, for example %s or %d.

Quote from Android Docs: String Formatting and Styling:

<string name="welcome_messages">Hello, %1$s! You have %2$d new messages.</string>

In this example, the format string has two arguments: %1$s is a string and %2$d is a decimal integer. You can format the string with arguments from your application like this:

Resources res = getResources(); String text = res.getString(R.string.welcome_messages, username, mailCount);